| 摘要 |
Catalyst compositions, containing a Group VIII metal and a phosphorus bidentate ligand of the general formula (R<2>)2P-R-P(R<2>)2 in which the groups R<2> are independently ethyl and/or 1-propyl groups, and R represents a divalent organic bridging group connecting the two phosphorus atoms and containing in the bridge 2-4 atoms, of which at least 2 are carbon atoms, and a process for the preparation of polymers wherein linear alternating polymers of carbon monoxide and one or more olefinically unsaturated compounds are prepared by contacting the monomers with said catalyst composition.
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