JP2000072894A - Acrylic resin film for laminate and laminated material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare an acrylic resin film keeping excellent matte state even after lamination, free from luster and useful for wallpaper or the like, by forming a specific resin mixture in the form of a film. SOLUTION: The objective film is formed with a resin mixture having a melt viscosity of <=35,000 Pa.s at 180 deg.C and a shear rate of 6.1 sec-1 and produced by compounding 1-20 pts.wt. of an inorganic crosslinking and delustering agent or the like to 100 pts.wt. of an acrylic resin composition composed of (A) 0.1-20 wt.% of a thermoplastic polymer composed of methyl methacrylate or the like, and having a reduced viscosity of >0.1 L/g (measured at 25 deg.C in the form of a solution produced by dissolving 0.1 g of the polymer in 100 mL of chloroform) and (B) 6-99.9 wt.% of a rubber-containing polymer having an average particle diameter of 0.15-0.5 μm and produced by the polymerization of an alkyl methacrylate or the like, in the presence of a crosslinked elastic copolymer having one or more layered structure and obtained by polymerizing an alkyl acrylate or the like. (the sum of the components A, B or the like, is 100 wt.%) and containing >=5 wt.% of the above crosslinked elastic copolymer in the total acrylic resin composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acrylic resin film for lamination which shows good matting properties after lamination to a substrate, and a laminate having the film on the surface. Although it can be applied to all building material applications, it is particularly suitable for wallpaper.

[0002]

2. Description of the Related Art The performance required of a laminate film for wallpaper mainly includes stain resistance to a plasticizer, matt design, and the like.

[0003] Vinyl chloride resin is often used as a base material for wallpaper. Vinyl chloride resin is excellent in price and processability, but contains a large amount of plasticizer. Therefore, there is a problem that the plasticizer migrates and the surface is contaminated after many years of use, and a laminating film may be stuck to the surface to prevent this.

With respect to the matt design, there is a tendency that the higher the mattness, the higher the classiness and the preference. Therefore, when laminating a film for wallpaper, a matte film is generally used. 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 .

For example, a method for improving the crimping property after lamination with an acrylic resin film is disclosed in Japanese Patent Application Laid-Open No. 06-0731.
No. 99, JP-A-06-073200 and the like.

[0006]

However, Japanese Patent Application Laid-Open No. 06-073199 and Japanese Patent Application Laid-Open No. 06-0732
In the acrylic resin film described in Japanese Patent Publication No. 00, although matting properties were obtained, shine was observed on the film surface after lamination.

An object of the present invention is to obtain an acrylic resin film for lamination which has excellent matting properties even after lamination and has no shine.

[0008]

That is, the gist of the present invention resides in that 1 to 20 parts by weight of an inorganic or organic crosslinked matting agent (B) is blended with 100 parts by weight of the following acrylic resin composition (A). , And 180 ° C., 6.1 sec ⁻¹ shear rate
Acrylic resin film for lamination obtained by forming a resin mixture having a melt viscosity of not more than 35,000 Pa · s in a film and a laminate thereof.

Acrylic resin composition (A) The following thermoplastic polymer (A-1) 0.1 to 20
% By weight, rubber-containing polymer (A-2) 6 to 99.9% by weight
And the sum of 0 to 93.9% by weight of the thermoplastic polymer (A-3) is 100% by weight, and the rubber-containing polymer (A-) is contained in 100% by weight of the acrylic resin composition (A).
Acrylic resin composition (A) wherein the proportion of the crosslinked elastic copolymer contained in 2) is 5% by weight or more.

(A-1) Thermoplastic polymer: 50 to 100% by weight of methyl methacrylate, 0 to 50% by weight of at least one other copolymerizable vinyl monomer, and the reduced viscosity of the polymer ( 0.1 g of the polymer was dissolved in 100 ml of chloroform and measured at 25 ° C.).
g of thermoplastic polymer.

(A-2) Rubber-containing polymer: A monomer comprising 35 to 100% by weight of an alkyl acrylate and 0 to 65% by weight of at least one other copolymerizable vinyl monomer or a mixture thereof. Parts by weight,
Crosslinking elasticity having one or more layers obtained by polymerizing a monomer mixture comprising 0.1 to 10 parts by weight of a crosslinkable monomer (based on 100 parts by weight of a monomer or a mixture thereof) A monomer comprising 50 to 100% by weight of an alkyl methacrylate in the presence of 100 parts by weight of a copolymer and at least one other vinyl monomer copolymerizable at 0 to 50% by weight or a mixture thereof at 10 to 2000%; A rubber-containing polymer obtained by polymerizing parts by weight (based on 100 parts by weight of a crosslinked elastic copolymer) and having an average particle size of 0.15 to 0.5 μm as observed by a transmission electron microscope.

