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2 028 310

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Application

93031390/05, 1993-07-05

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Actual filing date

1993-07-05

(45)

Published

1995-02-09

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Inventor

Aksenov V.I.Stepanova E.V.Zolotarev V.L.Rjakhovskij V.S.Zaboristov V.N.Khlustikov V.I.Gol'Berg I.P.

(73)

Holder

Aktsionernoe Obshchestvo Zavod Sinteticheskogo Kauchuka"

METHOD OF POLYBUTADIENE SYNTHESIS Russian patent published in 1995 - IPC

Abstract RU 2028310 C1

FIELD: industry of synthetic rubber. SUBSTANCE: method involves polymerization of butadiene-1,3 in toluene medium in the presence of n-butyllithium and divinylbenzene in battery of at least 5 reactors. Charge has 15-20% monomer which is divided for two flows at the ratio from 1:2.5 to 1:8 which were fed into the 1-st and 3-d reactor, respectively. Into the first reactor n-butyllithium is added at the molar ratio with monomer from 1:370 to 1:530; into the second reactor divinylbenzene is added at the molar ratio with n-butyllithium from 0.1:1 to 0.4:1. Polymerization into the 1-st and 2-d reactors is carried out at 30-50 C, and in the rest ones - at 50-100 C. EFFECT: improved method of synthesis. 1 tbl

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RU 2 028 310 C1

Authors

Aksenov V.I.

Stepanova E.V.

Zolotarev V.L.

Rjakhovskij V.S.

Zaboristov V.N.

Khlustikov V.I.

Gol'Berg I.P.

Dates

1995-02-09—Published

1993-07-05—Filed

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