发明授权
- 专利标题: Fine platy kaolin composition
- 专利标题(中): 精细高岭土组成
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申请号: US10531257申请日: 2003-12-15
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公开(公告)号: US07806978B2公开(公告)日: 2010-10-05
- 发明人: Robert J. Pruett , Jun Yuan , Bomi M. Bilimoria , Roger W. Wygant , Anthony V. Lyons
- 申请人: Robert J. Pruett , Jun Yuan , Bomi M. Bilimoria , Roger W. Wygant , Anthony V. Lyons
- 申请人地址: US GA Roswell
- 专利权人: Imerys Pigments, Inc.
- 当前专利权人: Imerys Pigments, Inc.
- 当前专利权人地址: US GA Roswell
- 代理机构: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- 国际申请: PCT/US03/39883 WO 20031215
- 国际公布: WO2004/061014 WO 20040722
- 主分类号: C04B14/04
- IPC分类号: C04B14/04 ; C01F5/24
摘要:
The present invention relates to a kaolin composition having improved physical properties, for example, for use in the production of paper products. The composition can comprise kaolin having a shape factor of at least about 20. The kaolin can have a particle size distribution such that at least about 94% by weight of the kaolin can have an esd of less than about 2 μm and/or at least about 80% by weight of the kaolin can have an esd of less than 1 μm. The amount of the kaolin having an esd of less than about 0.25 μm can range from about 25% to about 60% by weight. The Hercules viscosity of the kaolin product is less than 4000 rpm at 18 dynes at 63% solids and less than 1500 rpm at 18 dynes at 69% solids when measured using the “A” bob. The present invention also relates to an improved method for making the kaolin product from sedimentary kaolin.
公开/授权文献
- US20060124033A1 Fine platy kaolin composition 公开/授权日:2006-06-15
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