Polymerization of propadiene. I. Comparison of catalytic systems in relation to polymer structure and polymerization by a new Ni-based catalyst

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Enk, J.E. van den and Ploeg, H.J. van der (1971) Polymerization of propadiene. I. Comparison of catalytic systems in relation to polymer structure and polymerization by a new Ni-based catalyst. Journal of Polymer Science, Part A-1: Polymer chemistry, 9 (8). pp. 2395-2402. ISSN 0449-296X

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Abstract:A literature survey is given of the methods of preparation of 1,2-and 1,2,2,1-polyallene. The spectroscopic data and other physico-chemical properties are compiled. Spectral analysis of the products in relation to the catalyst used leads to conclusions with regard to the effect of electron-donating and electron-withdrawing ligands to the transition metal of the catalyst on the ratio of 1,2 to 1,2,2,1-polyallene structural units in the polymer obtained. This hypothesis enabled us to prepare a structurally homogeneous 1,2 polyallene in almost quantitative yield. The catalyst was prepared by adding propadiene to a benzene solution of Ni(II) acetylacetonate followed by addition of triisobutylaluminum. This sequence of addition appeared to be the essential factor for obtaining an active catalyst. A kinetic scheme for the polymerization is put forward.
Item Type:Article
Copyright:© 1971 Wiley InterScience
Link to this item:http://purl.utwente.nl/publications/70791
Official URL:http://dx.doi.org/10.1002/pol.1971.150090825
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