Method for making precipitated silica compositions

专利名称：Method for making precipitated silica

compositions and products thereof

发明人：Yung-Hui Huang申请号：US11170345申请日：20050629

公开号：US20070003465A1公开日：20070104

摘要：A method of making abrasive compositions, and more particularly, it relates to amethod of making precipitated silica abrasive compositions having excellent cleaningperformance and lower abrasiveness with post-reactor sizing of the abrasive particlesbeing performed directly via wet comminution and centrifugation, optionally followed byhydraulic chamber press filtering combined with vacuum dewatering and de-agglomeration is provided. By targeting a specific particle size range, it has beendetermined that higher pellicle film cleaning levels may be achieved without alsoincreasing the dentin abrasion properties of the silica products themselves. As a result,dentifrices including such classified abrasive silica products, exhibiting particularlydesirable cleaning benefits, can be provided for improved tooth polishing, whitening, andthe like, without deleteriously affecting the hard tooth surfaces. Also encompassedwithin this invention also are products of this selective process scheme and dentifricescontaining such particularly manufactured and classified silica products.

申请人：Yung-Hui Huang

地址：Bel Air MD US

国籍：US

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