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2 137 748

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C1

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IPC

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Application

98120621/04, 1998-11-16

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Start date

1998-11-16

(22)

Actual filing date

1998-11-16

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Published

1999-09-20

(72)

Inventor

Safin D.Kh.Mustafin Kh.V.Shepelin V.A.Ashikhmin G.P.Gajfutdinov G.Sh.Chebareva A.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF PRODUCING CONCENTRATED AQUEOUS SOLUTION OF MONOETHYLENE GLYCOL Russian patent published in 1999 - IPC

Abstract RU 2137748 C1

FIELD: industrial organic synthesis. SUBSTANCE: ethylene oxide is hydrated at its molar ratio to water from 1:2 to 1:8 by portionwise adding ethylene oxide to reaction mixture and controlling concentration of ethylene oxide within a range of 5.0-20.0 wt % at 90-140 C. Under these conditions, selectivity of process with respect to monoethylene glycol ranges from 70 to 84 mol % and resulting product is suitable for production of synthetic fibers. EFFECT: enabled production of concentrated aqueous solution of monoethylene glycol in the form of reaction mass suited to isolation of "optically transparent" product with high yield. 2 cl, 1 dwg, 1 tbl, 8 ex

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RU 2 137 748 C1

Authors

Safin D.Kh.

Mustafin Kh.V.

Shepelin V.A.

Ashikhmin G.P.

Gajfutdinov G.Sh.

Chebareva A.I.

Dates

1999-09-20—Published

1998-11-16—Filed

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