(A-3) Thermoplastic polymer: 50 to 99% by weight of an alkyl methacrylate having an alkyl acid having 1 to 4 carbon atoms, 1 to 50% by weight of an alkyl acrylate and another copolymerizable vinyl It is obtained by polymerizing at least one type of monomer, 0 to 49% by weight, and its reduced viscosity (0.1 g of polymer is added to
A thermoplastic polymer which is dissolved in 0 ml and measured at 25 ° C.) is 0.1 L / g or less.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The composition of the acrylic resin composition (A) as a base used in the present invention and the production method thereof will be described.

The acrylic resin composition (A) contains 0.1 to 20% by weight of a thermoplastic polymer (A-1) and a rubber-containing polymer (A).
-2) 6 to 99.9% by weight and a thermoplastic polymer (A-
3) the sum of 0-93.9% by weight is 100% by weight;
In addition, the proportion of the crosslinked elastic copolymer contained in the rubber-containing polymer (A-2) in 100% by weight of the acrylic resin composition (A) is 5% by weight or more. In the following, (A-1)
Each polymer of (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 at least one other copolymerizable vinyl monomer. Viscosity (0.1 g of polymer in chloroform 100
(measured at 25 ° C. in 0.1 ml / ml) is more than 0.1 L / g, and is a component that plays an important role in film formability. The reduced viscosity of the thermoplastic polymer (A-1) is important. If the reduced viscosity is 0.1 L / g or less, a film having good thickness accuracy will not be obtained. The reduced viscosity is usually 0.1.
More than 1 L / g and 2 L / g or less, preferably 0.2 to
1.2 L / g.

In the thermoplastic polymer (A-1), as a vinyl monomer polymerizable with methyl methacrylate, alkyl acrylate, alkyl methacrylate, an aromatic vinyl compound, and a vinyl cyanide compound may be used. Two or more types can be used in combination.

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

The rubber-containing polymer (A-2) has an effect of imparting excellent elongation and impact resistance to the resin composition, and is essential for improving the matting property, which is an object of the present invention. It is also an important component.

The rubber-containing polymer (A-2) is a monomer composed of 35 to 100% by weight of an alkyl acrylate and 0 to 65% by weight of at least one other copolymerizable vinyl monomer. 100 parts by weight of a mixture and 0.1 to 10 parts by weight of a crosslinkable monomer (monomer or a mixture thereof 100
50-100% by weight of alkyl methacrylate in the presence of 100 parts by weight of a crosslinked elastic copolymer having one or more layers obtained by polymerizing a monomer mixture comprising And at least 1 to 50% by weight of a vinyl monomer copolymerizable therewith or 10 to 2,000 parts by weight of a mixture thereof (based on 100 parts by weight of the crosslinked elastic copolymer). It is obtained by polymerizing in one or more stages, and has an average particle size of 0.15 to 0.5 μm as observed with a transmission electron microscope.

As the alkyl acrylate used herein, those having a known alkyl group having 1 to 8 carbon atoms are used. Of these, butyl acrylate and acrylic acid-
2-ethylhexyl and the like are preferred.

The alkyl acrylate is 35 to 10
It is used in the range of 0% by weight. If it is less than 35% by weight, the resin composition will have insufficient elongation, and it will be difficult to mold it into a film. The preferred use range is 50 to 90% by weight.
It is.

In obtaining a crosslinked elastic copolymer, 65%
Other copolymerizable vinyl monomers can be copolymerized in the range of not more than% by weight. As the vinyl monomer used here, methyl methacrylate, butyl methacrylate, alkyl methacrylates such as cyclohexyl methacrylate, styrene, acrylonitrile and the like are preferable,
These can be used alone or in combination of two or more.

Further, a crosslinkable monomer is used. The crosslinkable monomer used is not particularly limited, but is preferably ethylene glycol dimethacrylate, butanediol dimethacrylate, allyl acrylate, allyl methacrylate, diallyl phthalate, triallyl cyanurate,
Examples include triallyl isocyanurate, divinylbenzene, diallyl maleate, trimethylol triacrylate, allyl cinnamate, and the like, and these can be used alone or in combination.

