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:
Mar. 19, 1991
Filed:
Apr. 05, 1990
Applicant:
Inventors:
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 49 ; 528 59 ; 528 61 ; 528 73 ; 528 75 ; 528323 ; 528325 ;
Abstract
A polyether-polyamide block copolymer having an ethylenically unsaturated group represented by formula (I): ##STR1## wherein symbols are as defined in the specification; and a polyether prepolymer represented by formula (II): ##STR2## wherein the symbols are as defined in the specification, which is a starting material for synthesizing the above polyether-polyamide block copolymer, are disclosed. The polyether-polyamide block copolymer exhibits improved heat stability while retaining excellent characteristics inherent to polyether-polyamide.