1,3-propanediol-based coolants comprising azole derivatives for fuel cells cooling system

1,3-propanediol-based coolants comprising azole derivatives for fuel cells cooling system

  • CN 1,726,269 B
  • Filed: 12/03/2003
  • Issued: 11/07/2012
  • Est. Priority Date: 12/12/2002
  • Status: Active Grant
First Claim
Patent Images

1. a fuel cell drives cooling system is used antifreeze concentrates, promptly uses moisture coolant composition through what obtain with this enriched material of vaal water dilution that specific conductivity is no more than 50 μ

  • S/cm, and said composition comprises basically;

    (a) 10-90 weight %1, ammediol or 1, the mixture of ammediol and aklylene glycol and/or polyglycol, glycol ethers or glycerine,(b) 90-10 weight % water,(c) one or more azole derivatives of 0.005-5 weight %;

    This azole derivative is to have 2 or 3 heteroatomic 5 membered heterocyclic compounds that are selected from nitrogen and sulphur;

    This heterogeneous ring compound not sulfur atom-containing or contain be no more than a sulphur atom and can have aromatics or saturated hexa-atomic condense structure division and(d) ortho-silicate,By this antifreeze concentrates obtain silicone content be 2-2000ppm weight promptly use moisture coolant composition,It is wherein said that promptly to use the content sum of all components in the moisture coolant composition be 100 weight %.

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