WO2007123071A1 - オレフィン系共重合体またはその変性物の水性エマルジョン - Google Patents
オレフィン系共重合体またはその変性物の水性エマルジョン Download PDFInfo
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- WO2007123071A1 WO2007123071A1 PCT/JP2007/058224 JP2007058224W WO2007123071A1 WO 2007123071 A1 WO2007123071 A1 WO 2007123071A1 JP 2007058224 W JP2007058224 W JP 2007058224W WO 2007123071 A1 WO2007123071 A1 WO 2007123071A1
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- olefin
- emulsion
- copolymer
- emulsifier
- olefin copolymer
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
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- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
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- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B23/08—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
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- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
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- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/06—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
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Definitions
- the present invention relates to an aqueous emulsion containing an olefin copolymer or a modified product thereof.
- an olefin-based copolymer modified product an olefin-based copolymer containing a structural unit derived from ⁇ -aged olefin and / or ethylene and a structural unit derived from a phenyl compound such as pinylcyclohexane is converted into an alkenyl aromatic carbonization.
- a modified olefin-based copolymer obtained by graft polymerization of hydrogen and carboxylic acid or unsaturated carboxylic acid is known, and it is disclosed that the modified product is excellent in adhesion to polypropylene which is difficult to adhere. (Patent Document 1).
- Patent Document 2 discloses that the aqueous emulsion has excellent moldability, heat resistance, solvent resistance, mechanical properties, and adhesiveness.
- Patent Document 1 Japanese Laid-Open Patent Publication No. 200 3-1 6 062 1 (
- Patent Document 2 Japanese Patent Application Laid-Open No. 2005-320400 ([00 07], [0064] to [0072]) Disclosure of Invention
- Aqueous emulsions containing olefin copolymers and their modified products are highly safe for the environment, and are applied to adhesives, paints, paint primers, printing binders, etc. in various fields such as automobiles and home appliances.
- the water emulsion does not have sufficient adhesion to difficult-to-adhere polyolefins such as polypropylene, and further application of the aqueous emulsion in these fields is not possible. There is a need for improvement.
- An object of the present invention is to provide an olefin-based copolymer-containing aqueous emulsion or an olefin-based copolymer-modified aqueous emulsion having further excellent adhesion.
- the present inventors have found that an aqueous emulsion having an olefin copolymer or a modified olefin copolymer having a median diameter in a certain range as a dispersoid is excellent in adhesiveness to polyolefin. . That is, the present invention provides the following [1] to [1 3].
- a modified olefin copolymer obtained by graft polymerization of an unsaturated carboxylic acid to the olefin copolymer obtained by graft polymerization of an unsaturated carboxylic acid to the olefin copolymer.
- R of the pinyl compound (I) represents a secondary alkyl group, a tertiary alkyl group, or an alicyclic hydrocarbon group.
- the emulsifier is a water-soluble acrylic resin containing structural units derived from a, j3-unsaturated carboxylic acid, acrylic acid vinyl ester, and (meth) acrylic acid ester. Yemarjiyon.
- An olefin copolymer and an emulsifier containing at least one member selected from the group consisting of ethylene and linear leucine and a structural unit derived from the pinyl compound (I), or the olefin A method for producing an emulsion in which an olefin copolymer modified product obtained by dull polymerization of an unsaturated carboxylic acid with a copolymer is mixed with an emulsifier while applying a shear stress and then dispersed in water.
- An adherend composed of at least one material selected from the group consisting of a woody material, a cellulosic material, a plastic material, a ceramic material, and a metal material, and any one of [1] to [5] A laminate having an adhesive layer derived from the emulsion.
- An adherend comprising at least one material selected from the group consisting of a woody material, a cellulosic material, a plastic material other than polyolefin, a ceramic material, and a metal material, [1] to [5] A three-layer laminate comprising an adhesive layer obtained from any one of the emulsions described above and an adherend comprising polyolefin in this order.
- the olefin-based copolymer used in the present invention is derived from a structural unit derived from ethylene, linear linear olefin, or ethylene and linear ⁇ -olefin, and the following vinyl compound (I).
- An olefin-based copolymer containing structural units is there.
- R of the vinyl compound (I) represents a secondary alkyl group, a tertiary alkyl group or an alicyclic hydrocarbon group.
- the olefinic copolymer a modified olefin-based copolymer used in the present invention (hereinafter referred to as “the olefinic copolymer”)
- the modified product may be obtained by graft polymerization of an unsaturated carboxylic acid to the olefin copolymer.
- the structural unit contained in the modified product includes a structural unit derived from ethylene, linear 0! -Olefin, or a structural unit derived from ethylene and linear ⁇ -olefin, and a vinyl compound (I). At least a unit and a structural unit derived from unsaturated carboxylic acids.
- R is a secondary alkyl group, a tertiary alkyl group or an alicyclic hydrocarbon group.
