作者:M. Roha、L. C. Kreider、M. R. Frederick、W. L. Beears
DOI:10.1002/pol.1959.1203813306
日期:1959.7
polymerizations of ethylene at atmospheric pressures utilize heterogeneous catalysts. This paper summarizes some studies of the polymerization of ethylene at atmospheric pressure with nonprecipitate titanium+4 catalyst systems. The nature of the alkylmetal used to make the catalyst influences the occurrence of reduction of titanium which produces the usual heterogeneous state. The highly active alkylmetals must