Water-based hydraulic fluid and metalworking lubricant

C - Chemistry – Metallurgy – 10 – M

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253/136, 253/28,

C10M 1/48 (1980.01) C10M 3/42 (1980.01) C10M 5/24 (1980.01)

Patent

CA 1085814

ABSTRACT OF THE DISCLOSURE: The invention is concerned with a hydraulic fluid or metal working fluid concentrate capable of imparting to water the properties of a lubricant such as resistance to extreme pres- sure and corrosion inhibition. The concentrate of the invention consists essentially of (a) a water-soluble polyoxyethylated aliphatic ester consisting of esters of ethoxylated aliphatic monohydric and polyhydric alcohols and ethoxylated aliphatic acids wherein the acids have about 5 to about 20 moles of ethylene oxide added per mole of acid and wherein the alcohols and acids have carbon chain lengths of 8 to 36 carbon atoms and wherein the esters are produced by first polyoxyethylating at least one of the acids or alcohols and second obtaining the ester reaction pro- duct thereof, and (b) a sulfurized metallic compound of the formula: Image wherein M is molybdenum or antimony and wherein R is selected from the group consisting of alkyl, aryl, alkylaryl radicals and mix- tures thereof having 3 to 20 carbon atoms in the alkyl group and wherein the ratio of the water-soluble ester to the sulfurized metallic compound is from 0.5:1 to 2:1 by weight based upon the weight of the sulfur in the metallic compound. The addition of corrosion inhibitors, thickeners and metal deactivators conventional in this art is also contemplated.

294578

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