发明名称 |
DICALCIUM PHOSPHATE DIHYDRATE FOR FLUORIDE DENTIFRICE COMPOSITIONS |
摘要 |
DICALCIUM PHOSPHATE DIHYDRATE FOR FLUORIDE DENTIFRICE COMPOSITIONS The monofluorophosphate compatibility of dicalcium phosphate dihydrate can be improved in processes in which a slaked lime slurry is reacted with phosphoric acid to form a monocalcium phosphate solution to which is added magnesium oxide, additional lime slurry and pyrophosphoric acid with later removal of the dicalcium phosphate dihydrate. The improvement involved adding the magnesium oxide at 0.3% - 2% and adding 0.1% - less than 0.5% of trimagnesium phosphate to the recovered dicalcium phosphate dihydrate. |
申请公布号 |
CA1284296(C) |
申请公布日期 |
1991.05.21 |
申请号 |
CA19870531579 |
申请日期 |
1987.03.10 |
申请人 |
STAUFFER CHEMICAL COMPANY |
发明人 |
LI, ROSA |
分类号 |
A61K8/00;A61K8/21;A61K8/24;A61Q11/00;C01B25/32;H01G4/232 |
主分类号 |
A61K8/00 |
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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