Process for the preparation of polyketone copolymers and copolymer wash with liquid comprising carboxylic compound

摘要

Process for the preparation of copolymers of carbon monoxide with one or more olefinically unsaturated compounds, by copolymerizing the monomers in the presence of a catalyst composition containing a Group- VIII metal and washing the formed copolymer by contacting the copolymer with a liquid which contains, dissolved in a solvent, a dicarboxylic or tricarboxylic acid having up to 8 carbon atoms, or a zinc, aluminum or magnesium salt thereof.