- the secondary alkyl group is preferably a secondary alkyl group having 3 to 20 carbon atoms
- the tertiary alkyl group is preferably a tertiary alkyl group having 4 to 20 carbon atoms
- the alicyclic hydrocarbon group is preferred.
- An alicyclic hydrocarbon group having 3 to 16 membered rings is more preferable.
- the substituent R is preferably a 3 to 20 carbon alicyclic hydrocarbon group having a 3 to 10 membered ring or a tertiary alkyl group having 4 to 20 carbon atoms.
- Examples of vinyl compounds (I) in which the substituent R is a tertiary alkyl group include 3, 3-dimethyl-1-butene, 3,3-dimethyl-1-one-pentene, 3,3-dimethyl-1-one hexene, 3, 3 —Dimethyl-11-heptene, 3,3-dimethyl-1-octene, 3, 3, 4--trimethyl-1-pentene, 3,3,4-trimethyl-1-hexene, 3,3,4-trimethyl-1-heptene 3, 3, 4—Trimethyl 1-octene.
- Examples of the vinyl compound (I) in which the substituent R is an alicyclic hydrocarbon group include the substituent R such as vinylcyclopropane, pinylcyclobutane, pinylcyclopentane, vinylcyclohexane, vinylcycloheptane, and pinylcyclooctane.
- R such as vinylcyclopropane, pinylcyclobutane, pinylcyclopentane, vinylcyclohexane, vinylcycloheptane, and pinylcyclooctane.
- a vinyl compound in which is an alkyl group; a vinyl compound in which R is a cycloalkenyl group, such as 5-vinyl-2-norbornene, 4-vinyl-1-cyclohexene; 1-vinyladamantane, etc. can give.
- Preferred biel compounds (I) are 3-methyl-1-butene, 3-methyl-1 monopentene, 3-methyl-1-hexene, 3,4-dimethyl-1-pentene, 3,5-dimethyl-1-hexene, 3,4,4-trimethyl-1-pentene, 3,3-dimethyl-1-butene, 3,3-1dimethyl-1-pentene, 3,3,4trimethyl-1-pentene , Pinylcyclopentane, pinylcyclohexane, vinylcycloheptane, pinylcyclooctane, 5-vinyl-2-norbornene.
- pinyl compounds (I) are 3-methyl-1-butene, 3-methyl-1-pentene, 3,4-dimethyl-1-pentene, 3,3-dimethyl-1-butene, 3,3,4-trimethyl. Penten, bicyclohexane, and pinylnorbornene. More preferred vinyl compounds (I) are 3,3-dimethyl-1-butene and vinylcyclohexane. The most preferred pinyl compound (I) is vinylcyclohexane.
- the content of the monomer unit of the vinyl compound (I) is based on 100 mol% of all the monomer units constituting the olefin-based copolymer. Usually, it is 5 to 40 mol%, preferably 10 to 30 mol%, more preferably 10 to 20 mol%.
- the adhesive property of the resulting adhesive tends to be improved, which is preferable.
- the content of the monomer unit of the pinyl compound (I) can be determined using a 1 H-NMR spectrum or a 13 C-NMR spectrum.
- the linear ⁇ -olefin used in the present invention is usually a linear ⁇ -year-old refin having 3 to 20 carbon atoms, specifically, propylene, 1-butene, 1-pentene, 1- Xene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-tridecene, 1-tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1 nanodecene, 1-eicosene and the like.
- the total content of the structural units derived from ethylene and the structural units derived from linear ⁇ -year-old olefins is the total content of the olefin-based copolymers.
- the amount is usually 95 to 60 mol%, preferably 90 to 70 mol%, more preferably 90 to 80 mol% with respect to 100 mol% of the monomer unit.
- the olefin-based copolymer used in the present invention is a copolymer of ethylene, a linear ⁇ -olefin, or a structural unit derived from ethylene and a linear ⁇ -olefin, and a phenyl compound (I). In addition, it may be obtained by copolymerizing a monomer capable of addition polymerization.
- the addition-polymerizable monomer is a monomer other than ethylene, linear ferrofine, and Bier compound (I), and includes ethylene, linear ferrone and pieric compound. It is a monomer capable of addition polymerization with (I), and the carbon number of the monomer is usually about 3 to 20.
- Specific examples of addition-polymerizable monomers include cycloolefin, the following general formula (
- R ′ and R ′′ each independently represents a linear, branched or cyclic alkyl group having about 1 to 18 carbon atoms, or a halogen atom.
