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. 27, 2016
Filed:
Jun. 10, 2013
Applicant:
The Hong Kong Polytechnic University, Hung Hom, HK;
Inventors:
Assignee:
The Hong Kong Polytechnic University, Hung Hom, HK;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/32 (2006.01); C08G 18/66 (2006.01); C08G 18/42 (2006.01); C08G 18/76 (2006.01); C08G 18/24 (2006.01); C08G 18/10 (2006.01); C08G 18/73 (2006.01);
U.S. Cl.
CPC ...
C08G 18/3206 (2013.01); C08G 18/10 (2013.01); C08G 18/244 (2013.01); C08G 18/324 (2013.01); C08G 18/3228 (2013.01); C08G 18/3231 (2013.01); C08G 18/3234 (2013.01); C08G 18/3243 (2013.01); C08G 18/4238 (2013.01); C08G 18/4277 (2013.01); C08G 18/6618 (2013.01); C08G 18/6651 (2013.01); C08G 18/73 (2013.01); C08G 18/76 (2013.01); C08G 18/7671 (2013.01); C08G 2280/00 (2013.01);
Abstract
A semi-crystalline shape memory polymer with transition temperature near body temperature and the production method thereof is disclosed. The shape memory polymer comprises a polymer chain which further comprises a plurality of prepolymers and a plurality of chain extenders bonding the prepolymers together in which each prepolymer further comprises a plurality of synthesized units. The above mentioned synthesized unit is obtained by reacting polymer diol with first diisocyanate. The obtained synthesized units are polymerized together with second diisocyanate and chain extender to form the shape memory polymer.