发明授权
US08974813B2 Hydrophilic polyurethane compositions 有权
亲水性聚氨酯组合物

Hydrophilic polyurethane compositions
摘要:
A water-swellable linear polymer is made by reacting together a polyethylene oxide of number average molecular weight less than 4,000, an aliphatic diol, and a difunctional diisocyanate. 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.
公开/授权文献
信息查询
0/0