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:
Dec. 09, 1980
Filed:
Jul. 05, 1979
Ato Chimie, Courebevoie, FR;
Abstract
Hydrolysis-resistant copolyether-esteramides according to this invention are terminated, at one chain end, by a hydrocarbon radical and at the other chain end by a hydroxyl group. The sequential linear aliphatic copolyether-esteramides according to the invention are obtained by a polycondensation reaction of linear aliphatic dicarboxylic polyamide oligomers having a molecular weight comprised between 300 and 15,000, with .omega.-.omega.'-dihydroxyl polyoxyalkylene sequences having a molecular weight comprised between 100 and 6000 in the presence of a linear aliphatic monocarboxylic polyamide oligomer having a carboxyl group at one end of the macromolecular chain and a hydrocarbon radical at the other end thereof.