Alkylene glycol based antifreeze concentrate, useful for coolant systems, contains at least two different dicarboxylic acid salts, a molybdate salt and corrosion inhibitors

    公开(公告)号:DE19952482A1

    公开(公告)日:2001-05-03

    申请号:DE19952482

    申请日:1999-10-29

    Applicant: BASF AG

    Abstract: Alkylene glycol based antifreeze concentrate contains 0.05-10 wt.% of a mixture of at least two different 3-16C dicarboxylic acids in the form of their alkali metal, ammonium- or substituted ammonium salts, 0.01-5 wt.% of an alkali metal, ammonium or substituted ammonium molybdate and 0.01-3 wt.% of a mixture of at least two different corrosion inhibitors comprising triazoles and thiazoles. An antifreeze concentrate (I), based on alkylene glycol or its derivatives, contains (A) 0.05-10 wt.% (w.r.t. concentrate (I)) of a mixture of at least two different 3-16C dicarboxylic acids in the form of their alkali metal, ammonium- or substituted ammonium salts, (B) 0.01-5 wt.% (w.r.t. (I)) of an alkali metal, ammonium or substituted ammonium molybdate and (C) 0.01-3 wt.% (w.r.t. (I)) of a mixture of at least two different corrosion inhibitors comprising triazoles and thiazoles. An Independent claim is also included for a cooling agent composition having a reduced freezing point, comprising water and 10-90 wt.% of the concentrate (I).

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