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. 04, 1984
Filed:
Jul. 01, 1983
Toray Industries, Inc., Tokyo, JP;
Abstract
A stabilized polyphenylene sulfide is provided which comprises a recurring unit ##STR1## wherein the average n between foreign units is greater than about 5, and about 0.05 to 10 mole % per phenylene sulfide unit of an aromatic constituent chemically bonded with said polyphenylene sulfide chain, said aromatic constituent containing an electron attractive group selected from the group consisting of --SO.sub.2 --, --CO--, --NO.sub.2, --SO.sub.3 R, --COOR, wherein R is H, lower aliphatic hydrocarbon groups, aromatic hydrocarbon groups or alkaline metals, and --CONH--, and said stabilized polyphenylene sulfide has a melting point in the range of about 250.degree. C. to about 350.degree. C. Also provided is a method for preparing stabilized polyphenylene sulfide comprising preparing a polyphenylene sulfide consisting mainly of a recurring unit ##STR2## wherein the degree of polymerization of said recurring unit is greater than about 20, and reacting said polyphenylene sulfide with about 0.05 to about 20 mole % per said phenylene sulfide unit of a halogenated aromatic compound having an electron attractive group.