| 摘要 |
PURPOSE:To provide the titled compsn. having a high purity and excellent electrical characteristics and suitable for use as a sealing material or in coating electrical and electronic components, etc., containing a specified polyphenylene sulfide and an inorg. filler. CONSTITUTION:A highly purified polyphenylene sulfide (a), a compd. (b) selected from the group consisting of mercapto group-contg. compds. of formula I [wherein R is a hydrocarbon group or a residue of a heterocyclic compd.; M is H or an alkali metal; A is COOH, OH, (substd.) NH2 or NO2; x is a number of 1-6; and y is a number of 0-6] and disulfides of formula II (wherein R<1> is R; and x and y are each a number of 0-6) and optionally a base (c) are heat-treated in a solvent to obtain a polyphenylene sulfide (A) which is composed of not less than 90mol% of a structural unit of formula III (wherein n>=20) and other copolymerizable structural unit and has been purified to such a high purity that the content of bonded chlorine is not higher than 500ppm. 15-95wt% component A is blended with 15-85wt% powdered, granular or fibrous inorg. filler (B) (e.g., glass fiber, silica, TiO2).
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