JP2000327874A - Laminated acrylic resin film and laminated body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an acrylic resin film exhibiting excellent matte properties even after laminated. SOLUTION: The title acrylic resin film for lamination is obtained by forming into a film a resin mixture, which comprises 100 pts.wt. of an acrylic resin (A) comprising 0-20 wt.% of (A-1), 5-100 wt.% of (A-2) and 0-95 wt.% of (A-3) shown below, 0.5-15 pts.wt. of a needle inorganic matter and 1-20 pts.wt. of a matte agent and has a melt viscosity of not higher than 35,000 Pa.S at 180 deg.C and a shear rate of 6.1 sec-1. A laminated body such as wallpaper or the like is prepared using the same. (A-1) A thermoplastic polymer comprising 60-100 wt.% of methyl methacrylate and having a reduced viscosity of higher than 0.1 L/g. (A-2) A rubber-containing polymer obtained by polymerizing 10-2,000 pts.wt. of monomers (comprising 50-100 wt.% of methyl methacrylate or the like) onto an elastic copolymer. (A-3) A thermoplastic polymer comprising 50-99 wt.% of 1-4C alkyl-containing methacrylic ester and 1-50 wt.% of an acrylic ester and having a reduced viscosity of not higher than 0.1 L/g.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated acrylic resin film exhibiting good matting properties even after being laminated on a substrate, and a laminate having this film on the surface. These can be applied to building materials in general, and are particularly suitable for wallpaper.

[0002]

2. Description of the Related Art The main properties required for a laminate film for wallpaper include stain resistance to a plasticizer, matt design, and the like.

[0003] A low-cost, highly processable vinyl chloride resin is often used as a base material for wallpaper. However, since this vinyl chloride resin contains a large amount of a plasticizer, there is a problem that the plasticizer migrates and the surface is contaminated after many years of use. Therefore, when a laminate film is attached to the surface of the wallpaper to prevent this, the film is required to have stain resistance.

With respect to the matt design, there is a tendency that the higher the mattness, the higher the sense of quality and the better. Therefore, when laminating the laminate film to the wallpaper,
It is common to use a matte film. As a method of laminating the film, it is often carried out through an embossing roll with a grain on the surface, and the matte property of the wallpaper is determined by the matte property of the laminate film itself and the graininess at the time of lamination to the substrate .

[0005] For example, JP-A-6-73199 and JP-A-6-73200 disclose methods for improving the crimping property after laminating an acrylic resin film.

[0006]

SUMMARY OF THE INVENTION Japanese Patent Application Laid-Open No. 6-73199
JP-A-6-73200 discloses an acrylic resin film, which can provide matting properties and improve the glossiness of the film surface after lamination, but the improvement is still at the level required by the market. Has not reached.

[0007] That is, an object of the present invention is to provide an acrylic resin film for lamination which has excellent matting properties enough to satisfy the market requirements even after lamination, and has a sufficiently improved glossiness on the film surface, and this film has To provide a laminate having the above.

[0008]

According to the present invention, there is provided a thermoplastic polymer (A-1) having a content of 0 to 20% by weight, a rubber-containing polymer (A-2) having a content of 5 to 100% by weight and a thermoplastic polymer shown below. 100 parts by weight of an acrylic resin (A) containing from 0 to 95% by weight of the combined (A-3) as a main component, and 0.2% of a needle-like inorganic substance (B).
5 to 15 parts by weight, 1 to 20 parts by weight of an inorganic or organic crosslinked matting agent other than acicular inorganic substances (C), and 0 to 20 parts by weight of a plasticizer (D), and 180 ° C., sialate 6 35,000 Pa · S melt viscosity at ¹ sec ^-1
It is a laminated acrylic resin film obtained by forming the following resin mixture into a film. (A-1) a thermoplastic polymer comprising 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of another vinyl monomer copolymerizable therewith;
Reduced viscosity of polymer (0.1 g of polymer
Thermoplastic polymer dissolved in 0 ml and measured at 25 ° C.) exceeds 0.1 L / g. (A-2) rubber-containing polymer alkyl acrylate 35 to 99.9% by weight;
It is obtained by polymerizing a monomer mixture comprising 0 to 64.9% by weight of another vinyl monomer copolymerizable therewith and 0.1 to 10% by weight of a copolymerizable crosslinkable monomer. In the presence of 100 parts by weight of an elastic copolymer having one or more structures, a monomer comprising 50 to 100% by weight of an alkyl methacrylate and 0 to 50% by weight of another vinyl monomer copolymerizable therewith. A rubber-containing polymer obtained by polymerizing 10 to 2,000 parts by weight of a body or monomer mixture. (A-3) Thermoplastic polymer 50 to 99% by weight of an alkyl methacrylate having an alkyl group having 1 to 4 carbon atoms, 1 to 50% by weight of an alkyl acrylate, and another vinyl copolymerizable therewith. A thermoplastic polymer comprising from 0 to 49% by weight of a monomer and having a reduced viscosity of 0.1 L / g or less (0.1 g of the polymer is dissolved in 100 ml of chloroform and measured at 25 ° C.).

