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    11.
    发明专利
    未知

    公开(公告)号：ES2141693T1

    公开(公告)日：2000-04-01

    申请号：ES98116279

    申请日：1998-08-28

    Applicant: DEGUSSA

    Inventor： UHRLANDT STEFAN DR ,  SIRAY MUSTAFA DR ,  BLUME ANKE DR ,  FREUND BURKHARD DR

    IPC: C01B33/193 ,  C08K3/36 ,  C01B33/187

    Abstract: New precipitated silica has a BET surface of 120-300 m /g, a CTAB surface of 100-300 m /g, a BET/CTAB ratio of 0.8-1.3, a Sears number (0.1N-sodium hydroxide required) of 6-25 ml, a DBP number of 150-300 g/100 g, a WK coefficient of less than 3.4 and particle sizes of less than 1.0 and 1.0-100 microns for degraded and undegradable particles respectively. Independent claims are also included for (a) a process for the production of this precipitated silica by reacting alkali silicate (preferably sodium waterglass) with mineral acid (preferably sulphuric acid) at 60-95 degrees C and pH 7.0-11.0 with continuous stirring, continuing reaction to a solid content of 40-100 g/l, adjusting to pH 3-5, filtering off the silica, washing, drying and possibly milling or granulating, (b) vulcanisable rubber mixtures and vulcanised rubber containing this silica as a filler.

    14.
    发明专利
    未知

    公开(公告)号：DK0901986T3

    公开(公告)日：2002-05-21

    申请号：DK98116279

    申请日：1998-08-28

    Applicant: DEGUSSA

    Inventor： UHRLANDT STEFAN DR ,  SIRAY MUSTAFA DR ,  BLUME ANKE DR ,  FREUND BURKHARD DR

    IPC: C01B33/193 ,  C08K3/36 ,  C01B33/187

    Abstract: New precipitated silica has a BET surface of 120-300 m /g, a CTAB surface of 100-300 m /g, a BET/CTAB ratio of 0.8-1.3, a Sears number (0.1N-sodium hydroxide required) of 6-25 ml, a DBP number of 150-300 g/100 g, a WK coefficient of less than 3.4 and particle sizes of less than 1.0 and 1.0-100 microns for degraded and undegradable particles respectively. Independent claims are also included for (a) a process for the production of this precipitated silica by reacting alkali silicate (preferably sodium waterglass) with mineral acid (preferably sulphuric acid) at 60-95 degrees C and pH 7.0-11.0 with continuous stirring, continuing reaction to a solid content of 40-100 g/l, adjusting to pH 3-5, filtering off the silica, washing, drying and possibly milling or granulating, (b) vulcanisable rubber mixtures and vulcanised rubber containing this silica as a filler.

    15.
    发明专利
    未知

    公开(公告)号：DE59803001D1

    公开(公告)日：2002-03-21

    申请号：DE59803001

    申请日：1998-08-28

    Applicant: DEGUSSA

    Inventor： UHRLANDT STEFAN DR ,  SIRAY MUSTAFA DR ,  BLUME ANKE DR ,  FREUND BURKHARD DR

    IPC: C01B33/193 ,  C08K3/36 ,  C01B33/187

    Abstract: New precipitated silica has a BET surface of 120-300 m /g, a CTAB surface of 100-300 m /g, a BET/CTAB ratio of 0.8-1.3, a Sears number (0.1N-sodium hydroxide required) of 6-25 ml, a DBP number of 150-300 g/100 g, a WK coefficient of less than 3.4 and particle sizes of less than 1.0 and 1.0-100 microns for degraded and undegradable particles respectively. Independent claims are also included for (a) a process for the production of this precipitated silica by reacting alkali silicate (preferably sodium waterglass) with mineral acid (preferably sulphuric acid) at 60-95 degrees C and pH 7.0-11.0 with continuous stirring, continuing reaction to a solid content of 40-100 g/l, adjusting to pH 3-5, filtering off the silica, washing, drying and possibly milling or granulating, (b) vulcanisable rubber mixtures and vulcanised rubber containing this silica as a filler.

    Carbon black, process of its preparation and use
    17.
    发明专利
    Carbon black, process of its preparation and use 未知

    公开(公告)号：CZ2002549A3

    公开(公告)日：2002-10-16

    申请号：CZ2002549

    申请日：2002-02-13

    Applicant: DEGUSSA

    Inventor： FREUND BURKHARD DR

    IPC: B29C48/03 ,  B29K105/16 ,  C08K3/04 ,  C09C1/48 ,  C09C1/50

    Abstract: Carbon black with a CTAB surface area from about 10 to 35 m2/g and a DBP absorption from about 40 to 180 ml/100 g, the DELTAD50 value being at least 340 nm. The carbon black may be produced in a furnace-black reactor from a liquid carbon-black raw material and gaseous carbon-black raw material injected into a constriction in the reactor. Compared to other forms of carbon black, the carbon blacks of the present invention have advantageous properties, such as improved dispersibility, and may be economically and conveniently used in rubber mixtures, particularly in those used to produce extrusion profiles.

    20.
    发明专利
    未知

    公开(公告)号：DE19740440A1

    公开(公告)日：1999-03-18

    申请号：DE19740440

    申请日：1997-09-15

    Applicant: DEGUSSA

    Inventor： UHRLANDT STEFAN DR ,  SIRAY MUSTAFA DR ,  BLUME ANKE DR ,  FREUND BURKHARD DR

    IPC: C01B33/193 ,  C08K3/36 ,  C01B33/187 ,  C09C1/30 ,  B60C1/00

    Abstract: New precipitated silica has a BET surface of 120-300 m /g, a CTAB surface of 100-300 m /g, a BET/CTAB ratio of 0.8-1.3, a Sears number (0.1N-sodium hydroxide required) of 6-25 ml, a DBP number of 150-300 g/100 g, a WK coefficient of less than 3.4 and particle sizes of less than 1.0 and 1.0-100 microns for degraded and undegradable particles respectively. Independent claims are also included for (a) a process for the production of this precipitated silica by reacting alkali silicate (preferably sodium waterglass) with mineral acid (preferably sulphuric acid) at 60-95 degrees C and pH 7.0-11.0 with continuous stirring, continuing reaction to a solid content of 40-100 g/l, adjusting to pH 3-5, filtering off the silica, washing, drying and possibly milling or granulating, (b) vulcanisable rubber mixtures and vulcanised rubber containing this silica as a filler.

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