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 |
US5079277(A) |
申请公布日期 |
1992.01.07 |
申请号 |
US19890343638 |
申请日期 |
1989.04.27 |
申请人 |
NATIONAL RESEARCH DEVELOPMENT CORPORATION |
发明人 |
WILSON, ALAN D.;ELLIS, JOHN |
分类号 |
A61K6/06;A61K6/00;A61K6/083;C04B28/00;C04B28/28;C08F30/02;C08L33/02;C08L43/02 |
主分类号 |
A61K6/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|