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2 186 088

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C1

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IPC

(21) (22)

Application

2001103406/04, 2001-02-05

(24)

Start date

2001-02-05

(22)

Actual filing date

2001-02-05

(45)

Published

2002-07-27

(72)

Inventor

Araslanov I.M.Kopertekh A.V.

(73)

Holder

Araslanov Il'Dus Minnirakhmanovich

DEMULSIFIER PREPARATION METHOD Russian patent published in 2002 - IPC

Abstract RU 2186088 C1

FIELD: crude oil treatment. SUBSTANCE: demulsifier suitable for destroying crude oil-water emulsion is prepared by condensation of polyoxyethylene ester with adipic or succinic acid or with maleic or phthalic anhydride at molar ratio of ester to acid or anhydride 1:(0.2-0.4) followed by dissolving condensation product in alcohols or aromatic hydrocarbons, or in their mixtures. Initial polyoxyethylene ester is prepared by oxyethylation of synthetic C16-C26-fatty acids until content of oxyethyl groups in molecule reaches 70 +/- 3 wt %. EFFECT: increased demulsification and corrosion-protection activities. 2 cl, 1 tbl

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RU 2 186 088 C1

Authors

Araslanov I.M.

Kopertekh A.V.

Dates

2002-07-27—Published

2001-02-05—Filed

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