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2 091 141

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IPC

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Application

95101297/25, 1995-01-30

(22)

Actual filing date

1995-01-30

(45)

Published

1997-09-27

(72)

Inventor

Takhistov Ju.V.Markevich A.V.Leont'Ev V.S.Trukshin I.G.Vishnjakov V.M.Timofeev S.V.Bobrova L.P.

(73)

Holder

Rossijskij Nauchnyj Tsentr Khimija"

METHOD FOR MEMBRANE ISOLATION OF HYDROGEN FLUORIDE Russian patent published in 1997 - IPC

Abstract RU 2091141 C1

FIELD: isolation of hydrogen fluoride. SUBSTANCE: method involves feeding of mixture to be separated from one side of semipermeable membrane and withdrawal permeated hydrogen fluoride from its other side. Copolymer of tetrafluoroethylene with vinyl ether having formula , OQ′; M=NHQ, Q′=H,NH4 or hydrocarbon radical; Q= H or hydrocarbon radical, M′=(NH)nQ";Q"=H,NH2,Q″′NH2, alkaline metal; Q″′ is hydrocarbon radical; m=4.55-29.00; q, g′=1-6; l=1-2; k= 3 or 5; p=1-5; n ≥ 1; is used as said membrane material. EFFECT: improved efficiency of the method. 1 tbl

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RU 2 091 141 C1

Authors

Takhistov Ju.V.

Markevich A.V.

Leont'Ev V.S.

Trukshin I.G.

Vishnjakov V.M.

Timofeev S.V.

Bobrova L.P.

Dates

1997-09-27—Published

1995-01-30—Filed

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