The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 1988
Filed:
Dec. 18, 1986
Applicant:
Inventors:
Assignees:
Tosoh Corporation, both of, JP;
Hodogaya Chemical Co., Ltd., both of, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528388 ;
Abstract
A polyarylene sulfide having a low content of heavy metals and excellent heat stability is produced by mixing an alkali metal sulfide, water, and an organic polar solvent in the molar ratio of about 1:10 to 20:1 to 10 and by heating the mixture to remove water and then polymerizing the resulting mixture with a polyhalogenated aromatic compound. Such a polyarylene sulfide is very useful for use in electronic components and automotive parts, etc.