JPH0420217A - Vinyl chloride based resin film for agriculture - Google Patents

Abstract

PURPOSE:To obtain the title film capable of enduring long-term use by forming a coating film of fluorine-containing acrylic polymer and fluorinated vinylidene based resin, etc., on a vinyl chloride based resin film containing an organic phosphate. CONSTITUTION:The aimed film obtained by forming (B) a coating film consisting of (i) 3-50 pts.wt. fluorine-containing acrylic polymer consisting of a copolymer of acrylic monomer and perfluoroalkyl group-containing acrylic monomer, (ii) 2-40 pts.wt. acrylic polymer containing no fluorine and (iii) 10-95 pts.wt. fluorinated vinylidene based resin on (A) one face or both faces of a vinyl chloride based film containing an organic phosphate or organic phosphoric acid metal salt of 0.1-15 pts.wt. based on 100 pts.wt. vinyl chloride based resin and improved in deterioration such as discoloration, lowering of physical properties or lowering of dust proofing property caused by outdoor exposure.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an agricultural vinyl chloride resin film.

More specifically, the present invention relates to an agricultural vinyl chloride resin film that has improved durability against undesirable deterioration phenomena such as discoloration, embrittlement, and reduced dust resistance caused by outdoor stretching. .

``Prior art'' In recent years, farmers cultivating useful plants have widely adopted methods of promoting or suppressing the cultivation of useful plants in greenhouses or tunnels in order to improve profitability. became.

The covering materials for this greenhouse or tunnel include polyethylene film, ethylene-vinyl acetate copolymer film, polyester film, polycarbonate film, hard and soft vinyl chloride resin films,
Glass etc. are used. Among these, soft vinyl chloride resin film is widely used because it has the best overall light transmittance, heat retention, mechanical strength, durability, and workability compared to other synthetic resin films. ing.

However, synthetic resin films used as covering materials for greenhouses or tunnels, including vinyl chloride resins, can be affected by sunlight, especially ultraviolet rays, after a year has passed since they have been used as covering materials. This results in changes over time such as deterioration of the appearance and decrease in film flexibility. Furthermore, recent improved agricultural techniques, especially economics,
Labor-saving agricultural techniques are increasingly requiring coating materials to withstand even harsher conditions than in the past.

Therefore, for the purpose of improving weather resistance, a technique has been widely adopted in which an organic phosphate ester or an organic phosphate metal salt is added and blended into a vinyl chloride resin base material to form a film.

On the other hand, depending on the region and location where soft vinyl chloride resin films are used for agricultural purposes, the dust-proofing of the outside surface of greenhouses or tunnels may deteriorate after two years have passed since the start of use. is significantly reduced and becomes unusable.

As a method for eliminating the above drawbacks, a method has been proposed in which the surface of agricultural vinyl chloride resin molded products is coated with a specific resin or paint, as described below.

(1) Method of applying acrylic resin (Special Publication Publication No. 46-2
9639, Japanese Patent Publication No. 50-28117, etc.) (11) Method of applying fluororesin through an adhesive layer (Japanese Patent Laid-Open No. 56-86748, Japanese Patent Laid-open No. 56-86748, Japanese Patent Laid-open No. 56-8155)
(3) Method of applying a mixture of fluororesin and acrylic resin (JP-A-63-2] No. 143, JP-A-4
6-65161, Japanese Patent Publication No. 63-236, etc.) However, 1) is not sufficient to prevent the plasticizer of the base material from bleeding out to the surface of the molded product, and (11) Due to the influence of plasticizers and the like migrating to the adhesive layer, the fluororesin and the base material cannot be bonded and integrated in a practically sufficient manner even through the adhesive layer.

(iii) was proposed as an improvement to these, but it was found that the interfacial adhesion between the base material and the fluororesin mixture was insufficient, and the acrylic resin and fluororesin were difficult to dissolve, resulting in an opaque coating film. There were drawbacks.

``Problems to be Solved by the Invention'' Under such circumstances, the present inventors have discovered that undesirable deterioration phenomena such as discoloration, embrittlement, and reduction in dustproof and antifogging properties caused by stretching outdoors are significant. With the aim of providing an agricultural vinyl chloride resin film with improved properties and durability, the present invention has been completed as a result of intensive studies.

