Functional fluids compositions

Details Functional fluids compositions Functional fluids compositions

C - Chemistry, Metallurgy

10

M

C10M 133/44 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2360632

Functional fluids comprising as a base oil at least one compound selected from the group consisting of a glycol, a glycol ether, an ester, a hydrocarbon, and mixtures thereof and as a multifunctional additive composition the mixture of a benzotriazole, a derivative thereof or mixtures thereof together with 1,2,4-triazole, a derivative thereof or mixtures thereof. The functional fluids exhibit increased resistance to corrosion and reduced sediment formation and are especially useful as brake fluids.

Cette invention concerne des liquides fonctionnels comportant comme huile de base au moins un composé pris dans le groupe comprenant un glycol, un éther glycolique, un ester, un hydrocarbure, et des mélanges de ces substances et, comme composition d'additif multifonctions le mélange d'un benzotriazole et d'un dérivé de cette substance ou des mélanges de ces substances ainsi qu'un 1,2,4-triazole, un dérivé ou des mélanges de ces substances. Ces liquides fonctionnels, qui présentent une résistance accrue à la corrosion et une moindre tendance à la formation de dépôts, conviennent particulièrement bien comme liquides de frein.

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