METHOD FOR PRODUCTION OF LOW-FREEZING BASE FOR HYDRAULIC OILS Russian patent published in 2002 - IPC

Abstract RU 2179178 C1

FIELD: petrochemical processes. SUBSTANCE: long diesel fraction is subjected to hydrofining in presence of alumino-nickel-molybdenum catalyst and then close-cut fraction (270-340 C) is isolated from hydrogenizate, which is subjected to extensive deparaffination at temperature no higher than -62 C in presence of methyl ethyl ketone and toluene at volume ratio 60:40. EFFECT: improved yield of low- freezing base and improved low-temperature and fare-safety properties. 2 dwg, 5 tbl, 7 ex

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RU 2 179 178 C1

Authors

Nigmatullin R.G.

Ol'Kov P.L.

Aznabaev Sh.T.

Madzham M.T.

Belova T.V.

Nigmatullin I.R.

Dates

2002-02-10Published

2000-08-08Filed