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. 14, 2018
Filed:
Jun. 04, 2013
Tatung Company, Taipei, TW;
Tatung University, Taipei, TW;
Tatung Company, Taipei, TW;
TATUNG UNIVERSITY, Taipei, TW;
Abstract
A biodegradable polyester is consisting of a poly(terephthalate-di-(ε-caprolactone) segment, a poly(terephthalate-butylene-terephthalate) segment, a poly(terephthalate-butylene-ε-caprolactone) segment, a poly(ε-caprolactone-butylene-ε-caprolactone) segment, and a poly(tri(ε-caprolactone) segment. The above five segments are obtained by polycondensation reaction of terephthalic acid, 1,4-butanediol and ε-caprolactone under the presence of a catalyst, with a polycondensation temperature of 255° C. to 270° C. and a polycondensation time of 2 hours to 4 hours. Furthermore, based on 1 mole of terephthalic acid, a molar ratio of 1,4-butanediol to terephthalic acid is in the range of 1.1 to 1.4, and a molar ratio of ε-caprolactone to terephthalic acid is in the range of 0.5 to 1.6. The biodegradable polyester can have a melting point (Tm) of 90° C. to 170° C.