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IPC

(21) (22)

Application

96106344/04, 1996-04-09

(22)

Actual filing date

1996-04-09

(45)

Published

1999-05-10

(72)

Inventor

Smirnova L.V.Kropacheva E.N.Zolotarev V.L.Sazykin V.V.Aksenov V.I.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD OF PREPARING GEL-FREE LINEAR AND BRANCHED CIS-1,4- POLYBUTADIENE Russian patent published in 1999 - IPC

Abstract RU 2130036 C1

FIELD: manufacture of industrial rubber products. SUBSTANCE: method comprises adding monomer to water-containing hydrocarbon solvent, thermostating the resulting solution at temperatures between -8 C to -78 C, adding cobalt salt and alkylaluminium chloride solutions, raising mixture temperature to polymerization temperature (20-400 C). In this case, varied cobalt salt, water, alkylaluminium chloride concentrations and ratios thereof as well as monomer conversion degrees make it possible to synthesize linear and branched polymer without changing component composition of catalyst system. Cis-1,4 polybutadiene synthesized by claimed method is used in tire industry to prepare impact-resistant polystyrene for manufacturing industrial rubber products. EFFECT: more efficient preparation method. 17 ex, 1 tbl

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RU 2 130 036 C1

Authors

Smirnova L.V.

Kropacheva E.N.

Zolotarev V.L.

Sazykin V.V.

Aksenov V.I.

Dates

1999-05-10—Published

1996-04-09—Filed

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