Silicate-free coolant composition having corrosion inhibitor...

C - Chemistry – Metallurgy – 09 – K

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C09K 5/00 (2006.01) C23F 11/167 (2006.01) C23F 11/173 (2006.01)

Patent

CA 2027302

SILICATE-FREE COOLANT COMPOSITION HAVING CORROSION INHIBITOR THEREIN Abstract of the Disclosure In addition to a freezing point depressant, aqueous silicate-free coolant compositions, especially anti- freeze formulations, contain corrosion inhibitors which are phosphate esters of alkyl polyoxyethylene polymers and/or phosphate esters of polyoxyethylene/polyoxypropylene copolymers. -65-

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