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:
Nov. 01, 1983
Filed:
Sep. 29, 1982
Applicant:
Inventors:
Tayseer S Nimry, Wheaton, IL (US);
Ellis K Fields, River Forest, IL (US);
Assignee:
Standard Oil Company (Indiana), Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528189 ; 428458 ; 528125 ; 528128 ; 528172 ; 528188 ; 528206 ; 528208 ; 528220 ; 528229 ; 528352 ; 528353 ;
Abstract
This invention relates to copolyimides-polyamides prepared from mixtures of tetramethylcyclobutane-1,2,3,4-tetracarboxylic dianhydride (TMCDA), aromatic or aliphatic dianhydrides, and dicarboxylic acids or their esters or acid chlorides. These dianhydride-dicarboxylic acid mixtures are then reacted with aliphatic or aromatic diamines. These novel copolyimides-polyamides are useful in the preparation of molded articles, fibers, films, laminates and coatings.