The crosslinking monomer is used in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the monomer (mixture). When the addition amount is less than 0.1 part by weight, the amount of the monomer grafted to the elastic copolymer becomes extremely small, and the moldability in forming a film becomes insufficient. Use in excess of 10 parts by weight is not particularly problematic, but does not produce an effect commensurate with the amount added. A preferred use range is from 0.3 to 7 parts by weight.

The crosslinked elastic copolymer may have a structure of one layer or two or more layers. In the case of a structure having two or more layers,
It is sufficient that the content of the alkyl acrylate as a whole of the crosslinked elastic copolymer is 35% by weight or more. For example, in the case of a hard core structure, the content of the first layer alkyl acrylate may be 35% by weight or less.

As the monomer to be grafted to the crosslinked elastic copolymer, 50% by weight or more of alkyl methacrylate is used. Specifically, methyl methacrylate, ethyl methacrylate, butyl methacrylate, methacrylic acid 2
-Ethylhexyl, cyclohexyl methacrylate and the like. In addition, at least one of the other copolymerizable vinyl monomers is used in an amount of 50% by weight or less, and is not particularly limited. Specifically, alkyl acrylates such as methyl acrylate, butyl acrylate, and cyclohexyl acrylate; Styrene, acrylonitrile and the like can be mentioned, and these can be used alone or in combination of two or more.

The monomer mixture to be grafted is used in an amount of 10 to 2000 parts by weight, preferably 20 to 200 parts by weight, based on 100 parts by weight of the crosslinked elastic copolymer, and can be polymerized in at least one stage.

The rubber-containing polymer (A-2) in the present invention comprises:
Obtained by ordinary emulsion polymerization. In addition, you may use a chain transfer agent at the time of superposition | polymerization, other polymerization auxiliary agents, etc. Known chain transfer agents can be used, but mercaptans are preferred. The crosslinked elastic copolymer can be polymerized at once, but can be polymerized in two or more stages as necessary, and can have a multilayer structure.

Further, the average particle size of the rubber-containing polymer is 0.1.
It needs to be in the range of 15 to 0.5 μm. 0.
If it is less than 15 μm, the mattability when formed into a film is insufficient. If it exceeds 0.5 μm, not only cannot it be produced at low cost, but also it approaches the particle size of the inorganic or organic crosslinked matting agent, so that the effect is reduced and the matting properties become insufficient. The average particle diameter of the rubber-containing polymer is an average particle diameter observed with a transmission electron microscope.

The addition of a rubber-containing polymer having an average particle size of 0.15 to 0.5 μm to improve matting properties is due to the fact that the surface roughness is smaller than the surface irregularities formed by inorganic or organic crosslinked matting agents. This is because unevenness can be formed. In particular,
When an inorganic or organic crosslinked matting agent is used, the glossiness of the film cannot be improved even if the amount of the matting agent is increased, but a rubber-containing polymer having an average particle size of 0.15 to 0.5 μm is formed. Due to the fine surface irregularities, it is possible to eliminate the shiny feeling.

The rubber-containing polymer (A-2) is used in the acrylic resin composition (A) in the range of 6 to 99.9% by weight, and the rubber-containing polymer (A-2) is used in the acrylic resin composition (A) in 100% by weight. It is necessary that the proportion of the crosslinked elastic copolymer contained in the polymer (A-2) is 5% by weight or more. If the proportion of the crosslinked elastic copolymer contained in the acrylic resin composition (A) is less than 5% by weight, the film-forming property in forming a film becomes poor. Even if a film can be formed, the mattability becomes poor, and the shiny feeling cannot be improved. From the viewpoint of film forming properties and matting properties, the crosslinked elastic copolymer is an acrylic resin composition (A)
Preferably, the content is 10% by weight or more.

The thermoplastic polymer (A-
3) is 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 at least one of other vinyl monomers copolymerizable therewith. The reduced viscosity of the polymer (0.1 g of the polymer dissolved in 100 ml of chloroform and measured at 25 ° C.) is 0.1 L /
g or less.

As the alkyl methacrylate used in the thermoplastic polymer (A-3), methyl methacrylate, ethyl methacrylate, butyl methacrylate and the like can be used, but methyl methacrylate is most preferred. As alkyl acrylate, methyl acrylate,
Ethyl acrylate, butyl acrylate and the like can be used.
The alkyl acrylate is used in the range of 1 to 50% by weight. Further, another vinyl monomer copolymerizable in the range of 49% by weight or less can be used alone or in combination of two or more kinds.

