Patent ID: 6174971
Filing Date: 2001-01-16
Classification: C08F

Abstract:
A catalyst for polymerizing ethylene comprising a reaction product of the following in the order of:a) an alkyl magnesium compound of the general formula MgRR' where R and R' are alkyl groups of 1-10 carbon atoms and R and R' may be the same or different;b) an aluminum alkyl;c) an alcohol of the general formula R*OH wherein the alcohol is linear or branched and wherein R* is an alkyl group of 4-20 carbon atoms,wherein the alkyl magnesium compound and the alcohol react in the presence of the aluminum alkyl to form a soluble magnesium compound of magnesium dialkoxide of the general formula Mg(OR"").sub.2 where R"" is a hydrocarbyl of 1 to 20 carbon atoms;d) a chlorinating agent capable of partially chlorinating the soluble magnesium compound by exchanging one chlorine for one alkoxide of the magnesium compound;e) a first chlorinating-titanating agent;f) a second stronger chlorinating-titanating agent; andg) an organoaluminum compound preactivating agent.