Hydraulic fluid compositions and preparation thereof

C - Chemistry – Metallurgy – 10 – M

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C10M 101/02 (2006.01)

Patent

CA 2696847

A hydraulic fluid composition having excellent oxidation stability prepared from an isomerized base oil is provided. The composition comprising (i) 80 to 99.999 wt. % of a lubricating base oil having consecutive numbers of carbon atoms, less than wt% naphthenic carbon by n-d-M; and (ii) 0.001 - 20 wt % of at least an additive package. The hydraulic fluid composition meets the performance specifications of at least one of the JCMAS HK and JCMAS HKB standard specifications issued by the Fuels and Lubricants Technical Committee of Japan Construction Mechanization Association (JCMA).

L'invention porte sur une composition de fluide hydraulique présentant une excellente stabilité à l'oxydation, préparée à partir d'une huile de base isomérisée. La composition comprend (i) 80 à 99,999 % en poids d'une huile de base lubrifiante ayant des nombres consécutifs d'atomes de carbone, moins de 10 % en poids de carbone naphténique par n-d-M; et (ii) 0,001 à 20 % en poids d'au moins un conditionnement d'additifs. La composition de fluide hydraulique satisfait les spécifications de performance répond à au moins l'une des spécifications de normes JCMAS HK et JCMAS HKB publiées par le Comité Technique des Combustibles et des Lubrifiants de l'Association de Mécanisation de Construction du Japon (Japan Construction Mechanization Association - JCMA).

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