"Means for Solving the Problems" The gist of the present invention is to apply an acrylic monomer on one or both sides of a vinyl chloride resin film containing an organic phosphate ester or an organic phosphate metal salt. and a perfluoroalkyl group-containing acrylic monomer [A], an acrylic polymer CB that does not substantially contain fluorine, and a vinylidene fluoride resin [A]. The present invention relates to an agricultural vinyl chloride resin film on which a film of a composition containing the three components (C) as main components is formed.

The present invention will be explained in detail below.

1. Vinyl chloride resin In the present invention, the vinyl chloride resin refers to polyvinyl chloride as well as a copolymer whose main component is vinyl chloride.

Examples of monomer compounds copolymerizable with vinyl chloride include vinylidene chloride, ethylene, propylene, acrylonitrile, maleic acid, itaconic acid, acrylic acid, methacrylic acid, and vinyl acetate. These vinyl chloride resins may be produced by any of conventionally known production methods such as emulsion polymerization, suspension polymerization, solution polymerization, and bulk polymerization.

In order to impart flexibility to the vinyl chloride resin serving as the base, 20 to 60 parts by weight are added to 100 parts by weight of the resin.
Parts by weight of plasticizer are incorporated. By adjusting the blending amount of plasticizer within the above range, the desired soft vinyl chloride molded product can be produced.
It can provide excellent flexibility and mechanical properties.

Examples of plasticizers include phthalic acid derivatives such as di-n-octyl phthalate, di-2-ethylhexyl phthalate, dihendyl phthalate, diisodecyl phthalate, didodecyl phthalate, and didodecyl phthalate; dioctyl phthalate and the like; Isophthalic acid derivatives; Adipic acid derivatives such as di-n-butyl adipate and dioctyl adipate; Maleic acid derivatives such as di-n-butyl maleate;
Citric acid derivatives such as n-butyl citrate; Itaconic acid derivatives such as monobutyl itaconate; Oleic acid derivatives such as butyl oleate 1-; Ricinoleic acid derivatives such as glycerin monolysyllate; Others, epoxidized soybean oil, Examples include epoxy resin plasticizers.

In the agricultural vinyl chloride resin film of the present invention, an organic phosphate ester or an organic phosphate metal salt is blended with the vinyl chloride resin.

Examples of organic phosphoric acid esters include triisopropylphenyl phosphate, isodecyl diphenyl phosphate,
Tricresyl phosphate, tris(isopropylphenyl) phosphate, tributyl phosphate, triethyl phosphate, trioctyl phosphate, tributoxyethyl phosphate, l-riphenyl phosphate, octyldiphenyl phosphate-I, tricylenyl phosphate-1 Among them, tricresyl phosphate and tricylenyl phosphate are particularly preferred.

The above organic phosphate esters can be used alone or in the form of a composite. For example, a composite of an organic phosphoric acid ester and an organic phosphorous ester may be mentioned, and the organic phosphorous ester also includes a phosphonate-based compound such as diethyl ether=1.

Examples of organic phosphate metal salts include general 2(1) or (nl, where M means zinc, calcium, barium, magnesium, cobalt, or strontium; R1, R2, and R3 are each alkyl, aryl,
It means arylalkyl, alkylaryl, or an alkyl group having an ether bond. ) are listed.

Examples of alkyl groups represented by R1, R2 and R3 include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, amyl, neopentyl, isoamyl, hexyl, isohexyl, heptyl, octyl, isooctyl. , 2-ethylhexyl,
Decyl, isodecyl, lauryl, tridecyl, CI2~
CI3 mixed alkyl, stearyl, cyclopentyl, cyclohexyl, cyclooctyl, cyclododecyl, 4-
Examples include methylcyclohexyl group.

Examples of aryl groups include phenyl and naphthyl groups.

Examples of the arylalkyl group include benzyl, β-phenylethyl, α-phenylpropyl, and β-phenylpropyl groups.

Examples of alkylaryl groups include tolyl, xylyl,
Examples include ethylphenyl, butylphenyl, tert-butylphenyl, octylphenyl, isooctylphenyl, tertiary octylphenyl, nonylphenyl, 2,4-di-tert-butylphenyl, and the like.

