发明名称 |
PRECIPITATED SILICA MATERIALS EXHIBITING HIGH COMPATIBILITY WITH CETYLPYRIDINIUM CHLORIDE |
摘要 |
Precipitated silica comprising porous silica particles having a cumulative surface area for all pores having diameters greater than 500 Å of less than 6 m2/g, as measured by mercury intrusion, and a percentage cetylpyridinium chloride (% CPC) Compatibility of greater than about 85%. The precipitated silica product is especially well-adapted for use in dentifrices containing cetylpyridinium chloride, which do not attach to the low surface area silica product in a meaningful level and thus remain available for antimicrobial action. Processes for making the silica product including the introduction of sodium sulfate powder during different process steps in order to enhance such a compatibility with CPC are provided. |
申请公布号 |
CA2671798(C) |
申请公布日期 |
2011.06.28 |
申请号 |
CA20072671798 |
申请日期 |
2007.11.08 |
申请人 |
J.M. HUBER CORPORATION |
发明人 |
MCGILL, PATRICK;GALLIS, KARL |
分类号 |
A61K8/25;A61K8/49;A61Q11/00 |
主分类号 |
A61K8/25 |
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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