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    • 4. 发明授权
    • Cement composition
    • 水泥组成
    • US5051453A
    • 1991-09-24
    • US304200
    • 1989-01-31
    • Minahiro OkabayashiHideki OhnoKoshi Kusumoto
    • Minahiro OkabayashiHideki OhnoKoshi Kusumoto
    • A61K6/083C08K3/40
    • A61K6/0835A61K6/0023C08K3/40
    • Disclosed in a cement composition comprising an unsaturated carboxylic acid polymer and an alkaline earth metal aluminofluorosilicate glass, wherein the alkaline earth metal aluminofluorosilicate glass comprises (a) 50 to 95% by weight of coarse particles having a spherical shape and an F/Si ratio of at least 0.1 but lower than 0.6 and having a particle size larger than 3 .mu.m but not larger than 50 .mu.m and (b) 5 to 50% by weight of fine particles having an F/Si ratio of 0.6 to 5 and a particle size of up to 3 .mu.m.This cement composition gives a cured body having a good surface gloss and a high strength, and this cement composition has a good flowability and a good workability. Accordingly, the cement composition is valuable as a dental cement composition.
    • 本发明公开了一种包含不饱和羧酸聚合物和碱土金属铝氟硅酸盐玻璃的水泥组合物,其中碱土金属铝氟硅酸盐玻璃包含(a)50至95重量%的球形和F / Si比为 至少0.1但小于0.6,并且具有大于3μm但不大于50μm的粒度,和(b)5至50重量%的F / Si比为0.6至5的细颗粒和颗粒 面积达3亩。 该水泥组合物得到具有良好的表面光泽度和高强度的固化体,该水泥组合物具有良好的流动性和良好的加工性。 因此,水泥组合物作为牙科水泥组合物是有价值的。