- cycloolefin examples include cyclobutene, cyclopentene, cyclohexene, cyclooctene, 3-methylcyclopentene, 4-methylcyclopentene, 3-methylcyclohexene, 2-norbornene, 5-methyl-2-norbornene, 5-ethyl-2 — Norponene, 5-Petitrou 2—Norporene, 5—Phenol, 2—Norporen, 5—Benzyl-2-norporene, 2-tetracyclododecene, 2-Tricyclodecene, 2-Tricycloundecene Lu—2-Tetracyclo Dodecene, 8-ethyl-2-tetracyclododecene, 5 1-acetylyl 2-norporene
- the more preferred talisman refins are cyclopentene, cyclohexene, cyclooctene, 2-norbornene, 5-methyl-2-norbornene, 5-phenyl-2-norbornene, 2-tetracyclododecene, 2-tricyclodecene, 2-tricyclodecene.
- Cycloundecene 2 —Pencyclopentadecene, 2-Pentacyclohexadecene, 5-7 Cetyl 2 —Norbornene, 5—Acetyloxy— 2 —Norbornene, 5—Methoxycarbonyl 2-norbornene, 5 —Methyl-5 —Me Toxoxycarbonyl — 2-norporene, 5-cyanol 2-norporene, particularly preferably
- vinylidene compounds include isobutene, 2-methyl-1-butene, 2-methyl-1-pentene, 2-methyl-1-hexene, 2-methyl-1-heptene, 2-methyl-1-octene, 2,3 dimethyl-1-butene, 2,
- 3 Dimethyl-1 monopentene, 2, 3 —Dimethyl-1 monohexene, 2, 3—Dimethyl-1 monoheptene, 2, 3-dimethyl-1-octene, 2, 4-dimethyl-1 monopentene, 2, 4, 4—
- Examples include trimethyl-1-pentene and pinylidene chloride.
- Particularly preferred vinylidene compounds are isobutene, 2,3-dimethyl-1-butene, 2,4,4_ ⁇ -methyl-1-pentene.
- Gen compounds include, for example, 1,3-butadiene, 1,4-one pentagen, 1,5-one hexagen, 1,6-one heptagene, 1,7-octagen, 1,5-cyclooctadiene, 2,5-norporogen, dicyclopentene, 5-vinyl-2-norbornene, 5-aryl-1-norbornene, 4-pinyl-1-cyclohexene, 5-ethylidene 2 —Norpornene and the like.
- Particularly preferred gen compounds are 1,4-pentagen, 1,5-hexadiene, 2,5-norporagene, dicyclopentagen, 5-vinyl-2-norporene, 4-pinyl-1-cyclohexene, 5-ethylidene 2 —Nor Pornen.
- alkyl acid pinyl include pinyl acetate, pinyl propionate, and pinyl butyrate.
- pinyl ethers include methyl vinyl ether, ethynpinyl ether, and n-butyl vinyl ether.
- halogenated pinyl examples include phenyl chloride, and examples of the acrylonitrile include acrylonitrile and methacrylonitrile.
- the content of the monomer unit capable of addition polymerization in the olefin copolymer is usually in a range where the adhesiveness of the resulting modified olefin copolymer is not impaired.
- the amount of addition-polymerizable monomer units is usually about 5 mol% or less, preferably 1 mol% or less, with respect to 100 mol% of all monomer units constituting the olefin copolymer. It is more preferable not to contain substantially.
- Examples of the method for producing the olefin-based copolymer used in the present invention include the presence of a catalyst containing a transition metal compound having a group having an indenyl-type anion skeleton or a bridged cyclopentadiene-type anion skeleton.
- a catalyst containing a transition metal compound having a group having an indenyl-type anion skeleton or a bridged cyclopentadiene-type anion skeleton are examples of the method for producing the olefin-based copolymer used in the present invention.
- an ethylene homopolymer or a pinylcyclohexane homopolymer is by-produced in addition to the copolymer used in the present invention, depending on the type of catalyst used and the polymerization conditions.
- the copolymer used in the present invention can be easily separated by performing solvent extraction using a Soxhlet extractor or the like.
- a homopolymer of pinylcyclohexane can be removed as an insoluble component of extraction using toluene
- polyolefin such as polyethylene can be removed as an insoluble component of extraction using black mouth form.
- the copolymer used can be fractionated as a soluble component of both solvents.
- the olefin-based copolymer may be used in the presence of such a by-product if there is no problem depending on the application.
- the molecular weight distribution of the olefin-based copolymer is preferably 1.5 or more and 10.0 or less because the mechanical strength and transparency of the resulting modified olefin-based copolymer tend to be improved. From the viewpoint of mechanical strength, the weight-average molecular weight of the olefin copolymer (
- Mw is usually about 5,000 to 1,000,000, preferably about 10,000 to 500,000, and more preferably about 15,000 to 400,000.
- the weight average molecular weight of the olefin copolymer is 5,000 or more, it is preferable because the mechanical strength of the modified olefin copolymer is improved, and it is 1,000,000 or less. It is preferable because the fluidity of the olefin-based copolymer tends to be improved.
