Functional fluid compositions
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorPierre Levesque
Life of this patent
Estimating the term…
Abstract
Functional fluids comprising at least one compound selected from the group consisting of a glycol, a glycol ether, an ester, a hydrocarbon, and mixtures thereof and an effective amount of benzotriazole, a derivative thereof such as tolyltriazole or mixtures thereof and 1,2,4-triazole, a derivative thereof or mixtures thereof. The functional fluids exhibit increased resistance to corrosion and reduced sediment formation and are useful as brake fluids.
Claims10
A brake fluid, comprising a base fluid containing at least one compound selected from the group consisting of glycols, glycol ethers, esters, and hydrocarbons, in admixture with an effective corrosion inhibiting amount of (a) benzotriazole, its derivatives and mixtures thereof represented by the formula ##STR3## and (b) 1,2,4 triazole and its derivatives and mixtures thereof represented by the formula ##STR4## wherein in both (a) and (b) R and R' are the same or different and can be hydrogen, an alkyl group containing from 1 to 8 carbon atoms, an amino group, an acyl group, or an aryl group.
Dependencies are inferred from the claim text.