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2 076 853

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Application

3141464/04, 1986-05-05

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Actual filing date

1986-05-05

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Published

1997-04-10

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Inventor

Nikiforov B.L.Chaunina I.V.Danishevskij L.P.Barabanov V.G.Lakeev V.A.Kushina I.D.Masljakov A.I.Utkina I.M.Tsarev V.A.Tokarev A.V.Borisenko A.T.

(73)

Holder

Rossijskij Nauchnyj Tsentr Khimija"

PROCESS FOR RECOVERY OF TETRAFLUOROETHYLENE FROM DIFLUOROCHLOROMETHANE PYROLYSIS PRODUCTS Russian patent published in 1997 - IPC

Abstract RU 2076853 C1

FIELD: chemistry of polymers. SUBSTANCE: tetrafluoroethylene is monomer for valuable fluorine-containing polymers. It is recovered from difluorochloromethane pyrolysis products by absorption of N-methyl pyrrolidone at rate of 0.7-11 kg/kg of product followed by desorption of tetrafluoroethylene dissolved in N-methyl pyrrolidone at 90-140 C. Absorption conditions: from minus 20 C to plus 30 at pressure of 1-15 atm. EFFECT: more efficient recovery process. 2 dwg, 2 tbl

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RU 2 076 853 C1

Authors

Nikiforov B.L.

Chaunina I.V.

Danishevskij L.P.

Barabanov V.G.

Lakeev V.A.

Kushina I.D.

Masljakov A.I.

Utkina I.M.

Tsarev V.A.

Tokarev A.V.

Borisenko A.T.

Dates

1997-04-10—Published

1986-05-05—Filed

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