发明名称 |
Abrasive dental articles |
摘要 |
An abrasive composition and dental articles made from same, the composition including abrasive particles dispersed throughout and entrapped within a polyurea or polyurethane urea matrix which contains soft and hard segments wherein the matrix is made from the polymerization reaction of a polyfunctional amine and a polyfunctional isocyanate. The abrasive dental articles include prophylactic cups and polishing wheels, points and discs.
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申请公布号 |
US5273559(A) |
申请公布日期 |
1993.12.28 |
申请号 |
US19920992014 |
申请日期 |
1992.12.17 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
HAMMAR, W. JAMES;JOOS, RICHARD W. |
分类号 |
A61C3/06;A61C17/00;B24D3/32;(IPC1-7):C09K3/14 |
主分类号 |
A61C3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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