The method for producing the thermoplastic polymer (A-3) is as follows:
Although not particularly limited, polymerization can be carried out by a usual method such as suspension polymerization, emulsion polymerization, or bulk polymerization. In addition, you may use a chain transfer agent, other polymerization auxiliary agents, etc. at the time of superposition | polymerization. Known chain transfer agents can be used, but mercaptans are preferred.

The thermoplastic polymer (A-3) is used in the acrylic resin composition (A) in the range of 0 to 93.9% by weight, preferably in the range of 1 to 93.9% by weight. .

Next, an inorganic or organic crosslinked matting agent (B)
Will be described. Known organic and inorganic matting agents can be used.

The organic crosslinked matting agent has an average particle size of 1 to 1.
Resin fine particles having a crosslinked structure of 20 μm are generally used. The organic crosslinked matting agent is preferably an acrylic resin from the viewpoint of transparency. Examples of the inorganic matting agent include mica fine particles and talc fine particles.

The amount of the inorganic or organic crosslinked matting agent is 1
Although it is in the range of 20 to 20 parts by weight, if it 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 remarkably reduced. The preferred amount is in the range of 5 to 15 parts by weight.

As the plasticizer (C) used in the present invention, known plasticizers can be used. Polyalkylene glycol is preferred from the viewpoint of plasticizing effect, film appearance, and economy,
Among them, polyethylene glycol is particularly preferred.

The amount of the plasticizer (C) is in the range of 0 to 20 parts by weight, preferably 1 to 15 parts by weight. Plasticizer (C)
Can be used in the range of 20 parts by weight, and if it exceeds 20 parts by weight, the pellets will be extremely blocked during drying, making film formation difficult. Even if a film can be formed, the heat resistance becomes poor.

180 ° C. of the resin mixture of (A) and (B)
The melt viscosity at a shear rate of 6.1 sec ^-1 is 35000 Pa
If the value is not more than s, sufficient matting properties are exhibited after lamination to a substrate without adding a plasticizer. (A)
Of the resin mixture of (B) and 180 ° C.,
When the melt viscosity at c ^-1 exceeds 35000 Pa · s, it is necessary to add a plasticizer.

The melt viscosity of the acrylic resin film for lamination in the present invention in the form of pellets must be 35,000 Pa · s or less at 180 ° C. and 6.1 sec ⁻¹ shear rate. Preferably 30,000 Pa
s or less. On the other hand, if the melt viscosity exceeds 35000 Pa · s, the crimping property during lamination becomes poor, and good matting properties cannot be exhibited after lamination.

The acrylic resin film for lamination of the present invention may contain, if necessary, general compounding agents such as stabilizers, lubricants, processing aids, impact-resistant aids, foaming agents, fillers, coloring agents,
An ultraviolet absorber or the like can be included.

As the method for producing the acrylic resin film for lamination used in the present invention, any method such as a T-die method, a melt extrusion method such as an inflation method, and a calendar method may be used. The method is preferred.

Further, a laminate having an acrylic resin film for lamination as a surface layer can be produced. As the substrate to be laminated, a known thermoplastic resin can be used, but for wallpaper, polyvinyl chloride, polypropylene, and polyethylene terephthalate are often used from the viewpoint of processability and cost. Further, it is possible to use an adhesive to bond a base material such as a thermosetting resin, a steel plate, a wood, a paper, etc. which is not heat-sealed.

As a method for producing a laminate using an acrylic resin film for lamination, a known lamination method can be adopted without any particular limitation. In the case of wallpaper, a heat lamination method using an embossed heating roll is used. General.

In the laminate of the present invention, an intermediate layer may be provided between the acrylic resin film for lamination and the substrate, if necessary.

[0048]

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) Matting property According to ASTM-D523, manufactured by Murakami Color Research Laboratory,
The surface gloss was measured at 60 degrees using a gloss meter GM-26D.

(2) Matting properties after lamination The obtained film was laminated with a soft vinyl chloride resin film having a thickness of 100 μm by using an embossed laminating roll.
Thermal lamination was performed under the conditions of 0 ° C. and 30 kg / cm ² , and the obtained laminate was measured according to the method (1).

(3) Melt Viscosity of Pellets The melt viscosity of the pellets was measured at 180 ° C. and 6.1 sec shear rate using a Capillograph manufactured by Toyo Seiki Seisaku-sho, Ltd.
It was measured under the condition of c- ¹ .

