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    11.
    发明专利
    未知

    公开(公告)号：NO20014782D0

    公开(公告)日：2001-10-01

    申请号：NO20014782

    申请日：2001-10-01

    Applicant: DEGUSSA

    Inventor： SCHUBERT JUERGEN ,  HELLWIG KLAUS-DIETER ,  MUELLER ASTRID

    IPC: C01B33/12 ,  B41M5/00 ,  B41M5/50 ,  B41M5/52 ,  C01B33/143 ,  C01B33/193 ,  C09C1/30 ,  C09C3/06 ,  C09D129/04 ,  D21H19/40 ,  C01B

    Abstract: Al-doped precipitated silica particles have a BET surface area above 300 m /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.

    13.
    发明专利
    未知

    公开(公告)号：DK0798348T3

    公开(公告)日：1999-08-30

    申请号：DK97104825

    申请日：1997-03-21

    Applicant: DEGUSSA

    Inventor： MEIER KARL ,  OELMUELLER ROLF ,  MUELLER ASTRID ,  LUX HEINZ-GUENTHER ,  RAMB ANJA

    IPC: C01B33/18 ,  A01N25/08 ,  A01N25/22 ,  A01N57/12 ,  B01D19/04 ,  C09C1/30 ,  C11D3/12

    Abstract: Partially hydrophobic precipitated silica with a methanol crosslinking potential of 10-49% is new. When anhydrous, the silica has a DBP absorption > 250 g/100 g. The average particle size is 1-12 mu m and the silica has a carbon content of 0.3-1.85 %, and when dried, it loses 2.6-10 % of its weight. It has a pH of 5.5-10. The silica is prepared by mixing a silica suspension (which has been prepared using known methods) with a material that gives the silica hydrophobic properties. The mixing takes place for a very short time at conditions of low pH and high shear. The resulting suspension is filtered and washed in salt-free conditions, and the filter cake is dried, thermally treated and powdered.

    14.
    发明专利
    未知

    公开(公告)号：BR9701582A

    公开(公告)日：1998-08-18

    申请号：BR9701582

    申请日：1997-03-31

    Applicant: DEGUSSA

    Inventor： OELMUELLER ROLF ,  MUELLER ASTRID ,  MEIER KARL ,  LUX HEINZ-GUENTER ,  RAMB ANJA

    IPC: C01B33/18 ,  A01N25/08 ,  A01N25/22 ,  A01N57/12 ,  B01D19/04 ,  C09C1/30 ,  C11D3/12 ,  C07F7/02

    Abstract: Partially hydrophobic precipitated silica with a methanol crosslinking potential of 10-49% is new. When anhydrous, the silica has a DBP absorption > 250 g/100 g. The average particle size is 1-12 mu m and the silica has a carbon content of 0.3-1.85 %, and when dried, it loses 2.6-10 % of its weight. It has a pH of 5.5-10. The silica is prepared by mixing a silica suspension (which has been prepared using known methods) with a material that gives the silica hydrophobic properties. The mixing takes place for a very short time at conditions of low pH and high shear. The resulting suspension is filtered and washed in salt-free conditions, and the filter cake is dried, thermally treated and powdered.

    15.
    发明专利
    未知

    公开(公告)号：NO971450D0

    公开(公告)日：1997-03-26

    申请号：NO971450

    申请日：1997-03-26

    Applicant: DEGUSSA

    Inventor： LUX HEINZ-GUENTER ,  MEIER KARL ,  MUELLER ASTRID ,  OELMUELLER ROLF ,  RAMB ANJA

    IPC: C01B33/18 ,  A01N25/08 ,  A01N25/22 ,  A01N57/12 ,  B01D19/04 ,  C09C1/30 ,  C11D3/12

    Abstract: Partially hydrophobic precipitated silica with a methanol crosslinking potential of 10-49% is new. When anhydrous, the silica has a DBP absorption > 250 g/100 g. The average particle size is 1-12 mu m and the silica has a carbon content of 0.3-1.85 %, and when dried, it loses 2.6-10 % of its weight. It has a pH of 5.5-10. The silica is prepared by mixing a silica suspension (which has been prepared using known methods) with a material that gives the silica hydrophobic properties. The mixing takes place for a very short time at conditions of low pH and high shear. The resulting suspension is filtered and washed in salt-free conditions, and the filter cake is dried, thermally treated and powdered.

    16.
    发明专利
    未知

    公开(公告)号：AT250558T

    公开(公告)日：2003-10-15

    申请号：AT01119007

    申请日：2001-08-07

    Applicant: DEGUSSA

    Inventor： SCHUBERT JUERGEN DR ,  HELLWIG KLAUS-DIETER ,  MUELLER ASTRID

    IPC: C01B33/12 ,  B41M5/00 ,  B41M5/50 ,  B41M5/52 ,  C01B33/143 ,  C01B33/193 ,  C09C1/30 ,  C09C3/06 ,  C09D129/04 ,  D21H19/40

    Abstract: Al-doped precipitated silica particles have a BET surface area above 300 m /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.

    PARTIALLY HYDROPHOBIC PRECIPITATED SILICAS
    18.
    发明专利
    PARTIALLY HYDROPHOBIC PRECIPITATED SILICAS 未知

    公开(公告)号：CA2201186C

    公开(公告)日：2000-10-10

    申请号：CA2201186

    申请日：1997-03-27

    Applicant: DEGUSSA

    Inventor： RAMB ANJA ,  MUELLER ASTRID ,  MEIER KARL ,  LUX HEINZ-GUENTER ,  OELMUELLER ROLF

    IPC: C01B33/18 ,  A01N25/08 ,  A01N25/22 ,  A01N57/12 ,  B01D19/04 ,  C09C1/30 ,  C11D3/12 ,  B01J20/10

    Abstract: Partially hydrophobic precipitated silica with a methanol crosslinking potential of 10-49% is new. When anhydrous, the silica has a DBP absorption > 250 g/100 g. The average particle size is 1-12 .mu.m and the silica has a carbon content of 0.3-1.85 %, and when dried, it loses 2.6-10 % of its weight. It has a pH of 5.5-10. The silica is prepared by mixing a silica suspension (which has been prepared using known methods) with a material that gives the silica hydrophobic properties. The mixing takes place for a very short time at conditions of low pH and high shear. The resulting suspension is filtered and washed in salt-free conditions, and the filter cake is dried, thermally treated and powdered.

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