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2 096 402

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C1

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IPC

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Application

94030391/04, 1994-08-16

(22)

Actual filing date

1994-08-16

(45)

Published

1997-11-20

(72)

Inventor

Shapiro A.L.Sinitsyn A.V.Poljakov S.A.Abramov N.V.Golovachev A.M.Starshinov B.N.

(73)

Holder

Shapiro Aron Lejbovich

METHOD OF PREPARING C-C ALKYL-TERT-C-C ALKYL ETHERS Russian patent published in 1997 - IPC

Abstract RU 2096402 C1

FIELD: high octane additives to motor fuels. SUBSTANCE: said ethers are prepared by etherification of C1-C4 alcohols with tertiary C4-C5 olefins present in industrial hydrocarbon fractions, in liquid phase in the presence of 20-50 wt % orthophosphoric acid as catalyst based on mixture of tertiary C4-C5 olefins with C1-C4 alcohol at initial molar ratio of C1-C4 alcohol to tertiary C4-C5 olefin of (0.9-1.2):1. Reaction mixture is separated at reaction temperature in separator. This fact significantly simplifies process and reduces power losses and acid catalyst losses with hydrocarbon phase. Catalyst phase is recycled to the process. Utilization of sewage is simplified. EFFECT: more efficient preparation method. 4 cl, 1 tbl

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RU 2 096 402 C1

Authors

Shapiro A.L.

Sinitsyn A.V.

Poljakov S.A.

Abramov N.V.

Golovachev A.M.

Starshinov B.N.

Dates

1997-11-20—Published

1994-08-16—Filed

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