Patent ID: 6309559
Filing Date: 2001-10-30
Classification: C09K,C23F

Abstract:
A coolant concentrate comprisinga) from 0.1 to 6% by weight of at least one monocarboxylic acid having from 4 to 16 carbon atoms in the form of alkali metal salts, at least one dicarboxylic acid having from 4 to 16 carbon atoms in the form of alkali metal salts, or a combination thereof,b) from 0.02 to 2% by weight of a triazinetriiminocarboxylic acid in the form of its alkali metal salt,c) from 0.02 to 2% by weight of at least one hydrocarbon triazole,d) from 0.01 to 1% by weight of at least one soluble alkaline earth metal salt,e) optionally, up to 4% by weight of water, andf) a glycol to 100% by weight,in each case based on the total weight of the concentrate.