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Thermoplastic resin composition, molded article, and film

A thermoplastic resin and composition technology, applied in the fields of thermoplastic resin compositions, molded products and films, can solve the problems of increased optical anisotropy and reduced transparency of resin compositions

Inactive Publication Date: 2006-04-12
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the methods disclosed in these patent documents, although the mechanical properties such as impact resistance are improved, there is a problem that the transparency of the resin composition is significantly reduced, or the photoelastic coefficient (birefringence) of the resin composition, The so-called problem of large optical anisotropy

Method used

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  • Thermoplastic resin composition, molded article, and film
  • Thermoplastic resin composition, molded article, and film
  • Thermoplastic resin composition, molded article, and film

Examples

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preparation example Construction

[0085] The preparation method of the graft copolymer (B-2) of the present invention is not particularly limited, and it can be obtained by known polymerization methods such as bulk polymerization, solution polymerization, suspension polymerization and emulsion polymerization.

[0086] In addition, when the refractive indices of the (A) thermoplastic polymer and the (B) rubber-containing polymer are similar, a thermoplastic resin composition excellent in transparency can be obtained, which is preferable. Specifically, it is preferable that the difference in refractive index between the two is 0.05 or less, more preferably 0.02 or less, particularly preferably 0.01 or less. In order to satisfy such a refractive index condition, a method of adjusting the composition ratio of each monomer unit of (A) thermoplastic polymer, and / or adjusting the rubber polymer or monomer used in (B) rubber-containing polymer The method of composition ratio, etc.

[0087] In addition, the refractive...

Embodiment 1～5

[0178]

[0179] The thermoplastic polymer (A) obtained by the above-mentioned reference example (2) and the rubber polymer (B) obtained by the reference example (3) are matched with the combination ratio shown in Table 2, and a twin-screw extruder (TEX30 ( Made by Nippon Steel Works, L / D=44.5)) Kneading was carried out at a cylinder temperature of 280° C. at a screw speed of 150 rpm to obtain a pelletized thermoplastic resin composition. Then, the pellets dried at 100° C. for 3 hours were put into an injection molding machine (M-50AII-SJ manufactured by Meiki Seisakusho Co., Ltd.), and each test piece was molded. The molding conditions are molding temperature: glass transition temperature of thermoplastic polymer (A) + 150°C, metal mold temperature: 80°C, injection speed: 90cm 3 / sec, injection time: 10 seconds, cooling time: 30 seconds, molding pressure: a pressure at which the resin is completely filled in the metal mold (molding lower limit pressure) + 1 MPa.

[0180]In ...

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Abstract

The present invention relates to a thermoplastic resin composition which contains a thermoplastic polymer (A) containing a glutaric anhydride-containing component shown in the following general formula (1), <CHEM> where R<1> and R<2> are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and a rubber-containing polymer compound (B), and satisfies the following conditions of (I) and / or (II), (I) a total light transmittance per 2 mm of the thickness of the thermoplastic resin composition is more than 90%, (II) a weight-average molecular weight of a thermoplastic polymer (A) is from 30,000 to 150,000 and a glass transition temperature is at least 130 DEG C. According to the present invention, a thermoplastic composition having high heat resistance, superior mechanical properties, colorless transparency, optical isotropy and moldability, as well as solvent resistance, is provided.

Description

technical field [0001] The present invention relates to a thermoplastic resin composition having excellent heat resistance, colorless transparency, fluidity and mechanical properties, and molded articles and films containing the thermoplastic resin composition. Background technique [0002] Amorphous resins called polymethyl methacrylate (hereinafter referred to as PMMA) or polycarbonate (hereinafter referred to as PC) have been used in optical materials, home appliances, In a wide range of fields represented by various parts such as OA equipment and automobiles. [0003] In recent years, these resins have been widely used in high-performance optical materials, especially optical lenses, prisms, mirrors, optical discs, optical fibers, sheets or films for liquid crystal displays, and light guide plates. Optical properties, formability and heat resistance are also improved. [0004] In addition, these transparent resins are also currently used as lighting components for auto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/06C08F8/48C08J5/18G02B1/04C08L35/00G02B1/10
CPCG02B1/10C08L35/00G02B1/04C08F8/48C08F20/12C08L2666/02C08F220/56C08F220/14C08F220/06C08F212/08C08F8/32C08L33/06C08J5/18C08F34/02
Inventor 松本英树佐藤大辅田中明子山中亨
Owner TORAY IND INC
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