William J. HAGAR,Terry W. NASSIVERA,Karl W. GALLIS
申请号：
US16642069
公开号：
US20200206107A1
申请日:
2018.08.28
申请国别(地区):
US
年份:
2020
代理人:
摘要：
Silica particles having ad50 median particle size of at least 6 μm, a ratio of (d90−；d10)/d50 from 1.1 to 2.4, a RDA at 20 wt. % loading from 40 to 200, and a sphericity factor (S80) of at least 0.9, are disclosed, as well as methods for making these silica particles, and dentifrice compositions containing the silica particles.
