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    3.
    发明专利
    未知

    公开(公告)号：ES2092850T3

    公开(公告)日：1996-12-01

    申请号：ES94111686

    申请日：1994-07-27

    Applicant: DEGUSSA

    Inventor： ESCH HEINZ ,  KUHLMANN ROBERT ,  NEUMULLER MATTHIAS ,  OTTO KARIN DR ,  RAUSCH RALF DR

    IPC: A61K8/00 ,  A61K8/25 ,  A61Q11/00 ,  C01B33/193

    Abstract: Precipitated silica having a BET surface area of 10-130 m /g, a CTAB surface area of 10-70 m /g, a mean particle diameter of 5-20 mu m, a Cu abrasion in 10% strength glycerol (glycerine) dispersion of 4-50 mg and a thickening behaviour in CMC solution (20% strength dispersion) of 300-3500 mPa.s is prepared by simultaneously adding alkali metal silicate (weight ratio SiO2: alkali metal oxide = 2.5-3.9:1) and a mineral acid to an initial charge of water which has been adjusted to a pH of from 7.0 to 9.9 or from 10.0 to 10.7 by addition of water, keeping the pH constant between 7.0 and 9.9 or 10.0 and 10.7, with the initial precipitation temperature being 50-90 DEG C and a viscosity increase commencing at the latest after 25% of the precipitation time, setting the pH to /= 160 g/l to 240 g/l, separating off the solid by filtration and washing, drying and milling it. The precipitated silica can be used as abrasive and/or thickening component in toothpastes.

    5.
    发明专利
    未知

    公开(公告)号：DK1215249T3

    公开(公告)日：2004-07-26

    申请号：DK01128693

    申请日：2001-12-01

    Applicant: DEGUSSA

    Inventor： OTTO KARIN DR ,  ZOCH HEINZ DR ,  KOPIETZ JAN

    IPC: C09C1/56 ,  C08K9/08 ,  C09C1/58 ,  C09C3/10 ,  C09D11/00

    Abstract: A beaded black containing at least one pelletizing additive and at least one synthetic oil. The beaded black can be produced in a pelletizing machine and used as a filler and/or pigment in rubber and plastic articles and as a pigment for the production of printing inks.

    8.
    发明专利
    未知

    公开(公告)号：DK0643015T3

    公开(公告)日：1996-12-23

    申请号：DK94111686

    申请日：1994-07-27

    Applicant: DEGUSSA

    Inventor： ESCH HEINZ ,  KUHLMANN ROBERT ,  NEUMUELLER MATTHIAS ,  OTTO KARIN DR ,  RAUSCH RALF DR

    IPC: A61K8/00 ,  A61K8/25 ,  A61Q11/00 ,  C01B33/193

    Abstract: Precipitated silica having a BET surface area of 10-130 m /g, a CTAB surface area of 10-70 m /g, a mean particle diameter of 5-20 mu m, a Cu abrasion in 10% strength glycerol (glycerine) dispersion of 4-50 mg and a thickening behaviour in CMC solution (20% strength dispersion) of 300-3500 mPa.s is prepared by simultaneously adding alkali metal silicate (weight ratio SiO2: alkali metal oxide = 2.5-3.9:1) and a mineral acid to an initial charge of water which has been adjusted to a pH of from 7.0 to 9.9 or from 10.0 to 10.7 by addition of water, keeping the pH constant between 7.0 and 9.9 or 10.0 and 10.7, with the initial precipitation temperature being 50-90 DEG C and a viscosity increase commencing at the latest after 25% of the precipitation time, setting the pH to /= 160 g/l to 240 g/l, separating off the solid by filtration and washing, drying and milling it. The precipitated silica can be used as abrasive and/or thickening component in toothpastes.

    9.
    发明专利
    未知

    公开(公告)号：AT142986T

    公开(公告)日：1996-10-15

    申请号：AT94111686

    申请日：1994-07-27

    Applicant: DEGUSSA

    Inventor： ESCH HEINZ ,  KUHLMANN ROBERT ,  NEUMUELLER MATTHIAS ,  OTTO KARIN DR ,  RAUSCH RALF DR

    IPC: A61K8/00 ,  A61K8/25 ,  A61Q11/00 ,  C01B33/193

    Abstract: Precipitated silica having a BET surface area of 10-130 m /g, a CTAB surface area of 10-70 m /g, a mean particle diameter of 5-20 mu m, a Cu abrasion in 10% strength glycerol (glycerine) dispersion of 4-50 mg and a thickening behaviour in CMC solution (20% strength dispersion) of 300-3500 mPa.s is prepared by simultaneously adding alkali metal silicate (weight ratio SiO2: alkali metal oxide = 2.5-3.9:1) and a mineral acid to an initial charge of water which has been adjusted to a pH of from 7.0 to 9.9 or from 10.0 to 10.7 by addition of water, keeping the pH constant between 7.0 and 9.9 or 10.0 and 10.7, with the initial precipitation temperature being 50-90 DEG C and a viscosity increase commencing at the latest after 25% of the precipitation time, setting the pH to /= 160 g/l to 240 g/l, separating off the solid by filtration and washing, drying and milling it. The precipitated silica can be used as abrasive and/or thickening component in toothpastes.

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