发明名称 |
SURFACE-MODIFIED TITANIUM DIOXIDE FINE PARTICLES AND DISPERSION COMPRISING THE SAME, AND METHOD FOR PRODUCING THE SAME |
摘要 |
<p>Surface-modified titanium dioxide fine particles which have a surface chemically modified with a hydrophilic polymer, wherein a carboxyl group of the hydrophilic polymer and titanium dioxide are bound through an ester bonding; and a method for producing the surface-modified titanium dioxide fine particles, which comprises mixing a dispersion comprising titanium dioxide fine particles having a particle size of 2 to 200 nm and a solution of a water-soluble polymer, heating the resultant mixture to a temperature of 80 to 220°C, to thereby bind both the components through an ester bonding, and removing an unbound water-soluble polymer, to purify the resultant particles. The surface -modified titanium dioxide fine particles exhibit excellent dispersibility and stability in an aqueous solvent over a wide pH region including a neutral range.</p> |
申请公布号 |
WO2004087577(A1) |
申请公布日期 |
2004.10.14 |
申请号 |
WO2004JP04635 |
申请日期 |
2004.03.31 |
申请人 |
TOTO LTD.;SONEZAKI, SHUJI;BANZAI, TOSHIAKI;KANEHIRA, KOKI;YAGI, SHINICHI;OGAMI, YUMI |
发明人 |
SONEZAKI, SHUJI;BANZAI, TOSHIAKI;KANEHIRA, KOKI;YAGI, SHINICHI;OGAMI, YUMI |
分类号 |
A61K33/24;A61K41/00;B01J31/06;B01J35/00;C02F1/30;C02F1/32;C09C1/36;(IPC1-7):C01G23/047;A61K33/00;B01J35/02;A61K47/48;A61K47/02 |
主分类号 |
A61K33/24 |
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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