发明名称 |
ALUMINA HYDRATE-CONTAINING TOOTHPASTE |
摘要 |
This invention relates to toothpaste containing an alumina hydrate abrasive and a source of fluoride. According to the invention, there is provided a toothpaste containing a source of fluoride ions and unmilled, precipitated alumina trihydrate as an abrasive, wherein the alumina trihydrate particles have a median particle size of at least 3 micrometres. The median particle size of the alumina trihydrate is preferably below 30 micrometres, more preferably from 5 to 20 micrometres, and most preferably 8 to 12 micrometres. It has been found that the use of an unmilled alumina trihydrate, obtained by precipitation, substantially reduces the loss of available fluoride on storage whereas the use of a milled alumina trihydrate causes significant loss of available fluoride.
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申请公布号 |
CA1337334(C) |
申请公布日期 |
1995.10.17 |
申请号 |
CA19890590468 |
申请日期 |
1989.02.08 |
申请人 |
ALCAN INTERNATIONAL LIMITED |
发明人 |
EVANS, KENNETH ARTHUR;WILLS, KEVIN JOHN;EMERY, ANTHONY ROLAND |
分类号 |
A61K8/21;A61K8/26;A61Q11/00;(IPC1-7):A61K7/18 |
主分类号 |
A61K8/21 |
代理机构 |
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地址 |
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