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:
Oct. 13, 2015
Filed:
Apr. 26, 2011
Wei-hung Chen, New Taipei, TW;
Tai-you Chen, New Taipei, TW;
Pao-chi Chen, New Taipei, TW;
Chin-wen Chen, New Taipei, TW;
Syang-peng Rwei, New Taipei, TW;
Wei-Hung Chen, New Taipei, TW;
Tai-You Chen, New Taipei, TW;
Pao-Chi Chen, New Taipei, TW;
Chin-Wen Chen, New Taipei, TW;
Syang-Peng Rwei, New Taipei, TW;
TAIWAN TEXTILE RESEARCH INSTITUTE, New Taipei, TW;
Abstract
A process for manufacturing a modified polyester, comprising the steps of: obtain a esterification product of diacid, diol, and a branching agent having at least three carboxyl groups , wherein the branching agent is present in an amount of up to 1 mol %, and carrying out a polycondensation reaction of the esterification product and a diamine to obtain the modified polyester, wherein the diamine is present in an amount of about 0.07 to about 0.22 mol %, the diacid comprises a combination of at least one aliphatic diacid and at least one aromatic diacid which is present in an amount no greater than about 10 mol % based upon the total moles of the diacid and the diol. The modified polyester is a thermally induced shape-memory material having an activation temperature of about 40 to 99° C., a percent elongation at break of about 29.9 % to 40.9% and bending modulus of about 40.3 MPa to about 20.1 Mpa.