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792 901

(13)

A1

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IPC

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Application

2623398/05, 1978-06-05

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Actual filing date

1978-06-05

(45)

Published

1997-03-10

(72)

Inventor

Petrova V.D.Pautov P.G.Prokof'Ev Ja.N.Kopylov E.P.Bugrov V.P.Stepanov G.A.Timofeev E.G.Shcherbakova N.V.Krapivina Kh.Ja.Dobrovinskij V.E.Arkhipov N.B.Polozov A.G.Kolosova Eh.V.Vladykin L.N.Sletova L.I.Orlova A.P.Lebedev Ju.V.Zakharkina K.V.Tsvetkova A.G.Glejberg N.I.Andreev V.A.

METHOD FOR PRODUCTION OF BUTYL RUBBER Russian patent published in 1997 - IPC

Abstract SU 792901 A1

FIELD: production of butyl rubber. SUBSTANCE: method is carried out by copolymerization of isobutylene with isoprene at (-90)-(-50) C. Method takes place in the medium of hydrocarbon solvent in the presence of organoaluminium catalyst, volume ratio of comonomers and said solvent being 3:7-4:1. Mentioned above catalyst has common formula RnAlX3-n•H2Z where R is alkyl, X is halogen, n=1-2, Z is oxygen or sulfur. Said copolymerization takes place in the presence of chlororganic compound, its quantity being 0.5-25.0 vol % of reaction mixture. Said chlororganic compound is chosen of chloromethane, dichloromethane, chloroethane and 1,2-dichloroethane. EFFECT: improves physical and mechanical properties of desired product, improves efficiency of the method.

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SU 792 901 A1

Authors

Petrova V.D.

Pautov P.G.

Prokof'Ev Ja.N.

Kopylov E.P.

Bugrov V.P.

Stepanov G.A.

Timofeev E.G.

Shcherbakova N.V.

Krapivina Kh.Ja.

Dobrovinskij V.E.

Arkhipov N.B.

Polozov A.G.

Kolosova Eh.V.

Vladykin L.N.

Sletova L.I.

Orlova A.P.

Lebedev Ju.V.

Zakharkina K.V.

Tsvetkova A.G.

Glejberg N.I.

Andreev V.A.

Dates

1997-03-10—Published

1978-06-05—Filed

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