公开(公告)号：US11548788B2

公开(公告)日：2023-01-10

申请号：US16642240

申请日：2018-08-24

申请人： Evonik Operations GmbH

发明人： John M. Cornelius ,  William J. Hagar ,  Karl W. Gallis ,  Terry W. Nassivera

IPC分类号： C01B33/193 ,  A61K8/02 ,  A61K8/25 ,  A61Q11/00

摘要： Spherical silica and/or silicate particles having a d50 median particle size from 1 to 5 μm, a d95 particle size less than 8 μm, an oil absorption from 40 to 100 cc/100 g, a pack density from 20 to 60 lb/ft3, and a sphericity factor (S80) of at least 0.9, are disclosed, as well as methods for making these spherical particles, and dentifrice compositions containing the spherical particles.

公开(公告)号：US20210309529A1

公开(公告)日：2021-10-07

申请号：US17251334

申请日：2019-06-12

申请人： Evonik Operations GmbH

发明人： Karl W. Gallis ,  William J. Hagar ,  Terry W. Nassivera ,  Lawrence Edward Dolan ,  Sanjeev Midha ,  Eva Schneiderman

IPC分类号： C01B33/187

摘要： Silica particles having a d50 median particle size from 8 to 20 μm, a sphericity factor (S80) of at least 0.9, a BET surface area from 0.1 to 8 m2/g, a total mercury intrusion pore volume from 0.35 to 0.8 cc/g, and a loss on ignition from 3 to 7 wt. %, are disclosed, as well as methods for making these silica particles, and dentifrice compositions containing the silica particles.

公开(公告)号：US12037252B2

公开(公告)日：2024-07-16

申请号：US16470467

申请日：2017-12-01

申请人： Evonik Operations GmbH

发明人： Karl W. Gallis ,  William J. Hagar ,  Terry W. Nassivera ,  Lawrence Edward Dolan ,  Sanjeev Midha ,  Eva Schneiderman

IPC分类号： C01B33/18 ,  C01B33/193

CPC分类号： C01B33/193 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/14

摘要： Silica particles having a BET surface area from 0.1 to 7 m2/g, a pack density from 35 to 55 lb/ft3, an Einlehner abrasion value from 8 to 25 mg lost/100,000 revolutions, a total mercury intrusion pore volume from 0.7 to 1.2 cc/g, and a stannous compatibility from 70 to 99%, are disclosed, as well as methods for making these silica particles.

公开(公告)号：US11285088B2

公开(公告)日：2022-03-29

申请号：US16642069

申请日：2018-08-28

申请人： Evonik Operations GmbH

发明人： William J. Hagar ,  Terry W. Nassivera ,  Karl W. Gallis

IPC分类号： A61K8/25 ,  A61K8/02

摘要： Silica particles having a d50 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.