发明名称 |
Fluoroaluminosilicate glass powder and production method thereof |
摘要 |
[Problems to be Solved];To provide fluoroaluminosilicate glass powder enabling to improve acid resistance of dental glass ionomor cement and a production method thereof.;[Solution];A lanthanum compound eluted in the presence of polycarboxylic acid and water exists only in a surface layer of a fluoroaluminosilicate glass powder. An amount of the fluoroaluminosilicate glass powder is preferably 1 to 5% by weight in terms of oxide. The fluoroaluminosilicate glass powder is produced by mixing an aqueous solution of a lanthanum compound and a fluoroaluminosilicate glass powder not containing lanthanum, and heating them. The aqueous solution of lanthanum compound is an aqueous solution of a water solvable lanthanum compound, preferably an aqueous solution of lanthanum nitrite and/or an aqueous solution of lanthanum chloride. |
申请公布号 |
US9102813(B2) |
申请公布日期 |
2015.08.11 |
申请号 |
US201314039461 |
申请日期 |
2013.09.27 |
申请人 |
GC CORPORATION |
发明人 |
Hokii Yusuke;Kato Katsuhito;Fusejima Futoshi |
分类号 |
C04B20/10;C08K3/40;A61K6/00;A61K6/083;C03C3/112;C03C4/00;C03C12/00;C04B28/28;C03C23/00;A61K6/02;C04B111/00 |
主分类号 |
C04B20/10 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. Fluoroaluminosilicate glass powder, comprising a lanthanum compound directly bonded to the powder, wherein the lanthanum compound to be eluted in a presence of polycarboxylic acid and water exists only in a surface layer of the powder. |
地址 |
Bunkyo-ku JP |