Further, the present invention is a laminate having the above acrylic resin film on the surface.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below.

The acrylic resin (A) as a base resin for constituting the film of the present invention is a thermoplastic polymer (A-
1) 0 to 20% by weight, rubber-containing polymer (A-2) 5-1
00% by weight, and a thermoplastic polymer (A-3) 0 to 9
Contains 5% by weight as a main component. Hereinafter, each polymer (A
-1) to (A-3) will be described.

The thermoplastic polymer (A-1) comprises 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of another vinyl monomer copolymerizable therewith, and has a reduced viscosity of the polymer. (0.1 g of polymer dissolved in 100 ml of chloroform and measured at 25 ° C.) is a thermoplastic polymer exceeding 0.1 L / g, and is a component that plays an important role in film formability.

In the present invention, the thermoplastic polymer (A-
The reduced viscosity of 1) is important, and the reduced viscosity is 0.1 L.
/ G or less, the film does not have good thickness accuracy.
The reduced viscosity is usually more than 0.1 L / g and 2 L / g or less,
Preferably it is 0.2-1.2 L / g.

In the thermoplastic polymer (A-1), other copolymerizable vinyl monomers include, for example, alkyl acrylate, alkyl methacrylate other than methyl methacrylate, aromatic vinyl compound, vinyl cyanide And the like. These can be used alone or in combination of two or more.

The thermoplastic polymer (A-1) is preferably produced by an emulsion polymerization method, and can be recovered in a powder form by a usual emulsion polymerization method and a post-treatment method.

The rubber-containing polymer (A-2) is composed of 35 to 99.9% by weight of an alkyl acrylate, 0 to 64.9% by weight of another vinyl monomer copolymerizable therewith, Methacrylic acid alkyl ester 50 in the presence of 100 parts by weight of an elastic copolymer having at least one structure obtained by polymerizing a monomer mixture comprising 0.1 to 10% by weight of a water-soluble crosslinkable monomer. A rubber-containing polymer obtained by polymerizing 10 to 2000 parts by weight of a monomer or monomer mixture consisting of 0 to 100% by weight and 0 to 50% by weight of another vinyl monomer copolymerizable therewith. is there.

The rubber-containing polymer (A-2) is obtained by, for example, polymerizing the above components for an elastic copolymer in at least one stage by an emulsion polymerization method or the like to obtain an elastic copolymer. It is obtained by polymerizing a methacrylic acid ester or the like in at least one stage in the presence of a polymer by an emulsion polymerization method or the like. By this polymerization, the methacrylic acid ester and the like are graft-copolymerized to the elastic copolymer to form a crosslinked elastic copolymer having a graft chain.

That is, the rubber-containing polymer (A-2) is
It is a graft copolymer having a multilayer structure containing an alkyl acrylate as a main component of rubber. The rubber-containing polymer (A-2) has an effect of imparting excellent impact resistance and elongation to the film.

In the rubber-containing polymer (A-2), the alkyl acrylate used to constitute the elastic copolymer is preferably an alkyl acrylate having 1 to 8 carbon atoms, particularly butyl acrylate or acryl acrylate. 2-ethylhexyl acid and the like are more preferred. Rubber-containing polymer (A-2)
In, other vinyl monomers copolymerizable with the alkyl acrylate used as desired to constitute the elastic copolymer, for example, methyl methacrylate,
Alkyl methacrylates such as butyl methacrylate and cyclohexyl methacrylate, styrene and acrylonitrile are preferred. These can be used alone or in combination of two or more. In the rubber-containing polymer (A-2), the copolymerizable crosslinkable monomer used to form the elastic copolymer is not particularly limited, but ethylene glycol dimethacrylate, butanediol dimethacrylate, Allyl acrylate, allyl methacrylate, diallyl phthalate, triallyl cyanurate,
Triallyl isocyanurate, divinylbenzene, diallyl maleate, trimethylolpropane triacrylate, allyl cinnamate and the like can be mentioned. These can be used alone or in combination of two or more.