Examples of the alkyl group having an ether bond include furfuryl, tetrahydrofurfuryl, 5-methylfurfuryl, and α-methylfurfuryl groups, or methyl-, ethyl-isopropyl-, butylisobutyl-hexyl-, and cyclohexylfurfuryl groups. Nyl cellosolve residue; methyl-, ethyl isopropyl-, butyl-, isobutyl carpitol residue; l-lyethylene glycol monomethyl ether, -monoethyl ether, -monobutyl ether residue: glycerin 1,2-dimethyl ether, -monoethyl Examples include ether, -monobutyl ether residue; glycerin 1,2-dimethyl ether, I3-diethyl ether, -1-ethyl-2-propyl ether residue; nonylphenoxypolyethoxyethyl, lauroxypolyethoxyethyl residue, and the like.

-I 0 - Furthermore, the metal represented by M is particularly preferably zinc, calcium, and barium.

These organic phosphate esters or organic phosphate metal salts are 1
A species or two or more species can be blended.

In the agricultural film of the present invention, it is most preferable to use an organic phosphate ester and an organic phosphate metal salt in combination in terms of film formation properties and outdoor extensibility.

The amount of organic phosphate ester or organic phosphate metal salt is:
It is selected within the range of 0.1 to 15 parts by weight, preferably within the range of 0.2 to 10 parts by weight, based on 100 parts by weight of the vinyl chloride resin. If the amount is less than 0.1 part by weight, the weather resistance and dustproof properties of the soft vinyl chloride resin film will not be improved. If the amount is more than 15 parts by weight, the transparency of the film will be extremely poor, which is not preferable. 0 within the above range
．． Particularly preferred is a range of 2 to 8 parts by weight.

In addition, the vinyl chloride resin contains the above plasticizer,
In addition to the phosphate ester or organic phosphate metal salt, if necessary, known resin additives that are usually added to synthetic resins for molding, such as lubricants, heat stabilizers, ultraviolet absorbers, and light stabilizers. Agents, antioxidants, stabilizing agents, antistatic agents, antifogging agents, antifungal agents, antialgae agents, inorganic fillers, coloring agents, and the like can be blended.

Examples of the lubricant, heat stabilizer, or antioxidant that can be incorporated into the film of the present invention include polyethylene wax, bisamide compounds, liquid paraffin, organic phosphite compounds, β-dikene compounds, and the like. .

The above various resin additives can be used alone or in combination.

-1- The amount of the various resin additives added is within a range that does not deteriorate the properties of the film, usually 10% of the base vinyl chloride resin.
It can be selected within a range of 10 parts by weight or less relative to 0 parts by weight.

To blend the plasticizer, organic phosphate ester or organic phosphate metal salt, and other resin additives into the vinyl chloride resin that will serve as the base of the film, weigh the necessary amounts of each and use a ribbon blender or hand mixer. A blender, a super mixer, or any other conventionally known blender or mixer may be used.

The resin composition thus obtained can be formed into a film by a method known per se, such as melt extrusion method (T-
(including Gouy method and inflation method), calendar molding method, solution casting method, etc.

2. Fluorine-containing acrylic polymer [A] 2-1. Acrylic Monomer Acrylic monomer refers to alkyl esters of acrylic acid or methacrylic acid.

Specifically, the alkyl esters of acrylic acid or methacrylic acid include methyl acrylate, ethyl acrylate, n-propyl acrylate, 1so-propyl acrylate-1-, n-butyl acrylate-1., 1s
o-butyl acrylate, cyclohexyl acrylate-1
C6-C2□ alkyl esters of acrylic acid such as 2-ethylhexyl acryle-1, decyl acryle], dodecyl acryle], tridecyl acrylate, stearyl acrylate, etc.: methyl methacrylate, ethyl methacrylate -1., n-propyl methacrylate, iso-propyl methacrylate-1., n-butyl acrylate, 1so-butyl methacrylate-1., cyclohexyl methacrylate, 2-ethylhexyl methacrylate, decyl methacrylate, dodecyl methacrylate, tridecyl Examples include 01-C2□ alkyl esters of methacrylic acid such as methacrylate and stearyl methacrylate.

The above acrylic monomers can be used alone or as a mixture. Further, these acrylic monomers may be used together with other copolymerizable monomers. Examples of such other monomers include α, which contains one or two or more carboxyl groups in the molecule,
There are β-unsaturated carboxylic acid compounds, such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, aconitic acid, and crotonic acid.

Further, for example, styrene, acrylonitrile, methacryl-nitrile, vinyl acetate, vinyl propionate, acrylamide, methacrylamide, n-butoxyacrylamide, n-butoxymethacrylamide, etc. can also be used.

