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Rubber-reinforced thermoplastic resin composition and resin molded article

A thermoplastic resin and composition technology, which is applied in the field of rubber-reinforced thermoplastic resin compositions and their molded products, can solve the problems of non-optimization, reduce manufacturing costs, etc., and achieve the effects of short cooling and curing time and excellent mold release properties.

Active Publication Date: 2016-01-20
NIPPON A & L INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it requires new equipment, which is not preferable from the viewpoint of reducing manufacturing costs.

Method used

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  • Rubber-reinforced thermoplastic resin composition and resin molded article
  • Rubber-reinforced thermoplastic resin composition and resin molded article

Examples

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Embodiment

[0047] Hereinafter, the present invention will be specifically explained by showing examples, but the present invention is not limited by them. In addition, "parts" and "%" shown in the examples are based on mass.

[0048]

[0049] To the graft copolymer (A) and the copolymer (B) of the composition ratio shown in Table 1, 1.0 part of Sumiplast BlackHB (manufactured by Sumitomo Chemical Co., Ltd.) was mixed as a coloring agent. Using a 50 mm single-screw extruder (manufactured by Oenu Machinery) with vent holes, melt-mixing was performed at a barrel temperature of 210°C, and pellets dyed black were obtained by granulation. In addition, each component shown in Table 1 is as follows.

[0050] Manufacturing of rubber-like polymer (a)

[0051] Rubber-like polymer (a-1): Add 93 parts of 1,3-butadiene, 7 parts of styrene, 0.5 parts of n-dodecyl mercaptan, 0.24 parts of potassium persulfate, and 1.5 parts of rosin in a pressure vessel After sodium, 0.1 part of sodium hydroxide and 150 pa...

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Abstract

A rubber-reinforced thermoplastic resin composition comprising: a graft copolymer (A) forming a dispersion phase and obtained by graft copolymerization, in the presence of a rubber-like polymer (a), of at least one type of monomer (b) selected from a group comprising an aromatic vinyl-based monomer, a vinyl cyanide monomer, a (meth) acrylate ester-based monomer, and other copolymerizable monomers; and a copolymer (B) forming a continuous phase and being a copolymerization of at least one type of monomer (b) selected from a group comprising an aromatic vinyl-based monomer, a vinyl cyanide monomer, a (meth) acrylate ester-based monomer, and other copolymerizable monomers. The rubber-reinforced thermoplastic resin composition is characterized by the viscosity ratio (eta 1 / eta 2), between the viscosity (eta 1) at a shear rate of 1 * 101 / sec and the viscosity (eta 2) at a shear rate of 1 * 103 / sec, being no more than 10 as measured using a capillary rheometer having a 1 mm [phi]bore diameter.

Description

Technical field [0001] The invention relates to a rubber-reinforced thermoplastic resin composition and a molded product thereof. Background technique [0002] For a long time, styrene resins have been widely used in the fields of electrical and electronic equipment, OA equipment, etc., due to their good molding processability and balance of mechanical properties, and superior electrical insulation properties. In recent years, the shapes of molded products have become increasingly complex. In addition, welding lines may occur in complicated shape parts and parts provided with openings. The generation of weld lines will not only affect the appearance, but also have problems in terms of the strength of the product. [0003] For the purpose of covering these weld patterns, the product can be fully coated or partially coated. However, with regard to the coating process, there is a problem that the productivity is likely to be low due to poor coating. In addition, starting from the ...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08L25/12
CPCC08F279/04C08L51/04C08F2/22C08L25/12
Inventor 冈田真彰桥本笃史高田义明
Owner NIPPON A & L INC
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