发明名称 |
PROCESS FOR PREPARING REDISPERSIBLE SURFACE-MODIFIED SILICON DIOXIDE PARTICLES |
摘要 |
Process for preparing surface-modified silicon dioxide particles with a mean particle diameter of at most 100 nm, comprising the steps of: a) providing a predispersion b) high-pressure grinding of the predispersion to form a dispersion c) removing the liquid phase of the dispersion, the predispersion comprising al) surface-modified silicon dioxide particles which are at least partly aggregated, are bonded to the surface-modifying component via Si-O-Si bonds and still have reactive groups on their surface, a2) one or more organosilicon compounds which have at least one silicon-carbon bond and at least one functional group which can react with the reactive groups to form a covalent Si-O-Si bond, and a3) one or more solvents. Redispersible, surface-modified silicon dioxide particles obtainable by this process. Use of these in toner powders, silicone rubber, adhesives and scratch-resistance surface coatings. |
申请公布号 |
WO2010006837(A2) |
申请公布日期 |
2010.01.21 |
申请号 |
WO2009EP56733 |
申请日期 |
2009.06.02 |
申请人 |
EVONIK DEGUSSA GMBH;LORTZ, WOLFGANG;PERLET, GABRIELE;DIENER, UWE;REITZ, SASCHA |
发明人 |
LORTZ, WOLFGANG;PERLET, GABRIELE;DIENER, UWE;REITZ, SASCHA |
分类号 |
C09C1/30;C08K3/36;C09D7/12;C09J11/02;G03G9/097 |
主分类号 |
C09C1/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|