- the value of the limiting viscosity [77] is usually about 0.25 to about 10 dl Zg, preferably 0.3 from the viewpoint of mechanical strength. ⁇ About 3 d 1 Z g.
- the dispersoid is the above-mentioned olefin-based copolymer, and the olefin-based copolymer is an aqueous emulsion dispersed together with an emulsifier, or the dispersoid is added to the olefin-based copolymer as an unsaturated carboxylic acid.
- This is a modified olefin copolymer obtained by graft polymerization (hereinafter sometimes referred to simply as a modified product), and is an aqueous emulsion in which the modified product is dispersed together with an emulsifier.
- the dispersoid is a modified material because of excellent adhesiveness.
- the graft polymerization amount of unsaturated carboxylic acids to the modified product is usually about 0.01 to 20% by weight, preferably 0.05 to 10% by weight, with respect to 100% by weight of the resulting modified product. About 0.1 to 5% by weight.
- the graft polymerization amount of unsaturated carboxylic acids is preferably not less than 0.01% by weight because the adhesive strength of the modified substance tends to be improved, and if it is not more than 20% by weight, the modification This is preferable because the thermal stability of the product tends to be improved.
- Unsaturated carboxylic acids include, for example, acrylic acid, methacrylic acid, crotonic acid, isocrotonic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, nadic acid, methyl nadic acid, hymic acid, angelic acid, tetrahydrophthal Unsaturated carboxylic acids such as acid, sorbic acid and mesaconic acid; unsaturated carboxylic acid anhydrides such as maleic anhydride, itaconic anhydride, citraconic anhydride, nadic anhydride, methyl nadic anhydride, and hymic anhydride; methyl acrylate , Methyl methacrylate, Ethyl acrylate, Ethyl methacrylate, 1-n-butyl acrylate, 1-butyl methacrylate, 1-butyl acrylate, 1-butyl methacrylate, Glycidyl acrylate, Glycidyl
- Unsaturation of Unsaturated carboxylic acid halides such as maleic chloride, unsaturated carboxylic acid halides; Examples thereof include a metal salt of boronic acid. Further, the above unsaturated carboxylic acids may be used in combination.
- maleic anhydride is preferable.
- a method for producing the modified product for example, a method in which an olefin copolymer is melted and then an unsaturated carboxylic acid is added to perform graft polymerization, or the olefin copolymer is dissolved in a solvent such as toluene or xylene. After that, there is a method of adding an unsaturated carboxylic acid and graft polymerization.
- the unsaturated carboxylic acids are added and graft polymerized by melt-kneading using an extruder. It is preferable because various known methods for mixing can be employed. Further preferred examples include a method in which all or some of the components are combined and mixed separately with a Henschel mixer, a Ripon blender, a blender, etc. to obtain a uniform mixture, and then the mixture is melt-kneaded. Can be mentioned.
- melt-kneading means conventionally known kneading means such as Banbury mixer, plast mill, Brabender plastograph, uniaxial or biaxial extruder can be widely used.
- a olefin-based copolymer, unsaturated carboxylic acid, radical start which is sufficiently premixed in advance using a single-screw or twin-screw extruder is used.
- a method in which the agent is supplied from the supply port of the extruder and kneaded is recommended.
- the temperature of the part where the melt kneading of the extruder is carried out (for example, the cylinder temperature in the case of an extruder) is usually from 50 to 300, preferably from 80 to 2700.
- the temperature of the melt kneading part of the extruder is preferably set so that the melt kneading is divided into two stages, the first half and the second half, and the temperature in the second half is higher than the first half.
- the melt kneading time is usually from 0.1 to 30 minutes, particularly preferably from 0.1 to 5 minutes.
- melt-kneading time is 0.1 minutes or more, the graft amount tends to be improved, and if the melt-kneading time is 30 minutes or less, the decomposition of the olefin-based copolymer tends to be suppressed. preferable.
- polymerization is usually carried out in the presence of a radical initiator.
- the addition amount of the radical initiator is usually from 0.01 to 10 parts by weight, preferably from 0.01 to 1 part by weight, based on 100 parts by weight of the olefin polymer.
- the amount added is preferably not less than 0.01 parts by weight because the amount of grafting to the olefin polymer tends to increase and the adhesion strength tends to improve, and the amount added is not more than 10 parts by weight. It is preferable because unreacted radical initiator in the resulting modified product is reduced and the adhesive strength tends to be improved.
- the radical initiator is an organic peroxide, and preferably an organic peroxide having a decomposition temperature of 50 to 20 ° C. with a half-life of 1 minute.
- a decomposition temperature of 50 ° C. or higher is preferable because the graft amount tends to be improved, and a decomposition temperature of 2 10 t or lower is preferable because decomposition of the olefin-based polymer tends to be reduced.
- These organic peroxides preferably have an action of extracting protons from the polypropylene resin after decomposition to generate radicals.
