JP2019182994A - Polycarbonate resin composition - Google Patents

Abstract

To provide a polycarbonate resin composition achieving both of flowability and strength at high level and good balance.SOLUTION: There is provided a polycarbonate resin composition containing 100 pts.mass of a polycarbonate resin (A) having a terminal structure represented by the following formula (1), and 2 to 100 pts.mass of a polycarbonate copolymer (B) consisting of a carbonate structural unit (i) represented by the following formula (2), and a polycarbonate structural unit (ii) derived from bisphenol A.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a polycarbonate resin composition, and more particularly, to a polycarbonate resin composition that achieves both fluidity and strength at a higher level in a well-balanced manner.

A surface light source device is incorporated in a liquid crystal display device used for a personal computer, a cellular phone and the like in order to meet demands for thinning, lightening, labor saving, and high definition. The surface light source device has a wedge-shaped cross-section light guide plate or a flat plate shape with a uniform inclined surface for the purpose of uniformly and efficiently guiding incident light to the liquid crystal display side. A light guide plate is provided. In some cases, an uneven pattern is formed on the surface of the light guide plate to provide a light scattering function.
Such a light guide plate is obtained by injection molding of a thermoplastic resin, and the above concavo-convex pattern is imparted by transferring a concavo-convex portion formed on the surface of the nest. Conventionally, the light guide plate has been molded from a resin material such as polymethylmethacrylate (PMMA). Recently, however, a display device that displays a clearer image has been demanded, and the temperature inside the device is increased by heat generated near the light source. Therefore, it is being replaced with a polycarbonate resin material having higher heat resistance.

  Furthermore, in recent years, especially for mobile phones, there has been a demand for further thinning, and for the light guide plate, there has been a demand for further thinning. PMMA has the advantage that it is easy to form a thin wall because of its excellent fluidity, but has the disadvantage that it has low impact resistance and breaks when molded, handled, or incorporated into a liquid crystal display device. there were. Polycarbonate resin is excellent in impact resistance, but its flowability is lower than that of PMMA, so that it is difficult to form a very thin light guide plate. Therefore, as described in Patent Document 1 and Patent Document 2, a composition for a light guide plate having a certain level of impact resistance while suppressing a decrease in fluidity is proposed by setting the polycarbonate resin to a specific molecular weight range. I came. However, in recent years, there has been a demand for further thinning, and the polycarbonate resin also has a lower molecular weight in order to further improve the fluidity, so that it can be cracked at the time of molding and handling, and further when incorporated in a liquid crystal display device. There was a problem that it was.

  Furthermore, a method for improving moldability by adding a new dihydroxy compound as a monomer to the conventional bisphenol A type polycarbonate resin has been proposed. For example, Patent Document 3 describes a polycarbonate resin having improved fluidity composed of bisphenol A and bisphenol E, and Patent Documents 4 to 5 also improved fluidity using a specific bisphenol compound. Polycarbonate resins are described. However, such a polycarbonate resin also has a problem that it cannot withstand actual use because of its extremely low heat resistance, and a thin molded article because of insufficient fluidity and impact resistance sufficient to obtain a light guide plate. There was a problem that it could not be obtained.

JP 2010-37380 A JP2013-139097A Japanese Patent Laid-Open No. 5-1144 JP-A-6-128371 JP 59-131623 A

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a polycarbonate resin composition having both high fluidity and high strength.

As a result of intensive studies to achieve the above object, the present inventor has obtained a polycarbonate copolymer containing a specific amount of a structural unit derived from a specific aromatic dihydroxy compound with respect to a polycarbonate resin (A) having a specific terminal structure. It has been found that the above problem can be solved by containing (B), and the present invention has been completed.
The present invention relates to the following polycarbonate resin composition.

[1] The carbonate structural unit (i) represented by the following formula (2) and the following formula (3) are represented by 100 parts by mass of the polycarbonate resin (A) having the terminal structure represented by the following formula (1). A polycarbonate resin composition comprising 2 to 100 parts by mass of a polycarbonate copolymer (B) comprising a carbonate structural unit (ii).
(In formula (1), n represents an integer of 0 or 1, and R represents an alkyl group having 5 to 14 carbon atoms.)
(In formula (2), R ¹ represents an alkyl group or alkenyl group having 8 to 24 carbon atoms, R ² and R ³ each independently represents a monovalent hydrocarbon group having 1 to 15 carbon atoms, And b each independently represents an integer of 0 to 4.)

[2] The polycarbonate resin composition according to the above [1], wherein R in the formula (1) is at least one selected from the group consisting of an n-octyl group, an iso-octyl group and a t-octyl group. object.
[3] The polycarbonate resin composition according to the above [1] or [2], wherein R in the formula (1) is a t-octyl group.
[4] The proportion of the carbonate structural unit (i) is more than 10 mol% and less than 39 mol% with respect to a total of 100 mol% of the carbonate structural unit (i) and the carbonate structural unit (ii) in the polycarbonate copolymer (B) [ The polycarbonate resin composition according to any one of [1] to [3].
[5] Furthermore, the phosphorous heat stabilizer (C) and / or the antioxidant (D) is contained in an amount of 0.005 to 0.5 parts by mass with respect to 100 parts by mass of the polycarbonate resin (A). [4] The polycarbonate resin composition according to any one of [4].
[6] Any of [1] to [5] above, further comprising 0.1 to 4 parts by mass of a polyalkylene glycol (E) having a number average molecular weight of 500 to 5000 with respect to 100 parts by mass of the polycarbonate resin (A). A polycarbonate resin composition according to any one of the above.
[7] The polycarbonate resin according to any one of [1] to [6], further containing 0.0005 to 0.2 parts by mass of the epoxy compound (F) with respect to 100 parts by mass of the polycarbonate resin (A). Composition.

[8] The polycarbonate resin composition according to any one of [1] to [7], wherein the polyalkylene glycol (E) is a polyalkylene glycol (E1) represented by the following formula (III-1).
(In formula (III-1), R represents an alkyl group having 1 to 3 carbon atoms, and X and Y are each independently a hydrogen atom, an aliphatic acyl group having 1 to 23 carbon atoms, or 1 to 23 carbon atoms. And an alkyl group having 6 to 22 carbon atoms or an aralkyl group having 7 to 23 carbon atoms, and m represents an integer of 10 to 400.)
[9] The polycarbonate resin composition according to any one of [1] to [7], wherein the polyalkylene glycol (E) is a polyalkylene glycol (E2) represented by the following general formula (III-2).
(In formula (III-2), X and Y are each independently a hydrogen atom, an aliphatic acyl group having 2 to 23 carbon atoms, an alkyl group having 1 to 23 carbon atoms, an aryl group having 6 to 22 carbon atoms, or A C7-23 aralkyl group is shown, m is an integer of 2-6, p shows the integer of 6-100.)

[10] A branch in which the polyalkylene glycol (E) is selected from linear alkylene ether units represented by the following general formula (I) and units represented by the following general formulas (II-1) to (II-4) The polycarbonate resin composition according to any one of [1] to [7], which is a polyalkylene glycol copolymer (E3) having an alkylene ether unit.
(In formula (I), n is an integer of 3-6.)
(In formulas (II-1) to (II-4), R ^{1 to} R ¹⁰ represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and in each of formulas (II-1) to (II-4) At least one or more of R ^{1 to} R ¹⁰ is an alkyl group having 1 to 3 carbon atoms.)

[11] The polycarbonate resin composition according to the above [10], wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a unit represented by the general formula (II-3). .
[12] The polycarbonate resin composition according to the above [11], wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a 3-methyltetramethylene ether unit.
[13] The polycarbonate resin composition according to [10], wherein the polyalkylene glycol copolymer (E3) is a copolymer composed of a tetramethylene ether unit and a unit represented by the general formula (II-1). .
[14] The polycarbonate resin composition according to the above [13], wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a 2-methylethylene ether unit.
[15] The polycarbonate resin composition according to [10], wherein the polyalkylene glycol copolymer (E3) is a copolymer composed of a tetramethylene ether unit and a unit represented by the general formula (II-2). .
[16] The polycarbonate resin composition according to the above [15], wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a 2,2-dimethyltrimethylene ether unit.
[17] A molded product obtained by molding the polycarbonate resin composition according to any one of [1] to [16].
[18] The molded product according to [17], wherein the molded product is an optical component.

  The polycarbonate resin composition of the present invention is a polycarbonate resin composition that achieves both fluidity and strength at a higher level in a well-balanced manner.

In the Example and comparative example of this invention, it is a graph which shows the relationship between Q value (fluidity) and a crack test (maximum displacement point). It is the top view and sectional drawing of the molded article used for the crack test of the Example. It is sectional drawing which shows the shape of the parallel uneven | corrugated pattern provided in the back surface side of the molded article used for the crack test of an Example. It is a conceptual diagram which shows the apparatus used for the crack test of the Example.

Hereinafter, the present invention will be described in detail with reference to embodiments and examples.
In the present specification, “to” is used in the sense of including the numerical values described before and after the lower and upper limits unless otherwise specified.

The polycarbonate resin composition of the present invention has a carbonate structural unit (i) represented by the above formula (2) and the above formula with respect to 100 parts by mass of the polycarbonate resin (A) having a terminal structure represented by the above formula (1). 2-100 mass parts of polycarbonate copolymers (B) which consist of carbonate structural unit (ii) represented by (3) are contained, It is characterized by the above-mentioned.
Hereafter, each component etc. which comprise the polycarbonate resin composition of this invention are demonstrated in detail.

[Polycarbonate resin (A)]
The polycarbonate resin (A) used in the present invention is a polycarbonate resin having a terminal structure represented by the following general formula (1).
(In formula (1), n represents an integer of 0 or 1, and R represents an alkyl group having 5 to 14 carbon atoms.)

  The polycarbonate resin (A) is a polycarbonate resin different from the polycarbonate copolymer (B), and is not particularly limited as long as it has a terminal structure represented by the general formula (1) other than the polycarbonate copolymer (B). Instead, various things are used.

  Polycarbonate resins can be classified into aromatic polycarbonate resins in which carbons directly bonded to carbonic acid bonds are aromatic carbons and aliphatic polycarbonate resins in which aliphatic carbons are aliphatic carbons. From the viewpoint of physical properties, electrical characteristics, etc., an aromatic polycarbonate resin is preferred.

As an aromatic polycarbonate resin, the aromatic polycarbonate resin formed by making an aromatic dihydroxy compound and a carbonate formation compound react is mentioned, for example. At this time, in addition to the aromatic dihydroxy compound and the carbonate-forming compound, a polyhydroxy compound or the like may be reacted. The aromatic polycarbonate resin may be linear or branched.
Further, the polycarbonate resin (A) may be a homopolymer composed of one type of repeating unit or a copolymer having two or more types of repeating units. At this time, the copolymer can be selected from various copolymerization forms such as a random copolymer and a block copolymer. In general, such a polycarbonate polymer is a thermoplastic resin.

