253.
    发明专利
    未知

    公开(公告)号:PT1399523E

    公开(公告)日:2005-01-31

    申请号:PT02745366

    申请日:2002-06-06

    Applicant: BASF AG

    Abstract: An antifreeze concentrate for cooling systems in fuel-cell drives which gives ready-to-use aqueous coolant compositions having a conductivity of at most 50 muS/cm, based on alkylene glycols or derivatives thereof and containing one or more five-membered heterocyclic compounds (azole derivatives) having 2 or 3 hetero atoms from the group consisting of nitrogen and sulfur, which contain no or at most one sulfur atom and which may carry a fused aromatic or saturated six-membered ring.

    DOT 4 BRAKE FLUIDS
    259.
    发明专利

    公开(公告)号:CA2517683A1

    公开(公告)日:2004-09-23

    申请号:CA2517683

    申请日:2004-03-11

    Applicant: BASF AG

    Abstract: The invention relates to a brake fluid that comprises a) 10 to 50 % by weigh t, preferably 20 to 40 % by weight, of diethylene glycol and/or dipropylene glycol, b) 50 to 90 % by weight, preferably 60 to 80 % by weight, of one or more monoalkylethers of (poly)ethylene glycol and/or (poly)propylene glycol. The inventive fluids are especially borate-free and owing to their low hygroscopicity are suitable for use in areas with high atmospheric humidity.

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