Polyaryl sulfoether resin compsn.

Abstract

Provided is a polyarylene sulfide resin composition improved in turbidity caused by an extracted material from the polymer in a specific solvent (a refrigeration machine oil using an ester-based synthetic oil as a base oil). This polyarylene sulfide resin composition is obtained by blending (A) 100 pts. wt. polyarylene sulfide resin of which washing process after its polymerization is only by washing with an organic solvent and water and having >=150 ppm sodium content in the polymer with (B) 0.1-8 pts. wt. [alpha]-olefin polymer having 1,000-10,000 number-average molecular weight and / or silicone oil, (C) 0.01-10 pts. wt. alkoxysilane compound and (D) 20-250 pts. wt. inorganic filler.

Description

technical field [0001] The invention relates to a polyarylene sulfide resin composition. Background technique [0002] Polyarylene sulfide (hereinafter sometimes abbreviated as PAS) resin represented by polyphenylene sulfide (hereinafter sometimes abbreviated as PPS) has high heat resistance, mechanical properties, dimensional stability, and flame retardancy. It is widely used in electric-electronic equipment parts materials, automobile equipment parts materials, chemical equipment parts materials, etc. In addition, since PAS resin is excellent in water resistance and chemical resistance, it is also widely used in parts that come into contact with various solutions and solvents. [0003] However, in methods of use in contact with water, hot water, oil, fluorine-containing refrigerants, organic solvents, etc. (such as pipes, piping, insulators around refrigerator motors, etc.), extraction from polymers in solvents, solutions, etc. Substances have adverse effects on the perf...

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Problems solved by technology

[0003] However, in methods of use in contact with water, hot water, oil, fluorine-containing refrigerants, organic solvents, etc. (such as pipes, piping, insulators around refrigerator motors, etc.), extraction from polymers in solvents, solutions, etc. Substances have adverse effects on the performance of each component and restrict the use method

In particular, among the parts used in the refrigerator, when the parts made of PAS resin are used for a long time in the refrigerator oil based on the ester synthetic oil added with the refrigerant, there is extraction from the PAS resin. Substances make the refrigerator oil cloudy, thereby reducing the performance of the refrigerator

[0004] As a conventional method for solving this problem, it has been proposed to wash with a solvent (such as N-methylpyrrolidone, etc.) to reduce the low molecular weight (oligomer) component of PAS (JP-A-6-16935) , but the effect of turbidity reduction is not ideal

Also, a method without using a specific mold release agent has been proposed (JP-A-6-221266 A), but there is a problem that stable and continuous molding cannot be performed because the molded product is difficult to release from the mold.

Also, the method of adding more than 10 parts by weight of α-olefin resin has been proposed (International Publication No. WO00 / 14160, Japanese Patent Application Laid-Open No. 63-318386), but adding a large amount of α-olefin resin will cause the gas generated during molding processing. Many, there is a problem of mold deposits on the mold or molded sheet during molding processing, so it is not advisable

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