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2 306 322

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C1

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IPC

C08G65/22(2006-01-01)

C10G33/04(2006-01-01)

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Application

2006117129/04, 2006-05-05

(24)

Start date

2006-05-05

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Actual filing date

2006-05-05

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Published

2007-09-20

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Inventor

Solodov Vasilij AleksandrovichVarnavskaja Ol'Ga Anatol'EvnaLebedev Nikolaj AlekseevichKhvatova Ljudmila KonstantinovnaFakhrutdinov Bulat Revovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Institut Po Neftepromyslovoj Khimii" Oao

ETHYLENE- AND PROPYLENE OXIDE BLOCK COPOLYMER BASED ON PENTAERYTHRITE AS DEEMULSIFIER OF WATER-PETROLEUM EMULSION, METHOD FOR PRODUCTION THEREOF AND DEEMULSIFIER BASED ON THE SAME Russian patent published in 2007 - IPC C08G65/22 C10G33/04 

Abstract RU 2306322 C1

FIELD: block copolymer synthesis based on polyvalent alcohols.

SUBSTANCE: invention relates to synthesis of new block copolymer of ethylene- and propylene oxide based on pentaerythrite of general formulae C(CH2O-(C3H6O)m(C2H4O)nH)4, wherein 4n = 32-124; 4m = 24-96, and C(CH2O-(C3H6O)(C2H4O)n-(C3H6O)mH)4, wherein 4n = 32-124; 4m = 20-92. Method for production thereof includes component interaction in presence of dimethylsulphoxide and alcali catalyst under heating, wherein oxypropylated perpolymer in propylene oxide/pentaerythrite molar ratio 4 is obtained, then oxypropylation and oxyethylation or oxyethylation and oxypropylation are carried out. Claimed deemulsifier contains 10-90 mass % of said block copolymer, and balance: solvent up to 100 mass %.

EFFECT: deemuisifier of improved characteristics.

3 cl, 2 tbl, 19 ex

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RU 2 306 322 C1

Authors

Solodov Vasilij Aleksandrovich

Varnavskaja Ol'Ga Anatol'Evna

Lebedev Nikolaj Alekseevich

Khvatova Ljudmila Konstantinovna

Fakhrutdinov Bulat Revovich

Dates

2007-09-20—Published

2006-05-05—Filed

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