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2 035 458

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C1

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IPC

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Application

93001610/04, 1993-01-11

(22)

Actual filing date

1993-01-11

(45)

Published

1995-05-20

(72)

Inventor

Timofeev A.F.Zubritskaja N.G.Bazanov A.G.Kozlova O.V.Sushchenko L.F.Jakovlev V.A.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Institut Prikladnoj Khimii"

METHOD OF GAMMA-BUTYROLACTONE SYNTHESIS Russian patent published in 1995 - IPC

Abstract RU 2035458 C1

FIELD: organic chemistry. SUBSTANCE: product: gamma-butyrolactone. Reagent 1: maleic anhydride. Reaction conditions: steam-phase hydrogenation is carried out at increased temperature in the medium of organic solvent in the presence of catalyst. Catalyst has, wt.-%: copper oxide 45-70; zinc oxide 15-40, and calcium aluminate - the rest. Yield of the end product is 91.8% . Method is used in industrial organic synthesis. EFFECT: increased yield of product. 2 tbl

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RU 2 035 458 C1

Authors

Timofeev A.F.

Zubritskaja N.G.

Bazanov A.G.

Kozlova O.V.

Sushchenko L.F.

Jakovlev V.A.

Dates

1995-05-20—Published

1993-01-11—Filed

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