Polymerization of Phenyl-1,3-butadienes in the Presence of Ziegler-Natta Catalysts
β Scribed by Stefania Pragliola; Marco Cipriano; Antonella Caterina Boccia; Pasquale Longo
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 179 KB
- Volume
- 23
- Category
- Article
- ISSN
- 1022-1336
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π SIMILAR VOLUMES
Ethylene polymerization reactions with many Ziegler-Natta catalysts exhibit several features which differentiate them from polymerization reactions of β£-olefins: a relatively low ethylene reactivity, higher polymerization rates in the presence of β£-olefins, a high reaction order with respect to ethy
Grignard reagent PhMgCl was added during the preparation of the catalyst system MgCl 2 /di-n-butyl phthalate (DNBP)/TiCl 4 {AlEt 3 /diphenyl dimethoxyl silane (DPDMS) to improve its performance. It was found that PhMgCl could enhance both the activity of the catalyst and the isotacticity of the prod
We are grateful to funds from the Ministerium fΒΈr Wissenschaft und Forschung, NRW, the Deutsche Forschungsgemeinschaft, the Max-Planck-Gesellschaft, and the Fonds der Chemischen Industrie.
Propylene polymerization was investigated with a sequential addition of Ziegler-Natta and metallocene catalysts. From the fact that the molecular weights of polypropylene (PP) produced with Ziegler-Natta and with metallocene catalysts differ, it was possible to control the molecular weight distribut