Among monomers used as raw materials for aromatic polycarbonate resins, examples of aromatic dihydroxy compounds include:
Dihydroxybenzenes such as 1,2-dihydroxybenzene, 1,3-dihydroxybenzene (ie, resorcinol), 1,4-dihydroxybenzene;
Dihydroxybiphenyls such as 2,5-dihydroxybiphenyl, 2,2′-dihydroxybiphenyl, 4,4′-dihydroxybiphenyl;

2,2′-dihydroxy-1,1′-binaphthyl, 1,2-dihydroxynaphthalene, 1,3-dihydroxynaphthalene, 2,3-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, , 7-dihydroxynaphthalene, dihydroxynaphthalene such as 2,7-dihydroxynaphthalene;

2,2′-dihydroxydiphenyl ether, 3,3′-dihydroxydiphenyl ether, 4,4′-dihydroxydiphenyl ether, 4,4′-dihydroxy-3,3′-dimethyldiphenyl ether, 1,4-bis (3-hydroxyphenoxy) Dihydroxy diaryl ethers such as benzene and 1,3-bis (4-hydroxyphenoxy) benzene;

2,2-bis (4-hydroxyphenyl) propane (ie, bisphenol A),
1,1-bis (4-hydroxyphenyl) propane,
2,2-bis (3-methyl-4-hydroxyphenyl) propane,
2,2-bis (3-methoxy-4-hydroxyphenyl) propane,
2- (4-hydroxyphenyl) -2- (3-methoxy-4-hydroxyphenyl) propane,
1,1-bis (3-tert-butyl-4-hydroxyphenyl) propane,
2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane,
2,2-bis (3-cyclohexyl-4-hydroxyphenyl) propane,
2- (4-hydroxyphenyl) -2- (3-cyclohexyl-4-hydroxyphenyl) propane,
α, α′-bis (4-hydroxyphenyl) -1,4-diisopropylbenzene,
1,3-bis [2- (4-hydroxyphenyl) -2-propyl] benzene,
Bis (4-hydroxyphenyl) methane,
Bis (4-hydroxyphenyl) cyclohexylmethane,
Bis (4-hydroxyphenyl) phenylmethane,
Bis (4-hydroxyphenyl) (4-propenylphenyl) methane,
Bis (4-hydroxyphenyl) diphenylmethane,
Bis (4-hydroxyphenyl) naphthylmethane,
1,1-bis (4-hydroxyphenyl) ethane,
1,1-bis (4-hydroxyphenyl) -1-phenylethane,
1,1-bis (4-hydroxyphenyl) -1-naphthylethane,
1,1-bis (4-hydroxyphenyl) butane,
2,2-bis (4-hydroxyphenyl) butane,
2,2-bis (4-hydroxyphenyl) pentane,
1,1-bis (4-hydroxyphenyl) hexane,
2,2-bis (4-hydroxyphenyl) hexane,
1,1-bis (4-hydroxyphenyl) octane,
2,2-bis (4-hydroxyphenyl) octane,
4,4-bis (4-hydroxyphenyl) heptane,
2,2-bis (4-hydroxyphenyl) nonane,
1,1-bis (4-hydroxyphenyl) decane,
1,1-bis (4-hydroxyphenyl) dodecane,
Bis (hydroxyaryl) alkanes such as;

1,1-bis (4-hydroxyphenyl) cyclopentane,
1,1-bis (4-hydroxyphenyl) cyclohexane,
1,1-bis (4-hydroxyphenyl) -3,3-dimethylcyclohexane,
1,1-bis (4-hydroxyphenyl) -3,4-dimethylcyclohexane,
1,1-bis (4-hydroxyphenyl) -3,5-dimethylcyclohexane,
1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane,
1,1-bis (4-hydroxy-3,5-dimethylphenyl) -3,3,5-trimethylcyclohexane,
1,1-bis (4-hydroxyphenyl) -3-propyl-5-methylcyclohexane,
1,1-bis (4-hydroxyphenyl) -3-tert-butyl-cyclohexane,
1,1-bis (4-hydroxyphenyl) -4-tert-butyl-cyclohexane,
1,1-bis (4-hydroxyphenyl) -3-phenylcyclohexane,
1,1-bis (4-hydroxyphenyl) -4-phenylcyclohexane,
Bis (hydroxyaryl) cycloalkanes such as;

9,9-bis (4-hydroxyphenyl) fluorene,
Cardio structure-containing bisphenols such as 9,9-bis (4-hydroxy-3-methylphenyl) fluorene;

4,4′-dihydroxydiphenyl sulfide,
Dihydroxydiaryl sulfides such as 4,4′-dihydroxy-3,3′-dimethyldiphenyl sulfide;

Dihydroxydiaryl sulfoxides such as 4,4'-dihydroxydiphenyl sulfoxide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfoxide;

4,4′-dihydroxydiphenyl sulfone,
Dihydroxydiaryl sulfones such as 4,4′-dihydroxy-3,3′-dimethyldiphenyl sulfone;
Etc.

Among these, bis (hydroxyaryl) alkanes are preferable, and bis (4-hydroxyphenyl) alkanes are particularly preferable, and 2,2-bis (4-hydroxyphenyl) propane (especially from the viewpoint of impact resistance and heat resistance). That is, bisphenol A) is preferred.
In addition, 1 type may be used for an aromatic dihydroxy compound and it may use 2 or more types together by arbitrary combinations and a ratio.

Among the monomers used as the raw material for the polycarbonate resin (A), carbonyl halides, carbonate esters, and the like are used as examples of carbonate-forming compounds. In addition, a carbonate formation compound may use 1 type and may use 2 or more types together by arbitrary combinations and a ratio.
Specific examples of carbonyl halides include phosgene; haloformates such as bischloroformate of dihydroxy compounds and monochloroformate of dihydroxy compounds.
Specific examples of carbonate esters include diaryl carbonates such as diphenyl carbonate and ditolyl carbonate; dialkyl carbonates such as dimethyl carbonate and diethyl carbonate; biscarbonate bodies of dihydroxy compounds, monocarbonate bodies of dihydroxy compounds, and cyclic carbonates. And carbonate bodies of dihydroxy compounds such as

[Production method of polycarbonate resin]
The method for producing the polycarbonate resin is not particularly limited, and any method can be adopted. Examples thereof include an interfacial polymerization method, a melt transesterification method, a pyridine method, a ring-opening polymerization method of a cyclic carbonate compound, and a solid phase transesterification method of a prepolymer.
Hereinafter, a particularly preferable one of these methods will be described in detail.

<Interfacial polymerization method>
First, the case where a polycarbonate resin is produced by an interfacial polymerization method will be described.
In the interfacial polymerization method, a dihydroxy compound and a carbonate precursor (preferably phosgene) are reacted in the presence of an organic solvent inert to the reaction and an aqueous alkaline solution, usually at a pH of 9 or higher. Polycarbonate resin is obtained by interfacial polymerization in the presence. Note that an antioxidant may be present in the reaction system as needed to prevent oxidation of the dihydroxy compound.

  The dihydroxy compound and the carbonate precursor are as described above. Of the carbonate precursors, phosgene is preferably used, and a method using phosgene is particularly called a phosgene method.

  Examples of the organic solvent inert to the reaction include chlorinated hydrocarbons such as dichloromethane, 1,2-dichloroethane, chloroform, monochlorobenzene and dichlorobenzene; aromatic hydrocarbons such as benzene, toluene and xylene; It is done. In addition, 1 type may be used for an organic solvent and it may use 2 or more types together by arbitrary combinations and a ratio.

  Examples of the alkali compound contained in the alkaline aqueous solution include alkali metal compounds and alkaline earth metal compounds such as sodium hydroxide, potassium hydroxide, lithium hydroxide, and sodium hydrogen carbonate, among which sodium hydroxide and water Potassium oxide is preferred. In addition, 1 type may be used for an alkali compound and it may use 2 or more types together by arbitrary combinations and a ratio.

  Although there is no restriction | limiting in the density | concentration of the alkali compound in alkaline aqueous solution, Usually, in order to control pH in the alkaline aqueous solution of reaction to 10-12, it is used at 5-10 mass%. For example, when phosgene is blown, the molar ratio of the bisphenol compound and the alkali compound is usually 1: 1.9 or more in order to control the pH of the aqueous phase to be 10 to 12, preferably 10 to 11. Among these, it is preferable that the ratio is 1: 2.0 or more, usually 1: 3.2 or less, and more preferably 1: 2.5 or less.

  Examples of the polymerization catalyst include aliphatic tertiary amines such as trimethylamine, triethylamine, tributylamine, tripropylamine, and trihexylamine; alicyclic rings such as N, N′-dimethylcyclohexylamine and N, N′-diethylcyclohexylamine. Formula tertiary amines; aromatic tertiary amines such as N, N′-dimethylaniline and N, N′-diethylaniline; quaternary ammonium salts such as trimethylbenzylammonium chloride, tetramethylammonium chloride, triethylbenzylammonium chloride, etc. Pyridine; guanine; guanidine salt; and the like. In addition, 1 type may be used for a polymerization catalyst and it may use 2 or more types together by arbitrary combinations and a ratio.

In the reaction, the order of mixing the reaction substrate, reaction medium, catalyst, additive and the like is arbitrary as long as a desired polycarbonate resin is obtained, and an appropriate order may be arbitrarily set. For example, when phosgene is used as the carbonate precursor, the end terminator is not particularly limited as long as it is from the time of the reaction (phosgenation) of the dihydroxy compound and phosgene to the start of the polymerization reaction. It is preferable to add following the mixing step.
In addition, reaction temperature is 0-40 degreeC normally, and reaction time is normally several minutes (for example, 10 minutes)-several hours (for example, 6 hours).

<Melted ester exchange method>
Next, a case where a polycarbonate resin is produced by a melt transesterification method will be described.
In the melt transesterification method, for example, a transesterification reaction between a carbonic acid diester and a dihydroxy compound is performed.

The dihydroxy compound is as described above.
On the other hand, examples of the carbonic acid diester include dialkyl carbonate compounds such as dimethyl carbonate, diethyl carbonate, and di-tert-butyl carbonate; diphenyl carbonate; substituted diphenyl carbonate such as ditolyl carbonate, and the like. Among these, diphenyl carbonate and substituted diphenyl carbonate are preferable, and diphenyl carbonate is more preferable. In addition, carbonic acid diester may use 1 type and may use 2 or more types together by arbitrary combinations and a ratio.

  The ratio of the dihydroxy compound and the carbonic acid diester is arbitrary as long as the desired polycarbonate resin is obtained, but it is preferable to use an equimolar amount or more of the carbonic acid diester with respect to 1 mol of the dihydroxy compound, and above all, 1.01 mol or more is used. It is more preferable. The upper limit is usually 1.30 mol or less. By setting it as such a range, the amount of terminal hydroxyl groups can be adjusted to a suitable range.

  When producing a polycarbonate resin by the melt transesterification method, a transesterification catalyst is usually used. Any transesterification catalyst can be used. Among them, it is preferable to use, for example, an alkali metal compound and / or an alkaline earth metal compound. In addition, auxiliary compounds such as basic boron compounds, basic phosphorus compounds, basic ammonium compounds, and amine compounds may be used in combination. In addition, 1 type may be used for a transesterification catalyst and it may use 2 or more types together by arbitrary combinations and a ratio.

  In the melt transesterification method, the reaction temperature is usually 100 to 320 ° C. The pressure during the reaction is usually a reduced pressure condition of 2 mmHg or less. As a specific operation, a melt polycondensation reaction may be performed under the above-mentioned conditions while removing a by-product such as an aromatic hydroxy compound.

  The melt polycondensation reaction can be performed by either a batch method or a continuous method. When performing by a batch type, the order which mixes a reaction substrate, a reaction medium, a catalyst, an additive, etc. is arbitrary as long as a desired aromatic polycarbonate resin is obtained, What is necessary is just to set an appropriate order arbitrarily. However, considering the stability of the polycarbonate resin and the like, the melt polycondensation reaction is preferably carried out continuously.

  In the melt transesterification method, a catalyst deactivator may be used as necessary. As the catalyst deactivator, a compound that neutralizes the transesterification catalyst can be arbitrarily used. Examples thereof include sulfur-containing acidic compounds, phosphorus-containing acidic compounds and derivatives thereof. In addition, 1 type may be used for a catalyst deactivator and it may use 2 or more types together by arbitrary combinations and a ratio.

  The amount of the catalyst deactivator used is usually 0.5 equivalents or more, preferably 1 equivalent or more, and usually 10 equivalents or less, relative to the alkali metal or alkaline earth metal contained in the transesterification catalyst. Preferably it is 5 equivalents or less. Furthermore, it is 1 ppm or more normally with respect to polycarbonate resin, and is 100 ppm or less normally, Preferably it is 20 ppm or less.

As described above, the polycarbonate resin (A) used in the present invention has a terminal structure represented by the following general formula (1).

