发明名称 |
DOTIERTE FÄLLUNGSKIESELSÄURE |
摘要 |
Al-doped precipitated silica particles have a BET surface area above 300 m<2>/g and uniformly distributed Al. An Independent claim is also included for production of the doped silica in which an Al salt solution is added in step (a) and (c) of the following process: (a) heating a water/Na silicate mixture to 70-86 degrees C and neutralizing the Na silicate with H2SO4; (b) ageing the solution for 30-120 minutes; (c) adjusting to pH 3-7 by addition of H2SO4; and (d) filtering and spray drying and milling the washed filter cake. |
申请公布号 |
AT250558(T) |
申请公布日期 |
2003.10.15 |
申请号 |
AT20010119007T |
申请日期 |
2001.08.07 |
申请人 |
DEGUSSA AG |
发明人 |
SCHUBERT, JUERGEN, DR.;HELLWIG, KLAUS-DIETER;MUELLER, ASTRID |
分类号 |
C01B33/12;B41M5/00;B41M5/50;B41M5/52;C01B33/143;C01B33/193;C09C1/30;C09C3/06;C09D129/04;D21H19/40;(IPC1-7):C01B33/193 |
主分类号 |
C01B33/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|