(4) Film Forming Property and Surface Appearance As a guide for evaluating the film forming property and surface appearance, the film forming state at the time of film forming and the surface appearance of the film after lamination (particularly, the glossiness of the film was visually evaluated). ○-no shine, x-shine).

(5) Reduced Viscosity, Intrinsic Viscosity The measurement of the reduced viscosity and the intrinsic viscosity was performed by A
It measured using chloroform as a solvent using a VL-2C automatic viscometer. The reduced viscosity is 10 chloroform.
The measurement was performed by dissolving 0.1 g of the sample in 0 ml.

(6) Average particle diameter of rubber-containing polymer The obtained film was cut into an appropriate size, and the cut piece was placed in a 0.5% by weight aqueous ruthenium tetroxide solution at room temperature for 15 minutes.
After soaking for a time, the crosslinked elastic copolymer portion was dyed. Further, the sample was cut into a thickness of about 70 nm using a microtome, and photographed with a transmission electron microscope. From this photograph, 50 dyed crosslinked elastic copolymer parts were randomly selected, the particle diameter of each was calculated, and the average value was defined as the average particle diameter.

Example 1 (A-1) Production of Thermoplastic Polymer A reaction vessel was charged with 200 parts of ion-exchanged water purged with nitrogen, and 1 part of an emulsifier, potassium oleate, and 0.3 part of potassium persulfate. . Subsequently, 40 parts of methyl methacrylate, 10 parts of n-butyl acrylate, 0.0 part of n-octyl mercaptan 0.0
The mixture was stirred at 65 ° C. for 3 hours in a nitrogen atmosphere to complete the polymerization. Subsequently, methyl methacrylate 48
Of a monomer mixture consisting of 2 parts of n-butyl acrylate and 2 parts of n-butyl acrylate, and the mixture was maintained for 2 hours after completion of the dropwise addition to complete the polymerization. The obtained 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. Reduced viscosity η of the obtained polymer
sp / c was 0.38 L / g.

(A-2-1) Production of Rubber-Containing Polymer Raw materials in the following proportions were charged into a reaction vessel, and the polymerization was completed while stirring at 50 ° C. for 4 hours in a nitrogen atmosphere.
A crosslinked elastic copolymer was obtained.

Butyl acrylate 77 parts styrene 22.7 parts allyl methacrylate 0.3 parts sodium dioctyl sulfosuccinate 0.9 parts deionized water 300 parts potassium persulfate 0.3 parts disodium phosphate dodecahydrate 0.5 part 0.3 parts of sodium hydrogen phosphate dihydrate 100 parts of this crosslinked elastic copolymer (as solid content) is placed in a reaction vessel, and sufficiently purged with nitrogen while stirring.
And an aqueous solution consisting of 0.0001 part of ferric sulfate, 0.0002 part of disodium ethylenediaminetetraacetate, 0.125 part of sodium formaldehyde sulfoxylate and 2 parts of deionized water was added. The mixture consisting of 60 parts of methyl methacrylate, 0.05 part of n-octyl mercaptan and 0.125 part of t-butyl hydroperoxide was added dropwise over 2 hours while maintaining
The polymerization was completed by holding for a time. The obtained copolymer latex was dehydrated after salting out, washed with water and washed to obtain a rubber-containing polymer (A-2-1) in powder form. The average particle size of the crosslinked elastic copolymer was 0.21 μm.

As described above, 2 parts of the thermoplastic polymer (A-1) and 50 parts of the rubber-containing polymer (A-2-1) were obtained.
Part, a thermoplastic polymer (A-3) which is a methyl methacrylate / methyl acrylate copolymer (methyl methacrylate /
Methyl acrylate = 90/10, ηsp / c = 0.051
(L / g) 100 parts of an acrylic resin (A) consisting of 48 parts, 10 parts of mica as an inorganic matting agent (B), and 10 parts of polyethylene glycol as a plasticizer (C) were mixed with a Henschel mixer. Then, using a 40 mmφ screw type extruder (L / D = 26), the cylinder temperature was 20
The mixture was melt-kneaded at 0 to 260 ° 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 15 μm film. The evaluation results are summarized in Table 1.

