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:
Sep. 07, 1993
Filed:
Dec. 21, 1990
Applicant:
Inventors:
Ronald E Bockrath, Oswego, IL (US);
Edward J Gordon, Evanston, IL (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
528353 ; 528125 ; 528126 ; 528128 ; 528170 ; 528171 ; 528173 ; 528174 ; 528179 ; 528185 ; 528188 ; 528220 ; 528229 ; 528332 ; 528350 ; 528352 ; 525432 ; 524600 ;
Abstract
Improved imide-containing copolymers comprising, in the aromatic diamine component, p-phenylene diamine and at least one additional aromatic diamine have increased rigidity and useful processability. The copolymers of this invention also may exhibit improved resistance to the detrimental effects of humid environments and retain mechanical properties at elevated temperatures after exposure to humid environments.