Titanium trichloride catalyst component and the process for the production thereof.

摘要

Extremely strong, i.e., non-friable TiCl<Sub>3</Sub> Ziegler-type polymerization catalyst components are obtained by prepolymerizing a reduced solid TiCl<Sub>3</Sub> product with a mixture of propylene and linear C<Sub>8</Sub>-C<Sub>18</Sub> alpha-olefin to produce a reduced solid TiCl<Sub>3</Sub> product containing 5 to 35 weight percent of a copolymer of propylene and C<Sub>8</Sub>-C<Sub>18</Sub> alpha-olefin having a ratio of the intensity of the infrared absorption band of the copolymer at 720 cm<Sup>-1</Sup>: the intensity of the infrared absorption band of the copolymer at 975 cm-<Sup>1</Sup> in the range of 0.04 to 0.20.