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2 099 359

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C1

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IPC

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Application

95104608/04, 1995-03-29

(22)

Actual filing date

1995-03-29

(45)

Published

1997-12-20

(72)

Inventor

Zaboristov V.N.Kalistratova V.V.Gol'Berg I.P.Tsarina V.S.Markov B.A.Ivannikov V.V.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Sinteticheskogo Kauchuka"

METHOD FOR PRODUCTION OF CIS-1,4-DIENE RUBBER Russian patent published in 1997 - IPC

Abstract RU 2099359 C1

FIELD: production of synthetic rubber. SUBSTANCE: production of butadiene or isoprene-butadiene rubber is carried out by polymerization of monomers which takes place in the medium of aromatic solvent in the presence of Ziegler-Natte catalyst. Compound on the base of rare-earth elements is used as said catalyst. Polymerization is followed by stopping the process, then washing, degassification and dehydration of rubber are carried out. After finishing of polymerization process or at further stages of the process o, o-bis-ester of p-quinone dioxime and 2,4,6-tri-tert-butyl phenol are added into polymerizate, their quantity being 0.01-1.0 mass % as calculated for monomer quantity. EFFECT: improved efficiency of the method. 2 cl, 2 tbl

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RU 2 099 359 C1

Authors

Zaboristov V.N.

Kalistratova V.V.

Gol'Berg I.P.

Tsarina V.S.

Markov B.A.

Ivannikov V.V.

Dates

1997-12-20—Published

1995-03-29—Filed

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