IMPROVED TITANIUM DIOXIDE PIGMENT COMPOSITE AND METHOD OF MAKING SAME
摘要
<p>A process for producing an improved titanium dioxide pigment composite is provided, as are particles produced thereby. The process comprises producing a slurry comprising titanium dioxide particles, leaching alumina from the surface of the titanium dioxide particles in the presence of a soluble phosphate and precipitating aluminum phosphate from the slurry onto the surface of the titanium dioxide particles thereby forming a uniform coating of aluminum phosphate on the surfaces of the titanium dioxide particles. An anionic poly-electrolyte can be added to the resulting slurry. The slurry can then be treated such that the anionic poly-electrolyte forms an additional coating on the aluminum phosphate- coated titanium dioxide particles.</p>
申请公布号
WO2008125904(A3)
申请公布日期
2009.04.23
申请号
WO2007IB04524
申请日期
2007.10.29
申请人
THE NATIONAL TITANIUM DIOXIDE CO., LTD. (CRISTAL);TRABZUNI, FADI, MOHAMMED, SAEED;GOPALKRISHNAN, CHATHANGAT, CHEROOLIL