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    21.
    发明专利
    未知

    公开(公告)号：BR9805386A

    公开(公告)日：1999-12-07

    申请号：BR9805386

    申请日：1998-12-11

    Applicant: DEGUSSA

    Inventor： SIRAY MUSTAFA DR ,  SCHEFFLER JOCHEN DR

    IPC: C01B33/18 ,  C01B33/193 ,  C09C1/28 ,  C09C1/30 ,  C09C3/00 ,  C09D7/00

    Abstract: Precipitated silica with the specified physical-chemical parameters is new. Precipitated silica (I) with the following physical-chemical parameters is new: BET surface area = 400-600 m /g to DIN 66131; dibutyl phthalate (DBP) value = 300-360 g/100 g to DIN 53601; tamped density = 70-140 g/l to DIN 53194; grindometer value = 15-50 mu m to ISO 1524; particle size distribution index I = less than 1.0 by Malvern method, I = (d90 - d10)/2d50. Independent claims are also included for (a) precipitated silica (II) coated with a polyethylene wax emulsion and having specified physical chemical parameters; (b) the production of (I); and (c) the production of (II).

    22.
    发明专利
    未知

    公开(公告)号：BR9803966A

    公开(公告)日：1999-12-07

    申请号：BR9803966

    申请日：1998-09-14

    Applicant: DEGUSSA

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

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

    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.

    27.
    发明专利
    未知

    公开(公告)号：DK0922671T3

    公开(公告)日：2004-02-09

    申请号：DK98122230

    申请日：1998-11-23

    Applicant: DEGUSSA

    Inventor： SIRAY MUSTAFA DR ,  SCHEFFLER JOCHEN DR

    IPC: C01B33/18 ,  C01B33/193 ,  C09C1/28 ,  C09C1/30 ,  C09C3/00 ,  C09D7/00

    Abstract: Precipitated silica with the specified physical-chemical parameters is new. Precipitated silica (I) with the following physical-chemical parameters is new: BET surface area = 400-600 m /g to DIN 66131; dibutyl phthalate (DBP) value = 300-360 g/100 g to DIN 53601; tamped density = 70-140 g/l to DIN 53194; grindometer value = 15-50 mu m to ISO 1524; particle size distribution index I = less than 1.0 by Malvern method, I = (d90 - d10)/2d50. Independent claims are also included for (a) precipitated silica (II) coated with a polyethylene wax emulsion and having specified physical chemical parameters; (b) the production of (I); and (c) the production of (II).

    28.
    发明专利
    未知

    公开(公告)号：DE59809859D1

    公开(公告)日：2003-11-13

    申请号：DE59809859

    申请日：1998-11-23

    Applicant: DEGUSSA

    Inventor： SIRAY MUSTAFA DR ,  SCHEFFLER JOCHEN DR

    IPC: C01B33/18 ,  C01B33/193 ,  C09C1/28 ,  C09C1/30 ,  C09C3/00 ,  C09D7/00

    Abstract: Precipitated silica with the specified physical-chemical parameters is new. Precipitated silica (I) with the following physical-chemical parameters is new: BET surface area = 400-600 m /g to DIN 66131; dibutyl phthalate (DBP) value = 300-360 g/100 g to DIN 53601; tamped density = 70-140 g/l to DIN 53194; grindometer value = 15-50 mu m to ISO 1524; particle size distribution index I = less than 1.0 by Malvern method, I = (d90 - d10)/2d50. Independent claims are also included for (a) precipitated silica (II) coated with a polyethylene wax emulsion and having specified physical chemical parameters; (b) the production of (I); and (c) the production of (II).

    30.
    发明专利
    未知

    公开(公告)号：ES2133864T3

    公开(公告)日：1999-09-16

    申请号：ES96108371

    申请日：1996-05-25

    Applicant: DEGUSSA

    Inventor： GORL UDO DR ,  HUNSCHE ANDREA ,  KUHLMANN ROBERT ,  SIRAY MUSTAFA DR ,  ESCH HEINZ

    IPC: C01B33/193 ,  C08K3/00 ,  C08K3/36 ,  C08K9/00 ,  C01B33/187 ,  C08K9/06 ,  C08L21/00 ,  C09C1/30

    Abstract: - Pptd. SiO2 (I) has a CTAB surface area (to ASTM D 3765-92) of 200-400 m /g, a DBP no. (to ASTM D 2414) between 230 and 380 ml/100 g as powder and 180-250 g/100 g as granulate; a silanol gp. density (V2 consumption of NaOH) of 20-30 ml; and a typical macropore size distribution for each surface area, determined by HG porosimetry (DIN 66133) for certain pore size intervals (incremental plot). For CTAB surface areas of (A) 200-250, (B) 250-3300, (C) 300-400 m /g, the Hg consumption is (A) 0.27-0.49, (B) 0.35-0.50, (C) 0.32-0.42 ml/g for 10-20 nm pores; (A) 0.22-0.32, (B) 0.15-0.30, (C) 0.17-0.22 ml/g for 20-30 nm pores; (A) 0.15-0.21, (B) 0.12-0.17, (C) 0.12-0.15 ml/g for 30-40 nm pores; (A) 0.11-0.16, (B) 0.09-0.12, (C) 0.08-0.11 ml/g for 40-50 nm pores; and (A) 0.08-0.12, (B) 0.06-0.10, (C) 0.06-0.09 ml/g for 50-60 nm pores. Also claimed are vulcanisable rubber blends contg. 5-100, esp. 15-60 phr (I); and rubber blends and/or vulcanisates contg. opt. silane-modified (I).

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