| 发明名称 |
POLY-VINYLPHOSPHONIC ACID AND METAL OXIDE OR CERMET OR GLASS IONOMER CEMENT |
| 摘要 |
A glass ionomer cement composition comprises poly(vinyl phosphonic acid) dissolved in its own mass of water; and (in treble the total mass of the solution) a powder, being glass or MgO or a cermet. The powder has to be deactivated so that the setting reaction with the acid is not too fast, and this is achieved either by a raised Si :Al ratio or by heat-treating. |
| 申请公布号 |
EP0340016(A3) |
申请公布日期 |
1990.11.22 |
| 申请号 |
EP19890304250 |
申请日期 |
1989.04.27 |
| 申请人 |
NATIONAL RESEARCH DEVELOPMENT CORPORATION |
发明人 |
WILSON, ALAN DONALD;ELLIS, JOHN |
| 分类号 |
A61K6/06;A61K6/00;A61K6/083;C04B28/00;C04B28/28;C08F30/02;C08L33/02;C08L43/02;(IPC1-7):A61K6/08;A61L25/00 |
主分类号 |
A61K6/06 |
| 代理机构 |
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代理人 |
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