| 摘要 |
FIELD: production of synthetic rubber. SUBSTANCE: method is carried out in the presence of catalytic system and aluminium compound. Said system contains complex of halide, carboxylate or acetyl acetonate of cobalt with triphenyl phosphine, its quantity being 0.01-0.50 moles per 1 mole of monomer. Isobutyl aluminium oxane having general formula (i-CH)Al(OAl-i-CH)OAl(i-CH) wherein n=0-20 is used as mentioned above aluminium compound. The process takes place at (-20)-(+20) C by preliminary interaction of components of catalytic system with monomer, atomic ratio of Al: CO being 50-400. Content of vinyl units in desired 1,2-polybutadiene is more 85 %, crystallinity of desired product is 20-50 %. EFFECT: improves efficiency of the method. |
