Catalytic process for polymerizing carbon monoxide and olefin(s) with nitrogen bidentate ligand
AssigneeShell Oil Company
InventorEit Drent
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Abstract
The invention relates to compositions that may be used as catalysts for the preparation of polymers of carbon monoxide and olefinically unsaturated hydrocarbons. The invention also relates to processes using the catalyst compositions of the invention to prepare said polymers. The processes comprise contacting the monomers in the presence of a catalyst obtained from the reaction of a Group VIII metal compound with a nitrogen bidentate ligand, and an anion of a non-hydrohalogenic acid having a pKa of less than 6.
Claims40
A process for preparing a polymer which comprises contacting carbon monoxide and an olefinically unsaturated hydrocarbon in the presence of a catalyst wherein the catalyst is obtained by reacting
- (1) a compound of a Group VIII metal selected from the group consisting of palladium, cobalt and nickel,
- (2) an anion of a non-hydrohalogenic acid having a pKa less than 6, and
- (3) a nitrogen bidentate ligand of the general formula ##STR7## wherein X and Y represent the same or different organic bridging groups, each having a bridge containing three or four atoms, wherein at least two of the atoms in the bridge are carbon atoms, and under conditions suitable to prepare a polymer.
A process for preparing a linear alternating polymer of carbon monoxide and at least one olefinically unsaturated hydrocarbon which comprises contacting carbon monoxide and at least one olefinically unsaturated hydrocarbon in the presence of a catalyst obtained from (1) a palladium compound, (2) an anion of a non-hydrohalogenic acid having a pKa less than 6, and (3) a nitrogen bidentate ligand of the general formula ##STR8## wherein X and Y represent the same or different organic bridging groups, each having a bridge containing three or four atoms, wherein at least two of the atoms in the bridge are carbon atoms, and under conditions suitable to prepare a linear alternating polymer.
Dependencies are inferred from the claim text.