发明名称 |
TREATED INORGANIC PIGMENTS HAVING IMPROVED DISPERSABILITY AND USE THEREOF IN COATING COMPOSITIONS |
摘要 |
The disclosure provides a coating composition comprising a treated inorganic core particle, having improved dispersability, prepared by a process comprising: heating a slurry comprising porous silica treated inorganic core particle and water at a temperature of at least about 90° C., more typically about 93 to about 97° C., still more typically about 95 to about 97° C.; and adding a soluble alumina source to the slurry while maintaining the pH at about 8.0 to 9.5 to form an alumina treatment on the porous silica treated inorganic core particle; wherein the treated inorganic core particle does not comprise dense silica or alumina treatments, and has silica present in the amount of about 7% to about 14% and alumina present in the amount of about 4.0% to about 8.0%; and wherein the particle to particle surface treatments are substantially homogeneous. |
申请公布号 |
EP2771410(A1) |
申请公布日期 |
2014.09.03 |
申请号 |
EP20120778016 |
申请日期 |
2012.10.11 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
DIEBOLD, MICHAEL PATRICK;KRAITER, DANIEL C.;RUSNAK, ERIC;SHIH, AGINGU |
分类号 |
C09C1/02;B01J13/02;B01J13/22;B82Y30/00;C08K3/00;C09C1/36;C09C3/06;C09D7/12 |
主分类号 |
C09C1/02 |
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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