METHOD OF PREPARING GEL-FREE LINEAR AND BRANCHED CIS-1,4- POLYBUTADIENE

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 p...

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Bibliographische Detailangaben
Hauptverfasser:	KROPACHEVA E.N, ZOLOTAREV V.L, SAZYKIN V.V, AKSENOV V.I, SMIRNOVA L.V
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	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