发明名称 |
New 2-hydroxyethyl acrylate] or methacrylate] copolymers - with acrylamido carboxylic acid derivs., forming hydrogels with high water capacity |
摘要 |
Copolymers (I) of 2-hydroxyethyl acrylate (HEA) or 2-hydroxethyl methacrylate (HEMA) with acrylamido carboxylic acid derivs. of formula CH2=CH-CO-NH-Q-COOX (II), including crosslinked copolymers, are new, (where X = alkali metal, NH4 or 1-3C alkyl; Q = opt. substd. 1-18C alkylene). (II) is specifically Na 4-acrylamidobutyrate (AMB-Na), Na 10-acrylamido-undecanoate (AMU-Na) or Na 2-acrylamido-2-hydroxyacetate (AHA-Na). USE/ADVANTAGE - (I) form hydrolgels that are useful as controlled-release pharmaceutical carriers, enzyme-immobilising carriers or membranes. (I) have high water absorption capacities, e.g. 63-99% which may be increased by increasing the proportion of (II).
|
申请公布号 |
DE4023577(A1) |
申请公布日期 |
1992.01.30 |
申请号 |
DE19904023577 |
申请日期 |
1990.07.25 |
申请人 |
CHEMIE LINZ (DEUTSCHLAND) GMBH, 6200 WIESBADEN, DE |
发明人 |
PIEH, STEFAN, DR., LEONDING, AT;WILLERT, GERHARD, ING., KATSDORF, AT |
分类号 |
A61L27/16;C08F220/56;C08F220/58;G02B1/04 |
主分类号 |
A61L27/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|