Example 2-8 Rubber-Containing Polymer (A-2)
A film was obtained in the same procedure as in (Example 1) except that the addition amount of -1), the addition amount of the inorganic matting agent (B), and the addition amount of the polyalkylene glycol were changed as shown in Table 1. . Table 1 summarizes the evaluation results of the obtained films.

Comparative Example 1 The procedure was the same as in Example 1 except that the rubber-containing copolymer (A-2-1) was changed to (A-2-2) shown below. A film was obtained. The evaluation results are summarized in Table 1. From this comparative example, it can be seen that if the average particle size of the crosslinked elastic copolymer is 0.15 μm or less, good matting properties cannot be obtained.

(A-2-2) Production of Rubber-Containing Polymer Raw materials in the following proportions were charged into a reaction vessel, and the polymerization was completed while stirring at 50 ° C. for 4 hours in a nitrogen atmosphere.
A crosslinked elastic copolymer was obtained.

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 0.3 parts of sodium hydrogen phosphate dihydrate 100 parts of this crosslinked elastic copolymer (as solid content) is placed in a reaction vessel, and sufficiently purged with nitrogen while stirring.
And an aqueous solution consisting of 0.0001 part of ferric sulfate, 0.0002 part of disodium ethylenediaminetetraacetate, 0.125 part of sodium formaldehyde sulfoxylate and 2 parts of deionized water was added. The mixture consisting of 60 parts of methyl methacrylate, 0.05 part of n-octyl mercaptan and 0.125 part of t-butyl hydroperoxide was added dropwise over 2 hours while maintaining
The polymerization was completed by holding for a time. The obtained copolymer latex was dehydrated after salting out, washed with water and washed to obtain a rubber-containing polymer (A-2-2) in powder form. The average particle size of the crosslinked elastic copolymer was 0.11 μm.

Comparative Example 2-6 The procedure of Example 1 was repeated except that the addition amount of the rubber-containing polymer (A-2-1), the mica amount, or the polyalkylene glycol was changed as shown in Table 1. A film was obtained in the same procedure as in Example 1. The evaluation results are summarized in Table 1.

[Table 1]

Claims (2)

[Claims] 1. The following acrylic resin composition (A) 100
Inorganic or organic crosslinked matting agent (B) 1 based on parts by weight
A laminated acrylic resin film obtained by forming a resin mixture having a melt viscosity of 35,000 Pa · s or less at 180 ° C. and a shear rate of 6.1 sec ^{−1, in} which no more than 20 parts by weight are blended. Acrylic resin composition (A) Thermoplastic polymer (A-1) 0.1 to 20 shown below
100% by weight of the rubber-containing polymer (A-2) 6-99.9% by weight and the thermoplastic polymer (A-3) 0-93.9% by weight, and the acrylic resin composition (A) A rubber-containing polymer (A-
An acrylic resin composition wherein the proportion of the crosslinked elastic copolymer contained in 2) is 5% by weight or more. (A-1) Thermoplastic polymer Consists of 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of at least one other copolymerizable vinyl monomer, and has a reduced viscosity of the polymer (Polymer 0). .1 g in 100 ml of chloroform and measured at 25 ° C.)
g of thermoplastic polymer. (A-2) rubber-containing polymer: 35 to 100% by weight of an alkyl acrylate, 100 to 100 parts by weight of a monomer comprising at least one 0 to 65% by weight of another copolymerizable vinyl monomer or a mixture thereof. Crosslinking having a structure of one or more layers obtained by polymerizing a monomer mixture consisting of 0.1 to 10 parts by weight of a crosslinkable monomer (based on 100 parts by weight of the monomer or a mixture thereof) A monomer comprising at least one of 0 to 50% by weight of at least one other vinyl monomer copolymerizable with 50 to 100% by weight of an alkyl methacrylate in the presence of 100 parts by weight of an elastic copolymer, or a mixture thereof; A rubber-containing polymer obtained by polymerizing 2,000 parts by weight (based on 100 parts by weight of a crosslinked elastic copolymer) and having an average particle diameter of 0.15 to 0.5 μm as observed by a transmission electron microscope. (A-3) Thermoplastic polymer 50 to 99% by weight of alkyl methacrylate having an alkyl acid having 1 to 4 carbon atoms, 1 to 50% by weight of alkyl acrylate and another copolymerizable vinyl monomer And the reduced viscosity of the polymer (0.1 g of the polymer is
a thermoplastic polymer having a solubility of 0.1 L / g or less (measured at 25 ° C). 2. A laminate having the laminated acrylic resin film of claim 1 on the surface.