发明申请
- 专利标题: PROCESS FOR IMPROVING HIDING EFFICIENCY IN PIGMENTED PAINTS
- 专利标题(中): 提高印花油漆效果的方法
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申请号: US14131071申请日: 2011-07-05
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公开(公告)号: US20150025172A1公开(公告)日: 2015-01-22
- 发明人: James C. Bohling , Deborah G. Fradkin , Wei Gao , John W. Hook, III , Tao Wang , Tao Wang
- 申请人: James C. Bohling , Deborah G. Fradkin , Wei Gao , John W. Hook, III , Tao Wang , Tao Wang
- 国际申请: PCT/CN2011/076838 WO 20110705
- 主分类号: C09D133/08
- IPC分类号: C09D133/08 ; C08K3/20 ; C08K3/22 ; C09D7/12
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.
公开/授权文献
- US09518192B2 Process for improving hiding efficiency in pigmented paints 公开/授权日:2016-12-13
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