| 摘要 |
Novel copolymers of carbon monoxide with one or more optionally alkyl-substituted cyclopentenes, are obtainable by contacting the monomers with a catalyst composition solution comprising: (a) a palladium compound, (b) an anion of an acid with a pKa of less than 2, and (c) a bidentate ligand containing phosphorus, sulphur or nitrogen, with the proviso that when a bidentate ligand chosen from nitrogen, sulphur or aromatic phosphorus containing compounds is used as component (c), the catalyst composition additionally comprises a meta-dinitrobenzene compound as component (d).
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