Examples of the alkyl methacrylate to be grafted onto the elastic copolymer include methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate and the like.

Other copolymerizable vinyl monomers to be grafted to the elastic copolymer are not particularly limited. For example, alkyl acrylates such as methyl acrylate, butyl acrylate and cyclohexyl acrylate, styrene, Acrylonitrile and the like can be mentioned.

The amount of the monomer or monomer mixture to be grafted is from 10 to 2,000 per 100 parts by weight of the elastic copolymer.
The polymerization can be carried out in at least one stage using at least one part by weight, preferably 20 to 200 parts by weight.

The rubber-containing polymer (A-2) is obtained, for example, by usual emulsion polymerization. At the time of polymerization, a chain transfer agent, other polymerization aids and the like may be used. As a chain transfer agent,
Conventionally known various ones can be used, and mercaptans are particularly preferable.

The thermoplastic polymer (A-3) has 1 to 1 carbon atoms.
50 to 99% by weight of an alkyl methacrylate having an alkyl group of 4 and an alkyl acrylate 1 to 1
It consists of 50% by weight and 0 to 49% by weight of other vinyl monomers copolymerizable therewith, and has a reduced viscosity of the polymer (0.1 g of the polymer dissolved in 100 ml of chloroform and measured at 25 ° C.). It is a thermoplastic polymer of 0.1 L / g or less.

In the thermoplastic polymer (A-3), examples of the alkyl methacrylate include methyl methacrylate, ethyl methacrylate, butyl methacrylate and the like. Particularly, methyl methacrylate is preferred. Examples of the alkyl acrylate include methyl acrylate, ethyl acrylate, butyl acrylate, and the like.

In the thermoplastic polymer (A-3), conventionally known various monomers can be used as other copolymerizable vinyl monomers, and examples thereof include aromatic vinyl compounds and vinyl cyanide compounds. No.

The method for polymerizing the thermoplastic polymer (A-3) is as follows.
Although not particularly limited, it can be carried out by a usual method such as suspension polymerization, emulsion polymerization, or bulk polymerization. At the time of polymerization, a chain transfer agent, other polymerization aids and the like may be used. As the chain transfer agent, various conventionally known ones can be used, and mercaptans are particularly preferable.

The acrylic resin (A) according to the present invention contains 0 to 20% by weight of the thermoplastic polymer (A-1), 5 to 100% by weight of the rubber-containing polymer (A-2), and the thermoplastic polymer (A-
3) Preferably, the sum of 0-95% by weight comprises 100% by weight. Furthermore, the thermoplastic polymer (A-1) 0.1.
It is preferable that the content is 1 to 5% by weight, the rubber-containing polymer (A-2) is 30 to 95% by weight, and the thermoplastic polymer (A-3) is 5 to 70% by weight.

In the present invention, as the needle-like inorganic substance (B), conventionally known various substances can be used, and specific examples include calcium carbonate, aluminum borate, potassium titanate and the like. The average fiber length of the acicular inorganic substance (B) is preferably 50 μm or less from the viewpoint of shapeability. If the average fiber length is within this range, problems such as clogging of the die plate of the extruder are unlikely to occur. Further, the average fiber diameter is preferably 2 μm or less from the viewpoint of mattability.

The mattability is improved by using the acicular inorganic substance (B) in combination. This is thought to be due to the needle shape. In other words, it is presumed that fine unevenness formed at the tip of the needle exists between the surface unevenness formed by the inorganic or organic crosslinked matting agent, so that the matting property is improved.

The addition amount of the needle-like inorganic substance (B) is 0.5 to 1
It is within the range of 5 parts by weight. If the added amount is less than 0.5 part by weight, the effect of improving the matting property is small, and if it exceeds 15 parts by weight, not only the film forming property is lowered but also the effect corresponding to the added amount is not exhibited. The preferred addition amount is 2 to 10 parts by weight.