- Organic peroxides with a half-life of 1 minute and a decomposition temperature of 50 ° C to 10 ° C include diacyl peroxide compounds, dialkyl peroxide compounds, hydroxy ketal compounds, alkyl perester compounds, percaponate compounds, etc. Can be given.
- dicedel peroxydicarbonate di-3-methoxybutyl peroxydicarbonate, di-2-ethylhexyl peroxydicarboxylate, bis (4 tert-butyl cyclohexane) Xyl) peroxydicarbonate, diisopropyl peroxydicarbonate, t-butyl peroxyisopropyl carbonate, dimyristyl peroxycarbonate, 1,1,3,3-tetramethylbutyl neodecanoate, ⁇ -cumyl peroxyneodecanoate ⁇ , tert-butyl peroxy neodecano ⁇ , 1, 1 bis (t-butylperoxy) cyclohexane, 2, 2 bis (4, 4-di-t-butylperoxycyclohexyl) propane, 1, 1-bis ( t-Butylperoxy) cyclododecane, t-hexylparoxyisopropyl
- the graft amount tends not to improve, and if the decomposition temperature is higher than 21 O, the graft amount tends not to improve.
- these organic peroxides are preferably dialkyl peroxide compounds, diacyl peroxide compounds, percaponate compounds, and alkyl perester compounds.
- the modified products used in the present invention usually have a molecular weight distribution (MwZMn). 1.5 to 10, preferably 1.5 to 7, and more preferably 1.5 to 5 or less. A molecular weight distribution of 10 or less is preferred because the adhesiveness of the modified product tends to be improved.
- the molecular weight distribution of the modified product can be measured in the same manner as the molecular weight distribution of the olefin-based copolymer.
- the modified product used in the present invention usually has a value of intrinsic viscosity [??] of about 0.25 to about L 0 d 1 Zg, preferably 0.3 to 3 dl. It is about Zg.
- the emulsion of the present invention is an emulsion in which the olefin-based copolymer thus obtained or a modified product thereof is dispersed in water together with an emulsifier as a dispersoid, and the volume-based median diameter of the dispersoid is from 0.001 to l zm.
- polyoxyethylene polyoxypropylene block copolymer polyoxyethylene polyoxypropyl alkyl ether, These mixtures are preferred because they tend to be excellent in emulsion stability.
- a water-soluble acrylic resin is preferably used as the emulsifier.
- the water-soluble acrylic resin is an aqueous solution containing a resin containing a structural unit derived from / 3—unsaturated carboxylic acid, and the aqueous solution usually has the resin uniformly dissolved therein.
- the monomer constituting the resin include acrylic acid, methacrylic acid, maleic acid, maleic anhydride, succinic acid, itaconic acid, and the like, ⁇ -unsaturated carboxylic acid having 3 to 8 carbon atoms;
- Halogenated pinyls such as biel chloride and pinyl bromide
- Vinylidene halides such as vinylidene chloride
- Pinyl compounds such as vinylphosphonic acid, pinylsulfonic acid, and salts thereof; aromatic pinyls such as styrene, ⁇ -methylstyrene, and chlorostyrene;
- Nitriles such as (meth) acrylonitrile
- Acrylamides such as ⁇ -methylolacrylamide and ⁇ -butoxymethylacrylamide
- Conjugates such as butadiene and isoprene
- Examples include aryl compounds such as allylic sulfonate, diallyl phthalate, 1, realyl cyanurate and triallyl isocyanurate.
- the water-soluble acrylic resin preferably contains a structural unit derived from each of ⁇ , / 3-unsaturated carboxylic acid, vinyl acrylate, and (meth) acrylate, and particularly constitutes the resin. 10 to 90 mol% of structural units derived from monomers, 10 to 90 mol% of structural units derived from i3-unsaturated carboxylic acid, and 5 to 6 structural units derived from acrylic acid pinyl ester 0 mol%, (meth) It is preferable to contain 5 to 85 mol% of structural units derived from an acrylate ester.
- a water-soluble acrylic resin, polyoxyethylene polyoxypropylene block copolymer, and polyoxyethylene polyalkyl ether may be used in combination.
- the method for producing the emulsion of the present invention include, for example, a method in which an olefin copolymer or a modified olefin copolymer and an emulsifier are kneaded while applying a shearing stress and then dispersed in water; There is a method in which the polymer or olefin-based copolymer modified product is dissolved in an organic solvent such as toluene, the emulsifier and the emulsifier are mixed while applying shear stress, and then dispersed in water, and then the organic solvent is removed. Can be mentioned.
- the shear rate at the time of applying the shear stress is usually 1 to 3 0 00 0 seconds—about 1 for 45 seconds, preferably 1 to 100 seconds to 1 to 100 seconds. — About 1 It is preferable that the shear rate is 4500 seconds— 1 or more, because the adhesion of the resulting emulsion tends to be improved, and if it is 300 ° seconds— 1 or less, it is easy to produce industrially. It is preferable because it tends to become.
