Patent ID: 8846835

Claim:
A process to co-polymerize ethylene and at least one co-monomer in the presence of at least one catalyst poison using a combination catalyst to provide a polymer composition comprising a first polymer component and a second polymer component wherein said process comprises: adjusting the ratio of said first polymer component to said second polymer component by altering the amount of scavenger present; wherein said combination catalyst comprises: an inorganic chromium catalyst, a group 4 single site catalyst, one or more activators; and a support; wherein said inorganic chromium catalyst provides said first polymer component and said group 4 single site catalyst provides said second polymer component; wherein said catalyst poison reduces the polymerization activity of said group 4 single site catalyst relative to said inorganic chromium catalyst; and wherein lowering the level of scavenger in ppm (weight of scavenger relative to the weight of polymer produced in parts per million) from a first higher level to a second lower level, increases said ratio of said first polymer component to said second polymer component, and raising the level of scavenger in ppm (weight of scavenger relative to the weight of polymer produced in parts per million) from a first lower level to a second higher level, decreases said ratio of said first polymer component to said second polymer component.