发明授权
- 专利标题： Poly(vinylphosphonic acid) glass ionomer cement
- 专利标题（中）： POLY（VINYLPHOSPHONIC ACID）玻璃离子水泥
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申请号： US604857申请日： 1990-10-26
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公开(公告)号： US5179135A公开(公告)日： 1993-01-12
- 发明人: John Ellis , Alan D. Wilson
- 申请人： John Ellis , Alan D. Wilson
- 申请人地址： GB2 London
- 专利权人： National Research Development Corporation
- 当前专利权人： National Research Development Corporation
- 当前专利权人地址： GB2 London
- 优先权： GBX8924129 19891026
- 主分类号： A61L15/07
- IPC分类号： A61L15/07 ; A61K6/00 ; A61K6/06 ; A61K6/083 ; C04B14/42 ; C04B26/04 ; C04B28/28 ; C08F30/02 ; C08L33/02 ; C08L43/02
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 cement. 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. The glass contains heavy ions such as La, Ba or Sr.
公开/授权文献
- US5669865A body fold and extension exercise apparatus 公开/授权日：1997-09-23
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