Gypsum composition for denture investment
    1.
    发明授权
    Gypsum composition for denture investment 失效
    石膏组合物用于义齿投资

    公开(公告)号:US4526619A

    公开(公告)日:1985-07-02

    申请号:US516331

    申请日:1983-07-22

    摘要: A gypsum composition for denture investment consists of 100 parts by weight of a mixture of 50-90 parts by weight of .alpha.-Gypsum hemihydrate (.alpha.-CaSO.sub.4.1/2H.sub.2 O) with 10-50 parts by weight of .beta.-Gypsum hemihydrate (.beta.-CaSO.sub.4.1/2H.sub.2 O) and 0.2-2.0 parts by weight of a soluble potassium salt. As the soluble potassium salt, use may be made of one or more of potassium sulfate, potassium chloride and potassium tartrate. The gypsum composition may further include 0.5-5.0 parts by weight of dihydrate gypsum.

    摘要翻译: 用于义齿投资的石膏组合物由100重量份的50-90重量份的α-石膏半水合物(α-C 4 SO 4 .1 / 2H 2 O)与10-50重量份的β-石膏半水合物(β -CaSO 4·1 / 2H 2 O)和0.2〜2.0重量份的可溶性钾盐。 作为可溶性钾盐,可以使用硫酸钾,氯化钾和酒石酸钾中的一种或多种。 石膏组合物还可以包含0.5-5.0重量份的二水石膏。

    Dental glass ionomer cement compositions
    2.
    发明授权
    Dental glass ionomer cement compositions 失效
    牙科玻璃离子水泥组合物

    公开(公告)号:US5063257A

    公开(公告)日:1991-11-05

    申请号:US448298

    申请日:1989-12-11

    摘要: A dental glass ionomer cement composition comprises:(a) 5 to 100 parts by weight of a polymer of an .alpha.-.beta. unsaturated carboxylic acid having a weight average molecular weight of 5,000 to 40,000,(b) 5 to 100 parts by weight of a fluoroaluminosilicate glass powder having an average particle size of 0.02 to 10 .mu.m and a specific gravity of 2.4 to 4.0 and capable of reacting with said "polymer of an .alpha.-.beta. unsaturated carboxylic acid having a weight average molecular weight of 5,000 to 40,000",(c) 5 to 100 parts by weight of a polymerizable unsaturated organic compound having at least one CH.sub.2 .dbd.C(R1)--COO--group wherein R1=H or CH.sub.3,(d) 0.01 to 5 parts by weight of a polymerization catalyst,(e) 2 to 50 parts by weight of water,(f) 0.01 to 20 parts by weight of a surface active agent, and(g) 0.01 to 5 parts by weight of a reducing agent, and optionally h. 0 to 50 parts by weight of an inorganic filler having an average particle size of 0.02 to 10 .mu.m and undergoing no reaction with said "polymer of an .alpha.-.beta. unsaturated carboxylic acid having a weight average molecular weight of 5,000 to 40,000".

    摘要翻译: 牙科玻璃离聚物粘合剂组合物包含:(a)5至100重量份的重均分子量为5,000至40,000的α-β不饱和羧酸的聚合物,(b)5至100重量份的 平均粒径为0.02〜10μm,比重为2.4〜4.0,能够与所述“重均分子量为5,000〜40,000的α-β不饱和羧酸的聚合物”反应的氟铝硅酸盐玻璃粉末, (c)5至100重量份具有至少一个CH 2 = C(R 1)-COO-基团的可聚合不饱和有机化合物,其中R1 = H或CH3,(d)0.01至5重量份的聚合催化剂, (e)2至50重量份的水,(f)0.01至20重量份的表面活性剂,和(g)0.01至5重量份的还原剂,以及任选的h。 0〜50重量份平均粒径为0.02〜10μm的无机填料,并且与所述“所述重均分子量为5,000〜40,000的α-β不饱和羧酸的聚合物不反应”。

    Glass powders for dental glass ionomer cements
    3.
    发明授权
    Glass powders for dental glass ionomer cements 失效
    用于牙科玻璃离聚物水泥的玻璃粉末

    公开(公告)号:US4900697A

    公开(公告)日:1990-02-13

    申请号:US150299

    申请日:1988-01-29

    摘要: A fluoroaluminosilicate glass powder for dental glass ionomer cements has a specific gravity of 2.4 to 3.5 and a mean particle size of 0.02 to 10 .mu.m, contains in its components 20 to 50% by weight of SiO.sub.2, 20 to 40% by weight of Al.sub.2 O.sub.3, 15 to 40% by weight of SrO, 1 to 20% by weight of F.sub.2 and 0 to 15% by weight of P.sub.2 O.sub.5 on the converted oxide basis, and is substantially free from alkali metal ions such as Li, Na, K, Rb and Cs ions, and Be, Mg (and Ca) and Ba ions of alkali earth metal ions. For further improvements in physical properties, 100 parts by weight of the glass powder are surface-treated with 0.01 to 5 parts by weight of an acid and/or a fluoride.

    摘要翻译: 用于牙科玻璃离聚物粘固剂的氟铝硅酸盐玻璃粉末的比重为2.4至3.5,平均粒径为0.02至10微米,其组分包含20至50重量%的SiO 2,20至40重量%的Al 2 O 3 ,15〜40重量%的SrO,1〜20重量%的F 2和0〜15重量%的P 2 O 5,基本上不含碱金属离子如Li,Na,K,Rb 和Cs离子,以及碱土金属离子的Be,Mg(和Ca)和Ba离子。 为了进一步改善物理性能,将100重量份的玻璃粉末用0.01至5重量份的酸和/或氟化物进行表面处理。

    Gypsum composition for denture investment
    4.
    发明授权
    Gypsum composition for denture investment 失效
    石膏组合物用于义齿投资

    公开(公告)号:US4647311A

    公开(公告)日:1987-03-03

    申请号:US771020

    申请日:1985-08-30

    IPC分类号: A61K6/027 C09K3/00

    CPC分类号: A61K6/0625

    摘要: A gypsum composition for denture investment comprises 100 parts by weight of a mixture of 50-90 parts by weight of .alpha.-Gypsum hemihydrate (.alpha.-CaSO.sub.4.1/2H.sub.2 O) with 10-50 parts by weight of .beta.-Gypsum hemihydrate (.beta.-CaSO.sub.4.1/2H.sub.2 O) and 0.2-2.0 parts by weight of a soluble potassium salt and 0.5-3.0 parts by weight of mannitol. As the soluble potassium salt, use may be made of one or more of potassium sulfate, potassium chloride and potassium tartrate. The gypsum composition may further include 0.5-5.0 parts by weight of dihydrate gypsum.

    摘要翻译: 用于义齿投资的石膏组合物包含100重量份的50-90重量份的α-石膏半水合物(α-C 4 SO 4 .1 / 2H 2 O)与10-50重量份的β-石膏半水合物(β- CaSO4.1 / 2H2O)和0.2-2.0重量份可溶性钾盐和0.5-3.0重量份甘露醇。 作为可溶性钾盐,可以使用硫酸钾,氯化钾和酒石酸钾中的一种或多种。 石膏组合物还可以包含0.5-5.0重量份的二水石膏。