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2 192 450

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IPC

(21) (22)

Application

2001127551/04, 2001-10-12

(24)

Start date

2001-10-12

(22)

Actual filing date

2001-10-12

(45)

Published

2002-11-10

(72)

Inventor

Chizhevskij A.A.Djurik N.M.Kotov S.A.Chagovets A.N.Tikhomirova S.V.Ustalov A.V.Stepanova G.F.Evstaf'Ev V.P.Levin A.Ja.Gorlov E.G.Alekhina T.A.Fedorov Sergej Aleksandrovich

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo

METHOD OF PREPARING ADDITION AGENT FOR LUBRICATING OIL Russian patent published in 2002 - IPC

Abstract RU 2192450 C1

FIELD: lubricants. SUBSTANCE: addition agent is synthesized by interaction of C₃-C₁₀-aliphatic alcohols with phosphorus pentasulfide with the following neutralization of synthesized dialkyldi-thiophosphoric acids with zinc oxide and purification of addition agent obtained. Stages of interaction and neutralization are carried out in cavitation regimen in mechanical- chemical reactor at the rotor rotation rate providing the value of ratio of amount of collapsing cavitating bubble to working chamber volume = 1.3-15. Method provides decrease of time producing thermally stable addition agent by 2-3-fold and producing addition agent with stable pH value near to neutral one. EFFECT: improved method of producing, simplified method of treatment. 3 ex

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RU 2 192 450 C1

Authors

Chizhevskij A.A.

Djurik N.M.

Kotov S.A.

Chagovets A.N.

Tikhomirova S.V.

Ustalov A.V.

Stepanova G.F.

Evstaf'Ev V.P.

Levin A.Ja.

Gorlov E.G.

Alekhina T.A.

Fedorov Sergej Aleksandrovich

Dates

2002-11-10—Published

2001-10-12—Filed