A catalyst composition for polymerizing alpha-olefins is prepared by treating a carrier containing OH groups with an organomagnesium composition and contacting the thus-formed magnesium-containing carrier with a solution of a titanium (IV) alkoxide and a brominating and/or chlorinating agent. The adjustment...http://www.google.fr/patents/US4618662?utm_source=gb-gplus-shareBrevet US4618662 - Catalyst composition for polymerizing alpha-olefins
Catalyst composition for polymerizing alpha-olefins
