Catalyst compositions and processes for polymerizing carbon monoxide and olefinically unsaturated hydrocarbons
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, an anion of a non-hydrohalogenic acid having a pKa of less than 6, and an organic oxidant.
Claims49
A process for preparing a polymer which comprises contacting carbon monoxide and at least one 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 with a pKa less than 6,
- (3) a nitrogen bidentate ligand of the general formula ##STR8## wherein X and Y represent similar or different organic bridging groups, each bridging group containing three or four atoms, wherein at least two of the atoms in each bridging group are carbon atoms, and
- (4) an organic oxidant, and under conditions suitable to prepare a polymer.
A process for preparing a polymer which comprises contacting carbon monoxide, ethylene 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 2, (3) a nitrogen bidentate ligand of the formula ##STR9## wherein X and Y represent similar or different organic bridging groups, each bridging group having a bridge containing three or four atoms, wherein at least two of the atoms in the bridge are carbon atoms, and (4) an organic oxidant, and under conditions suitable to prepare a polymer.
Dependencies are inferred from the claim text.