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Resin composition and film formed from same

一种树脂组合物、丙烯酸树脂的技术，应用在树脂组合物和由其形成的膜领域，能够解决透明性在实用不能满足、相容性低、不能提供透明性、耐化学药品性等问题，达到工业效果显著、表面硬度优异的效果

Active Publication Date: 2018-06-08
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, it is disclosed in Patent Document 4 that compositions of polycarbonate resins and acrylic resins containing fluorinated monomers become transparent, but since polycarbonate resins contain aromatics, these compositions suffer from poor weather resistance, light There are problems in optical properties such as elastic modulus
In Patent Document 5, a transparent resin composition is obtained by modifying an acrylic resin, but since the acrylic resin contains aromatics, there are also problems in optical properties such as weather resistance and photoelastic coefficient of the composition.
In addition, isosorbide-based polycarbonate has low compatibility with PMMA, and when it is formed into a film, the transparency is not satisfactory for practical use.
Therefore, it has not been possible to provide a resin composition or film of isosorbide-based polycarbonate having excellent transparency, chemical resistance, and surface hardness and having a low photoelastic coefficient.

Method used

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  • Resin composition and film formed from same
  • Resin composition and film formed from same
  • Resin composition and film formed from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0190]

[0191] 351 parts of isosorbide (hereinafter referred to as ISS), 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro (5,5 ) 313 parts of undecane (hereinafter referred to as SPG), 750 parts of diphenyl carbonate (hereinafter referred to as DPC) and 0.8×10 tetramethylammonium hydroxide as catalyst -2 parts with barium stearate 0.6 x 10 -4 The parts were melted by heating to 200°C under nitrogen atmosphere. Then, the temperature was raised to 220° C. over 30 minutes, and the degree of reduced pressure was adjusted to 20.0 kPa. Then, the temperature was raised to 240° C. over 30 minutes, and the degree of reduced pressure was adjusted to 10 kPa. After maintaining this temperature for 10 minutes, the degree of reduced pressure was reduced to 133 Pa or less over 1 hour. After completion of the reaction, it was discharged from the bottom of the reaction tank under nitrogen pressure, and was cut with a granulator while cooling in a water tank to obtain pellets (...

Embodiment 2

[0197] Except having extruded with PC1:PMMA1=90 / 10 in the mixing weight ratio, the operation similar to Example 1 was performed and the same evaluation was performed. The results are described in Table 1.

Embodiment 3

[0199] Exactly the same operation as in Example 1 was performed except that 451 parts of ISS, 104 parts of SPG, and 750 parts of DPC were used as raw materials, and the mixing weight ratio was PC2:PMMA1=80 / 20, and the same evaluation was performed. The results are described in Table 1.

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Abstract

Provided is a resin composition which contains a polycarbonate resin (A) having main repeating units that include a unit (a-1) represented by formula (a-1) and a unit (a-2) represented by formula (a-2) (wherein W represents an alkylene group having 1-20 carbon atoms or a cycloalkylene group having 6-20 carbon atoms; R represents a branched or linear alkyl group having 1-20 carbon atoms or an optionally substituted cycloalkyl group having 6-20 carbon atoms; and m represents an integer of 0-10) and an acrylic resin (B), and wherein the weight ratio of the polycarbonate resin to the acrylic resinis from 40:60 to 99:1. This resin composition exhibits a single glass transition temperature within the range from 90 DEG C to 150 DEG C, and has excellent transparency, chemical resistance, surfacehardness and heat resistance, while having low photoelastic coefficient.

Description

technical field [0001] The present invention relates to a resin composition which is excellent in transparency, chemical resistance, surface hardness, and heat resistance and has a low photoelastic coefficient, and a film formed therefrom. Background technique [0002] Conventionally, methacrylic resin, polycarbonate resin (hereinafter sometimes referred to as PC) and the like are known as transparent resins, and they are widely used in electrical and electronic parts, optical parts, automobile parts, mechanical parts, etc. in the form of molded products and films. field is used. [0003] Methacrylic resins such as polymethyl methacrylate (hereinafter sometimes referred to as PMMA) have high transparency and hard surface hardness (pencil hardness H to 3H), and are often used as optical materials such as lenses and optical fibers. However, there is a problem that the resistance to daily-use chemicals such as sunscreens is low, and their use in applications where human hands ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08G64/02C08J5/18C08L33/06
CPCC08J5/18C08G64/02C08L33/06C08G64/0208C08J2469/00C08J2333/12C08J2369/00C08J2433/12C08L69/00C08L33/12C08G64/305C08L2203/16
Inventor 今里健太前川祥一山中克浩
Owner TEIJIN LTD
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