Gas phase polyketone polymer preparation with preliminary addition of water
AssigneeShell Oil Company
InventorJohannes J. Keijsper
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Abstract
Linear alternating polyketone polymers of carbon monoxide and one or more olefinically unsaturated compounds are prepared by contacting the monomers at elevated temperature and pressure with a catalyst suitable for this purpose, the polymer preparation being carried out as a gas phase polymerization and water being introduced into the polymerization reactor prior to the polymerization.
Claims20
In the process of producing a linear alternating polymer of carbon monoxide and at least one olefinically unsaturated hydrocarbon by contacting the carbon monoxide and hydrocarbon in a reactor under gas phase polymerization conditions and in the presence of a catalyst composition formed from a salt of a Group VIII metal, an acid component having a pKa of at least 2, and a bidentate ligand of phosphorus, nitrogen, or sulfur, the improvement wherein water is added to the reactor prior to commencement of polymerization in an amount of at least about one mole of water per mole of Group VIII metal.
In the process of producing a linear alternating polymer of carbon monoxide and at least one .alpha.-olefin by contacting the carbon monoxide and .alpha.-olefin in a reactor under gas phase polymerization conditions and in the presence of a catalyst composition formed from a palladium salt, an acid component having a pKa of at least 2, and a bidentate phosphorus ligand, the improvement wherein water is added to the reactor prior to commencement of polymerization in an amount of at least about one mole of water per mole of palladium.
In the process of producing a linear alternating polymer of carbon monoxide and ethene, with or without propene, by contacting the carbon monoxide and hydrocarbon in a reactor under gas phase polymerization conditions and in the presence of a catalyst composition formed from a palladium salt, an acid component having a pKa of at least 2, and a bidentate phosphorus ligand, the improvement wherein water is added to the reactor prior to commencement of polymerization in an amount of at least about one mole of water per mole of palladium.
Dependencies are inferred from the claim text.