HYDRAULIC OIL Russian patent published in 2010 - IPC C10M129/72 C10M171/02 C10M129/10 C10M133/12 C10M137/04 C10M155/02 C10N40/08 

FIELD: chemistry.

SUBSTANCE: invention relates to hydraulic oils used as working (shock-absorber) liquids in telescopic and cam-and-lever shock absorbers of automobiles and other devices used in different climatic conditions. The oil contains the following in wt %: 4-methyl-2,6-di-tert-butylphenol 0.2-0.4; polymethylsiloxane liquid 0.003-0.005; phenyl-α-naphthylamine 0.1-0.2; tricresyl phosphate 0.3-0.5; dioctyl sebacate 8-13; polyalphaolefin with viscosity of 3.7-4.3 mm²/s at 100°C - up to 100.

EFFECT: improved viscosity-temperature properties, increased stability of viscosity during mechanical-dynamic loading.

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