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Rubber-reinforced thermoplastic resin composition and resin molded product

A resin composition and resin molding technology, applied in the field of rubber-reinforced thermoplastic resin composition and its molded products, can solve problems such as unoptimized and reduced manufacturing costs, and achieve the effects of short cooling and solidification time and excellent mold release properties

Active Publication Date: 2021-02-19
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 product
  • Rubber-reinforced thermoplastic resin composition and resin molded product

Examples

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Embodiment

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

[0048]

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

[0050] Manufacture of rubbery polymer (a)

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

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Abstract

A rubber-reinforced thermoplastic resin composition, which comprises a dispersed phase of a graft copolymer (A) and a continuous phase of a copolymer (B), wherein the graft copolymer (A) is formed in a rubbery polymer (a ), using at least one selected from the group consisting of aromatic vinyl monomers, vinyl cyanide monomers, (meth)acrylate monomers and other copolymerizable monomers A graft copolymer (A) obtained by graft-copolymerizing a monomer (b), wherein the copolymer (B) is selected from the group consisting of aromatic vinyl monomers, vinyl cyanide monomers, A copolymer (B) formed by copolymerizing at least one monomer (b) of the group consisting of a (meth)acrylate monomer and other copolymerizable monomers, the characteristics of the rubber-reinforced thermoplastic resin composition That is, in a capillary rheometer with a diameter of 1mmφ, the shear rate is 1×10 1 Viscosity (η1) and shear rate at / sec are 1×10 3 The viscosity ratio (η1 / η2) of the viscosity (η2) in / sec is 10 or less.

Description

technical field [0001] The present invention relates to a rubber-reinforced thermoplastic resin composition and molded articles thereof. Background technique [0002] Styrene-based resins have been widely used in fields such as electrical and electronic equipment and OA equipment because they have a good balance between moldability and mechanical properties, and have excellent electrical insulation properties. In recent years, the shapes of molded products have become increasingly complex. In addition, weld streaks are generated in complex-shaped parts and parts where openings are provided. The generation of weld marks not only affects the appearance, but also has problems in terms of the strength of the product. [0003] The product may be fully or partially painted for the purpose of covering these weld lines. However, in the coating process, there is a problem in that productivity tends to decrease due to poor coating. In addition, in view of the trend of suppressing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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