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2 009 116

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IPC

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Application

5031967/04, 1992-03-12

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Actual filing date

1992-03-12

(45)

Published

1994-03-15

(72)

Inventor

Asovich V.S.Kornilov V.V.Maruev A.V.Mel'Nichenko B.A.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Institut Prikladnoj Khimii"

METHOD FOR PURIFYING 1,1,1,2-TETRAFLUOROETHANE Russian patent published in 1994 - IPC

Abstract RU 2009116 C1

FIELD: purifying polyfluorinated alkanes. SUBSTANCE: 1,1,1,2-tetrafluoroethane contains high toxic impurities of unsaturated haloid-containing compounds C2-C4, their quantities being 10-100000 ppm. Raw 1,1,1,2-tetrafluoroethane is passed through higher fluoride of cobalt or silver (as oxidizer). The process takes place at 200-400 C, linear rate of raw materials passage is given in specification. Waste metal fluorides are regenerated at 200-400 C. EFFECT: improves efficiency of the method.

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RU 2 009 116 C1

Authors

Asovich V.S.

Kornilov V.V.

Maruev A.V.

Mel'Nichenko B.A.

Dates

1994-03-15—Published

1992-03-12—Filed

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