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2 067 982

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C1

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IPC

(21) (22)

Application

5066846/04, 1992-08-10

(22)

Actual filing date

1992-08-10

(45)

Published

1996-10-20

(72)

Inventor

Kovshov Ju.S.Moiseev V.V.Poluehktov I.T.Kirej G.N.

(73)

Holder

Voronezhskij Filial Vsesojuznogo Nauchno-Issledovatel'Skogo Instituta Sinteticheskogo Kauchuka Im.S.V.Lebedeva

METHOD FOR PRODUCTION OF POLYMERS AFFECTED BY CYCLIZATION Russian patent published in 1996 - IPC

Abstract RU 2067982 C1

FIELD: production of synthetic rubber. SUBSTANCE: desired rubber containing isoprene units are prepared by heating of polymer in organic solvent. The process is carried out in the presence of cation active catalyst, compound having formula C6H3(R)(OH)(SO3H) where R is C4-C12 alkyl is used as said catalyst. Quantity of said catalyst is 1-20 mass % as calculated for polymer. EFFECT: improves quality of desired product. 3 tbl

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RU 2 067 982 C1

Authors

Kovshov Ju.S.

Moiseev V.V.

Poluehktov I.T.

Kirej G.N.

Dates

1996-10-20—Published

1992-08-10—Filed

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