Chlorine-free extreme pressure fluid additive

Details Chlorine-free extreme pressure fluid additive Chlorine-free extreme pressure fluid additive

C - Chemistry, Metallurgy

10

M

C10M 129/74 (2006.01) C10M 173/00 (2006.01) C10M 173/02 (2006.01)

Patent

CA 2267884

The invention pertains to chlorine-free extreme pressure metalworking fluid additives and lies in the recognition of the improved hydrolytic stability of alkanoic acid esters of cyclohexane dimethanol and other esters embodying similar structures. The various derivatives which are effective as extreme pressure additives include those which fall within the generic description (I), wherein R1 through R4 are independently selected from the group hydrogen and C1-24 hydrocarbyl groups, and R5 and R6 are independently preferably selected from the group C3-6 hydrocarbyl groups.

Cette invention se rapporte à des additifs fluides extrême pression exempts de chlore utilisés dans le travail de métaux et se situant dans le domaine de la reconnaissance de la stabilité hydrolytique améliorée d'esters d'acide alcanoïque de cyclohexane diméthanol et d'autres esters renfermant des structures similaires. Les divers dérivés qui sont efficaces comme additifs extrême pression sont notamment ceux qui répondent à la formule générique (I) où les éléments R?1¿ à R?4¿ sont choisis séparément dans le groupe de l'hydrogène et des groupes hydrocarbyle C¿1-24?, et R?5¿ et R?6¿ sont de préférence choisis séparément dans le groupe des groupes hydrocarbyle C¿3-6?.

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