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. 30, 2021
Filed:
Apr. 24, 2020
Applicant:
National Tsing Hua University, Hsinchu, TW;
Inventors:
Assignee:
NATIONAL TSING HUA UNIVERSITY, Hsinchu, TW;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 63/85 (2006.01); C08G 63/20 (2006.01); C08G 63/52 (2006.01); B01J 27/053 (2006.01); A61L 27/58 (2006.01); A61L 27/18 (2006.01);
U.S. Cl.
CPC ...
C08G 63/85 (2013.01); A61L 27/18 (2013.01); A61L 27/58 (2013.01); B01J 27/053 (2013.01); C08G 63/20 (2013.01); C08G 63/52 (2013.01);
Abstract
A method for preparing a biodegradable polyester elastomer includes a following steps comprising: dissolving a predetermined amount of titanium dioxide in an aqueous mixture of sulphuric acid, DI water, and ethanol to form a first solution; refluxing the first solution in a silicone oil bath and a stirring speed of 300-450 rpm at a temperature of 90-100° C. to form a second solution; preparing a solid superacid catalyst by drying, grinding and calcining sulfated titania and using this catalyst to produce a biodegradable polyester elastomer.