- the shear rate refers to the peripheral speed [mm / s ec] at the outermost periphery of the screw element. This is the value divided by the clearance [IM1] between the chest and barrel.
- devices that apply shear stress include multi-screw extruders such as twin-screw extruders, Laboplast Mill (Toyo Seiki Seisakusho Co., Ltd.), Laboplast Mill Micro (Toyo Seiki Seisakusho Co., Ltd.), homogenizers, and T.K Fill. Examples include equipment with a barrel (cylinder) such as Mix (Blymix Co., Ltd.). Taking a multi-screw extruder as an example, a specific method for producing an emulsion will be described.
- An olefin copolymer modified product is supplied from a hopper of a multi-screw extruder having two or more screws in a casing.
- Examples thereof include a method of heating, melt-kneading, kneading with at least one liquid supply port provided in the compression zone and / or measuring zone of the extruder, and then dispersing in water.
- Examples of methods for producing emulsions using equipment that does not have barrels (cylinders) include, for example, stirring tanks, chemical stirrers, portex mixers, flow jet mixers, colloid mills, ultrasonic generators, high-pressure homogenizers, and dispersion Fujikin), a mechanical emulsification method using a static mixer, a micromixer and the like.
- the emulsion production method by a chemical emulsification method such as self-emulsification may be mentioned, but a mechanical emulsification method is preferred.
- a mechanical emulsification method is preferred.
- the method for producing the emulsion of the present invention since the modified olefin copolymer and the emulsifier are kneaded while applying a shear stress, and then dispersed in water, the desired median diameter described later can be easily obtained.
- the twin-screw extruder and the multi-screw extruder are preferable because they can process a high-viscosity modified product, and among them, the twin-screw extruder is particularly preferable.
- the volume-based median diameter of the dispersoid is 0.11 to lzm, preferably 0.2 to Q0.55 m, and more preferably 0.4 to 0.55 m.
- a volume-based median diameter of 0.01 m or more is preferable from the viewpoint of easy production, and a volume-based median diameter of 1 Atm or less is preferable because adhesion tends to improve.
- emulsions of the present invention include aqueous emulsions such as aqueous polyurethane emulsions and polyethylene-vinyl acetate copolymer aqueous emulsions, thermosetting resins such as urea resins, melamine resins and phenolic resins, clays, kaolin and talc.
- Fillers such as calcium carbonate, preservatives, antifungal agents, antifoaming agents, foaming agents, polyacrylic acid, polyether, methylcellulose, strong carboxymethylcellulose, polyvinyl alcohol, starch and other thickeners, Viscosity modifiers, flame retardants, pigments such as titanium oxide, high-boiling solvents such as dibasic acid dimethyl succinate and dimethyl adipate, and plasticizers may be added.
- a silicon-based additive such as polyether-reactive polydimethylsiloxane or an acetylene glycol-based surfactant.
- the amount used is usually 1 to 100 parts by weight of the solid content of the emulsion. About 500 parts by weight, preferably about 5 to 200 parts by weight.
- Examples of the adherend bonded to the adhesive layer obtained from the aqueous emulsion of the present invention include wood-based materials such as wood, plywood, medium density fiberboard (MDF), particle rod, and oriented strand pad; wallpaper Paper-based materials such as wrapping paper: Cellulosic materials such as cotton cloth, linen, and rayon; polyethylene (polyolefins mainly composed of structural units derived from ethylene; the same shall apply hereinafter), polypropylene (mainly structural units derived from propylene) Polyolefins as ingredients, the same shall apply hereinafter) Polyolefins such as polystyrene; Polycarbonate, acrylonitrile knob / styrene copolymer (ABS resin), (meth) acrylic resin polyester, polyether, polyvinyl chloride, polyurethane, etc.
- wood-based materials such as wood, plywood, medium density fiberboard (MDF), particle rod, and oriented strand pad
- wallpaper Paper-based materials such as wrapping paper: Cellulo
- Such an adherend may be a composite material composed of a plurality of materials. Further, it may be an inorganic filler such as talc, silica, activated carbon, or a kneaded molded product of carbon fiber and a plastic material.
- a water-absorbent adherend such as a wood-based material, a paper-based material, or a cellulose-based material
- the aqueous emulsion of the present invention is used as it is as an adhesive, and the other adherend Can be pasted together.
- another substrate (which may be water-absorbing or non-water-absorbing) may be laminated on the layer obtained from the water-based emulsion.
- the contained moisture is absorbed by the water-absorbent adherend, and the layer obtained from the aqueous emulsion becomes an adhesive layer, whereby a laminate having the water-absorbent adherend Z adhesive layer Z adherend can be obtained.
- the water-based emulsion of the present invention is provided on one side of the adherend.
