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:
Aug. 24, 1993
Filed:
May. 04, 1990
George P Speranza, Austin, TX (US);
Jiang-Jen Lin, Houston, TX (US);
Texaco Chemical Company, White Plains, NY (US);
Abstract
Block polyamido polyamine condensation products of an aromatic polycarboxylic acid component with a polyoxyalkylene polyamine component prepared by reacting the polycarboxylic acid component with an amount of the polyoxyalkylene polyamine component sufficient to react each carboxyl group with 1 mole of the polyoxyalkylene polyamine component. The polyoxyalkylene polyamine being selected from the group consisting of polyoxypropylene diamines, polyoxyethylene diamines, polyoxyethylene/oxypropylene diamines and polyoxypropylene triamines, and the aromatic polycarboxylic acid component being selected from the group consisting of C.sub.8 to C.sub.28 benzene dicarboxylic acids, benzene tricarboxylic acids, naphthalene carboxylates, hemimellitic acid, 1,1,3-trimethyl-3-phenylindan-4',5-dicarboxylic acid, trimellitic acid, and anhydrides and C.sub.1 to C.sub.4 alkyl esters thereof.