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2 139 298

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Application

98106960/04, 1998-04-07

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Start date

1998-04-07

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Actual filing date

1998-04-07

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Published

1999-10-10

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Inventor

Markov B.A.Zaboristov V.N.Kalistratova V.V.Sokolov E.N.Tsarina V.S.Rjakhovskij V.S.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Sinteticheskogo Kauchuka"

METHOD OF PREPARING CIS-1,4-POLYBUTADIENE Russian patent published in 1999 - IPC

Abstract RU 2139298 C1

FIELD: chemical industry, more particularly preparation of stereoregular polydienes using Ziegler-Natta catalyst system. SUBSTANCE: cis-1,4-polybutadiene is prepared by polymerization of butadiene in hydrocarbon solvent using catalyst systems based on rare-earth element carboxylates and organoalumium compounds. Organoaluminium compounds and catalyst components containing rare-earth elements are introduced separately into polymerization battery. Method of separate introduction of catalyst system components makes it possible to control polymerization process and regulate quality of polymers. EFFECT: more efficient preparation method. 8 ex, 2 tbl

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RU 2 139 298 C1

Authors

Markov B.A.

Zaboristov V.N.

Kalistratova V.V.

Sokolov E.N.

Tsarina V.S.

Rjakhovskij V.S.

Dates

1999-10-10—Published

1998-04-07—Filed

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