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2 089 599

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Application

95107408/04, 1995-05-10

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Actual filing date

1995-05-10

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Published

1997-09-10

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Inventor

Borshchevskij S.B.Shabanova E.V.Meshcherin E.M.Levitina I.S.Ivankovskij V.L.Ostrovskaja M.E.Derekh P.A.Blokhinov V.F.Sharov B.A.Gushchin A.I.Gerasimov V.V.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Po Pererabotke NeftiPavlodarskoe Proizvodstvennoe Ob"Edinenie

METHOD FOR PRODUCTION OF MULTIFUNCTIONAL ADDITIVE FOR OILS Russian patent published in 1997 - IPC

Abstract RU 2089599 C1

FIELD: oil processing industry and petrochemical industry. SUBSTANCE: method involves interaction of dialkyldithiophosphoric acid with styrene which is carried out in the presence of phenol and aliphatic alcohol, molar ratio of dialkyldithiophosphoric acid, styrene and phenol being 1:(1-4): (0.5-1), respectively. Quantity of said aliphatic alcohol is 5-10 mass % of quantity of dialkyldithiophosphoric acid. Reaction is carried out at 50-170 C in the presence of triethylamine being used as alkaline catalyst. Thus prepared product is then consequently treated by medium-alkaline calcium sulfonate and succinimide at their mass ratio (10-15):(40-60:(3-45), respectively. The process takes place at 70-80 C within 2-5 h. EFFECT: improved efficiency of the method.

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RU 2 089 599 C1

Authors

Borshchevskij S.B.

Shabanova E.V.

Meshcherin E.M.

Levitina I.S.

Ivankovskij V.L.

Ostrovskaja M.E.

Derekh P.A.

Blokhinov V.F.

Sharov B.A.

Gushchin A.I.

Gerasimov V.V.

Dates

1997-09-10—Published

1995-05-10—Filed

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