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US 6,639,028 B2Granted
Process for the continuous gas-phase (co-)polymerization of olefins in a fluidized bed reactor
AssigneeBP Chemicals Limited
InventorsDavid Heslop, Jean-Pierre Isnard, Myung-Je Shin
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Abstract
A process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor using a chromium oxide catalyst. The polymerization is performed in the presence of a process aid additive.
Claims16
A process for the continuous gas-phase (co-)polymerisation of olefins comprising (co-)polymerising one or more olefins in a polymerisation zone of a fluidised bed reactor using a chromium oxide catalyst in the presence of a process aid additive, wherein the additive comprises at least one of the components selected from the group consisting of
- (1) a polysulphone copolymer,
- (2) a polymeric polyamine, and
- (3) an oil-soluble sulphonic acid.
Dependencies are inferred from the claim text.