Patent ID: 6555631
Filing Date: 2003-04-29
Classification: C08F,C08L

Abstract:
A process for producing a blend of two or more polyethylenes, comprising the step of contacting:(1) ethylene; (2) an active ethylene oligomerization catalyst under conditions to oligomerize at least a portion of the ethylene to one or more &agr;-olefins of the general formula R18CH&boxH;CH2, wherein R18 is alkyl containing an even number of carbon atoms; (3) a first active polymerization catalyst under conditions to copolymerize ethylene and the &agr;-olefins generated from the active ethylene oligomerization catalyst; and (4) a second active polymerization catalyst under conditions to polymerize ethylene, but not readily copolymerize ethylene and &agr;-olefins; wherein each of the oligomerization catalyst, the first polymerization catalyst and the second polymerization catalyst is chemically distinct from the other two.