Acrylic resin films and process for producing the same

An acrylic, resin film technology, applied in instruments, optics, optical components, etc., can solve the problems of dimensional instability, lack of heat resistance, etc., and achieve excellent transparency, good surface adhesion, and heat resistance. The effect of sexual height

Inactive Publication Date: 2007-04-11
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for example, when forming a hard coating or an anti-reflection film, shrinkage due to heat generated, dimensional instability, etc., cannot obtain sufficient heat resistance necessary for processing

Method used

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  • Acrylic resin films and process for producing the same
  • Acrylic resin films and process for producing the same
  • Acrylic resin films and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0200] [Measuring method of physical properties]

[0201] Hereinafter, the constitution and effects of the present invention will be described in more detail through examples. However, the present invention is not limited to the following examples. Before describing each example, methods for measuring various physical properties used in the examples will be described.

[0202] (1) Composition of each component

[0203] The acrylic resin film was dissolved in acetone, and the solution was centrifuged at 9000 rpm for 30 minutes to separate acetone-soluble components and acetone-insoluble components. The acetone-soluble component was dried under reduced pressure at 60° C. for 5 hours, and each component unit was quantified to specify the component composition of the acrylic resin.

[0204] By proton nuclear magnetic resonance ( 1 H-NMR) method to quantify each component unit. exist 1 In the H-NMR method, the copolymer composition can be determined from the integral ratio of...

reference example

[0259] The additive (NaOCH 3 ) was mixed therein, using a twin-screw extruder (TEX30 (manufactured by Nippon Steel Works, L / D=44.5)), nitrogen was purged from the hopper at an amount of 10 L / min, while the screw rotation speed was 100 rpm, the raw material The intramolecular cyclization reaction was carried out at a supply rate of 5 kg / h and a cylinder temperature of 290° C. to obtain a granular acrylate resin (A1). The compositional ratio of the glutaric anhydride unit in 100 mass parts of this acrylate resin (A1) was 31 mass parts. Reference example (2) Acrylic resin (A2)

[0260] Except that the polymethyl methacrylate-polymethacrylic acid copolymer (MMA / MAA=72 / 28) obtained by the suspension polymerization method was used as the acrylate resin, the same operation was performed as in Reference Example 1 to obtain the acrylate resin (A2 ). The composition ratio of the glutaric anhydride unit of this acrylate resin was 23 mol%.

[0261] Reference Example (3) Acrylic Elasto...

Embodiment 1

[0265] The 75 parts by mass acrylic resin (A1) obtained in the above-mentioned reference example (1) and the acrylic elastomer particle (B1) obtained in the reference example (3) were mixed in a composition ratio of 25 parts by mass, and a double-screw was used to An extruder (TEX30 (manufactured by Nippon Steel Works, L / D=44.5)) was kneaded at a screw speed of 150 rpm and a cylinder temperature of 280° C. to obtain a granular acrylate resin.

[0266] Subsequently, using a 65mmφ single-screw extruder with a vent hole, the particles dried at 100°C for 3 hours were extruded through a T die (set temperature 250°C), so that both sides were completely attached to the polishing roller Cooling was carried out to obtain an unstretched acrylic resin film. Using a linear simultaneous biaxial tenter, the acrylic resin film was stretched 1.5 times in the longitudinal direction and 1.5 times in the transverse direction at a preheating temperature of 130°C and a stretching temperature of 14...

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PUM

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Abstract

[PROBLEMS] To provide: a novel, industrially useful acrylic resin film excellent in all of transparency, weatherability, heat resistance, and toughness, in view of the fact that there has been no acrylic resin film having such properties; an acrylic resin film which comprises the acrylic resin film having, e.g., a hard coating layer formed on at least one side of the film and further having an antireflection film formed on at least one side of the film; and an optical filter comprising this film. [MEANS FOR SOLVING PROBLEMS] The former acrylic resin film comprises an acrylic resin having units of glutaric anhydride and acrylic elastomer particles incorporated in the resin, and has a total light transmittance of 91% or higher, a haze of 1.5% or lower, a value of the number of folding operations of 20 or larger, and a degree of thermal shrinkage less than 5% in at least one of the machine direction and the transverse direction in a thermal shrinkage test.

Description

technical field [0001] The present invention relates to a novel and industrially useful acrylic resin film excellent in transparency, weather resistance, heat resistance and toughness. [0002] More specifically, the acrylic resin film of the present invention relates to surface skins used for display materials such as flat display panels, interior and exterior materials for vehicles, electrification products, inner layers and exterior materials for building materials, etc. Acrylic resin film with excellent transparency, weather resistance, heat resistance and toughness and acrylic resin with excellent transparency, weather resistance, heat resistance and toughness for skin protection of polycarbonate and vinyl chloride film. Background technique [0003] Acrylic resin films are used for optical materials such as sheets or films for liquid crystal displays, light guide plates, interior and exterior materials for vehicles, and exterior materials for vending machines because ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/00C08F8/48C08J5/18C08L33/04C08L33/06G02B1/04
CPCC08L33/064G02B1/04C08L33/04C08L33/06C08L2666/04C08J5/18C08L33/00
Inventor 前川茂俊森山英树堀内光弘佃明光
Owner TORAY IND INC
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