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:
Nov. 12, 2013
Filed:
Jun. 06, 2011
Naveen Chopra, Oakville, CA;
Thomas E Enright, Tottenham, CA;
Michelle N Chrétien, Mississauga, CA;
Barkev Keoshkerian, Thornhill, CA;
Daryl W Vanbesien, Burlington, CA;
Naveen Chopra, Oakville, CA;
Thomas E Enright, Tottenham, CA;
Michelle N Chrétien, Mississauga, CA;
Barkev Keoshkerian, Thornhill, CA;
Daryl W Vanbesien, Burlington, CA;
Xerox Corporation, Norwalk, CT (US);
Abstract
Disclosed is a process for preparing a compound of the formula wherein Rand R', Rand R′, and Rare as defined herein, said process comprising (I) reacting a diacid of the formula HOOC—R—COOH with a diamine of the formula HN—R—NHto form an acid-terminated oligoamide intermediate of the formula HOOC—R—CONH—R—HNCO—R′—COOH; and (II) reacting the acid-terminated oligoamide intermediate with a monoalcohol of the formula R—OH in the presence of a tin or organic titanate catalyst, in the absence of a coupling agent, and in the absence of a solvent to form the product. Also disclosed is a composition prepared by the process.