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The catalytic effect of Mo Cl_n (OR)_(4_n)-(i-Bu)_2AlOPh on the polymerization of butadiene inhydrogenated gasoline is studied (R is alkyl, cycloheptyl, phenyl of C_(4_16)). In this system, the solu-bility and the catalytic activity of the catalyst do not depend on whether the number of carbon atomsin R group is odd or even. The R group with the primary and secondary carbon atom has a fairlygreat influence on the catalytic activity. When R is an alkyl, the catalytic activity increases and therange of Al/Mo values that keeps higher conversion of butadiene is broadened as the size of the Rgroup increases. The content of 1,2-units in the polymer hardly varies with the size of the R group.
The catalytic effect of Mo Cl_n (OR) _ (4_n) - (i-Bu) _2AlOPh on the polymerization of butadiene in hydrogenated gasoline is studied (R is alkyl, cycloheptyl, phenyl of C_ -bility and the catalytic activity of the catalyst do not depend on whether the number of carbon atoms in R group is odd or even. The R group with the primary and secondary carbon atom has a fairly significant impact on the catalytic activity. When R is an alkyl , the catalytic activity increases and therange of Al / Mo values that keeps higher conversion of butadiene is broadened as the size of the Rgroup increases. The content of 1,2-units in the polymer hardly varies with the size of the R group.