In particular, when a general inorganic or organic crosslinked matting agent is used, the glossiness of the film cannot be improved by increasing the amount of the matting agent added, but the acicular inorganic substance (B)
When used together, it is possible to eliminate the shininess due to fine irregularities.

In the present invention, as the inorganic or organic crosslinked matting agent (C) other than the acicular inorganic substance, various conventionally known inorganic and organic matting agents can be used. Examples of the inorganic matting agent include mica fine particles and talc fine particles. As the organic crosslinked matting agent, resin fine particles having a crosslinked structure having an average particle diameter of 1 to 20 μm are generally used. As the organic cross-linking matting agent, an acrylic resin-based matting agent is preferable from the viewpoint of transparency.

The addition amount of the inorganic or organic crosslinked matting agent (C) is in the range of 1 to 20 parts by weight. If the added amount is less than 1 part by weight, the matting property is insufficient, and if it exceeds 20 parts by weight, physical properties such as film forming properties of the obtained film are significantly reduced. The preferred addition amount is 5 to 15 parts by weight.

In the present invention, 20 parts by weight or less of a plasticizer (D) can be used if necessary. As the plasticizer (D), various conventionally known plasticizers can be used, and the range of 0.1 to 20 parts by weight is preferable. From the viewpoints of plasticizing effect, film appearance, and economy, polyalkylene glycol is preferable, and polyethylene glycol is particularly preferable.

The resin mixture consisting of component (A), component (B) and component (C) is 180 ° C. at a shear rate of 6.1 sec ^-1.
If the melt viscosity at 35,000 Pa · S or less,
Even without adding the plasticizer (D), a sufficient matting property is exhibited. On the other hand, if the melt viscosity of the resin mixture composed of the component (A), the component (B) and the component (C) at 180 ° C. and the shear rate of 6.1 sec ⁻¹ exceeds 35,000 Pa · S, the plasticizer (D) is added. Thus, the melt viscosity needs to be 35,000 Pa · S or less.

The amount of the plasticizer (D) is at most 20 parts by weight. If the addition amount exceeds 20 parts by weight, the pellets will cause extreme blocking during drying, making film formation difficult,
Even if a film can be formed, the heat resistance becomes poor. A preferred range of the addition amount is 15 parts by weight or less.

In the present invention, a resin mixture containing the component (A), the component (B) and the component (C), and if necessary, the component (A), that is, a material (pellet or the like) in a state before being formed into a film. ) Needs to be 35,000 Pa · S or less at 180 ° C. and 6.1 sec ⁻¹ of shear rate. If the melt viscosity exceeds 35,000 Pa · S, the crimping property during lamination becomes poor, and good matting properties cannot be exhibited after lamination.
This melt viscosity is preferably not more than 30,000 Pa · S.

The resin mixture constituting the laminated acrylic resin film of the present invention may contain, if necessary, general compounding agents such as stabilizers, lubricants, processing aids, impact resistance aids, foaming agents, fillers, Coloring agents, ultraviolet absorbers, antibacterial agents, fungicides and the like can be added.

By forming such a resin mixture into a film, the laminated acrylic resin film of the present invention can be obtained. As a method of forming this film, for example, T
Examples include a melt extrusion method such as a die method and an inflation method, and a calendar method. From the viewpoint of economy, the T-die method is preferable.

The laminate of the present invention is characterized by having the above-mentioned laminated acrylic resin film in the surface layer. As the substrate on which the film is to be laminated, various thermoplastic resin substrates and the like conventionally known as the substrate of the laminate can be used. In particular, in the case of wallpaper, polyvinyl chloride, polypropylene, and polyethylene terephthalate are often used from the viewpoint of processability and price. Further, it is possible to bond even a base material such as a thermosetting resin, a steel plate, a wood, a paper and the like which is not heat-sealed by using an adhesive. The method for producing the laminate using the laminated acrylic resin film is not particularly limited, and a conventionally known lamination method can be employed. In particular, in the case of wallpaper, a thermal lamination method using an embossed heating roll is generally used.

[0042] In the laminate, an intermediate layer may be provided between the laminated acrylic resin film and the base material, if necessary.

[0043]

The present invention will be described in more detail with reference to the following examples. In the examples, “parts” means “parts by weight”.

