| 摘要 |
<p>A catalyst and a process for the preparation of homopolymers and copolymers of alpha monoolefins by means of a catalyst system comprising (1) a titanium halide of the formula TiCl3m AlCl3 where m is a number from 0 to 0.5, (2) a coordination complexing agent, the use of which is optional, and (3) an appropriate conventional aluminum-alkyl, the titanium halide (1) and the complexing agent (2), if use, having been milled together before use, wherein the catalyst system employed contains, as a further component (4), a sterically unhindered phenolic compound.</p> |