  In formula (1), n is an integer of 0 or 1, and R is an alkyl group having 5 to 14 carbon atoms. Since the polycarbonate resin (A) has the terminal structure of the above formula (1), a high fluidity is possible while maintaining the strength, and the hue is also good. For this reason, the molecular weight of the polycarbonate resin is usually lowered in order to improve the fluidity, but in the present invention, even when a desired molecular weight is adopted without lowering the molecular weight in the material design, a high fluidity is achieved. Therefore, it is possible to achieve high fluidity while maintaining high strength.

In formula (1), the number of carbon atoms of the alkyl group of R is preferably 6 or more, more preferably 7 or more, and preferably 12 or less, more preferably 10 or less. The alkyl group of R may be a straight chain or branched.
Among them, R is preferably at least one selected from the group consisting of n-octyl group, iso-octyl group and t-octyl group, more preferably t-octyl group, and a terminal in the general formula (1). It is particularly preferable that the structure is a t-octylphenyl group (that is, 1,1,3,3-tetramethylbutylphenyl group).

In the above formula (1), the position of the — (O) _n R group bonded to the phenyl group may be the ortho position, the meta position, or the para position, but the para position represented by the following general formula (1 ′) is desirable.

  Specific examples of the group represented by the above formula (1) or (1 ′) include p-pentylphenyl group, p-hexylphenyl group, p-heptylphenyl group, pn-octylphenyl group, p-iso -Octylphenyl group, pt-octylphenyl group, p-dodecylphenyl group and p-tetradecylphenyl group, p-nonylphenol, p-dodecylphenol, amylphenol, hexylphenol, heptylphenol, octylphenol, nonylphenol, decylphenol Alkylphenyl groups such as dodecylphenol, myristylphenol, p-hexyloxyphenyl group, pn-octyloxyphenyl group, p-iso-octyloxyphenyl group, pt-octyloxyphenyl group, p-dodecyloxy Alkoxy such as phenyl group It can be exemplified preferably a phenyl group.

The polycarbonate resin (A) of the present invention can be produced by using a monohydric phenol end-stopper represented by the following general formula (1a) when produced by polymerization.
(In the formula, n represents an integer of 0 or 1, and R represents an alkyl group having 5 to 14 carbon atoms.)

Specific examples of the terminal terminator represented by the general formula (1a) include p-pentylphenol, p-hexylphenol, p-heptylphenol, pn-octylphenol, p-iso-octylphenol, and pt-octylphenol. P-hexyloxy such as p-dodecylphenol and p-tetradecylphenol, p-nonylphenol, p-dodecylphenol, amylphenol, hexylphenol, heptylphenol, octylphenol, nonylphenol, decylphenol, dodecylphenol, myristylphenol Alkoxy such as phenol, pn-octyloxyphenol, p-iso-octyloxyphenol, pt-octyloxyphenol, p-dodecyloxyphenol Phenol can the mentioned Preferably, these can be used either or a plurality as chain terminator. In the formula (1a), the position of the — (O) _n R group bonded to the phenyl group may be the ortho position, the meta position, or the para position, but the para position is desirable.
Among them, it is possible to use one or more of pt-octylphenol and pn-octyloxyphenol as a terminal terminator, in addition to fluidity, strength of the molded product, and heat resistance, in terms of availability. Is more preferable.

Depending on the properties required for the material, two or more types of end stoppers may be used in combination without departing from the gist of the present invention, and may also be used in combination with a structure other than the structure represented by the general formula (1). Is possible.
Other terminal terminators that may be used in combination include, for example, phenol, p-cresol, o-cresol, 2,4-xylenol, pt-butylphenol, o-allylphenol, p-allylphenol, p-hydroxy. Styrene, p-hydroxy-α-methylstyrene, p-propylphenol, p-cumylphenol, p-phenylphenol, o-phenylphenol, p-trifluoromethylphenol, eugenol, palmitylphenol, stearylphenol, behenylphenol And p-hydroxybenzoic acid alkyl esters such as methyl ester, ethyl ester, propyl ester, butyl ester, amyl ester, hexyl ester, heptyl ester, and the like.
Two or more other end terminators can be used in combination. In particular, the terminal terminator that may be used in combination with the terminal terminator of the general formula (1a) includes pt-butylphenol from the viewpoints of purity and cost.
When other terminal terminator is used, it is preferably 20 mol% or less, more preferably 10 mol% or less, based on the total terminal terminator of the entire polycarbonate resin including the polycarbonate resin (A).

The molecular weight of the polycarbonate resin (A) is preferably a viscosity average molecular weight (Mv) of 10000 to 18000, more preferably 10500 or more, further preferably 11000 or more, particularly preferably 11500 or more, and most preferably 12000 or more. More preferably 17500 or less, still more preferably 17000, particularly preferably 16500. By making the viscosity average molecular weight more than the lower limit of the above range, the mechanical strength of the polycarbonate resin composition of the present invention can be further improved, and by making the viscosity average molecular weight not more than the upper limit of the above range, The fluidity of the polycarbonate resin composition of the invention can be suppressed and improved, and the molding processability can be improved and the thin-wall molding process can be easily performed.
The polycarbonate resin (A) may be used by mixing two or more kinds of polycarbonate resins having different viscosity average molecular weights. In this case, the polycarbonate resin having a viscosity average molecular weight outside the above preferred range is mixed. Also good.

In the present invention, the viscosity average molecular weight [Mv] of the polycarbonate resin refers to the intrinsic viscosity [η] (unit dl / g) at a temperature of 25 ° C. using a Ubbelohde viscometer using methylene chloride as a solvent. The viscosity formula of
It means a value calculated from η = 1.23 × 10 ⁻⁴ Mv ^0.83 . The intrinsic viscosity [η] is a value calculated from the following equation by measuring the specific viscosity [η _sp ] at each solution concentration [C] (g / dl).

  In addition, the polycarbonate resin composition of the present invention may be contained in combination with a polycarbonate resin having other terminal structure other than the polycarbonate resin (A) as long as the effects of the present invention are not significantly impaired. Examples of such a polycarbonate resin include a polycarbonate resin having a typical pt-butylphenyl group terminal structure as a commercially available product. The content of the polycarbonate resin having another terminal structure is preferably 40 parts by mass or less, more preferably 30 parts by mass or less, further preferably 20 parts by mass or less, particularly preferably 100 parts by mass of the polycarbonate resin (A). 15 parts by mass or less, most preferably 10 parts by mass or less.

  Moreover, in this invention, you may use in combination with a polycarbonate resin and another thermoplastic resin. Further, for example, for the purpose of further improving flame retardancy and impact resistance, a polycarbonate resin is copolymerized with an oligomer or polymer having a siloxane structure; for the purpose of further improving thermal oxidation stability and flame retardancy A monomer, oligomer or polymer having a copolymer; a monomer, oligomer or polymer having a dihydroxyanthraquinone structure for the purpose of improving thermal oxidation stability; A copolymer with an oligomer or polymer having an olefin structure; a copolymer with a polyester resin oligomer or polymer for the purpose of improving chemical resistance; Good.

  Further, in order to improve the appearance of the molded product and improve the fluidity, the polycarbonate resin may contain a polycarbonate oligomer. The viscosity average molecular weight (Mv) of this polycarbonate oligomer is usually 1500 or more, preferably 2000 or more, and is usually 9500 or less, preferably 9000 or less. Furthermore, the polycarbonate oligomer contained is preferably 30% by mass or less of the polycarbonate resin (including the polycarbonate oligomer).

Further, the polycarbonate resin may be not only a virgin raw material but also a polycarbonate resin regenerated from a used product (so-called material-recycled polycarbonate resin).
However, the regenerated polycarbonate resin is preferably 80% by mass or less of the polycarbonate resin, and more preferably 50% by mass or less. Recycled polycarbonate resin is likely to have undergone deterioration such as heat deterioration and aging deterioration, so when such polycarbonate resin is used more than the above range, hue and mechanical properties can be reduced. It is because there is sex.

[Polycarbonate copolymer (B)]
The polycarbonate resin composition of the present invention contains a polycarbonate copolymer (B) comprising a carbonate structural unit (i) represented by the following formula (2) and a carbonate structural unit (ii) represented by the following formula (3). . By blending such a polycarbonate copolymer (B) into the polycarbonate resin (A), the balance of strength such as fluidity, moldability and impact strength, bending strength, and repeated fatigue strength of the polycarbonate resin composition of the present invention is remarkable. It becomes a favorable product and is difficult to break even when molded, and a molded product with high strength can be obtained.

In formula (2), R ¹ represents an alkyl group or alkenyl group having 8 to 24 carbon atoms. When the polycarbonate resin composition is blended with the polycarbonate resin (A) by having an aliphatic hydrocarbon chain-containing substituent such as an alkyl group or alkenyl group having 8 or more carbon atoms, the polycarbonate resin at the time of melting High fluidity can be expressed by appropriately inhibiting the entanglement of the polymer chains and reducing friction between the polymer chains. From such a viewpoint, the alkyl group or alkenyl group of R ^{1 in} the above formula (2) preferably has 9 or more carbon atoms, more preferably 10 or more, and particularly preferably 11 or more. preferable. On the other hand, the carbon number of the alkyl group or alkenyl group of R ^{1 in} the carbonate structural unit of the above formula (2) is 24 or less, but if the long-chain fatty chain is too long, the heat resistance and mechanical properties are significantly reduced. In addition, the compatibility with the polycarbonate resin (A) is lowered, and mechanical properties and transparency may be impaired. From such a viewpoint, R ¹ described above preferably has 22 or less carbon atoms, more preferably 18 or less, and particularly preferably 16 or less.

Examples of the alkyl group having 8 to 24 carbon atoms include linear and branched alkyl groups, alkyl groups having a partial cyclic structure, etc. Among them, the flowability of the aromatic polycarbonate resin of the present invention is particularly high. In order to improve more effectively, it is preferably a linear or branched alkyl group.
Specific examples of the linear alkyl group include n-octyl group, n-nonyl group, n-decyl, n-undecyl group, n-dodecyl group, n-tridecyl group, n-tetradecyl group, n-pentadecyl group, n-hexadecyl group, n-heptadecyl, n-octadecyl group, n-nonadecyl group, n-icosyl group, n-icosyl group, n-henicosyl group, n-docosyl group, n-tricosyl group, n-tetracosyl group, etc. N-nonyl group, n-decyl, n-undecyl group, n-dodecyl group, n-hexadecyl group and n-octadecyl group are preferable, n-nonyl group, n-decyl, n-undecyl group, n -Dodecyl group is more preferable, and n-dodecyl group is particularly preferable. By having such an alkyl group, the fluidity | liquidity and impact resistance of the polycarbonate resin composition of this invention can be improved more effectively.

Specific examples of the branched alkyl group include methylheptyl group, methyloctyl group, methylnonyl group, methyldecyl, methylundecyl group, methyldodecyl group, methyltridecyl group, methyltetradecyl group, methylpentadecyl group, methylhexadecyl group. Decyl group, methylheptadecyl, methyloctadecyl group, methylnonadecyl group, methylicosyl group, methylicosyl group, methylhenicosyl group, methyldocosyl group, methyltricosyl group,
Dimethylheptyl, dimethyloctyl, dimethylnonyl, dimethyldecyl, dimethylundecyl, dimethyldodecyl, dimethyltridecyl, dimethyltetradecyl, dimethylpentadecyl, dimethylhexadecyl, dimethylheptadecyl, dimethyl Octadecyl, dimethylnonadecyl, dimethylicosyl, dimethylicosyl, dimethylhenicosyl, dimethyldocosyl,
Trimethylheptyl, trimethyloctyl, trimethylnonyl, trimethyldecyl, trimethylundecyl, trimethyldodecyl, trimethyltridecyl, trimethyltetradecyl, trimethylpentadecyl, trimethylhexadecyl, trimethylheptadecyl, trimethyl Octadecyl group, trimethylnonadecyl group, trimethylicosyl group, trimethylicosyl group, trimethylhenicosyl group,
Ethylhexyl group, ethylheptyl group, ethyloctyl group, ethylnonyl group, ethyldecyl, ethylundecyl group, ethyldodecyl group, ethyltridecyl group, ethyltetradecyl group, ethylpentadecyl group, ethylhexadecyl group, ethylheptadecyl, Ethyloctadecyl group, ethylnonadecyl group, ethylicosyl group, ethylicosyl group, ethylhenicosyl group, ethyldocosyl group,
Propylhexyl, propylheptyl, propyloctyl, propylnonyl, propyldecyl, propylundecyl, propyldodecyl, propyltridecyl, propyltetradecyl, propylpentadecyl, propylhexadecyl, propyl Heptadecyl, propyloctadecyl, propylnonadecyl, propylicosyl, propylicosyl, propylhenicosyl,
Butylhexyl, butylheptyl, butyloctyl, butylnonyl, butyldecyl, butylundecyl, butyldodecyl, butyltridecyl, butyltetradecyl, butylpentadecyl, butylhexadecyl, butylheptadecyl Butyloctadecyl group, butylnonadecyl group, butylicosyl group, and butylicosyl group.
In the example of the branched alkyl group, the position of branching is arbitrary.

