Patent ID: 6676848
Filing Date: 2004-01-13
Classification: C09K,C23F

Abstract:
A heat transfer fluid formulation comprising:(a) from 65-99 weight percent of a water soluble liquid alcohol freezing point depressant; (b) from 0.1-15 weight percent of alkylbenzoic acid of general formula Râ€”Arâ€”COOH where Ar is benzyl and R is a C1-C8 alkyl radical or an element of Group 7, or a salt thereof;(c) from 0.1-15 weight percent of C5-C15 aliphatic monobasic or dibasic acid or salt thereof; (d) from 0.01-5 weight percent of hydrogen fluoride and/or a fluorocarboxylic acid or salt thereof.