Temperature and pH-sensitive block copolymer having having excellent gel strength, method of preparing the same, and drug delivery system using the same
申请人:Sungkyunkwan University Foundation for Corporate
Collaboration
公开号:EP1988108A1
公开(公告)日:2008-11-05
Disclosed herein is a temperature- and pH-sensitive block copolymer having excellent gel strength, including: (a) a poly(ethylene glycol)-based compound (A) or a copolymer (B) of the poly(ethylene glycol)-based compound (A) and a biodegradable polymer; and (b) a polyurethane-based oligomer (C). Further, a method of preparing a temperature and pH-sensitive block copolymer having excellent gel strength, including: (a) synthesizing a poly(ethylene glycol)-based compound (A) or a copolymer (B) of the poly(ethylene glycol)-based compound (A) and a biodegradable polymer; and (b) coupling a polyurethane-based oligomer (C) with the copolymer (B), is disclosed. Also disclosed is a polymer hydrogel type drug delivery system, including: (a) the block copolymer; and (b) a physiologically active substance which can be included in the block copolymer.
本文公开了一种具有优异凝胶强度的对温度和 pH 值敏感的嵌段共聚物,包括:(a) 聚乙二醇基化合物(A)或聚乙二醇基化合物(A)与生物可降解聚合物的共聚物(B);(b) 聚氨酯基低聚物(C)。此外,还公开了一种具有优异凝胶强度的温度和 pH 值敏感性嵌段共聚物的制备方法,包括:(a) 合成聚(乙二醇)基化合物(A)或聚(乙二醇)基化合物(A)与可生物降解聚合物的共聚物(B);以及 (b) 将聚氨酯基低聚物(C)与共聚物(B)偶联。还公开了一种聚合物水凝胶型给药系统,包括:(a)嵌段共聚物;(b)可包含在嵌段共聚物中的生理活性物质。