  Specific examples of the alkenyl group are not particularly limited as long as the linear alkyl group and the branched alkyl group have one or more carbon-carbon double bonds in the structure. As, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group, heptadecenyl group, octadecenyl group, nonadecenyl group, icosenyl group, heicosenyl group, dococenyl group, tricosenyl group, , A tetracocenyl group and a 4,8,12-trimethyltridecyl group.

R ² and R ^{3 in} the carbonate structural unit (i) of the formula (2) represent a monovalent hydrocarbon group having 1 to 15 carbon atoms. By having a monovalent hydrocarbon group having 1 to 15 carbon atoms, the fluidity, strength, hardness, chemical resistance and the like of the polycarbonate resin composition of the present invention can be improved. Preferred examples of the monovalent hydrocarbon group having 1 to 15 carbon atoms include an alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, and the like. Or it may be annular. Such monovalent carbon hydrogen groups include methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl, n-hexyl, and cyclohexyl. Group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl, n-undecyl group, n-dodecyl group, n-tridecyl group, n-tetradecyl group, n-pentadecyl group, phenyl group, tolyl A methyl group is preferable.

  Moreover, although a and b in carbonate structural unit (2) represent the integer of 0-4 each independently, 0-2 are preferable, 0-1 are more preferable, and it is still more preferable that it is 0.

  Specific examples of such a carbonate structural unit (i) include structural units represented by the following formulas (4) to (13), among which the structural units represented by the formulas (4) to (11) are more preferable. Preferably, the structural units of the formulas (5) to (8) are more preferable, the structural unit of the formula (5) or (7) is particularly preferable, and the structural unit of the formula (7) is most preferable.

  Moreover, the carbonate structural unit (i) represented by the above formula (2) of the polycarbonate copolymer (B) contained in the polycarbonate resin composition of the present invention specifically includes, for example, the following formulas (14) to (16): The structural unit represented by these is mentioned. Among these, the structural unit represented by the formula (14) is more preferable because the thermal stability tends to be improved, but the isomer structures of the formulas (15) to (16) may be included in an arbitrary ratio.

  From such a viewpoint, specific examples of the more preferable carbonate structure (i) are preferably structural units represented by the following formulas (17) to (26), and in particular, the formulas (17) to (24). The structural units of formulas (18) to (21) are more preferred, the structural units of formulas (18) and (20) are particularly preferred, and the structural unit of formula (20) is most preferred.

  The carbonate structural unit (ii) represented by the above formula (3) in the polycarbonate copolymer (B) of the polycarbonate resin composition of the present invention is preferably a structural unit derived from bisphenol A represented by the following formula (27). However, the isomer structural unit represented by the formula (28) may be contained in an arbitrary ratio.

  Further, in the polycarbonate copolymer (B) contained in the polycarbonate resin composition of the present invention, the carbonate structural unit (i) represented by the above formula (2) in the polycarbonate copolymer (B) and the above formula (3) are used. The proportion of the carbonate structural unit (i) represented by the formula (2) is preferably more than 10 mol% and less than 39 mol% with respect to 100 mol% in total of the carbonate structural units (ii). The proportion of the carbonate structural unit represented by the above formula (2) is more preferably 12 mol% or more, further preferably 14 mol% or more, particularly preferably 16 mol% or more, particularly preferably 18 mol% or more, and most preferably 22 mol% or more. . Moreover, 38.5 mol% or less is more preferable, 38 mol% or less is more preferable, 37.5 mol% or less is preferable among these, 37 mol% or less is especially preferable, and 36.5 mol% or less is the most preferable.

<Molecular weight of polycarbonate copolymer (B)>
The molecular weight of the polycarbonate copolymer (B) contained in the polycarbonate resin composition of the present invention is not particularly limited, but is usually 5000 to 50000 in terms of viscosity average molecular weight (Mv) converted from the solution viscosity. When the viscosity average molecular weight is less than the lower limit, the mechanical properties of the polycarbonate resin composition of the present invention tend to be lowered, and the polycarbonate copolymer (B) tends to bleed. Moreover, when a viscosity average molecular weight exceeds the said upper limit, since there exists a tendency for fluidity | liquidity to become inadequate, it is unpreferable. From such a viewpoint, the viscosity average molecular weight (Mv) of the polycarbonate copolymer (B) is preferably 9000 or more, more preferably 10,000 or more, further preferably 11000 or more, and preferably 30000 or less, more preferably 25000 or less. More preferably, it is 20000 or less, and particularly preferably 18000 or less.
The definition and measurement method of the viscosity average molecular weight (Mv) of the polycarbonate copolymer (B) are the same as those of the viscosity average molecular weight (Mv) of the polycarbonate resin (A) described above.

<Amount of terminal hydroxyl groups of polycarbonate copolymer (B)>
The amount of terminal hydroxyl groups of the polycarbonate copolymer (B) is not particularly limited, but is usually 10 to 2000 ppm. Moreover, it is preferably 20 ppm or more, more preferably 50 ppm or more, and further preferably 100 ppm or more. On the other hand, it is preferably 1500 ppm or less, more preferably 1000 ppm or less, and further preferably 700 ppm or less. If the amount of terminal hydroxyl groups is not less than the lower limit of the above range, the hue and productivity of the polycarbonate copolymer (B) of the present invention can be further improved. The heat stability and wet heat stability of the polycarbonate resin composition can be further improved.

  In addition, the unit of terminal hydroxyl group concentration is the same as the measuring method and definition of the terminal hydroxyl group of the above-mentioned polycarbonate resin (A).

<Production method of polycarbonate copolymer (B)>
The polycarbonate copolymer (B) can be obtained by polycondensation of an aromatic dihydroxy compound necessary for forming the above carbonate structure and a carbonate-forming compound. Examples of the aromatic dihydroxy compound necessary for forming the carbonate structural unit (i) include an aromatic dihydroxy compound represented by the following formula (29).

  Specific examples of the aromatic dihydroxy compound necessary for forming the carbonate structural unit (i) include aromatic dihydroxy compounds represented by the following formulas (30) to (32). Among them, the aromatic dihydroxy compound represented by the formula (30) is more preferable because the thermal stability tends to be improved, but the aromatic dihydroxy compound represented by the formulas (31) to (32) is included in an arbitrary ratio. Also good.

In the formulas (29) to (32), the definitions and preferred examples of R ¹ , R ² , R ³ , a and b are the description of the carbonate structural unit (i) represented by the above formula (2). The same. From such a viewpoint, specific examples of the aromatic dihydroxy compound necessary for forming a more preferable carbonate structural unit (i) include the following.

  1,1-bis (4-hydroxyphenyl) octane, 1,1-bis (2-hydroxyphenyl) octane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) octane, 1,1-bis (4-hydroxyphenyl) nonane, 1,1-bis (2-hydroxyphenyl) nonane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) nonane, 1,1-bis (4-hydroxyphenyl) ) Decane, 1,1-bis (2-hydroxyphenyl) decane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) decane, 1,1-bis (4-hydroxyphenyl) undecane, 1, 1-bis (2-hydroxyphenyl) undecane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) undecane, , 1-bis (4-hydroxyphenyl) dodecane, 1,1-bis (2-hydroxyphenyl) dodecane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) dodecane, 1,1-bis ( 4-hydroxyphenyl) tridecane, 1,1-bis (2-hydroxyphenyl) tridecane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) tridecane, 1,1-bis (4-hydroxyphenyl) Tetradecane, 1,1-bis (2-hydroxyphenyl) tetradecane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) tetradecane, 1,1-bis (4-hydroxyphenyl) pentadecane, 1,1 -Bis (2-hydroxyphenyl) pentadecane, 1- (2-hydroxyphenyl) -1- (4 Hydroxyphenyl) pentadecane, 1,1-bis (4-hydroxyphenyl) hexadecane, 1,1-bis (2-hydroxyphenyl) hexadecane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) hexadecane, 1,1-bis (4-hydroxyphenyl) heptadecane, 1,1-bis (2-hydroxyphenyl) heptadecane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) heptadecane, 1,1-bis (4-hydroxyphenyl) octadecane, 1,1-bis (2-hydroxyphenyl) octadecane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) octadecane, 1,1-bis (4-hydroxyphenyl) ) Nonadecane, 1,1-bis (2-hydroxyphenyl) nona Tadecane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) nonadecane,

  1,1-bis (4-hydroxyphenyl) icosane, 1,1-bis (2-hydroxyphenyl) icosane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) icosane, 1,1-bis (4-hydroxyphenyl) henicosane, 1,1-bis (2-hydroxyphenyl) henicosane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) henicosane, 1,1-bis (4-hydroxyphenyl) ) Docosane, 1,1-bis (2-hydroxyphenyl) docosane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) docosane, 1,1-bis (4-hydroxyphenyl) tricosane, 1, 1-bis (2-hydroxyphenyl) tricosane, 1- (2-hydroxyphenyl) -1- (4-hydroxy Phenyl) tricosane, 1,1-bis (4-hydroxyphenyl) tetracosane, 1,1-bis (2-hydroxyphenyl) tetracosane, 1- (2-hydroxyphenyl) -1- (4-hydroxyphenyl) tetracosane, 1 , 1-bis (3-methyl-4-hydroxyphenyl) octane, 1,1-bis (2-hydroxy-3-methylphenyl) octane, 1- (2-hydroxy-3-methyl-phenyl) -1- ( 3-methyl-4-hydroxyphenyl) octane, 1,1-bis (3-methyl-4-hydroxyphenyl) nonane, 1,1-bis (2-hydroxy-3-methylphenyl) nonane, 1- (2- Hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) nonane, 1,1-bis (3-methyl-4-hydro) Loxyphenyl) decane, 1,1-bis (2-hydroxy-3-methylphenyl) decane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) decane, 1,1-bis (3-methyl-4-hydroxyphenyl) undecane, 1,1-bis (2-hydroxy-3-methylphenyl) undecane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) undecane, 1,1-bis (3-methyl-4-hydroxyphenyl) dodecane, 1,1-bis (2-hydroxy-3-methylphenyl) dodecane, 1- (2 -Hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) dodecane, 1,1-bis (3-methyl-4-hydroxypheny 1) Tridecane, 1,1-bis (2-hydroxy-3-methylphenyl) tridecane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) tridecane, , 1-bis (3-methyl-4-hydroxyphenyl) tetradecane, 1,1-bis (2-hydroxy-3-methylphenyl) tetradecane, 1- (2-hydroxy-3-methyl-phenyl) -1- ( 3-methyl-4-hydroxyphenyl) tetradecane,

