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AssigneeDsm IP Assets B.V.
InventorsEdwin IJpeij, Henricus Arts, Gerardus van Doremaele, Felix Beijer, Francis van der Burgt, Martin Zuideveld
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The invention related to a process for the polymerization of at least one aliphatic C2-20 or aromatic C4-20 hydrocarbyl mono- or multiolefin in the presence of a catalyst and an aluminum comprising co-catalyst, wherein the catalyst comprises a composition of a metal-organic reagent, a spectator ligand and optionally at least one equivalent of a hydrocarbylating agent. The invention further relates to a polymer obtainable by the process of the invention.
A process comprising polymerizing at least one aliphatic C2-20 hydrocarbyl mono- or multiolefin in the presence of a catalyst and an aluminum-comprising co-catalyst, wherein the catalyst is a composition comprising a metal-organic reagent, a spectator ligand and optionally at least one equivalent of a hydrocarbylating agent, and wherein the metal organic reagent is represented by MLjXp, where M is Ti, X is a monoanionic ligand bonded to M, L is a neutral ligand bonded to M, j represents an integer denoting the number of neutral ligands L, and p is the valence of the metal M, and wherein the spectator ligand is an imine ligand or an HA adduct thereof, wherein HA represents an acid of which H represents its proton and A represents its conjugate base.
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Monomers containing three or four carbon atoms: propene
Metallocenes
Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double
Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: copolymers of ethene with alpha-alkenes, e.g. EP…
Term ended 30 Jul 2025 (estimated)
This application is the U.S. national phase of international application PCT/EP2004/008710, filed 3 Aug. 2004, which designated the U.S. and claims benefit of EP 03077434.3, filed 4 Aug. 2003, and EP 04075990.4, filed 1 Apr. 2004, the entire contents of each of which are hereby incorporated by reference.
The invention relates to a process for the preparation of a polymer comprising at least one aliphatic or aromatic hydrocarbyl C2-20 mono- or multiolefin in the presence of a catalyst and an aluminum comprising co-catalyst.
Such a process is described in EP416815.
Polymerisation Equipment.
The batch copolymerisation was carried out in a polymerisation equipment, having a catalyst dosing vessel equipped with a catalyst dosing pump for the addition of the catalyst to a 2-liter batch autoclave equipped with a double intermig stirrer and baffles. The reactor temperature was controlled by a Lauda Thermostat. The feed streams (solvents and monomers) were purified by contacting them with various absorption media as is known in the art. During polymerisation, the ethylene (C2) and propylene (C3) were continuously fed to the gas cap of the reactor. The pressure of the reactor was kept constant by means of a back-pressure valve.
Copolymerisation Experiments.