2-2 Perfluoroalkyl group-containing acrylic monomer The perfluoroalkyl group-containing acrylic monomer is an ester of acrylic acid or methacrylic acid having a perfluoro primary coargyl group, and specifically, 2,2
．． 2-1-Lifluoroethyl acrylate, 2,2.2
- Trifluoroethyl methacrylate, 2.2,3.
3-te1-rafluoropyracryle-1, 2.2
．． 3.3-Tetrafluoropropyl methacrylate-1-1
2,2,3,3,3-pentafluoropropyl acrylate-1-12,2,3,3,3-pentafluoropropyl methacrylate, 1-1-lifluoromethyl-2,2,
2-1~lifluoroethyl acrylate-1., 1-1-lifluoromethyl 2.2,2. , l-lifluoroethyl methacrylate, 22.3.3.4.4.5.5-octafluoropendermethacrylate, 2,2,3.3.4.4
,5.5-octafluoropendelmethacryle-1-2
2,2,3,3,4,4-hexafluorophytyl acrylate, 2,2,3,3,4.4-hexafluor 1-cobutyl meccrylate, 2-perfluorooctylethyl acrylate, 2- Perfluorooctyl methacrylate
1.,2-perfluorononylethyl acrylate, 2
-perfluorononyl ethyl methacrylate-1 and the like. In particular, when the number of fluorines in the perfluoro group is 5
The above are preferred. These may be used alone or in combination of two or more.

2-3. The copolymerization ratio of the blended acrylic monomer and the perfluoroalkyl group-containing acrylic monomer is preferably in the range of 20 to 99% by weight of the former.

If the amount of acrylic monomer is less than this range, the adhesion of the formed film to the material will not be sufficient, and if it is more than this range,
Does not function as a fluorine-containing acrylic polymer.

A predetermined amount of an acrylic monomer and a perfluoroalkyl group-containing acrylic monomer are mixed together and charged into a polymerization tank together with an organic solvent. A polymerization initiator and, if necessary, a molecular weight regulator are added, and the mixture is heated while stirring. , polymerize. For polymerization, generally known methods such as suspension polymerization and solution polymerization are employed. In this case, examples of polymerization initiators that can be used include radical-generating catalysts such as α, α-azubisisobutyroni, henzoyl peroxide, and cumene hydroperoxide, and examples of molecular weight regulators include butyl Examples include mercaptan, n-dodecylmercaptan, tert-dodecylmercaptan, and β-mercaptoethanol.

Examples of organic solvents used in polymerization include methanol, ethanol, n-propanol, isopropanol, n-butanol, 5ec-butanol, tert-butanol, n-propanol,
-amyl alcohol, isoamyl alcohol, tart
-Alcohols such as amyl alcohol, n-hexyl alcohol, cyclohexanol; Hensen, toluene,
Aromatic hydrocarbons such as xylene; acetate esters such as ethyl acetate and butyl acetate; Ketones such as n-propyl ketone, diisopropyl ketone, di-n-amyl ketone, and cyclohexanone; tetrahydrofuran, and the like, and these can be used alone or in combination of two or more.

3. Acrylic polymer CB) The acrylic polymer CB) that does not substantially contain fluorine is a polymer mainly composed of alkyl esters of acrylic acid or methacrylic acid described in 2-1. Obtained by polymerization method.

4. Vinylidene fluoride resin [C] Vinylidene fluoride resin [C] is a homopolymer of vinylidene fluoride, or vinylidene fluoride and other fluorinated unsaturated monomers and/or does not contain fluorine. Copolymers with copolymerizable monomers and polymers obtained by partially modifying or modifying these polymers are also included.

These vinylidene fluoride resins can be used alone or in combination of two or more.

Further, it may be used in combination with other fluorine-containing resins, such as 47-fluorinated ethylene, chlorotrifluoroethylene, fluoroethylene, etc.

