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2 152 922

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IPC

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Application

99110002/04, 1999-05-17

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Start date

1999-05-17

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Actual filing date

1999-05-17

(45)

Published

2000-07-20

(72)

Inventor

Safin D.Kh.Gajfutdinov G.Sh.Ashikhmin G.P.Krasnov V.N.Makarov G.M.Chebareva A.I.Il'Jasov G.L.Kuznetsov V.V.

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Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF COMBINED PREPARATION OF MONO-AND DIETHYLENE GLYCOLS Russian patent published in 2000 - IPC

Abstract RU 2152922 C1

FIELD: chemical industry. SUBSTANCE: process of hydration of ethylene oxide is carried out at elevated temperature and pressure in the presence of acetaldehyde and/or crotonic aldehyde in amount of 0.002-0.2 wt.% with monoethylene glycol content of 10-30 wt.% in reaction blend followed by treatment of the resulting reaction mixture with alkali agent, evaporation and recovery of desired products by rectification. EFFECT: lower yield of heavy ethylene glycols and concentrated solution of ethylene glycols. 14 ex, 1 tbl

Similar patents RU2152922C1

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RU 2 152 922 C1

Authors

Safin D.Kh.

Gajfutdinov G.Sh.

Ashikhmin G.P.

Krasnov V.N.

Makarov G.M.

Chebareva A.I.

Il'Jasov G.L.

Kuznetsov V.V.

Dates

2000-07-20—Published

1999-05-17—Filed