| 摘要 |
Vinyl/vinylidene halides are polymerised in the presence of a catalyst consisting of (I) a cpd of a gp. IVa-VIa transition metal, and (II) a component prepd by reacting an organoaluminium cpd or organozinc cpd with an oxime or hydroxyester. The catalyst has a high activity, and gives commercially useful polymers at low temps
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