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    1.
    发明专利
    未知

    公开(公告)号：TR199700241A2

    公开(公告)日：1997-10-21

    申请号：TR9700241

    申请日：1997-03-28

    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 ,  A01N59/00 ,  A23K1/175

    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.

    2.
    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.

    3.
    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.

    PARTIALLY HYDROPHOBIC PRECIPITATED SILICAS
    6.
    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.

    ACIDOS SILICICOS PRECIPITADOS HIDROFOBOS PARCIALES.
    9.
    发明专利
    ACIDOS SILICICOS PRECIPITADOS HIDROFOBOS PARCIALES. 未知

    公开(公告)号：MX9702282A

    公开(公告)日：1997-09-30

    申请号：MX9702282

    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 ,  C01B33/12

    Abstract: ??cidos silícicos precipitados hidrofobos parcial, caracterizados por una humectancia de metanol de 10 a 49%, especialmente con una absorcion de DBP libre de agua mayor a 250 g/100g y con un tamaño medio de partícula de 1 a 12 um y/o contenido de carbono de 0,3 a 1,85 % y/o una pérdida de sequedad de 2,6 a 10,0 % y/o un valor de pH de 5,5 a 10,0, elaborados mediante el mezclado del agente hidrofobo con la suspension del ácido silícico precipitado durante un tiempo de tratamiento muy corto y a valor de pH bajo, se filtra la substancia solida, se lava hasta desalinizarla, se seca, posteriormente se trata de forma térmica y se muele. El ácido silícico precipitado hidrofobo parcial se puede introducir en formulaciones de substancias activas así como en formulaciones de substancias activas de substancias hidrolíticamente sensibles y en antiespumantes.

    PARTIALLY HYDROPHOBICALLY SEDIMENTED SILICIC ACID
    10.
    发明专利
    PARTIALLY HYDROPHOBICALLY SEDIMENTED SILICIC ACID 未知

    公开(公告)号：BG61818B1

    公开(公告)日：1998-06-30

    申请号：BG10136197

    申请日：1997-03-27

    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: The acid can be used in the formulation of active substancesand of hydrolysis-sensible substances and in anti-foaming agents.It has methanol wettness from to 49%, in particular with DBPabsorption, it is anhydrous, its concentration is over 250 g/100g, and the average size of the particles ranges from 1 to 12 m,and/or with carbon content 0.3-1.85%, and/or drying loss from 2.6to 10.0%, and/or pH from 5.5 to 10.0. It is produced when thehydrophobic substance is mixed with the suspension of thesedimented silicic acid for a short time and at low pH. The solidsubstance is filtered, washed to the absence of salts, dried, heattreated and is ground.

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