Catalyst systems based on transition metal complexes for carbon monoxide copolymerization in an aqueous medium

摘要

The invention relates to catalyst systems for the copolymerisation of carbon monoxide and alpha -olefinically unsaturated compounds, containing as essential constituents a) a metal complex of the general formula (I), in which the rests R1 to R4 are linear or branched C2-C28 alkyl substituted by at least one polar functional group which is ionic or has a protonic action, on the basis of elements of groups IVA to VIA of the periodic table, C3-C14 cycloalkyl or alkyl aryl with between 1 and 28 C-atoms in the alkyl part and between 6 and 15 C-atoms in the aryl part; and b) possibly one or more Lewis or protonic acids or a mixture of Lewis and protonic acids.