  1,1-bis (3-methyl-4-hydroxyphenyl) pentadecane, 1,1-bis (2-hydroxy-3-methylphenyl) pentadecane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) pentadecane, 1,1-bis (3-methyl-4-hydroxyphenyl) hexadecane, 1,1-bis (2-hydroxy-3-methylphenyl) hexadecane, 1- (2 -Hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) hexadecane, 1,1-bis (3-methyl-4-hydroxyphenyl) heptadecane, 1,1-bis (2-hydroxy) -3-methylphenyl) heptadecane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxy Enyl) heptadecane, 1,1-bis (3-methyl-4-hydroxyphenyl) octadecane, 1,1-bis (2-hydroxy-3-methylphenyl) octadecane, 1- (2-hydroxy-3-methyl-phenyl) ) -1- (3-methyl-4-hydroxyphenyl) octadecane, 1,1-bis (3-methyl-4-hydroxyphenyl) nonadecane, 1,1-bis (2-hydroxy-3-methylphenyl) nonatadecane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) nonadecane, 1,1-bis (3-methyl-4-hydroxyphenyl) icosane, 1,1-bis (2-hydroxy-3-methylphenyl) icosane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4 Hydroxyphenyl) icosane, 1,1-bis (3-methyl-4-hydroxyphenyl) henicosane, 1,1-bis (2-hydroxy-3-methylphenyl) henicosane, 1- (2-hydroxy-3-methyl-) Phenyl) -1- (3-methyl-4-hydroxyphenyl) henicosane, 1,1-bis (3-methyl-4-hydroxyphenyl) docosane, 1,1-bis (2-hydroxy-3-methylphenyl) docosane 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) docosane, 1,1-bis (3-methyl-4-hydroxyphenyl) tricosane, 1,1- Bis (2-hydroxy-3-methylphenyl) tricosane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl- 4-hydroxyphenyl) tricosane,

  1,1-bis (3-methyl-4-hydroxyphenyl) tetracosane, 1,1-bis (2-hydroxy-3-methylphenyl) tetracosane, 1- (2-hydroxy-3-methyl-phenyl) -1- (3-methyl-4-hydroxyphenyl) tetracosane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) octane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) nonane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) decane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) undecane, 1,1-bis (3,5-dimethyl- 4-hydroxyphenyl) dodecane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) tridecane, 1,1-bis (3,5-dimethyl-4-hydride) Xylphenyl) tetradecane, 1,1-bis (3-ethyl-4-hydroxyphenyl) nonane, 1,1-bis (3-ethyl-4-hydroxyphenyl) decane, 1,1-bis (3-ethyl-4-) Hydroxyphenyl) undecane, 1,1-bis (3-ethyl-4-hydroxyphenyl) dodecane, 1,1-bis (3-propyl-4-hydroxyphenyl) nonane, 1,1-bis (3-propyl-4) -Hydroxyphenyl) decane, 1,1-bis (3-propyl-4-hydroxyphenyl) undecane, 1,1-bis (3-propyl-4-hydroxyphenyl) dodecane, 1,1-bis (3-butyl- 4-hydroxyphenyl) nonane, 1,1-bis (3-butyl-4-hydroxyphenyl) decane, 1,1-bis (3-butyl-4-hydro Ciphenyl) undecane, 1,1-bis (3-butyl-4-hydroxyphenyl) dodecane, 1,1-bis (3-nonyl-4-hydroxyphenyl) nonane, 1,1-bis (3-nonyl-4-) Hydroxyphenyl) decane, 1,1-bis (3-nonyl-4-hydroxyphenyl) undecane, 1,1-bis (3-nonyl-4-hydroxyphenyl) dodecane, and the like.

  As an aromatic dihydroxy compound necessary for forming the carbonate structural unit (i) of the polycarbonate copolymer (B), 1,1-bis (4-hydroxyphenyl) is particularly preferred from the viewpoint of thermal stability, hue, and impact strength. ) Octane, 1,1-bis (4-hydroxyphenyl) nonane, 1,1-bis (4-hydroxyphenyl) decane, 1,1-bis (4-hydroxyphenyl) undecane, 1,1-bis (4- Hydroxyphenyl) dodecane, 1,1-bis (4-hydroxyphenyl) tridecane, 1,1-bis (4-hydroxyphenyl) tetradecane, 1,1-bis (4-hydroxyphenyl) pentadecane, 1,1-bis ( 4-hydroxyphenyl) hexadecane, 1,1-bis (4-hydroxyphenyl) heptadecane, 1,1-bi (4-hydroxyphenyl) octadecane and 1,1-bis (4-hydroxyphenyl) nonadecane are more preferred, 1,1-bis (4-hydroxyphenyl) decane, 1,1-bis (4-hydroxyphenyl) undecane, 1,1-bis (4-hydroxyphenyl) dodecane and 1,1-bis (4-hydroxyphenyl) tridecane are more preferable, and 1,1-bis (4-hydroxyphenyl) dodecane is most preferable.

  Specific examples of the aromatic dihydroxy compound necessary for forming the carbonate structural unit (ii) include 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (2-hydroxyphenyl) propane, 2- (2-hydroxyphenyl) -2- (4-hydroxyphenyl) propane may be mentioned, among which 2,2-bis (4-hydroxyphenyl) propane (from the viewpoint of thermal stability, hue and impact strength) So-called bisphenol A) is more preferred.

  Moreover, when an example of a carbonate-forming compound is given, carbonyl halide, carbonate ester or the like is used. In addition, a carbonate forming compound may use 1 type and may use 2 or more types together by arbitrary combinations and a ratio.

Specific examples of carbonyl halides include phosgene; haloformates such as bischloroformate of dihydroxy compounds and monochloroformate of dihydroxy compounds.
Specific examples of the carbonate ester include compounds represented by the following formula (33): aryl carbonates, dialkyl carbonates, biscarbonates of dihydroxy compounds, monocarbonates of dihydroxy compounds, cyclic carbonates And carbonate bodies of dihydroxy compounds such as

In formula (33), R ⁴ and R ⁵ each independently represents an alkyl group having 1 to 30 carbon atoms, an aryl group, or an arylalkyl group. Hereinafter, when R ⁴ and R ⁵ are an alkyl group or an arylalkyl group, they may be referred to as dialkyl carbonates, and when they are aryl groups, they may be referred to as diaryl carbonates. Among these, from the viewpoint of reactivity with the aromatic dihydroxy compound, both R ⁴ and R ⁵ are preferably aryl groups, and more preferably diaryl carbonates represented by the following formula (34).

In formula (34), R ⁶ and R ⁷ each independently represent a halogen atom, a nitro group, a cyano group, an alkyl group having 1 to 20 carbon atoms, an alkoxycarbonyl group having 1 to 20 carbon atoms, or 4 to 20 carbon atoms. And an aryl group having 6 to 20 carbon atoms, p and q each independently represent an integer of 0 to 5.

  Specific examples of such carbonate esters include dialkyl carbonates such as dimethyl carbonate, diethyl carbonate, and di-t-butyl carbonate, diphenyl carbonate, bis (4-methylphenyl) carbonate, bis (4-chlorophenyl) carbonate, and bis (4-fluorophenyl) carbonate, bis (2-chlorophenyl) carbonate, bis (2,4-difluorophenyl) carbonate, bis (4-nitrophenyl) carbonate, bis (2-nitrophenyl) carbonate, bis (methylsalicylphenyl) ) (Substituted) diaryl carbonates such as carbonate and ditolyl carbonate are mentioned, among which diphenyl carbonate is preferred. In addition, these carbonate ester can be used individually or in mixture of 2 or more types.

  In addition, the carbonate ester may be preferably substituted with dicarboxylic acid or dicarboxylic acid ester in an amount of 50 mol% or less, more preferably 30 mol% or less. Representative dicarboxylic acids or dicarboxylic acid esters include terephthalic acid, isophthalic acid, diphenyl terephthalate, and diphenyl isophthalate. When substituted with such a dicarboxylic acid or dicarboxylic acid ester, a polyester carbonate is obtained.

  The method for producing the polycarbonate copolymer (B) is the same as the method exemplified as the method for producing the polycarbonate resin (A).

<Content of polycarbonate copolymer (B)>
In the polycarbonate resin composition of the present invention, the content of the polycarbonate copolymer (B) is 2 to 100 parts by mass with respect to 100 parts by mass of the polycarbonate resin (A). If it is less than 2 parts by mass, the balance between fluidity and strength is insufficient, and if it exceeds 100 parts by mass, the heat resistance is lowered. The content of the polycarbonate copolymer (B) is preferably 3 parts by mass or more, more preferably 4 parts by mass or more, further preferably 5 parts by mass or more, particularly preferably 6 parts by mass or more, and particularly preferably 7 parts by mass or more. Preferably, it is 8 parts by mass or less, more preferably 80 parts by mass or less, further preferably 70 parts by mass or less, particularly preferably 60 parts by mass or less, and particularly preferably 50 parts by mass or less.

[Phosphorus stabilizer (C) and / or antioxidant (D)]
The polycarbonate resin composition of the present invention preferably contains a phosphorus stabilizer (C) and / or an antioxidant (D). By including such a phosphorus stabilizer (C) and / or antioxidant (D), the hue and thermal stability of the polycarbonate resin composition of the present invention can be improved.

<Phosphorus heat stabilizer (C)>
The phosphorus-based heat stabilizer (C) is not particularly limited as long as it is a known one, and examples thereof include phosphorous acid, phosphoric acid, phosphite ester, and phosphate ester. Phosphite such as phosphite and phosphonite Acid esters are preferred.
In the present invention, a preferable phosphorus-based heat stabilizer includes a phosphite represented by the following formula (35).
In Formula (35), R ⁸ is an aryl group or an alkyl group, and may be the same or different.

When R ⁸ is an aryl group, R ⁸ is preferably an aryl group represented by the following formula (36), formula (37), or formula (38).

In the above formulas (36) to (37), R ⁹ and R ¹⁰ each represent an alkyl group having 1 to 10 carbon atoms.

  Examples of such phosphites include bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite and bis (2,6-di-tert-butyl-4-methylphenyl) pentaerythritol. Preferred examples include diphosphite, bis (2,4-dicumylphenyl) pentaerythritol diphosphite, and specifically, “ADEKA STAB PEP-24G”, “ADEKA STAB PEP-36” manufactured by ADEKA, and Dover Chemical It is marketed as “Dobafos S-9228”.

In the above formula (35), the alkyl group of ^{R 8,} preferably an alkyl group having 1 to 30 carbon atoms. Specific examples of such phosphites include distearyl pentaerythritol diphosphite and dinonyl pentaerythritol diphosphite. Among them, distearyl pentaerythritol diphosphite is preferable.

In the present invention, another preferred phosphorus-based heat stabilizer is a phosphite represented by the following general formula (39).

In said formula (39), R < ¹¹ > -R < ¹⁵ > is a hydrogen atom, an aryl group, or a C1-C20 alkyl group, and may respectively be same or different.
In the above formula (39), examples of the aryl group or alkyl group in R ^{11 to} R ¹⁵ include a phenyl group, a methyl group, an ethyl group, a propyl group, an n-propyl group, an n-butyl group, and a tert-butyl group. In particular, tris (2,4-di-tert-butylphenyl) phosphite in which R ¹¹ and R ¹³ are tert-butyl groups and R ¹² , R ¹⁴ and R ¹⁵ are hydrogen atoms is preferred. Is commercially available from ADEKA under the trade name “ADK STAB 2112”.

<Antioxidant (D)>
As the antioxidant (D), any conventionally known one can be used, and in particular, a phenol compound is preferable, and as the phenolic antioxidant, for example, a hindered phenolic antioxidant is preferably exemplified.

  Specific examples thereof include pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl). ) Propionate, thiodiethylenebis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], N, N′-hexane-1,6-diylbis [3- (3,5-di-) tert-butyl-4-hydroxyphenylpropionamide), 2,4-dimethyl-6- (1-methylpentadecyl) phenol, diethyl [[3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl ] Methyl] phosphoate, 3,3 ′, 3 ″, 5,5 ′, 5 ″ -hexa-tert-butyl-a, a ′, ''-(Mesitylene-2,4,6-triyl) tri-p-cresol, 4,6-bis (octylthiomethyl) -o-cresol, ethylenebis (oxyethylene) bis [3- (5-tert- Butyl-4-hydroxy-m-tolyl) propionate], hexamethylenebis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], 1,3,5-tris (3,5- Di-tert-butyl-4-hydroxybenzyl) -1,3,5-triazine-2,4,6 (1H, 3H, 5H) -trione, 2,6-di-tert-butyl-4- (4 6-bis (octylthio) -1,3,5-triazin-2-ylamino) phenol and the like.