The evaluation method used in the examples is as follows. (1) Pellet melt viscosity Toyo Seiki Seisakusho Co., Ltd., using Capillograph,
The measurement was carried out at 180 ° C. and a shear rate of 6.1 sec ⁻¹ . (2) Film-forming property The state of the formed film was observed, and those having no particular problem were evaluated as “○”. (3) Film surface glossiness According to ASTM-D523, manufactured by Murakami Color Research Laboratory,
The surface gloss was measured at 60 degrees using a gloss meter GM-26D. (4) Surface gloss after lamination The laminated body was formed by subjecting the formed film to thermal lamination at 150 ° C. and 30 kg / cm ² together with a soft vinyl chloride resin film having a thickness of 100 μm using an embossed laminating roll. After lamination, the 60-degree surface glossiness of the film in the laminated body after the lamination was measured in the same manner as in the above method (1). (5) Shininess of the film after lamination As a guide of the evaluation of the surface appearance, the surface appearance of the film after lamination (especially the glossiness of the film) is visually observed. Those were evaluated as "x". (6) Reduced Viscosity The reduced viscosity was measured by AVL-2C manufactured by Sanden Kogyo Co., Ltd.
The measurement was performed using chloroform as a solvent using an automatic viscometer. The measurement was performed by dissolving 0.1 g of the sample in 100 ml of chloroform.

<Example 1> (Production of thermoplastic polymer (A-1)) A reaction vessel was charged with 200 parts of ion-exchanged water substituted with nitrogen, and 1 part of emulsifier potassium oleate and 0.3 part potassium persulfate were added. I charged. continue,
40 parts of methyl methacrylate, n-butyl acrylate 10
Parts, 0.005 parts of n-octyl mercaptan,
The mixture was stirred at 65 ° C. for 3 hours under a nitrogen atmosphere to complete the polymerization. Subsequently, a monomer mixture consisting of 48 parts of methyl methacrylate and 2 parts of n-butyl acrylate was added dropwise over 2 hours, and after completion of the addition, the mixture was maintained for 2 hours to complete the polymerization. The resulting latex was added to a 0.25% aqueous sulfuric acid solution, and the polymer was subjected to acid precipitation, followed by dehydration, washing with water, and drying to recover the polymer in powder form. The reduced viscosity ηsp / c of the obtained thermoplastic polymer (A-1) was 0.38 L / g.

(Production of Rubber-Containing Polymer (A-2)) Into a reaction vessel were charged the following raw materials at 50 ° C. under a nitrogen atmosphere.
The polymerization was completed while stirring for 4 hours to obtain an elastic latex.

Butyl acrylate 77 parts styrene 22.7 parts allyl methacrylate 0.3 parts sodium dioctylsulfosuccinate 2.0 parts deionized water 300 parts potassium persulfate 0.3 parts disodium phosphate dodecahydrate 0.5 part Sodium hydrogen phosphate dihydrate 0.3 part 100 parts of this elastic latex (as solid content) is placed in a reaction vessel, and sufficiently purged with nitrogen while stirring.
The temperature was raised to 0 ° C, and an aqueous solution consisting of 0.0001 parts of ferric sulfate, 0.0002 parts of disodium ethylenediaminetetraacetate, 0.125 parts of sodium formaldehyde sulfoxylate, and 2 parts of deionized water was added. While maintaining the mixture at 60 ° C., a mixture consisting of 60 parts of methyl methacrylate, 0.05 part of n-octylmercaptan, and 0.125 part of t-butyl hydroperoxide was added dropwise over 2 hours.
Thereafter, the temperature was maintained for 2 hours to complete the polymerization. The obtained copolymer latex was dehydrated after salting out, washed with water and washed to obtain a rubber-containing polymer (A-2) in powder form.

(Production of Laminated Acrylic Resin Film) The thermoplastic polymer (A-1) 2 obtained as described above
Parts, 50 parts of a rubber-containing polymer (A-2), and a methyl methacrylate / methyl acrylate copolymer (methyl methacrylate / methyl acrylate = 90/10, which is a thermoplastic polymer (A-3); ηsp / c = 0.051 L / g)
48 parts of an acrylic resin (A) of 100 parts and whisker A (trade name, manufactured by Maruo Calcium Co., Ltd., material: calcium carbonate, average fiber length: 20) as a needle-like inorganic substance (B)
5 parts, mica (Mica M400, trade name) as an inorganic matting agent (C)
10 parts by Repco, average particle size about 10 μm, polyethylene glycol (average molecular weight 2) as plasticizer (D)
Ten parts were mixed with a Henschel mixer.