5. The blending amounts of the coating fluorine-containing acrylic polymer (acrylic polymer substantially free of Al and fluorine [B] and vinylidene fluoride resin [C] are [A13 to 50 parts by weight, [832
-40 parts by weight, l:c) 10-95 parts by weight. If the ratio of polymer [A] to resin [C] is too small, the formed film will not have sufficient transparency. On the other hand, if the ratio of the polymer CB) to the resin [C] is too small, the adhesion of the formed film to the surface of the substrate will be poor and the film will easily peel off, which is undesirable. On the other hand, if the ratio of the polymer [Al or polymer [B] to the resin [C] is too high, the effect on the migration prevention properties of plasticizers, etc., stain resistance, and water resistance of the formed film will not be sufficient, which is undesirable. .

In addition to these components, the above coating composition may contain auxiliary components such as antioxidants, neutralizers, ultraviolet absorbers, light stabilizers, antistatic agents, pigments, dyes, blowing agents, and lubricants. It can be used after being dispersed and/or dissolved in an organic solvent.

Examples of organic solvents include aliphatic hydrocarbons such as heptane and cyclohexane; aromatic hydrocarbons such as hensen, toluene, and xylene equivalent alcohols such as methanol, ethanol, isopropyl alcohol, and polyoxyethylene glycol; and halogenated hydrocarbons such as methanol, isopropyl alcohol, and polyoxyethylene glycol. Chloroborum, hydrocarbon tetrachloride, chlorhenzene, etc.; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone; esters such as methyl acetate, allyl acetate-1, ethyl stearate; amines such as trimethylamine, diphenylamine, hexamethylene diamine, etc.; Other examples include dimethylformamide, dimethylacetamide, dioxane, diethyl ether, diethylene dithioglycol, diacetone alcohol, hendinitrile, and dimethyl sulfoxide, which can be used alone or in combination of two or more.

In order to apply the above coating composition to form a coating on the surface of the vinyl chloride resin film, various known methods are applied depending on the shape of the molded product. For example, when forming a film in a solution state, coating methods such as doctor blade coating method, gravure roll coating method, air knife coating method, reverse roll coating method, dip coating method, curtain roll coating method, spray coating method, rondo coating method, etc. method is used.

When the coating composition is formed as a single coating without forming it into a solution, a coextrusion method, an extrusion coating method, an extrusion lamination method, and a lamination method are used. When a coating method is used as a film forming method, there are, for example, natural drying, hot air drying, infrared drying, far-infrared drying, etc., but if drying speed and safety are taken into account, Hot air drying methods are advantageous. In this case, the temperature conditions should be in the range of 50 to 150°C, and the time should be in the range of 10 seconds to 15 seconds.
It is better to choose between minutes.

In the present invention, the thickness of the coating formed on the surface of the base film is preferably 1/IO or less of the thickness of the base film. Since the thickness of the coating is smaller than the I/I O of the base film, and there is a difference in flexibility between the base film and the coating, phenomena such as peeling of the coating from the base film will not occur (, This is undesirable because cracks occur in the coating and the strength of the base film decreases.

In addition, before applying the above coating composition, the surface of the soft vinyl chloride resin film may be washed with alcohol or water, subjected to plasma discharge treatment or corona discharge treatment, or undercoated with other paint or primer. Pretreatment such as the following may be performed.

When the agricultural vinyl chloride resin film according to the present invention is actually used for agricultural purposes, when the coating is formed on only one side, the side on which this coating is provided will be the outside of the greenhouse or tunnel. Use it as follows.

Example F” The present invention will be described in detail based on Examples below.
The present invention is not limited to the following examples unless it exceeds the gist thereof.

Examples 1 to 5, Comparative Examples 1 to 4 1. Base integral film Xiatsu I - Polyvinyl chloride (P-1400) 100 parts by weight Dioctyl phthalate 50 Epoxidized soybean oil 3 Barium-zinc composite liquid stabilizer 1.5 barium stearate
0.2 Zinc stearate 0.4
A resin composition was prepared consisting of sorbitan laurate 1.524 dihuman l':1 xyhensiphenone 0.5, and organic phosphate ester or organic phosphate metal salt of the type and amount shown in Table 2 was blended. .

Each formulation was stirred and mixed using a super mimizer for 10 minutes, and then kneaded using a mill roll heated to 180'C to prepare a base film having a thickness of 0.15 mm.

70 parts by weight of methyl ethyl ketone, 30 parts by weight of toluene, 1.0 parts by weight of Hensoil peroxide and Table 1 Add 100 parts by weight of the mixture of each monomer shown in , stir at 80"C for 3 hours in a nitrogen gas flow, and add 0.5 parts by weight of hendyl peroxide to continue the reaction for about 3 hours. Resins a and b, which are fluorine-containing acrylic polymers, were obtained by continuing the reaction at a high temperature.