  Among them, pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate preferable. Specific examples of such a phenolic antioxidant include “Irganox 1010”, “Irganox 1076” manufactured by BASF, “Adekastab AO-50”, “Adekastab AO-60” manufactured by ADEKA, and the like. Is mentioned.

In the polycarbonate resin composition of the present invention, one type of phosphorous heat stabilizer (C) may be contained, or two or more types may be mixed and contained. Moreover, 1 type may contain antioxidant (D) and 2 or more types may be mixed and contained. Furthermore, you may use together a phosphorus thermal stabilizer (C) and antioxidant (D).
The preferable content of the phosphorus-based heat stabilizer (C) and / or the antioxidant (D) is usually 0.005 to 0.5 parts by mass with respect to 100 parts by mass of the polycarbonate resin (A). When the content is less than the lower limit, the hue and thermal stability improvement effect of the polycarbonate resin composition of the present invention tends to be insufficient, whereas when the content exceeds the upper limit, the effect reaches a peak or during molding. This is not preferable because gas is easily generated and mold contamination is likely to occur. From such a viewpoint, the content of the phosphorus-based heat stabilizer (C) and / or the antioxidant (D) is more preferably 0.01 parts by mass or more, further preferably 0.02 parts by mass or more, particularly preferably. Is 0.05 parts by mass or more. Further, it is more preferably 0.3 parts by mass or less, further preferably 0.2 parts by mass or less, and particularly preferably 0.1 parts by mass or less.

[Polyalkylene glycol (E)]
The polycarbonate resin composition of the present invention preferably contains a polyalkylene glycol (E) having a number average molecular weight of 500 to 5000, and the preferable content thereof is 0.1 parts per 100 parts by mass of the polycarbonate resin (A). It is -4 mass parts, More preferably, it is 0.2-3 mass parts, More preferably, it is 0.3-2 mass parts.

  As the polyalkylene glycol (E), various polyalkylene glycols can be used. The linear alkylene ether unit (P1) represented by the following general formula (I) and the following general formulas (II-1) to (II-4) The polyalkylene glycol copolymer (E3) having a branched alkylene ether unit (P2) selected from the units represented by

(In formula (I), n represents an integer of 3 to 6.)

(In formulas (II-1) to (II-4), R ^{1 to} R ¹⁰ each independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and each of formulas (II-1) to (II- In 4), at least one of R ^{1 to} R ¹⁰ is an alkyl group having 1 to 3 carbon atoms.)

  As the linear alkylene ether unit (P1) represented by the above general formula (I), when described as glycol, trimethylene glycol in which n is 3, tetramethylene glycol in which n is 4, penta in which n is 5 Examples include methylene glycol and hexamethylene glycol in which n is 6, preferably trimethylene glycol and tetramethylene glycol, and tetramethylene glycol is particularly preferable.

  Trimethylene glycol is industrially obtained by hydroformylating ethylene oxide to obtain 3-hydroxypropionaldehyde and hydrogenating it or hydrogenating 3-hydroxypropionaldehyde obtained by hydrating acrolein with a Ni catalyst. Manufactured by the method. In recent years, trimethylene glycol has been produced by reducing glycerin, glucose, starch and the like to microorganisms by a bio method.

  As the branched alkylene ether unit represented by the general formula (II-1), when this is described as glycol, (2-methyl) ethylene glycol, (2-ethyl) ethylene glycol, (2,2-dimethyl) ethylene glycol, etc. (2-methyl) ethylene glycol is preferred.

  As a branched alkylene ether unit represented by the above general formula (II-2), when described as glycol, (2-methyl) trimethylene glycol, (3-methyl) trimethylene glycol, (2-ethyl) trimethylene glycol , (3-ethyl) triethylene glycol, (2,2-dimethyl) trimethylene glycol, (2,2-methylethyl) trimethylene glycol, (2,2-diethyl) trimethylene glycol (ie neopentyl glycol) , (3,3-dimethyl) trimethylene glycol, (3,3-methylethyl) trimethylene glycol, (3,3-diethyl) trimethylene glycol and the like.

  As a branched alkylene ether unit represented by the above general formula (II-3), when described as glycol, (3-methyl) tetramethylene glycol, (4-methyl) tetramethylene glycol, (3-ethyl) tetramethylene glycol , (4-ethyl) tetramethylene glycol, (3,3-dimethyl) tetramethylene glycol, (3,3-methylethyl) tetramethylene glycol, (3,3-diethyl) tetramethylene glycol, (4,4-dimethyl) ) Tetramethylene glycol, (4,4-methylethyl) tetramethylene glycol, (4,4-diethyl) tetramethylene glycol and the like, and (3-methyl) tetramethylene glycol is preferred.

  As a branched alkylene ether unit represented by the above general formula (II-4), when described as glycol, (3-methyl) pentamethylene glycol, (4-methyl) pentamethylene glycol, (5-methyl) pentamethylene glycol , (3-ethyl) pentamethylene glycol, (4-ethyl) pentamethylene glycol, (5-ethyl) pentamethylene glycol, (3,3-dimethyl) pentamethylene glycol, (3,3-methylethyl) pentamethylene glycol (3,3-diethyl) pentamethylene glycol, (4,4-dimethyl) pentamethylene glycol, (4,4-methylethyl) pentamethylene glycol, (4,4-diethyl) pentamethylene glycol, (5,5 -Dimethyl) pentamethyleneglycol , (5,5-methylethyl) pentamethylene glycol, and the like (5,5-diethyl) pentamethylene glycol.

  As mentioned above, although the unit represented by general formula (II-1)-(II-4) which comprises branched alkylene ether unit (P2) was described as an example for convenience, glycol is not limited to these, It may be an alkylene oxide or a polyether-forming derivative thereof.

  Preferable examples of the polyalkylene glycol copolymer (E3) include a copolymer composed of a tetramethylene ether unit and a unit represented by the general formula (II-3), particularly a tetramethylene ether unit and 3- A copolymer comprising methyltetramethylene ether units is more preferred. Moreover, the copolymer which consists of a tetramethylene ether unit and the unit represented by the said general formula (II-1) is also preferable, and especially the copolymer which consists of a tetramethylene ether unit and 2-methylethylene ether unit is more preferable. A copolymer comprising a tetramethylene ether unit and a 2,2-dimethyltrimethylene ether unit, that is, a neopentyl glycol ether unit is also preferable.

  A method for producing a polyalkylene glycol copolymer having a linear alkylene ether unit (P1) and a branched alkylene ether unit (P2) is known, and glycols, alkylene oxides or polyether-forming derivatives thereof as described above are used. Usually, it can manufacture by carrying out polycondensation using an acid catalyst.

  The polyalkylene glycol copolymer may be a random copolymer or a block copolymer.

The linear alkylene ether unit (P1) represented by the general formula (I) of the polyalkylene glycol copolymer (E3) and the branched alkylene ether represented by the general formulas (II-1) to (II-4) The copolymerization ratio of the unit (P2) is preferably a molar ratio of (P1) / (P2), preferably 95/5 to 5/95, more preferably 93/7 to 40/60, still more preferably. 90/10 to 65/35, and it is more preferable that the linear alkylene ether unit (P1) is rich.
The mole fraction is measured using a ¹ H-NMR measuring apparatus and deuterated chloroform as a solvent.

  In the polyalkylene glycol copolymer (E3), the terminal group is preferably a hydroxyl group. In addition, even if one or both ends are blocked with alkyl ether, aryl ether, aralkyl ether, fatty acid ester, aryl ester, etc., there is no effect on the performance, and etherified products or esterified products can be used as well. .

  As the alkyl group constituting the alkyl ether, either linear or branched can be used, and an alkyl group having 1 to 22 carbon atoms such as a methyl group, an ethyl group, a propyl group, a butyl group, an octyl group, a lauryl group, Preferred examples include stearyl groups such as polyalkylene glycol methyl ether, ethyl ether, butyl ether, lauryl ether, and stearyl ether.

  The aryl group constituting the aryl ether is preferably an aryl group having 6 to 22 carbon atoms, more preferably 6 to 12 carbon atoms, still more preferably 6 to 10 carbon atoms, such as a phenyl group, a tolyl group, or a naphthyl group. And a phenyl group, a tolyl group and the like are preferable. The aralkyl group is preferably an aralkyl group having 7 to 23 carbon atoms, more preferably 7 to 13 carbon atoms, still more preferably 7 to 11 carbon atoms, and examples thereof include a benzyl group and a phenethyl group. Particularly preferred.

The fatty acid constituting the fatty acid ester may be either linear or branched, and may be a saturated fatty acid or an unsaturated fatty acid.
The fatty acid constituting the fatty acid ester is a monovalent or divalent fatty acid having 1 to 22 carbon atoms, for example, a monovalent saturated fatty acid, such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, enanthic acid. , Caprylic acid, capric acid, lauric acid, myristic acid, pentadecylic acid, palmitic acid, heptadecylic acid, stearic acid, nonadecanoic acid, arachidic acid, behenic acid and monounsaturated fatty acids such as oleic acid, elaidic acid, Unsaturated fatty acids such as linoleic acid, linolenic acid, and arachidonic acid, and divalent fatty acids having 10 or more carbon atoms such as sebacic acid, undecanedioic acid, dodecanedioic acid, tetradecanedioic acid, tapsiaic acid and decenedioic acid, undecene Diacid, dodecenedioic acid.

  The aryl group constituting the aryl ester is preferably an aryl group having 6 to 22 carbon atoms, more preferably 6 to 12 carbon atoms, and still more preferably 6 to 10 carbon atoms, such as a phenyl group, a tolyl group, or a naphthyl group. And a phenyl group, a tolyl group and the like are preferable. Even if the end-capping group is an aralkyl group, it exhibits good compatibility with the aromatic polycarbonate resin (A), and thus can exhibit the same action as an aryl group. The aralkyl group is preferably an aralkyl group having 7 to 23 carbon atoms, more preferably 7 to 13 carbon atoms, still more preferably 7 to 11 carbon atoms, and examples thereof include a benzyl group and a phenethyl group. Particularly preferred.

  The polyalkylene glycol copolymer (E3) includes, among others, a copolymer composed of tetramethylene ether units and 2-methylethylene ether units, a copolymer composed of tetramethylene ether units and 3-methyltetramethylene ether units, tetra A copolymer consisting of a methylene ether unit and a 2,2-dimethyltrimethylene ether unit is particularly preferred. Specific examples of such a polyalkylene glycol copolymer include, for example, trade names (hereinafter the same) “polyserine DCB” manufactured by NOF Corporation, “PTG-L” manufactured by Hodogaya Chemical Co., Ltd., and “PTXG manufactured by Asahi Kasei Corporation. Or the like.

  As the polyalkylene glycol, a branched polyalkylene glycol (E1) represented by the following general formula (III-1) or a linear polyalkylene glycol (E2) represented by the following general formula (III-2) is also preferable. It is mentioned as a thing. The branched polyalkylene glycol represented by the following general formula (III-1) or the linear polyalkylene glycol represented by the following general formula (III-2) is a copolymer with other copolymer components. However, homopolymers are preferred.

(In Formula (III-1), R represents an alkyl group having 1 to 3 carbon atoms, and X and Y each independently represent a hydrogen atom, an aliphatic acyl group having 1 to 23 carbon atoms, or 1 to 1 carbon atoms. 23 represents an alkyl group, and n represents an integer of 10 to 400.)

