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. 05, 1979
William J Heilman, Houston, TX (US);
Daniel J Hurley, Houston, TX (US);
Gulf Oil Corporation, Pittsburgh, PA (US);
Abstract
The products of the invention are vinyl end-capped oligomers which are prepared from 2,4-bis (p-aminobenzyl) aniline and a vinyl substituted aromatic monoamine, the principal component of which is the compound whose structure is shown in FIG. 3. The products are prepared from either of two (2) precursors. The first precursor is a compound whose structure is shown in FIG. 2 and which is prepared from 2,4-bis (p-aminobenzyl) aniline, a dianhydride of an aromatic tetracarboxylic acid such as 3,3'4,4'-benzophenonetetracarboxylic acid (BTDA) and a vinyl substituted aromatic monoamine, such as 3-aminophenyl-ethylene (APE). The second precursor is a complex amine salt having the structure shown in FIG. 6 and which is prepared from 2,4-bis-(p-aminobenzyl) aniline, a dialkyl ester of BTDA and APE.