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:
Jul. 10, 1984
Filed:
Oct. 11, 1983
Applicant:
Inventors:
Yoshihiro Arai, Joyo, JP;
Takumi Tanaka, Uji, JP;
Assignee:
Unitika Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
525438 ; 528288 ; 528289 ; 528297 ;
Abstract
This invention is a polymer and a method of making heat resistant polyester which is characterized by reacting the polyester which consists of aromatic dicarboxylic acid and glycol with 2-6 carbons, with 0.1-5 weight % of the bifunctional epoxy compound which has one carbonyl group adjacent to the nitrogen atom and is expressed by the general formula ##STR1## (R is a divalent organic group) to keep the amount of end carboxyl group below 15 g equivalent/10.sup.6 g polymer.
Arai, Yoshihiro. (1984). Method of making and polymer of heat resistant polyester using (U.S. Patent No. 4459390). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4459390
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile