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:
Apr. 19, 1983
Filed:
Jun. 11, 1982
Toray Industries, Inc., Tokyo, JP;
Abstract
The aliphatic copolyesteramide having high degree of polymerization, is prepared by heating a mixture of (A) ester-forming components comprising (a) aliphatic diols and (b) aliphatic dicarboxylic acids and (B) amide-forming components comprising at least one component selected from the group consisting of (a) aliphatic .omega.-aminocarboxylic acids and (b) equimolar salt of (.alpha.) aliphatic diamines and (.beta.) aliphatic dicarboxylic acids, at temperatures of about 150.degree. to 260.degree. C., substantially under an atmospheric pressure, in the presence of catalyst and in the substantially absence of water, and subsequently heating the resulting esterified product at temperatures of about 200.degree. to 300.degree. C. under a reduced pressure. The obtained copolyesteramide can be formed into various molded articles, such as tubing, having excellent flexibility, toughness, shapability, chemical resistance, heat resistance, hydrolysis resistance and fatigue resistance.