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Fluoroaluminosilicate glass powder and production method thereof
专利权人:
GC CORPORATION
发明人:
Yusuke Hokii,Katsuhito Kato,Futoshi Fusejima
申请号:
US14039461
公开号:
US09102813B2
申请日:
2013.09.27
申请国别(地区):
US
年份:
2015
代理人:
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.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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