Patent ID: 6734134
Filing Date: 2004-05-11
Classification: C08F

Abstract:
An olefin polymerization catalyst produced by a process comprising:a) contacting a soluble magnesium dialkoxide compound of the general formula Mg(ORâ€³)2 with a halogenating agent capable of exchanging one halogen for one alkoxide to form a reaction product A, where Râ€³ is a hydrocarbyl or substituted hydrocarbyl having from 1 to 20 carbon atoms; b) contacting reaction product A with a first halogenating/titanating agent to form reaction product B; c) contacting reaction product B with a second stronger halogenating/titanating agent to form reaction product C; d) contacting reaction product C with an organoaluminum preactivating agent to form a preactivated catalyst; and e) heating the preactivated catalyst at a temperature in the range of about 90Â° C. to about 150Â° C., for a time in the range of about thirty minutes to about a twenty-four hours to form a finished catalyst.