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. 31, 2010
Filed:
Jan. 26, 2005
Doo Sung Lee, Gyeonggi-do, KR;
Woo Sun Shim, Gyeonggi-do, KR;
You Han Bae, Salt Lake City, UT (US);
Je Sun You, Gyeonggi-do, KR;
Min Sang Kim, Gyeonggi-do, KR;
Huynh Dai Phu, Gyeonggi-do, KR;
Doo Sung Lee, Gyeonggi-do, KR;
Woo Sun Shim, Gyeonggi-do, KR;
You Han Bae, Salt Lake City, UT (US);
Je Sun You, Gyeonggi-do, KR;
Min Sang Kim, Gyeonggi-do, KR;
Huynh Dai Phu, Gyeonggi-do, KR;
Abstract
The present invention relates to a block copolymer formed by coupling the following components with each other, as well as a hydrogel composition comprising the block copolymer and a hydrogel formed from the composition: (a) a copolymer of a polyethylene glycol (PEG)-based compound with a biodegradable polymer; and (b) a sulfonamide-based oligomer. The inventive block copolymer shows the sol-gel transition behavior sensitive to changes in not only temperature but also pH. Thus, the inventive block copolymer overcomes the shortcomings of temperature-sensitive copolymers, form a more strong and stable hydrogel, and is stable in vivo. Accordingly, the inventive block copolymer can be used in various applications in the medical and drug delivery fields.