发明授权
US08916236B2 Method of forming a (rutile) titanium dioxide-coated platelet-like pigment
有权
形成(金红石)二氧化钛涂覆的血小板样颜料的方法
- 专利标题: Method of forming a (rutile) titanium dioxide-coated platelet-like pigment
- 专利标题(中): 形成(金红石)二氧化钛涂覆的血小板样颜料的方法
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申请号: US12527440申请日: 2008-02-18
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公开(公告)号: US08916236B2公开(公告)日: 2014-12-23
- 发明人: Patrice Bujard
- 申请人: Patrice Bujard
- 申请人地址: US NY Tarrytown
- 专利权人: Ciba Corporation
- 当前专利权人: Ciba Corporation
- 当前专利权人地址: US NY Tarrytown
- 代理商 Shruti Costales
- 优先权: EP07103135 20070227; EP07104054 20070313
- 国际申请: PCT/EP2008/051910 WO 20080218
- 国际公布: WO2008/104467 WO 20080904
- 主分类号: B05D7/00
- IPC分类号: B05D7/00 ; C09C1/00 ; C01G23/053 ; C09C1/36
摘要:
The invention relates to a method of forming (rutile) titanium dioxide-coated platelet-like pigments in which hydrous titanium dioxide is deposited on platelet-like particles followed by calcining, comprising (a) effecting the titanium deposit in the presence of an α-hydroxy carboxylic acid, especially glycolic acid, or oxalic acid, and an amino acid, especially glycine, alanine, valine, aspartic acid (α-, β- and γ-form); or an amino acid; to the pigments obtained by the method and the use thereof. The method can work in the absence of exogenous metal and Ti(III). The rutile TiO2-coated substrate of the present invention has at least the same advantages and characteristics of a tin containing product which includes luster, color, color homogeneity and few small particle formation during manufacture.
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