(In formula (III-2), X and Y each independently represent a hydrogen atom, an aliphatic acyl group having 2 to 23 carbon atoms or an alkyl group having 1 to 22 carbon atoms, and m is an integer of 2 to 6) , P represents an integer of 6-100.)

  In said general formula (III-1), although the integer (degree of polymerization) n is 10-400, Preferably it is 15-200, More preferably, it is 20-100. When the degree of polymerization n is less than 10, the amount of gas generated during molding increases, and molding defects due to gas, for example, unfilling, gas burnout, and transfer defects may occur. On the other hand, when the polymerization degree n exceeds 400, the effect of improving the hue of the aromatic polycarbonate resin composition may not be sufficiently obtained.

  As the branched polyalkylene glycol, in general formula (III-1), X and Y are hydrogen atoms and R is a methyl group. Polypropylene glycol (poly (2-methyl) ethylene glycol) and an ethyl group are polybutylenes. Glycol (poly (2-ethyl) ethylene glycol) is preferred, and polybutylene glycol (poly (2-ethyl) ethylene glycol) is particularly preferred.

  In said general formula (III-2), although p (polymerization degree) is an integer of 6-100, Preferably it is 8-90, More preferably, it is 10-80. When the polymerization degree p is less than 6, gas is generated during molding, which is not preferable. On the other hand, when the degree of polymerization p exceeds 100, the compatibility is lowered, which is not preferable.

  As the linear polyalkylene glycol, in general formula (III-2), X and Y are hydrogen atoms, m is 2, polyethylene glycol, m is 3, polytrimethylene glycol, and m is 4. Preferred are tetramethylene glycol, polypentamethylene glycol in which m is 5, and polyhexamethylene glycol in which m is 6. More preferred are polytrimethylene glycol, polytetramethylene glycol, esterified products or etherified products thereof.

  Further, as polyalkylene glycol, even if one or both ends thereof are blocked with a fatty acid or an alcohol, there is no influence on the performance expression, and a fatty acid esterified product or an etherified product can be used in the same manner. X and / or Y in (III-1) and (III-2) may be an aliphatic acyl group or alkyl group having 1 to 23 carbon atoms.

As the fatty acid ester product, either a linear or branched fatty acid ester can be used, and the fatty acid constituting the fatty acid ester may be a saturated fatty acid or an unsaturated fatty acid. Also, those in which some hydrogen atoms are substituted with a substituent such as a hydroxyl group can be used.
The fatty acid constituting the fatty acid ester is a monovalent or divalent fatty acid having 1 to 23 carbon atoms, such as a monovalent saturated fatty acid, specifically formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid. , Enanthic acid, caprylic acid, capric acid, lauric acid, myristic acid, pentadecylic acid, palmitic acid, heptadecylic acid, stearic acid, nonadecanoic acid, arachidic acid, behenic acid, and monovalent unsaturated fatty acids, specifically, Unsaturated fatty acids such as oleic acid, elaidic acid, linoleic acid, linolenic acid and arachidonic acid, and divalent fatty acids having 10 or more carbon atoms, specifically sebacic acid, undecanedioic acid, dodecanedioic acid, tetradecanedioic acid , Tapsia and decenedioic acid, undecenedioic acid, dodecenedioic acid.
These fatty acids can be used alone or in combination. The fatty acid also includes a fatty acid having one or more hydroxyl groups in the molecule.

  Preferable specific examples of the fatty acid ester of the branched polyalkylene glycol include polypropylene glycol stearate in which R is a methyl group, X and Y are aliphatic acyl groups having 18 carbon atoms in the general formula (III-1), and R is Examples thereof include polypropylene glycol behenate in which a methyl group and X and Y are aliphatic acyl groups having 22 carbon atoms. Preferable specific examples of fatty acid esters of linear polyalkylene glycol include polyalkylene glycol monopalmitate, polyalkylene glycol dipalmitate, polyalkylene glycol monostearate, polyalkylene glycol distearate, polyalkylene glycol (Monopalmitic acid / monostearic acid) ester, polyalkylene glycol behenate and the like.

  The alkyl group constituting the alkyl ether of the polyalkylene glycol may be either linear or branched, for example, carbon number such as methyl group, ethyl group, propyl group, butyl group, octyl group, lauryl group, stearyl group, etc. Examples of such a polyalkylene glycol include alkylmethyl ether, ethyl ether, butyl ether, lauryl ether, stearyl ether and the like of polyalkylene glycol.

  Specific examples of the branched polyalkylene glycol (E1) represented by the general formula (III-1) include the product names “Uniol D-1000” and “Uniol PB-1000” manufactured by NOF Corporation. It is done.

The polyalkylene glycol copolymer (E3), the branched polyalkylene glycol (E1) represented by the general formula (III-1), and the linear polyalkylene glycol represented by the general formula (III-2) The number average molecular weight of the polyalkylene glycol such as (E2) is preferably 500 to 5000 as described above, more preferably 4000 or less, still more preferably 3000 or less, particularly preferably 2000 or less, and particularly preferably 1000. And most preferably 800 or less. Exceeding the upper limit of the above range is not preferable because the compatibility is lowered, and if it is lower than the lower limit of the above range, gas is generated during molding, which is not preferable.
The number average molecular weight of polyalkylene glycol here is the number average molecular weight calculated based on the hydroxyl value measured according to JIS K1577.

  Polyalkylene glycol (E) may be used individually by 1 type, or may use 2 or more types together.

[Epoxy compound (F)]
The resin composition of the present invention preferably contains an epoxy compound (F). By including the epoxy compound (F) together with the polyalkylene glycol (E), the heat discoloration can be further improved.

As the epoxy compound (F), a compound having one or more epoxy groups in one molecule is used. Specifically, phenyl glycidyl ether, allyl glycidyl ether, t-butylphenyl glycidyl ether, 3,4-epoxycyclohexylmethyl-3 ′, 4′-epoxycyclohexylcarboxylate, 3,4-epoxy-6-methylcyclohexylmethyl -3 ', 4'-epoxy-6'-methylcyclohexyl carboxylate, 2,3-epoxycyclohexylmethyl-3', 4'-epoxycyclohexyl carboxylate, 4- (3,4-epoxy-5-methylcyclohexyl) Butyl-3 ′, 4′-epoxycyclohexylcarboxylate, 3,4-epoxycyclohexylethylene oxide, cyclohexylmethyl 3,4-epoxycyclohexylcarboxylate, 3,4-epoxy-6-methylcyclohexylmethyl-6 ′ -Methylsiloxyl carboxylate, bisphenol-A diglycidyl ether, tetrabromobisphenol-A glycidyl ether, diglycidyl ester of phthalic acid, diglycidyl ester of hexahydrophthalic acid, bis-epoxy dicyclopentadienyl ether, bis- Epoxyethylene glycol, bis-epoxycyclohexyl adipate, butadiene diepoxide, tetraphenylethylene epoxide, octyl epoxytalate, epoxidized polybutadiene, 3,4-dimethyl-1,2-epoxycyclohexane, 3,5-dimethyl-1,2, -Epoxycyclohexane, 3-methyl-5-t-butyl-1,2-epoxycyclohexane, octadecyl-2,2-dimethyl-3,4-epoxycyclohexylcarboxy N-butyl-2,2-dimethyl-3,4-epoxycyclohexyl carboxylate, cyclohexyl-2-methyl-3,4-epoxycyclohexyl carboxylate, N-butyl-2-isopropyl-3,4-epoxy -5-methylcyclohexyl carboxylate, octadecyl-3,4-epoxycyclohexylcarboxylate, 2-ethylhexyl-3 ', 4'-epoxycyclohexylcarboxylate, 4,6-dimethyl-2,3-epoxycyclohexyl-3', 4′-epoxycyclohexylcarboxylate, 4,5-epoxytetrahydrophthalic anhydride, 3-tert-butyl-4,5-epoxytetrahydrophthalic anhydride, diethyl 4,5-epoxy-cis-1,2-cyclohexyldicarboxylate Rate, j-n-b Le -3-t-butyl-4,5-epoxy - cis-1,2-cyclohexyl dicarboxylate, epoxidized soybean oil, can be preferably exemplified such as epoxidized linseed oil.
Epoxy compounds may be used alone or in combination of two or more.

  Of these, alicyclic epoxy compounds are preferably used, and 3,4-epoxycyclohexylmethyl-3 ', 4'-epoxycyclohexylcarboxylate is particularly preferable.

  The preferable content of the epoxy compound (F) is 0.0005 to 0.2 parts by mass with respect to 100 parts by mass of the polycarbonate resin (A), more preferably 0.001 parts by mass or more, and still more preferably 0.00. 003 parts by mass or more, particularly preferably 0.005 parts by mass or more, more preferably 0.15 parts by mass or less, still more preferably 0.1 parts by mass or less, and particularly preferably 0.05 parts by mass or less. When the content of the epoxy compound (F) is less than 0.0005 parts by mass, the hue and heat discoloration tend to be insufficient, and when it exceeds 0.2 parts by mass, the heat discoloration tends to deteriorate. Hue and wet heat stability tend to decrease.

[Additives, etc.]
The polycarbonate resin composition of the present invention includes other additives other than those described above, such as mold release agents, ultraviolet absorbers, fluorescent brighteners, pigments, dyes, polymers other than polycarbonate resins, flame retardants, and impact resistance. Additives such as improvers, antistatic agents, plasticizers, compatibilizers can be included. These additives may be used alone or in combination of two or more.
In addition, when other resin other than polycarbonate resin is contained, the content thereof is preferably 20 parts by mass or less, more preferably 10 parts by mass or less, more preferably 100 parts by mass of the polycarbonate resin component (A). Is preferably 5 parts by mass or less, particularly 3 parts by mass or less.

[Production Method of Polycarbonate Resin Composition]
There is no restriction | limiting in the manufacturing method of the polycarbonate resin composition of this invention, The manufacturing method of a well-known polycarbonate resin composition can be employ | adopted widely, and it mix | blends as needed a polycarbonate resin (A) and a polycarbonate copolymer (B). Other components are mixed in advance using various mixers such as tumblers and Henschel mixers, and then melt-kneaded with a mixer such as a Banbury mixer, roll, brabender, single-screw kneading extruder, twin-screw kneading extruder, or kneader. The method of doing is mentioned. The temperature for melt kneading is not particularly limited, but is usually in the range of 240 to 320 ° C.

  The polycarbonate resin composition of the present invention can produce various molded articles by molding pellets obtained by pelletizing the above-described polycarbonate resin composition by various molding methods. Further, the resin melt-kneaded by an extruder can be directly molded into a molded product without going through the pellets.

The polycarbonate resin composition of the present invention is a polycarbonate resin material that achieves both fluidity and strength at a higher level in a well-balanced manner. Therefore, various types of molded products, particularly optical components, especially thin optical components, can be obtained by injection molding. Is suitably used for molding. The resin temperature at the time of injection molding is preferably molded at a resin temperature higher than 260 to 300 ° C., which is a temperature generally applied to the injection molding of polycarbonate resin, particularly in the case of a thin molded product. A resin temperature of ˜380 ° C. is preferred. The resin temperature is more preferably 310 ° C or higher, further preferably 315 ° C or higher, particularly preferably 320 ° C or higher, and more preferably 370 ° C or lower. When the conventional polycarbonate resin composition is used, there is a problem that when the resin temperature at the time of molding is increased in order to mold a thin molded product, the molded product is likely to be yellowed. By using the composition, it becomes possible to produce a molded product having a good hue, particularly a thin-walled optical component, even in the above temperature range. In addition, reducing the molecular weight of the polycarbonate resin in order to form a thin molded product has been conventionally performed, but the polycarbonate resin composition of the present invention has good fluidity, so that it can be molded without reducing the molecular weight. Thus, a molded product having higher strength can be obtained.
The resin temperature is grasped as the barrel set temperature when it is difficult to directly measure the resin temperature.

  Here, the thin-walled molded article refers to a molded article having a plate-like portion with a thickness of usually 1 mm or less, preferably 0.8 mm or less, more preferably 0.6 mm or less. Here, the plate-like portion may be a flat plate or a curved plate, may be a flat surface, may have irregularities on the surface, and the cross section has an inclined surface. Or a wedge-shaped cross section.

