发明申请
US20090306266A1 Process for grinding minerals in aqueous dispersion using a dispersing agent comprising homopolymers and/or copolymers of (meth)acrylic acid
有权
使用包含（甲基）丙烯酸的均聚物和/或共聚物的分散剂研磨水性分散体中矿物的方法
- 专利标题： Process for grinding minerals in aqueous dispersion using a dispersing agent comprising homopolymers and/or copolymers of (meth)acrylic acid
- 专利标题（中）： 使用包含（甲基）丙烯酸的均聚物和/或共聚物的分散剂研磨水性分散体中矿物的方法
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申请号： US12454790申请日： 2009-05-22
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公开(公告)号： US20090306266A1公开(公告)日： 2009-12-10
- 发明人: Marianne Creamer , Robert Krasnansky , Joseph Manna , Daniele Cristina Santos
- 申请人： Marianne Creamer , Robert Krasnansky , Joseph Manna , Daniele Cristina Santos
- 主分类号： C09B67/22
- IPC分类号： C09B67/22 ; C09B67/04
摘要：
The process of the present invention produces an aqueous dispersion of mineral materials, suitable for use in pigments and other coatings, by introducing a fully neutralized dispersing agent to an aqueous dispersion of coarse mineral materials, grinding the aqueous dispersion and, during grinding, adding a partially neutralized dispersing agent to the aqueous dispersion. The process of the present invention produces aqueous dispersions of very fine particles, having a solids content of at least 75% by weight, based on the total weight of the aqueous dispersion, and wherein 95% or more of the particles are below 2 microns.
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