| abstract |
Process for the preparation of copolymers, carbon monoxide with ethene and optionally also another olefinically unsaturated hydrocarbon in the presence of a novel catalyst composition comprisingn a) a palladium compound, b) an anion of an acid with a pKa of less than 4, with the proviso that the acid is not a hydrohalogenic acid, and c) a nitrogen bidentate ligand of the general formulan wherein X and Y represent similar or different organic bridging groups, each containing three or four atoms in the bridge at least two of which are carbon atoms, and optionally, d) an organic oxidant. |