- 专利标题： Aqueous dispersion of hydrophobically modified pigment particles
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申请号： US15216413申请日： 2016-07-21
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公开(公告)号： US09957403B2公开(公告)日： 2018-05-01
- 发明人: Joseph Jankolovits , Alexander Katz , James C. Bohling , Clayton J. Radke , Antony K. Van Dyk , John A. Roper, III
- 申请人： DOW GLOBAL TECHNOLOGIES LLC , THE REGENTS OF THE UNIVERSITY OF CALIFORNIA , Rohm and Haas Company
- 申请人地址： US CA Oakland US MI Midland US PA Philadelphia
- 专利权人： The Regents of the University of California,Dow Global Technologies LLC,Rohm and Haas Company
- 当前专利权人： The Regents of the University of California,Dow Global Technologies LLC,Rohm and Haas Company
- 当前专利权人地址： US CA Oakland US MI Midland US PA Philadelphia
- 代理机构： Riverside Law LLP
- 主分类号： C09D17/00
- IPC分类号： C09D17/00 ; C09C1/36 ; C09C1/40 ; C09C3/12 ; C09C1/02 ; C09C1/04 ; C09C1/24 ; C09C1/30 ; C09D101/28 ; C09D133/02
摘要：
The present invention relates to a composition comprising a) a stable aqueous dispersion of inorganic pigment particles hydrophobically modified with covalently bonded polysiloxane or silyl groups; and b) a polymeric anionic dispersant; wherein the hydrophobically modified inorganic pigment particles have an average particle size in the range of from 200 nm to 10 μm, and the solids content of the hydrophobically modified inorganic pigment particles is from 10 to 80 weight percent, based on the weight of inorganic pigment particles and water. The composition of the present invention provides a way to improve water resistance in coatings formulations.