Tuominen, Jukka,Zurutuza, Amaia,Livingstone, Mark,Halliday, Janet A.
申请号：
HK16108127.1
公开号：
HK1220220A
申请日:
2016.07.12
申请国别(地区):
HK
年份:
2017
代理人:
摘要：
A water-swellable linear polymer is made by reacting together a polyethylene oxide of number average molecular weight less than 4000, an aliphatic diol and a difunctional isocyanate. Controlled release composition comprises the polymer together with an active agent. The polymer is able to take up pharmaceutically active agents of molecular weight 200 to 20,000.
