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:
Jun. 03, 1980
Filed:
Apr. 26, 1979
Applicant:
Inventors:
Wai Y Chow, Houston, TX (US);
S Paul Thackaberry, Houston, TX (US);
Assignee:
Gulf Oil Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
260 302 ; 528353 ; 528178 ; 260 / ; 528185 ; 528187 ; 260 / ; 560 11 ; 560 18 ; 260 322 ; 560 52 ; 560 66 ; 260 324 ; 560 76 ; 526259 ; 260 / ; 526262 ; 526263 ; 260 / ; 526285 ; 260 / ; 2603 / ; 26032626 ; 2603 / ; 2605011 ; 2605012 ; 26050121 ; 2605 / ; 2605 / ; 2605 / ; 2605 / ; 2605 / ; 528125 ; 528126 ; 528128 ; 528170 ; 528172 ; 528205 ; 528208 ; 528220 ; 528226 ; 528229 ; 528322 ; 528334 ; 528342 ; 528352 ;
Abstract
The products of the invention are acetylene end-capped polyimide oligomers prepared from a dianhydride of an aromatic tetracarboxylic such as 3, 3', 4, 4'-benzophenonetetracarboxylic acid, an aromatic triamine, and a propargyl ester of an amino-substituted aromatic acid such as aminobenzoic acid. The structure of the polyimide oligomers is shown in FIG. 3.