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 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 resuultant 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 |
EP1630136(B1) |
申请公布日期 |
2012.07.11 |
申请号 |
EP20040724741 |
申请日期 |
2004.03.31 |
申请人 |
TOTO LTD. |
发明人 |
SONEZAKI, SHUJI;BANZAI, TOSHIAKI;KANEHIRA, KOKI;YAGI, SHINICHI;OGAMI, YUMI |
分类号 |
C09C1/36;A61K33/00;A61K33/24;A61K41/00;A61K47/02;A61K47/48;B01J31/06;B01J35/00;B01J35/02;C01G23/053;C01G49/06;C02F1/30;C02F1/32;C09C1/00 |
主分类号 |
C09C1/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|