Patent ID: 6043324
Filing Date: 2000-03-28
Classification: C08F,Y10S

Abstract:
A process for olefin polymerization, comprising the steps of:a) providing:i) one or more polymerizable olefins having the general formula CH.sub.2 .dbd.CR.sub.1 R.sub.2, wherein R.sub.1 is selected from the group consisting of hydrogen and a C.sub.1 -C.sub.10 alkyl, and R.sub.2 is selected from the group consisting of hydrogen and a C.sub.1 -C.sub.10 alkyl,ii) a procatalyst comprising titanium, chlorine and magnesium, andiii) a first amount and a second amount of cocatalyst, wherein said first amount and said second amount of cocatalyst comprise aluminum and a C.sub.1 -C.sub.10 alkyl;b) contacting said first amount of said cocatalyst with said procatalyst wherein said first amount of cocatalyst has a concentration of between 0.001 and 2.0 mol/dm.sup.3, to produce a first precontact product;c) contacting said first precontact product with said second amount of cocatalyst and said one or more polymerizable olefins to produce a first polymerized product.