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:
Feb. 17, 1981
Filed:
Apr. 23, 1979
Applicant:
Inventors:
Patricia A Antonoplos, Huntington Beach, CA (US);
William J Heilman, Houston, TX (US);
Assignee:
Gulf Oil Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 302 ; 562427 ; 260 / ; 562430 ; 562433 ; 260 / ; 562460 ; 562466 ; 260322 ; 562473 ; 562490 ; 260 / ; 562491 ; 562492 ; 260 / ; 562495 ; 525426 ; 260 / ; 2603 / ; 526259 ; 526262 ; 526263 ; 526285 ; 528125 ; 528126 ; 528128 ; 528170 ; 528172 ; 528185 ; 528187 ; 528226 ; 528229 ; 528322 ; 528351 ; 528352 ; 528353 ; 560 13 ; 560 18 ; 560 36 ; 560 45 ; 560 47 ; 560 48 ;
Abstract
The products of the invention are end-capped polyimide oligomers prepared from a dianhydride of an aromatic tetracarboxylic acid such as 3,3'4,4'-benzophenonetetracarboxylic acid, an aromatic triamine, and a 1-(aminoaryl)-3-hydroxy-3-methyl-1-butyne. The structure of the polyimide oligomers is shown in FIG. 3.