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    4.
    发明专利
    未知

    公开(公告)号：DE59705611D1

    公开(公告)日：2002-01-17

    申请号：DE59705611

    申请日：1997-03-15

    Applicant: DEGUSSA

    Inventor： KARL DR ,  VOGEL DR ,  FREUND DR

    IPC: B60C1/00 ,  B60C11/00 ,  C08K3/04 ,  C08K9/02 ,  C08L21/00 ,  C09C1/50

    Abstract: Carbon black having a CTAB surface area of 40-180 m /g, a 24M4-DBP-absorption of 20-140 ml/100 g and a specific BET surface area of 80-250 m /g contains 0.01-15 wt.% silicon. Production of the carbon black is also claimed.

    5.
    发明专利
    未知

    公开(公告)号：DE59808790D1

    公开(公告)日：2003-07-31

    申请号：DE59808790

    申请日：1998-05-08

    Applicant: DEGUSSA

    Inventor： SAUER DR ,  HAAS DR ,  KELLER DR ,  FREUND DR ,  BURKHARDT WERNER ,  MICHELCHEN DIETRICH ,  BERWEILER MONIKA

    IPC: B01J25/00 ,  B01J37/00 ,  C07B31/00 ,  C07B61/00 ,  C07C209/48

    Abstract: A formed metal solid-bed catalyst, consisting entirely of catalyst alloy (and possibly promoters) with a total pore vol. of 0.1-0.6 ml/g and with a surface shell 0.1-2.0 mm thick which is activated by complete or partial leaching of an extractable alloy component (I). Also claimed is a process for the production of thE catalyst . Preferably the catalyst metal is nickel, cobalt, copper and/or iron, and component (I) is aluminium, zinc or silicon. The catalyst may also contain up to 15 wt% chromium, iron, cobalt, tantalum, molybdenum and/or titanium as promoters.

    7.
    发明专利
    未知

    公开(公告)号：DE59701393D1

    公开(公告)日：2000-05-11

    申请号：DE59701393

    申请日：1997-07-10

    Applicant: DEGUSSA

    Inventor： HAAS DR ,  BROSSMER DR ,  MEIER DR ,  ARNTZ DR ,  FREUND DR

    IPC: B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  C07B61/00 ,  C07C51/235 ,  C07C59/01

    Abstract: The preparation of 3-hydroxypropionic acid (I) or its salts comprises by catalytic oxidation of 3-hydroxypropionaldehyde (II) with oxygen or oxygen-containing gas in the presence of a platinum-group noble metal M as catalyst in aqueous phase and isolation of (I) or its salts. The amount of M is 10 wt.% with respect to (II).

    8.
    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

    Inventor： BLUME DR ,  FREUND DR ,  SCHWAIGER BERNHARD ,  SIRAY DR ,  UHRLANDT DR

    IPC: C01B33/021 ,  C01B33/193 ,  C08K3/36 ,  C08L21/00 ,  C09C1/30

    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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