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IPC

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Application

97104776/04, 1997-03-25

(22)

Actual filing date

1997-03-25

(45)

Published

1999-11-20

(72)

Inventor

Sheremet'Ev S.K.Trukshin I.G.Barabanov V.G.Mikhajlov S.N.Samsonova N.I.Uklonskij I.P.Denisenkov V.F.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju Nauchno-Tekhnicheskaja Firma

METHOD OF PREPARING PENTAFLUOROETHANE Russian patent published in 1999 - IPC

Abstract RU 2141467 C1

FIELD: chemical technology of fluorine compounds. SUBSTANCE: pentafluoroethane is prepared by catalytic gas phase hydrofluorination of perchloroethylene on mixture of perchloroethylene and hydrogen-containing halogenethanes at 330-465 C, HF to hydrofluorazable products of molar ratio of 4-40: 1, contact time of 5-60 g on catalyst comprising 8-24% of chromium 3 fluoride uniformly distributed in magnesium fluoride. EFFECT: increased yield of the final product. 7 tbl

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RU 2 141 467 C1

Authors

Sheremet'Ev S.K.

Trukshin I.G.

Barabanov V.G.

Mikhajlov S.N.

Samsonova N.I.

Uklonskij I.P.

Denisenkov V.F.

Dates

1999-11-20—Published

1997-03-25—Filed