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. 05, 2002
Filed:
Feb. 07, 2001
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The present invention relates to polyethyleneglycol/polylactide(or polyglycolide or polycaprolactone)/polyethyleneglycol triblock copolymers with an enhanced reactivity, and process for their preparation. More specifically, the present invention is directed to triblock copolymers that are obtained by the process comprising the step of synthesizing a polylactide(or polyglycolide or polycaprolactone) having hydroxy groups at both ends and the step of coupling said polylactide with polyethyleneglycol having an acylhalide group of a high reactivity at one of its ends, and the process for preparing the same Since the triblock copolymer according to the present invention has an ester structure with good biocompatibility, it can be applied extensively for biomaterials used in tissue engineering, in a matrix that slowly releases drugs, etc.