Patent ID: 9346896
Filing Date: 2016-05-24
CPC Classification: B01J,C08F,Y02P

Claim Text:
1. A catalyst composition comprising: (a) at least one metallocene compound; and (b) at least one activator-support; wherein the at least one activator-support comprises at least one silica-coated alumina treated with at least one electron-withdrawing anion, wherein: the at least one silica-coated alumina has a weight ratio of alumina to silica in a range from about 1:1 to about 100:1, the at least one electron-withdrawing anion comprises fluoride, and a catalyst activity of the catalyst composition is greater than that of a catalyst system containing the at least one metallocene compound and a silica-alumina treated with the at least one electron-withdrawing anion, under the same polymerization conditions.