- the adhesive layer derived from the aqueous emulsion of the present invention has excellent adhesion to an adherend of polyolefin such as polypropylene, which has been considered to be hardly adhesive, and at the same time, the adhesive layer is also an adherend of polyurethane.
- a chlorine-based polyolefin is used as an adhesive layer.
- the adhesive layer obtained from the aqueous emulsion does not contain chlorine, and only the adhesive layer is excellent in adhesion to both the polyolefin adherend and the polyurethane adherend.
- a laminate in which the polyurethane adherend is foamed polyurethane is suitable for automobile interior and exterior use.
- polyurethane is a polymer that is crosslinked by urethane bonds.
- the foamed polyurethane as shown in the examples is a polyurethane foamed by a volatile solvent such as carbon dioxide or freon produced by the reaction of isocyanate and water used as a crosslinking agent.
- Semi-rigid polyurethane is used for automobile interiors, and rigid polyurethane is used for paint.
- ABS resin poly (ethylene terephthalate), poly (pinyl chloride), (meth) acrylic resin, glass, aluminum, polyurethane and the like are preferable, and polypropylene, polyvinyl chloride, glass, aluminum and polyurethane are more preferable.
- the aqueous emulsion of the present invention can be used as a paint or a primer.
- it can be suitably used for a coating or primer applied to polypropylene which has been conventionally referred to as a hardly adhesive material.
- the emulsion of the present invention provides an adhesive layer (film) that is highly safe to the environment and excellent in adhesiveness, and the formed adhesive layer (film) has formability, heat resistance, solvent resistance, mechanical properties. Because of its excellent properties, it can be suitably used as an adhesive, paint, coating primer, paint or printing binder.
- the solid content was measured by a measuring method according to JIS K-6828.
- the viscosity is a value measured with a Brookfield viscometer (manufactured by Toki Sangyo Co., Ltd.) at 25 ° C.
- the intrinsic viscosity [] was measured at 1 35 ° C using an Ubbelohde viscometer and tetralin as a solvent.
- the molecular weight of the olefin copolymer and the modified olefin copolymer was calibrated with polystyrene (molecular weight 688 to 400,000) standard substance using gel permeation chromatography (GPC). Above, obtained under the following conditions.
- the molecular weight distribution was evaluated by the ratio (Mw / Mn) between the weight average molecular weight (hereinafter referred to as Mw) and the number average molecular weight (hereinafter referred to as Mn).
- the grafting amount of maleic anhydride is as follows: 1.0 g of sample is dissolved in xylene 2 Om 1 and the sample solution is added dropwise to 30 Om 1 with stirring to re-sample the sample. After collecting by precipitation, the collected sample is vacuum-dried (80 ° C, 8 hours), then a film with a thickness of 100 m is produced by hot pressing, and the resulting film has an infrared absorption spectrum. The amount of maleic acid graft was quantified from the absorption around 1780 cm- 1 .
- VCH pinylcyclohexane
- 3640 parts of toluene were charged into a reactor made of SUS substituted with argon. After raising the temperature to 50 ° C, ethylene was charged at 0.6 MPa.
- a solution dissolved in 7 parts and a solution prepared by dissolving 0.03 part of dimethylanilintetrakis (Penyu fluorophenyl) porate in 122 parts of dehydrated toluene were added and stirred for 2 hours.
- the obtained reaction solution was poured into about 10,000 parts of acetone, and the precipitated white solid was collected by filtration.
- Block polypropylene / ethylene propylene rubber (EPR) Z talc 60/20/20 (weight ratio) kneaded, then injection molded in 220, 15 cmX 5cmX 3mm plate (hereinafter referred to as composite PP plate) There is) After removing dust, etc. from the composite PP plate with pure water, and further washing with acetone, the emulsion obtained on the composite PP plate is 1 mm thick so that the film thickness after drying is 10 im. This was cast and applied using a molding frame. This was dried in a thermostatic chamber (23 ° C, 50 R.H) for 3 days, and then heated in an oven at 120 ° C for 1 minute to obtain a coating.
- a thermostatic chamber 23 ° C, 50 R.H
- the obtained film was cut according to JIS—K 5400 (cross-cut peeling tape method test) with a grid-like cut with a clearance of 5 mm, and then a cellophane tape was applied to the paint film. Next, one to two minutes after the cellophane tape was applied, one end of the tape was held and peeled off at a right angle to evaluate adhesion.
- Example 1 the intersection of the cuts and the square did not peel at a glance, whereas in Comparative Example 1, the peeled area was 65% or more of the square area.
- the composite PP washed with pure water and air blow was diluted about 5 times with emulsion prepared in the same manner as in Example 1 (volume-based median diameter of dispersoid: 0.58 m, solid content: 43% by weight).
- an air spray gun Iwata coating machine, Wider 1 type 60, 1 ⁇ nozzle diameter, hold cup No. 4
- the laminate was dried for 10 minutes in a ventilated oven set at 80 to obtain a two-layer laminate (Example) having an adhesive layer derived from the composite PPZ aqueous emulsion.
