Invention Application
- Patent Title: COARSE CALCINED KAOLIN AND USES THEREOF
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Application No.: PCT/US2018/041047Application Date: 2018-07-06
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Publication No.: WO2019010389A1Publication Date: 2019-01-10
- Inventor: KAMAU, Wilson Wanene , KHOKHANI, Ashok , PORZIO, Robert Shane , FOLEY, Nicholas , ROSANO, William Joseph
- Applicant: BASF CORPORATION
- Applicant Address: 100 Park Avenue Florham Park, New Jersey 07932 US
- Assignee: BASF CORPORATION
- Current Assignee: BASF CORPORATION
- Current Assignee Address: 100 Park Avenue Florham Park, New Jersey 07932 US
- Agency: JACKSON BECKFORD, Shirlene et al.
- Priority: US62/529,800 20170707
- Main IPC: C09C1/42
- IPC: C09C1/42 ; C01B33/40 ; C09D5/16 ; D21H17/03
Abstract:
Kaolin compositions comprising coarse kaolin particles are disclosed herein. The kaolin compositions can include kaolin particles having a GE brightness of at least 78 and a particle size distribution wherein at least 50% by weight of the kaolin particles have an equivalent size diameter (e.s.d.) of 30 μm or greater. In some embodiments, the kaolin compositions can include kaolin particles having a bimodal particle distribution. In other embodiments, the kaolin compositions can include kaolin particles having a low crystalline silica content, such as a crystalline silica content of 0.1% by weight or less and a particle size distribution wherein at least 50% by weight of the kaolin particles have an equivalent size diameter (e.s.d.) of 15 μm or greater. In some embodiments, the kaolin particles can be free of crystalline silica. Methods of making and using the kaolin compositions are also disclosed herein.
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