A solid catalyst component for forming, in combination with an organoaluminium compound, a catalyst for polymerization of .alpha.-olefins is provided, whereby .alpha.-olefin polymers having high stereoregularity or stereospecificity are produced in a high yield. The catalyst component is a product of...http://www.google.es/patents/US4242229?utm_source=gb-gplus-sharePatente US4242229 - Solid catalyst components for polymerization of .alpha.-olefins
Solid catalyst components for polymerization of .alpha.-olefins