Then, using a 40 mmφ screw type extruder (L / D = 26), the cylinder temperature was 200 to 26.
The mixture was melt-kneaded at 0 ° C. and a die temperature of 250 ° C., and pelletized. After drying the obtained pellet, it was extruded using a T-die to obtain a laminated acrylic resin film of 15 μm. The evaluation results are shown in Table 1.

<Examples 2 to 8> The amount of the needle-like inorganic substance (B) added, the type and amount of the matting agent (C) and the amount of the plasticizer (D)
A film was obtained in the same procedure as in Example 1 except that the addition amount of was changed as shown in Table 1. The evaluation results are shown in Table 1.

<Comparative Example 1> A film was obtained in the same procedure as in Example 1 except that the acicular inorganic substance (B) was not used. The evaluation results are shown in Table 1. From the results of this comparative example, it can be seen that the shininess of the film after lamination is not improved unless the needle-like inorganic substance (B) is used.

<Comparative Examples 2 to 5> A film was prepared in the same manner as in Example 1 except that the addition amount of the matting agent (C) and the addition amount of the plasticizer (D) were changed as shown in Table 1. I got
The evaluation results are shown in Table 1.

[0053]

[Table 1]

[0054]

As described above, according to the present invention,
It is possible to provide an acrylic resin film for lamination, which has excellent matting properties even after lamination and has a sufficiently improved glossiness on the film surface, and a laminate having this film on the surface.

Continued on front page F-term (reference) 4F071 AA22 AA22X AA33 AA33X AA51 AA77 AA88 AB20 AB21 AB26 AB27 AD01 AE04 AE17 AE22 AF32 BA01 BB06 BC01 4F100 AA00A AH00A AK01A AK24A AK25A AN00AAT00B00 J02A02A04A00 BN11W BN12W BN20W CH01Z DE186 DE236 DJ047 DJ057 DK006 FA076 FD02Z FD207 GF00 GL00

Claims (2)

[Claims] 1. A thermoplastic polymer (A-
1) 0 to 20% by weight, rubber-containing polymer (A-2) 5-1
Acrylic resin (A) 100 containing, as main components, 00% by weight and 0 to 95% by weight of thermoplastic polymer (A-3)
Parts by weight, 0.5 to 15 parts by weight of needle-like inorganic substance (B), inorganic or organic crosslinked matting agent other than needle-like inorganic substance (C) 1 to 20
Laminated acryl formed from a resin mixture containing 180 parts by weight and a plasticizer (D) in an amount of 0 to 20 parts by weight and having a melt viscosity of 35,000 Pa · S or less at 180 ° C. and a shear rate of 6.1 sec ^−1. Resin film. (A-1) a thermoplastic polymer comprising 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of another vinyl monomer copolymerizable therewith;
Reduced viscosity of polymer (0.1 g of polymer
Thermoplastic polymer dissolved in 0 ml and measured at 25 ° C.) exceeds 0.1 L / g. (A-2) rubber-containing polymer alkyl acrylate 35 to 99.9% by weight;
It is obtained by polymerizing a monomer mixture comprising 0 to 64.9% by weight of another vinyl monomer copolymerizable therewith and 0.1 to 10% by weight of a copolymerizable crosslinkable monomer. In the presence of 100 parts by weight of an elastic copolymer having one or more structures, a monomer comprising 50 to 100% by weight of an alkyl methacrylate and 0 to 50% by weight of another vinyl monomer copolymerizable therewith. A rubber-containing polymer obtained by polymerizing 10 to 2,000 parts by weight of a body or monomer mixture. (A-3) Thermoplastic polymer 50 to 99% by weight of an alkyl methacrylate having an alkyl group having 1 to 4 carbon atoms, 1 to 50% by weight of an alkyl acrylate, and another vinyl copolymerizable therewith. A thermoplastic polymer comprising from 0 to 49% by weight of a monomer and having a reduced viscosity of 0.1 L / g or less (0.1 g of the polymer is dissolved in 100 ml of chloroform and measured at 25 ° C.). 2. A laminate having the acrylic resin film according to claim 1 on the surface.