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2 184 770

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IPC

(21) (22)

Application

2000126937/04, 2000-10-27

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Start date

2000-10-27

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Actual filing date

2000-10-27

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Published

2002-07-10

(72)

Inventor

Gruntenko G.S.Fedjanin N.P.Demchenko A.I.Sobolevskaja L.V.Nazarova D.V.Kovalenko S.I.Kuz'Min D.S.Trufanov A.G.Mel'Nikov G.Ju.Trofimov E.V.Kolesov V.V.

(73)

Holder

Federal'Naja Finansovo-Promyshlennaja Kompanija

WORKING FLUID FOR HYDRAULIC SYSTEMS OF GAS DUCTS Russian patent published in 2002 - IPC

Abstract RU 2184770 C1

FIELD: gas transportation systems. SUBSTANCE: fluid based of oil fraction with boiling range 165-315 C and designed for hydraulic systems of gas duct stop valves contains 40-60 wt % liquid linear or ramified polydimethylsiloxane with viscosity 20-50 sq.mm/s and 0.5-3.0 wt % ω,ω¹-hexamethyl-methyl(2,6-di-t-butyl-4-methylphenoxy)oligodimethylsiloxane as additive. EFFECT: increased reliability and operation speed of hydraulic drive automatic control system and stabilized operation within wide temperature range (from -70 C to +70 C). 4 tbl

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RU 2 184 770 C1

Authors

Gruntenko G.S.

Fedjanin N.P.

Demchenko A.I.

Sobolevskaja L.V.

Nazarova D.V.

Kovalenko S.I.

Kuz'Min D.S.

Trufanov A.G.

Mel'Nikov G.Ju.

Trofimov E.V.

Kolesov V.V.

Dates

2002-07-10—Published

2000-10-27—Filed