3.
    发明专利
    未知

    公开(公告)号:DE19840153A1

    公开(公告)日:2000-04-20

    申请号:DE19840153

    申请日:1998-09-03

    Applicant: DEGUSSA

    Abstract: Precipitated silica with an aluminum oxide (Al2O3) content of 0.2-5.0 wt. % and a wk coefficient of less than 3.4. Independent claims are also included for: (a) a process for the production of this silica by reacting alkali silicate solution with mineral acid and aluminum salt solution in aqueous medium at 60-95 degrees C and pH 7.0-10.0 until the mixture has a solid content of 40-110 g/l, then adjusting to pH 3-5 and working up by known methods; and (b) vulcanizable rubber mixtures and vulcanized rubber containing this silica as filler.

    4.
    发明专利
    未知

    公开(公告)号:DE59900400D1

    公开(公告)日:2001-12-13

    申请号:DE59900400

    申请日:1999-07-31

    Applicant: DEGUSSA

    Abstract: Precipitated silica with an aluminum oxide (Al2O3) content of 0.2-5.0 wt. % and a wk coefficient of less than 3.4. Independent claims are also included for: (a) a process for the production of this silica by reacting alkali silicate solution with mineral acid and aluminum salt solution in aqueous medium at 60-95 degrees C and pH 7.0-10.0 until the mixture has a solid content of 40-110 g/l, then adjusting to pH 3-5 and working up by known methods; and (b) vulcanizable rubber mixtures and vulcanized rubber containing this silica as filler.

    5.
    发明专利
    未知

    公开(公告)号:ES2165718T3

    公开(公告)日:2002-03-16

    申请号:ES99115208

    申请日:1999-07-31

    Applicant: DEGUSSA

    Abstract: Precipitated silica with an aluminum oxide (Al2O3) content of 0.2-5.0 wt. % and a wk coefficient of less than 3.4. Independent claims are also included for: (a) a process for the production of this silica by reacting alkali silicate solution with mineral acid and aluminum salt solution in aqueous medium at 60-95 degrees C and pH 7.0-10.0 until the mixture has a solid content of 40-110 g/l, then adjusting to pH 3-5 and working up by known methods; and (b) vulcanizable rubber mixtures and vulcanized rubber containing this silica as filler.

    6.
    发明专利
    未知

    公开(公告)号:BR9904037A

    公开(公告)日:2000-09-05

    申请号:BR9904037

    申请日:1999-09-02

    Applicant: DEGUSSA

    Abstract: Precipitated silica with an aluminum oxide (Al2O3) content of 0.2-5.0 wt. % and a wk coefficient of less than 3.4. Independent claims are also included for: (a) a process for the production of this silica by reacting alkali silicate solution with mineral acid and aluminum salt solution in aqueous medium at 60-95 degrees C and pH 7.0-10.0 until the mixture has a solid content of 40-110 g/l, then adjusting to pH 3-5 and working up by known methods; and (b) vulcanizable rubber mixtures and vulcanized rubber containing this silica as filler.

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