METHOD OF PREPARING CIS-1,4-POLYBUTADIENES Russian patent published in 2000 - IPC

Abstract RU 2157819 C2

FIELD: organic chemistry. SUBSTANCE: described is method of preparing cis-1,4-polybutadiene by polymerization of butadiene-1,3 in hydrocarbon solvent in the presence of catalyst comprising cobalt compound, alkylaluminium chloride and water using low-temperature treatment of components. Process is carried out in the presence of alkylsubstituted butadiene in amount of 4-35 mole % based on sum of butadiene and alkylsubstituted butadiene. Butadiene and alkylsubstituted butadiene are first prepared in solution of butadiene and aliphate hydrocarbon containing water with toluene content of 2.2- 2.7 vol. % per mixture of solvents and volumetric ratio of alkylsubstituted butadiene to toluene from 0.4 to 3.2. EFFECT: frost-resistant desired product. 8 ex

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RU 2 157 819 C2

Authors

Kropacheva E.N.

Smirnova L.V.

Zolotarev V.L.

Zijatdinov A.Sh.

Sakhabutdinov A.G.

Borejko N.P.

Antipov S.N.

Galiev R.G.

Mustafin Kh.V.

Gil'Mutdinov N.R.

Rjazanov Ju.I.

Kurochkin L.M.

Pogrebtsov V.P.

Burganov T.G.

Dates

2000-10-20Published

1998-11-11Filed