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2 043 328

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IPC

(21) (22)

Application

93002038/04, 1993-01-11

(22)

Actual filing date

1993-01-11

(45)

Published

1995-09-10

(72)

Inventor

Mitin P.V.Barabanov V.G.Ozol S.I.Zajtsev S.A.

(73)

Holder

Rossijskij Nauchnyj Tsentr Khimija"

PROCESS FOR PREPARING MONOMERS Russian patent published in 1995 - IPC

Abstract RU 2043328 C1

FIELD: preparation of fluoroplastic materials. SUBSTANCE: preparation of vinyl fluoride, difluoroethylene and trifluoroethylene is carried out by thermal dihydrofluorination of fluorine-containing ethanes in a chromium-nickel alloy reactor, its interval surface being preliminarily treated with pyrolysis products in the presence of steam. The starting ethanes to steam ratio is 2-3:1 at 650-700 C. Pyrolysis is then carried out at 700-900 C. The contact time is 0.05-2.5 s. EFFECT: more efficient preparation process. 4 tbl

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RU 2 043 328 C1

Authors

Mitin P.V.

Barabanov V.G.

Ozol S.I.

Zajtsev S.A.

Dates

1995-09-10—Published

1993-01-11—Filed

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