THE POLYMERIZATION OF OLEFINS IN THE PRESENCE OF HOMOGENEOUS MONOCOMPONENT ORGANOTITANIUM CATALYSTS

Ethylene polymerization kinetics was studied in a medium of n-heptane, toluene and ethyl chloride in the presence of benzyl derivatives of titanium (C6H5CH2)nTiXm, where X groups OC5H5, Cl, and OC2H15; n = 2 - 4, m = 1 - 2. The polymerization of ethylene and propylene took place using organosilicon catalysts: 2,2,4,4-tetramethyl-4-chloro-2,4 disilylbutyl titaniumtrichloride and 2,4-dimethyl-2,4-dimethyl-2,4-diethyl-4-chloro-2,4-disilylbutyltitanium trichloride. The organosilicontitanium catalysts displayed a high stability and did not lose their activity for a period of several months, when stored in an inert atmosphere at room temperature. The activity of these catalysts considerably increases when they are treated with diethylaluminium chloride.