发明授权
- 专利标题： Stabilization of inorganic pigments in aqueous media
- 专利标题（中）： 水性介质中无机颜料的稳定化
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申请号： US552815申请日： 1995-11-03
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公开(公告)号： US5876493A公开(公告)日： 1999-03-02
- 发明人: Gregory G. Menovcik , Thomas C. Balch , Hilary P. Davis , Paul Dudek
- 申请人： Gregory G. Menovcik , Thomas C. Balch , Hilary P. Davis , Paul Dudek
- 申请人地址： MI Southfield
- 专利权人： BASF Corporation
- 当前专利权人： BASF Corporation
- 当前专利权人地址： MI Southfield
- 主分类号： C09C1/36
- IPC分类号： C09C1/36 ; C09C3/10 ; C09D7/12
摘要：
A method for stabilizing inorganic pigments in aqueous media and waterborne coating compositions is provided. The method comprises forming a pigment treatment composition of a polyester havng an acid number between 15 mg KOH/g and 50 mg KOH/g or a phosphate ester or pyrophosphate ester, having an acid number between 10 mg KOH/g and 50 mg KOH/g, solvent, and an amino functional resin. The composition is then deposited on the pigment. The treated pigment is stable in an aqueous environment and is suitable for waterborne coating compositions.
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