Patent ID: 8809472

Claim:
A method, comprising contacting an olefin, a catalyst, a diluent, and at least one melt index modifier (MIM) in a polymerization reactor under conditions suitable to form a polyolefin and recovering the polyolefin, wherein the polyolefin melt index is increased by at least about 50%, wherein the normalized catalyst activity is decreased by less than 10%, and wherein the MIM is characterized by the general formula R 1 —HC═CH—R 2 or R 3 R 4 C═CH 2 where R 1 , R 2 , R 3 , R 4 are each independently selected from the group consisting of a non-aromatic organyl group and where the increase in polyolefin melt index and decrease in normalized catalyst activity are in comparison to the values obtained for these parameters when using an otherwise similar process carried out in the absence of the MIM.