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Glycol-based and silicate-, borate- and phosphate-free coolant with enhanced corrosion protection
Glycol-based and silicate-, borate- and phosphate-free coolant with enhanced corrosion protection
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机译:乙二醇基,无硅酸盐,硼酸盐和磷酸盐的冷却液,具有增强的腐蚀防护
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摘要
The invention relates to a coolant concentrate comprisinga) from 0.1 to 6% by weight of at least one monocarboxylic and/or dicarboxylic acid having from 4 to 16 carbon atoms in the form of alkali metal salts,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) if desired, up to 4% by weight of water, andf) glycols to 100% by weight,in each case based on the total weight of the concentrate.
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