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:
Feb. 02, 2010
Filed:
Aug. 01, 2005
Min-hyo Seo, Daejeon, KR;
Bong-oh Kim, Daejeon, KR;
Myung-seob Shim, Seoul, KR;
Sang-jun Lee, Daejeon, KR;
Min-Hyo Seo, Daejeon, KR;
Bong-Oh Kim, Daejeon, KR;
Myung-Seob Shim, Seoul, KR;
Sang-Jun Lee, Daejeon, KR;
Samyang Corporation, Seoul, KR;
Abstract
The present invention relates to an ionic multi-block copolymer composition comprising tri-block copolymers having a polypropyleneoxide or polybutyleneoxide block positioned between two polyethyleneoxide blocks and the tri-block copolymers are connected through dicarboxylic acid linkages forming a multi-block copolymer having a weight average molecular weight of more than 40,000 Dalton. The higher weight average molecular weight enables the hydrolgel formed from the multi-block copolymer of the present invention to maintain its gel status for more than several days.