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2 043 389

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C1

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IPC

(21) (22)

Application

5067683/04, 1992-09-09

(22)

Actual filing date

1992-09-09

(45)

Published

1995-09-10

(72)

Inventor

Lebedev N.A.Tuzova V.B.Merechina M.M.Mironov Ju.N.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Neftepromyslovoj Khimii

METHOD OF PREPARING DEMULSIFIER FOR WATER-OIL EMULSION RUPTURE Russian patent published in 1995 - IPC

Abstract RU 2043389 C1

FIELD: oil industry. SUBSTANCE: method involves condensation of C4- C12-alkylphenol with high-boiling by-side product of production of isoprene from isobutylene and formaldehyde or 4,4-dimethyldioxa-1,3 (molar ratio is 1: (0.5-2)) followed by hydroxyethylation up to the content of hydroxyethyl groups in molecule 30-70 wt.-% Then product is condensed with adipic or succinic acid, or with maleic or phthalic anhydride (molar ratio is 1: (0.05-2)). EFFECT: improved method of demulsifier preparing. 2 cl, 3 tbl

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RU 2 043 389 C1

Authors

Lebedev N.A.

Tuzova V.B.

Merechina M.M.

Mironov Ju.N.

Dates

1995-09-10—Published

1992-09-09—Filed

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