- Polyetherpolyol (MHR Takei Chemical Co., Ltd. MHR— 2 1 9 7) 100 weight and isocyanate (LDP— 00 9 manufactured by Mitsui Takeda Chemical Co., Ltd.) were mixed at room temperature with a homomixer (Special Machine Industries) A polyurethane foam stock solution was prepared by mixing for 6 seconds with a homomixer model M).
- the three-layer laminate having composite PP / water-based emulsion / adhesive layer / polyurethane was taken out of the mold, and allowed to stand at room temperature all day and night.
- Pulled composite PP (adhered body) and urethane foam (adhered body) of three-layer laminate were taken out of the mold, and allowed to stand at room temperature all day and night.
- Pulled composite PP (adhered body) and urethane foam (adhered body) of three-layer laminate However, although the foamed urethane broke, the interface of the adhesive layer did not peel off.
- the two-layer laminate (comparative example) having (composite PP / polyurethane) was taken out of the mold and allowed to stand at room temperature all day and night.
- composite PP adherered body
- foamed urethane adherered body
- Example 2 After degreasing treatment of the adherends listed in Table 1 with ethanol, the aqueous emulsion used in Example 2 was applied with a bar coater and dried in an oven at 80 ° C. for 40 minutes. An adhesive layer derived from an aqueous emulsion having a thickness of 10 was obtained. Next, the adhesive tape was attached to the adhesive tape, and the adhesive tape was peeled off at 180 °, 50 ° Z for 180 °, using a precision universal testing machine Autograph (Shimadzu AG—50 kN). Carried out. Table 1 shows the measured maximum peel strength. In both cases, peeling between the gamut tape and the adhesive layer was not observed, and no peeling between the substrate and the adhesive layer was observed. table 1
- Example 14 is the same as Example 1 except that ⁇ Production example of olefin copolymer> was used in place of the modified product obtained in Production example of modified olefin copolymer>. It carried out similarly. Table 2
- ⁇ The area of peeling is less than 15% of the square area.
- the peeled area is 15% or more of the square area (Comparative Example 3 is 35%).
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Abstract
Description
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US12/296,285 US20090186232A1 (en) | 2006-04-21 | 2007-04-10 | Aqueous emulsion of olefin copolymer or modified material thereof |
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Cited By (4)
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WO2008072760A1 (ja) * | 2006-12-15 | 2008-06-19 | Sumika Chemtex Company, Limited | オレフィン系共重合体の水性エマルジョン |
JP2010001470A (ja) * | 2008-05-23 | 2010-01-07 | Sumitomo Chemical Co Ltd | 共重合体含有水性エマルション及びその製造法 |
WO2011002047A1 (ja) * | 2009-06-30 | 2011-01-06 | 住友化学株式会社 | 積層体 |
US9909020B2 (en) | 2005-01-21 | 2018-03-06 | The Boeing Company | Activation method using modifying agent |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US8557343B2 (en) | 2004-03-19 | 2013-10-15 | The Boeing Company | Activation method |
TW201016773A (en) * | 2008-09-12 | 2010-05-01 | Sumitomo Chemical Co | Aqueous emulsion |
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- 2007-04-10 WO PCT/JP2007/058224 patent/WO2007123071A1/ja active Application Filing
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US9909020B2 (en) | 2005-01-21 | 2018-03-06 | The Boeing Company | Activation method using modifying agent |
US10888896B2 (en) | 2005-01-21 | 2021-01-12 | The Boeing Company | Activation method using modifying agent |
WO2008072760A1 (ja) * | 2006-12-15 | 2008-06-19 | Sumika Chemtex Company, Limited | オレフィン系共重合体の水性エマルジョン |
JP2010001470A (ja) * | 2008-05-23 | 2010-01-07 | Sumitomo Chemical Co Ltd | 共重合体含有水性エマルション及びその製造法 |
EP2284211A1 (en) * | 2008-05-23 | 2011-02-16 | Sumitomo Chemical Company, Limited | Aqueous emulsion containing a-olefin/(meth)acrylate copolymer and method for manufacturing the same |
EP2284211A4 (en) * | 2008-05-23 | 2011-11-16 | Sumitomo Chemical Co | AQUEOUS EMULSION CONTAINING A-OLEFIN / ACIDIC ACID ESTER COPOLYMER |
WO2011002047A1 (ja) * | 2009-06-30 | 2011-01-06 | 住友化学株式会社 | 積層体 |
Also Published As
Publication number | Publication date |
---|---|
KR20090006121A (ko) | 2009-01-14 |
EP2014719A1 (en) | 2009-01-14 |
US20090186232A1 (en) | 2009-07-23 |
EP2014719A4 (en) | 2009-08-19 |
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