Patent ID: 6558569
Filing Date: 2003-05-06
Classification: C10M

Abstract:
A functional fluid composition comprising(a) from 35 to 70 percent by weight, based on the weight of the total composition, of an alkoxy glycol borate ester having the formula [RO(CH2CH2O)n]3â€”B wherein R is methyl, ethyl, propyl or butyl, or mixtures thereof, n is essentially 2 to 4, and n=3 is greater than about 90 percent by weight, based on the total weight of the borate ester component,(b) from about 25 to about 65 percent by weight, based on the total weight of the composition of an alkoxy glycol component having the formula RO(CH2CH2O)nH wherein R is an alkyl group containing 1 to 8 carbon atoms or mixtures thereof, n is essentially 2 to 4, alkoxy glycol in which n=2 is present in an amount of from about 1 to about 88 percent by weight, based on the total weight of the alkoxy glycol component, alkoxy glycol in which n=4 is present in an amount of from about 0 to about 20 percent by weight, based on the total weight of the alkoxy glycol component, and(c) from 0.3 to about 10 percent by weight, based on the total weight of the composition of an additive package containing corrosion inhibitors, wherein the total of components (a) and (b) in which n=2 is from about 1 to about 45 percent by weight, based on the total weight of the composition and the total of components (a) and (b) in which n=4 is from about 0 to about 10 percent by weight, based on the total weight of the composition.