■, 70 parts by weight of methyl ethyl ketone was added to a reactor similar to ■ of Akil Person B.
30 parts by weight of toluene, 1.0 parts by weight of hendiyl peroxide, and 100 parts by weight of the mixture of each monomer shown in Table 1 were charged, and the mixture was further peroxidized at 70°C for 3 hours while stirring in a nitrogen gas stream. Add 0.5 parts by weight of Hengeyl to react to approx. 3 parts by weight.
Resin c, which is an acrylic polymer, is continuously maintained at the same temperature for a certain period of time.
, d was obtained.

■, 1-Fluorine-containing acrylic polymer [A], acrylic polymer [B], and commercially available vinylidene fluoride resin [C] are blended in the types and amounts shown in Table 2. , this has a solid content of 2
Methyl ethyl ketone was added to give a coating composition of 0% by weight.

Each of the coating compositions described in "2" was applied to one side of the base film prepared by the above method using a #5 bar coater. The applied film was kept in an oven at 130°C for 1 minute to volatilize the solvent.

The amount of coating on each film obtained was approximately 3 g/rrT.

V, 7±th order h cvlj- The performance of the film was evaluated in the following manner and the results are shown in Table 3.

The initial appearance of the film was visually observed. The evaluation criteria are as follows.

◎...Colorless and with excellent transparency.

○: Slightly white, but transparent.

△: White and semi-transparent.

×...Things that are cloudy and devitrified.

Cellophane tape was adhered to the coating surface of the adhesive film, and when the cellophane tape was peeled off, the peeling status of the coating was observed with the naked eye. The evaluation criteria are as follows.

◎...The coating did not peel off at all and remained completely.

○...More than 2/3 of the coating remained without peeling off.

△: Two or three or more of the coatings have peeled off.

×: The coating has completely peeled off.

Nine types of outdoor expansion test films were installed in a roof-type greenhouse (frontage 3 m, depth 5 m, ridge height 1.5 m,
The roof slope (30 degrees) was coated with the coated side facing outside of the house, and
An annual expansion test was conducted.

The stretched film was subjected to an external appearance test and the elongation retention rate of the film was measured by the following method, and the dust resistance of the film during the stretching test was evaluated.

Appearance of the film: Evaluation criteria based on visual observation of the appearance are as follows.

◎...No changes in appearance such as discoloration are observed.

○...Some changes in appearance such as slight discoloration are observed.

△　...Significant changes in appearance such as discoloration are observed.

×: Discoloration is observed on the entire surface.

Elongation retention rate of film: means a value calculated by the following formula.

Dust resistance: means the value calculated using the following formula.

* Direct light transmittance at a wavelength of 555 mμ (manufactured by 8 Tateki Seisakusho, EPS-20 model used) The measurement results were displayed as follows.

◎...The light transmittance after expansion is 90% or more of that before expansion.

○...The light transmittance after stretching is in the range of 70 to 89% of that before stretching.

Δ...The light transmittance after stretching is in the range of 50 to 69% of that before stretching.

・The light transmittance after expansion is 50% of that before expansion.

[Effects of the Invention] As is clear from the Examples above, the present invention has the following effects, and its agricultural utility value is extremely large.

(1) Even when the agricultural vinyl chloride resin film according to the present invention is stretched outdoors for a long period of time, there is little discoloration, deterioration in physical properties, or deterioration in dust resistance, and it can be used for a long period of time.

(2) The agricultural vinyl chloride resin film according to the present invention has excellent adhesion between the base film and the coating derived from the coating composition formed on its surface, so the coating is difficult to peel off and can be used for a long period of time. Withstands use.

Patent applicant: Mitsubishi Kasei Vinyl Co., Ltd. Representative Patent Attorney Hase (1 other person)

Claims (1)

[Claims] (1) A copolymer of an acrylic monomer and a perfluoroalkyl group-containing acrylic monomer is applied to one or both sides of a vinyl chloride resin film containing an organic phosphate ester or an organic phosphate metal salt. A film is formed of a composition whose main components are a fluorine-containing acrylic polymer [A], an acrylic polymer substantially free of fluorine [B], and a vinylidene fluoride resin [C]. Agricultural vinyl chloride resin film.