发明名称 |
PROCESS FOR IMPROVING HIDING EFFICIENCY IN PIGMENTED PAINTS |
摘要 |
The present invention relates to a process comprising the steps of a) contacting an aqueous dispersion of a TiO2 slurry containing adsorbing dispersant with an adsorbing latex to form a mixture, wherein the pH of the mixture of the TiO2 slurry and adsorbing latex are sufficiently high to inhibit interaction between the TiO2 and the adsorbing latex; then b) lowering the pH of the mixture of step a) sufficiently to promote interaction between the TiO2 and the adsorbing latex, thereby forming a composite. The process of the present invention provides for improved hiding and reduced grit for coatings compositions. |
申请公布号 |
EP2729537(A1) |
申请公布日期 |
2014.05.14 |
申请号 |
EP20110868909 |
申请日期 |
2011.07.05 |
申请人 |
ROHM AND HAAS COMPANY |
发明人 |
BOHLING, JAMES;FRADKIN, DEBORAH;GAO, WEI;HOOK, JOHN, WILLIAM, III;WANG, TAO;WANG, TONY |
分类号 |
C09C3/10;C08K3/08;C08K3/20;C08K3/22;C08L7/02;C09C1/36;C09D5/02;C09D7/12;C09D7/14;C09D133/08;C09D135/06 |
主分类号 |
C09C3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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