| 摘要 |
Novel linear alternating polymers of carbon monoxide with styrene and/or with one or more substituted styrenes, having a number average molecular weight above 30,000, can be prepared by polymerizing the monomers using a catalyst composition based upon: a) a Group VIII metal compound, b) a nitrogen bidentate ligand with the general formula <CHEM> in which X and Y represent identical or different organic bridging groups which each contain three or four atoms in the bridge, of which at least two are carbon atoms, c) an acid with a pKa < -3, and d) an organic oxidizing agent. a
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