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Acrylic resin film

An acrylic resin, acrylic technology, applied in the field of acrylic resin film, can solve the problems of poor resistance, high cost, poor water resistance, etc., and achieve the effects of excellent resistance, low manufacturing cost, chemical resistance and water resistance

Active Publication Date: 2015-12-02
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The acrylic resin films described in these prior art documents have the following disadvantages: poor resistance to chemicals such as sunscreen lotions, creams, insect repellents, poor water resistance, or high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0156] The present invention will be described more specifically by showing Examples and Comparative Examples below, but the present invention is not limited by them. In addition, the measurement or evaluation of the physical property value in the Example and the comparative example was performed by the following method.

[0157] (average particle diameter of cross-linked rubber particles)

[0158] The measurement was performed using a laser diffraction / scattering type particle size distribution analyzer LA-910 manufactured by HORIBA CO., LTD.

[0159] (Weight average molecular weight (Mw), molecular weight distribution (Mw / Mn) of acrylic thermoplastic resin)

[0160] In the high-performance liquid chromatography apparatus, "GPC-802", "HSG-30", "HSG-50" manufactured by Shimadzu Corporation and Showa Denko Co., Ltd. were used as columns for gel permeation chromatography (GPC). "ShodexA-806" was used after being connected in series, a differential refractive index detector was...

reference example 1

[0183] [Manufacture of Crosslinked Rubber Particles (A1)]

[0184] (1) Add 1050 parts by mass of ion-exchanged water, 0.3 parts by mass of polyoxyethylene tridecyl ether sodium acetate and carbonic acid Sodium was 0.7 parts by mass, and the inside of the reactor was fully replaced with nitrogen. Then the internal temperature was adjusted to 80°C. 0.25 parts by mass of potassium persulfate was thrown in there, and stirred for 5 minutes. There, 245 parts by mass of a monomer mixture consisting of 95.4 mass % of methyl methacrylate, 4.4 mass % of methyl acrylate, and 0.2 mass % of allyl methacrylate was continuously added dropwise thereto over 60 minutes. After the dropwise addition was completed, a polymerization reaction was carried out for 30 minutes so that the polymerization conversion rate became 98% or more.

[0185] (2) Then, 0.32 parts by mass of potassium persulfate was injected into the same reactor, and stirred for 5 minutes. Then, 315 parts by mass of a monomer ...

reference example 2

[0187] [Manufacture of Resin Polymer (B1)]

[0188] A resin polymer (B1) having a weight average molecular weight of 80,000 was produced by bulk polymerizing a monomer composed of 100% by mass of methyl methacrylate. Table 2 shows the physical property values ​​and the like of the resin polymer (B1).

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Abstract

According to the present invention, an acrylic resin film is obtained by a method including bulk polymerizing methyl methacrylate and an acrylic acid alkyl ester, obtaining an acrylic thermoplastic resin component having more than 99 mass% methyl methacrylate units and 1 mass% or less acrylic acid alkyl ester units, extruding a resin composition containing 70-95 mass% of the acrylic thermoplastic resin component and 5-30 mass% of a crosslinked rubber particle component from a T die, and then molding the extrudate to a thickness of 20-300 μm without a bank.

Description

technical field [0001] The present invention relates to an acrylic resin film. More specifically, the present invention relates to an acrylic resin film useful as a decorative (decorative) film, etc., excellent in chemical resistance and water resistance, and low in production cost. Background technique [0002] Many products are processed by coating the surface to improve the appearance, so-called decoration treatment. Methods such as insert molding, in-mold forming, vacuum forming, and vacuum pressure forming are used for decoration. An acrylic resin film is known as a film used for decorating. [0003] As an acrylic resin film, for example, Patent Document 1 discloses an acrylic film or sheet composed of a resin composition in which 50 to 99% by weight of methyl methacrylate and 50% by weight of alkyl acrylate are dispersed. 95-50% by weight of the acrylic resin copolymerized by ~1% by weight, and 5-50% by weight of the multi-layer structure acrylic polymer including t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08J5/18C08L51/00B29C48/30
CPCC08L33/12C08F220/14C08F220/1804C08J5/18C08J2333/12
Inventor 前田香织辻本拓哉干场孝男中原淳裕
Owner KURARAY CO LTD
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