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2 054 010

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C1

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IPC

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Application

93033321/04, 1993-06-15

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Actual filing date

1993-06-15

(45)

Published

1996-02-10

(72)

Inventor

Aksenov V.I.Gozenko L.F.Zaboristov V.N.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Sinteticheskogo Kauchuka"

PROCESS FOR PREPARING 1,2-POLYBUTADIENE Russian patent published in 1996 - IPC

Abstract RU 2054010 C1

FIELD: the invention may be utilized in the synthetic rubber industry, and the resulting polymers in the abrasive, industrial asbestos, industrial rubber and tire industries, and in electrical engineering. SUBSTANCE: butadiene is preliminarily copolymerized with isoprene at a weight ratio from 4: 1 to 1: 4, respectively in the presence of N-butyl lithium in toluene. The resulting statistic co-polymer is reacted with divinylbenzene diethylene glycol dimethyl ether in a reactor and resulting product is added as an nionic catalyst into a polymerizator reactor and mixed with the resulting 1,2- polybutadiene at their weight ratio from 4.0:1.0 to 1.2:1.0. Since the low-molecular weight stream is butadiene-1,3-isoprene copolymer, rubber shows improved technological properties, there is a possibility of either reducing the amount of steam used for degassing purposes or recovering products having lower Mooney viscosity (this is essential for some consumers). EFFECT: more efficient preparation process. 1 dwg, 1 tbl

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RU 2 054 010 C1

Authors

Aksenov V.I.

Gozenko L.F.

Zaboristov V.N.

Dates

1996-02-10—Published

1993-06-15—Filed

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