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Method for producing thermoplastic aromatic polyester resin composition, method for producing insert-molded article, and method for inhibiting reduction in heat shock resistance

A polyester resin and manufacturing method technology, applied in the direction of coating, etc., can solve the problems of thermal shock and damage of insert molding products, and achieve the effect of suppressing the reduction of thermal shock resistance

Pending Publication Date: 2019-04-16
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the thermal expansion coefficient and contraction rate due to temperature changes are greatly different between metals constituting the insert molded product and the thermoplastic resin composition. Therefore, in an environment where heating and cooling are repeated, the insert molded product may shrink due to temperature changes during use. so-called thermal shock damage

Method used

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  • Method for producing thermoplastic aromatic polyester resin composition, method for producing insert-molded article, and method for inhibiting reduction in heat shock resistance
  • Method for producing thermoplastic aromatic polyester resin composition, method for producing insert-molded article, and method for inhibiting reduction in heat shock resistance
  • Method for producing thermoplastic aromatic polyester resin composition, method for producing insert-molded article, and method for inhibiting reduction in heat shock resistance

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Embodiment

[0072] The present invention will be described more specifically by showing examples below, but the interpretation of the present invention is not limited by these examples.

[0073] [Reference Example 1, Examples 1-3, Comparative Examples 1-4]

[0074] Using the materials shown below, according to the content ratio shown in Tables 1 and 2, use a twin-screw extruder (manufactured by Nippon Steel Works Co., Ltd., cylinder diameter ) was kneaded at 250° C. to prepare thermoplastic aromatic polyester resin composition pellets of Reference Example 1, Examples 1-3, and Comparative Examples 1-4. It should be noted that Reference Example 1 is an example of an uncolored resin composition, and Comparative Examples 1 to 4 are when the colorant is directly added to the thermoplastic aromatic polyester resin A instead of being added in the form of the colorant composition B. example of. In addition, regarding the dispersibility of colorant compositions 1 to 3 used in Examples 1 to 3, 1...

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Abstract

The present invention addresses the problem of providing a method for producing a thermoplastic aromatic polyester resin composition containing a coloring agent and having superior heat shock resistance, and a method for producing an insert-molded article. The present invention addresses the problem of providing a method for inhibiting a reduction in the heat shock resistance of a thermoplastic aromatic polyester resin composition containing a coloring agent. A method for producing a thermoplastic aromatic polyester resin composition having superior heat shock resistance, the method comprisinga step for mixing thermoplastic aromatic polyester resin A with coloring agent composition B containing thermoplastic aromatic polyester resin a and coloring agent b. A method for inhibiting reduction in the heat shock resistance of a thermoplastic aromatic polyester resin composition containing a coloring agent, the method comprising mixing thermoplastic aromatic polyester resin A with coloringagent composition B containing thermoplastic aromatic polyester resin a and coloring agent b.

Description

technical field [0001] The present invention relates to a method for producing a thermoplastic aromatic polyester resin composition excellent in thermal shock resistance, a method for producing an insert molded product, and a method for suppressing a decrease in thermal shock resistance of a thermoplastic aromatic polyester resin composition containing a colorant . Background technique [0002] Heat resistance, chemical resistance, leakage resistance and other electrical and mechanical properties of thermoplastic aromatic polyester resins represented by polybutylene terephthalate resin and polyethylene terephthalate resin, Excellent various characteristics such as moldability and processability. Therefore, thermoplastic aromatic polyester resin compositions are widely used as engineering plastics in electronic parts such as housings and connectors of electronic equipment, automobile parts, and the like. These parts are often insert-molded products obtained by filling a the...

Claims

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Application Information

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IPC IPC(8): C08J3/22B29C45/14B29C45/26C08K3/00C08K3/04C08L67/02B29K67/00
CPCB29C45/26B29C45/14C08J3/22C08K3/00C08K3/04C08L67/02
Inventor 山田真也牛岛隆二五岛一也
Owner POLYPLASTICS CO LTD
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