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2 150 457

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Application

97100331/04, 1997-01-10

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Start date

1997-01-10

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Actual filing date

1997-01-10

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Published

2000-06-10

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Inventor

Abramov O.B.Golubev A.N.Dedov A.S.Zakharov V.Ju.Kalashnikova N.A.Masljakov A.I.Nasonov Ju.B.Pugin A.N.Smirnov Ju.N.Tsarev V.A.Shabalin D.A.

(73)

Holder

Aoot Khimicheskij Kombinat Im. B.P. Konstantinova"

METHOD OF PURIFICATION OF HEXAFLUOROPROPYLENE Russian patent published in 2000 - IPC

Abstract RU 2150457 C1

FIELD: chemical technology. SUBSTANCE: invention relates to production of hexafluoropropylene used as comonomer in production of fluoroplastics and fluorinated rubber and as raw for synthesis of some fluoroorganic substances. Process is carried out at 0-50 C by bubbling of gaseous hexafluoropropylene through oleum or by mixing liquid hexafluoropropylene with oleum under autogenic pressure for 10-30 min. Oleum is taken in the amount 1 mole (by sulfur trioxide), not less, per 1 mole of trifluorochloroethylene in hexafluoropropylene to be purified and containing 2-30 wt.% of sulfur trioxide. EFFECT: production of trifluorochloroethylene-free hexafluoropropylene. 1 cl, 3 ex

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RU 2 150 457 C1

Authors

Abramov O.B.

Golubev A.N.

Dedov A.S.

Zakharov V.Ju.

Kalashnikova N.A.

Masljakov A.I.

Nasonov Ju.B.

Pugin A.N.

Smirnov Ju.N.

Tsarev V.A.

Shabalin D.A.

Dates

2000-06-10—Published

1997-01-10—Filed

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