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AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsEdgar C. Baker, Jose F. Cevallos-Candau, Fathi D. Hussein, Kiu H. Lee, Allen Noshay
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A process for the production of EPM or EPDM comprising contacting ethylene, propylene, and, optionally, one or more dienes, in a fluidized bed, at a temperature at or above the sticking temperature of the product resin, under polymerization conditions, with (i) a prepolymer containing a transition metal catalyst precursor with the proviso that the prepolymer is not sticky at the process temperature; (ii) a hydrocarbyl aluminum and/or a hydrocarbyl aluminum halide cocatalyst,; and, optionally, (iii) a halocarbon promoter; and, optionally, (iv) an inert particulate material having a mean particle size in the range of about 0.01 to about 150 microns wherein the particulate material is either contained in the prepolymer or is independent of the prepolymer, wherein the amount of prepolymer or the combined amount of prepolymer and inert particulate material is sufficient to essentially prevent agglomeration of the fluidized bed and the product resin.
A process for the production of sticky EPM or EPDM comprising contacting the monomers ethylene, propylene, and, optionally, one or more dienes, in a gas phase fluidized bed, at a temperature at or above the sticking temperature of the product resin, under polymerization conditions, with
A process for the production of a sticky EPDM comprising contacting the monomers ethylene, propylene, and a diene in a gas phase fluidized bed, at a temperature at or above the sticking temperature of the product EPDM, under polymerization conditions, with
Dependencies are inferred from the claim text.