发明授权
US06395081B1 Methods for producing titanium dioxide pigments having improved gloss at low temperatures
有权
用于生产在低温下具有改善的光泽度的二氧化钛颜料的方法
- 专利标题： Methods for producing titanium dioxide pigments having improved gloss at low temperatures
- 专利标题（中）： 用于生产在低温下具有改善的光泽度的二氧化钛颜料的方法
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申请号： US09705530申请日： 2000-11-03
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公开(公告)号： US06395081B1公开(公告)日： 2002-05-28
- 发明人: Michael Hiew , Yarw-Nan Wang , Les Hamor , Brian Tear , Robert McIntyre
- 申请人： Michael Hiew , Yarw-Nan Wang , Les Hamor , Brian Tear , Robert McIntyre
- 主分类号： C09C136
- IPC分类号： C09C136
摘要：
The present invention provides methods of preparing a titanium dioxide pigment having improved gloss properties which involves heating an aqueous slurry of base titanium dioxide pigment to a temperature below about 75° C., coating the base titanium dioxide pigment with a silica compound at a temperature below about 75° C. to form a silica coated titanium dioxide pigment; and coating the silica coated titanium dioxide pigment with an alumina compound at a temperature below about 75° C. to form the titanium dioxide pigment having improved gloss.
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