Examples of the optical parts include parts of devices and instruments that directly or indirectly use light sources such as LEDs, organic EL, incandescent bulbs, fluorescent lamps, and cathode tubes.
The optical component using the polycarbonate resin composition of the present invention can be suitably used in the fields of liquid crystal backlight units, various display devices, and lighting devices. Examples of such devices include mobile phones, mobile notebooks, netbooks, slate PCs, tablet PCs, smartphones, tablet terminals, and other portable terminals, cameras, watches, notebook computers, various displays, lighting devices, and the like. It is done.

  Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not construed as being limited to the following examples.

The raw materials and evaluation methods used in the following examples and comparative examples are as follows.
In addition, the measuring method of the viscosity average molecular weight of polycarbonate resin is as having mentioned above.

The polycarbonate copolymer (B) was produced by the following production example.
<Example of production of polycarbonate copolymer (B)>
40 parts by mass of 1,1-bis (4-hydroxyphenyl) dodecane, 60 parts by mass of 2,2-bis (4-hydroxyphenyl) propane (ie, bisphenol A), 107 parts by mass of diphenyl carbonate, and cesium carbonate 2 as a catalyst A raw material mixture was prepared by adding a mass% aqueous solution so that cesium carbonate was 0.5 μmol per 1 mol of all dihydroxy compounds, and the mixture was adjusted to a first equipped with a stirrer, a heat medium jacket, a vacuum pump, and a reflux condenser. After putting into the reactor and replacing with nitrogen, the internal temperature of the first reactor was gradually raised through a heat medium having a temperature of 230 ° C. in the heat medium jacket to dissolve the mixture. Thereafter, the stirrer was rotated at 300 rpm, the internal temperature of the first reactor was kept at 220 ° C., and phenol produced as a by-product by the oligomerization reaction of the aromatic dihydroxy compound and diphenyl carbonate was distilled off over 40 minutes. The pressure in one reactor was reduced from 101.3 kPa (760 Torr) to 13.3 kPa (100 Torr) in absolute pressure.

Subsequently, the transesterification reaction was carried out for 80 minutes while maintaining the pressure in the first reactor at 13.3 kPa and further distilling off the phenol, and then the pressure in the first reactor was increased by restoring the pressure with nitrogen. After transferring the oligomer to a second reactor equipped with a stirrer having an internal temperature of 240 ° C., a heat medium jacket, a vacuum pump and a reflux condenser, the oligomer was stirred at 38 rpm, and the internal temperature was raised with the heat medium jacket. The pressure in the second reactor was reduced from 101.3 kPa to 13.3 kPa in absolute pressure over 40 minutes. Thereafter, the temperature increase was continued, and the internal pressure was reduced from 13.3 kPa to 399 Pa (3 Torr) as an absolute pressure over an additional 40 minutes, and phenol distilled out was removed out of the system. Further, the temperature was continuously raised, and after the absolute pressure in the second reactor reached 70 Pa (about 0.5 Torr), the pressure was maintained at 70 Pa, and a polycondensation reaction was performed. The final internal temperature in the second reactor was 255 ° C. When the stirrer of the second reactor has reached a predetermined predetermined stirring power, the polycondensation reaction is completed, the pressure inside the reactor is restored with nitrogen, pressure is applied, the pressure is withdrawn from the bottom, and the reactor is cooled with a water cooling bath. An aromatic polycarbonate copolymer was obtained. Thereafter, 5 ppm of butyl paratoluenesulfonate was blended with the obtained aromatic polycarbonate copolymer, melt-kneaded at 240 ° C. with a φ30 mm twin screw extruder, and the strand was cut with a pelletizer, and pelleted aromatic A polycarbonate copolymer was obtained.
The resulting polycarbonate copolymer (B) has 30 mol% of structural units derived from 1,1-bis (4-hydroxyphenyl) dodecane and 70 mol% of structural units derived from bisphenol A, and has a viscosity average molecular weight (Mv). Was 15000.

(Examples 1-5, Comparative Examples 1-5)
[Production of resin composition pellets]
Each component described in Table 1 above was blended in the proportions (parts by mass) described in Table 2 below, mixed for 20 minutes with a tumbler, and then a single screw extruder with a vent with a screw diameter of 40 mm (Tanabe Plastic Machinery Co., Ltd.). Manufactured by “VS-40”) at a cylinder temperature of 240 ° C., and pellets were obtained by strand cutting.

[Outflow per unit time: Q value (unit: × 10 ⁻² cm ³ / sec)]
After the pellets obtained by the above method are dried at 120 ° C. for 4 hours or longer, the composition of the composition is used under the conditions of a temperature of 240 ° C. and a load of 160 kgf / cm ² using an elevated flow tester according to JIS P8115. The flow rate per unit time (Q value, unit: × 10 ⁻² cm ³ / sec) was measured to evaluate the fluidity. An orifice having a diameter of 1 mm and a length of 10 mm was used.

[Measurement of Hue (YI)]
The obtained pellets were dried at 120 ° C. for 5 to 7 hours with a hot air circulating dryer, and then with an injection molding machine (“EC100SX-2A” manufactured by Toshiba Machine Co., Ltd.) at a resin temperature of 340 ° C. and a mold temperature of 80 ° C. A long optical path molded product (300 mm × 7 mm × 4 mm) was molded.
About this long optical path molded product, YI (yellowing degree) was measured at an optical path length of 300 mm. For the measurement, a long optical path spectral transmission color meter (“ASA 1” manufactured by Nippon Denshoku Industries Co., Ltd., C light source, 2 ° visual field) was used.

[Break test (measurement of maximum displacement point)]
The obtained pellets were dried at 120 ° C. for 5 to 7 hours with a hot-air circulating dryer, and then with an injection molding machine (“HSP100A” manufactured by Sodick) at a resin temperature of 360 ° C. and a mold temperature of 40 ° C. A molded product 1 having 61 mm × 112 mm × 0.45 mm thickness shown in FIG. As shown in FIG. 3, the parallel concave / convex pattern 2 provided on the back side of the molded product 1 has a distance from the concave portion to the convex portion of 0.014 mm, the base length of the convex portion is 0.05 mm, and the parallel concave / convex pattern 2. The angle of the concave and convex portions is 120 °.
The obtained molded product 1 was subjected to a cracking test under the following conditions using a bending test apparatus shown in FIG. That is, the molded product 1 is placed on the support bases 3 and 3 ′ provided in parallel with a depth of 1200 mm with the back surface 2 facing down, and the span d between the support bases 3 and 3 ′ is set to 3 mm. (Not shown). On the molded product 1, a knife-like edge 4 with a thickness of 3 mm, a tip angle of 30 °, and a tip portion of R0.14 mm rounded is installed above the center line of the support bases 3 and 3 ′. 4 was pushed down from the top of the molded product 1 in the downward direction of the center line of the span d at a speed of 10 mm / min, and the displacement until the molded product 1 was broken was determined to be the maximum displacement point (unit: mm).
The above evaluation results are shown in Table 2 below.

FIG. 1 is a graph showing the relationship between the Q value (fluidity) and the maximum displacement point (strength) of the above examples and comparative examples, where ◆ is an example and Δ is a comparative example.
From FIG. 1, it can be seen that all of the examples have a very good balance between fluidity and strength, but the comparative example has a poor balance.

  Since the polycarbonate resin composition of the present invention is a polycarbonate resin material that achieves both flowability and strength at a higher level in a well-balanced manner, it can be suitably used for various molded products, especially optical components, etc. Industrial applicability is very high.

Claims (18)

The carbonate structural unit represented by the following formula (2) and the carbonate structural unit represented by the following formula (3) with respect to 100 parts by mass of the polycarbonate resin (A) having the terminal structure represented by the following formula (1) A polycarbonate resin composition comprising 2 to 100 parts by mass of the polycarbonate copolymer (B) comprising (ii).
(In formula (1), n represents an integer of 0 or 1, and R represents an alkyl group having 5 to 14 carbon atoms.)
(In formula (2), R ¹ represents an alkyl group or alkenyl group having 8 to 24 carbon atoms, R ² and R ³ each independently represents a monovalent hydrocarbon group having 1 to 15 carbon atoms, And b each independently represents an integer of 0 to 4.)
  2. The polycarbonate resin composition according to claim 1, wherein R in the formula (1) is at least one selected from the group consisting of an n-octyl group, an iso-octyl group, and a t-octyl group.   The polycarbonate resin composition according to claim 1 or 2, wherein R in the formula (1) is a t-octyl group.   The proportion of the carbonate structural unit (i) is more than 10 mol% and less than 39 mol% with respect to a total of 100 mol% of the carbonate structural unit (i) and the carbonate structural unit (ii) in the polycarbonate copolymer (B). The polycarbonate resin composition according to any one of the above.   Furthermore, 0.005-0.5 mass part of phosphorus thermal stabilizer (C) and / or antioxidant (D) are contained with respect to 100 mass parts of polycarbonate resin (A). The polycarbonate resin composition described in 1.   The polycarbonate resin according to any one of claims 1 to 5, further comprising 0.1 to 4 parts by mass of a polyalkylene glycol (E) having a number average molecular weight of 500 to 5,000 with respect to 100 parts by mass of the polycarbonate resin (A). Composition.   Furthermore, the polycarbonate resin composition in any one of Claims 1-6 which contain 0.0005-0.2 mass part of epoxy compounds (F) with respect to 100 mass parts of polycarbonate resin (A). The polycarbonate resin composition according to any one of claims 1 to 7, wherein the polyalkylene glycol (E) is a polyalkylene glycol (E1) represented by the following formula (III-1).
(In formula (III-1), R represents an alkyl group having 1 to 3 carbon atoms, and X and Y are each independently a hydrogen atom, an aliphatic acyl group having 1 to 23 carbon atoms, or 1 to 23 carbon atoms. And an alkyl group having 6 to 22 carbon atoms or an aralkyl group having 7 to 23 carbon atoms, and m represents an integer of 10 to 400.) The polycarbonate resin composition according to any one of claims 1 to 7, wherein the polyalkylene glycol (E) is a polyalkylene glycol (E2) represented by the following general formula (III-2).
(In formula (III-2), X and Y are each independently a hydrogen atom, an aliphatic acyl group having 2 to 23 carbon atoms, an alkyl group having 1 to 23 carbon atoms, an aryl group having 6 to 22 carbon atoms, or A C7-23 aralkyl group is shown, m is an integer of 2-6, p shows the integer of 6-100.) A branched alkylene ether unit wherein the polyalkylene glycol (E) is selected from linear alkylene ether units represented by the following general formula (I) and units represented by the following general formulas (II-1) to (II-4) The polycarbonate resin composition according to claim 1, which is a polyalkylene glycol copolymer (E3) containing
(In formula (I), n is an integer of 3-6.)
(In formulas (II-1) to (II-4), R ^{1 to} R ¹⁰ represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and in each of formulas (II-1) to (II-4) At least one or more of R ^{1 to} R ¹⁰ is an alkyl group having 1 to 3 carbon atoms.)   The polycarbonate resin composition according to claim 10, wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a unit represented by the general formula (II-3).   The polycarbonate resin composition according to claim 11, wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a 3-methyltetramethylene ether unit.   The polycarbonate resin composition according to claim 10, wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a unit represented by the general formula (II-1).   The polycarbonate resin composition according to claim 13, wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a 2-methylethylene ether unit.   The polycarbonate resin composition according to claim 10, wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising a tetramethylene ether unit and a unit represented by the general formula (II-2).   The polycarbonate resin composition according to claim 15, wherein the polyalkylene glycol copolymer (E3) is a copolymer comprising tetramethylene ether units and 2,2-dimethyltrimethylene ether units.   The molded product which shape | molded the polycarbonate resin composition of any one of Claims 1-16.   The molded article according to claim 17, wherein the molded article is an optical component.