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2 061 668

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Application

5036409/04, 1992-03-06

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Actual filing date

1992-03-06

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Published

1996-06-10

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Inventor

Nikiforov P.A.Kolesnikov V.Ja.Rabinovich M.I.Sulin V.N.Butakov G.V.Komlev Ju.V.Epifanov V.I.Levashova S.V.Tjukhanov V.F.

(73)

Holder

Proizvodstvennoe Ob"Edinenie

PROCESS FOR CLEANING DICHLOROETHANE OF CHLOROPRENE Russian patent published in 1996 - IPC

Abstract RU 2061668 C1

FIELD: production of polymeric materials. SUBSTANCE: cleaning operation is carried out by treatment of the reaction mixture with agent which binds chloroprene with catalytic liquid complex AlCl3•Al[(CH2CH2)nCl]C12, wherein n is 1-12. The latter is obtained by treatment of vat residues resulting form chloroethyl production with aluminium chloride in the form of solution thereof in dichloroethane. The cleaning operation is carried out at AlCl3 concentration of 20-25 wt % in the complex under continuous stirring for 0.5-5.0 hours at 0-60 C to give liquid polychloroprene dissolved in organic solvents. EFFECT: more efficient purification process. 5 cl

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RU 2 061 668 C1

Authors

Nikiforov P.A.

Kolesnikov V.Ja.

Rabinovich M.I.

Sulin V.N.

Butakov G.V.

Komlev Ju.V.

Epifanov V.I.

Levashova S.V.

Tjukhanov V.F.

Dates

1996-06-10—Published

1992-03-06—Filed

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