发明名称 |
Titanium dioxide pigments |
摘要 |
A method for the manufacture of a titanium dioxide pigment comprises mixing a suspension of titanium dioxide with a reagent formed by reacting concentrated phosphoric acid with aluminium or an aluminium compound at elevated temperature and adding an alkaline compound to the suspension until a pH value of at least 3.5 is achieved. A novel pigment which can be prepared by the method of the invention comprises titanium dioxide, the particles of which have a surface coating of aluminium phosphate in which the molar ratio of aluminium to phosphorus lies in the range 1.8:1 to 1:1.4 Al:P. The pigments prepared according to the invention are useful in the preparation of paper laminates. |
申请公布号 |
EP0753546(A3) |
申请公布日期 |
1997.04.16 |
申请号 |
EP19960304395 |
申请日期 |
1996.06.12 |
申请人 |
TIOXIDE GROUP SERVICES LIMITED |
发明人 |
BANFORD, JONATHAN;MAUD, GEOFFREY ELLIOTT;DEMOSTHENOUS, MARIA LEONIDA |
分类号 |
C09C1/36;C09C3/06;C09D11/00;(IPC1-7):C09C1/36 |
主分类号 |
C09C1/36 |
代理机构 |
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代理人 |
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地址 |
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