Polymerization studies using modified Ziegler-Natta catalysts: 1. Polymerization of vinyl chloride
β Scribed by R.N. Haszeldine; T.G. Hyde; P.J.T. Tait
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 567 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0032-3861
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Studies on the use of magnesium oxide modified by sodium pyrophosphate, used as a support for TIC14, are described. Support characterization was made using X-ray diffraction, BET and porosimetric methods. Two different periods of time were investigated for impregnation of the support with TIC14; the
## Abstract Polymerization of 2βallylnorbornane using TiCl~4~ catalyst results in a polymer which is 40% insoluble in __o__βxylene at 130Β°C, whereas with TiCl~3~ catalyst, a polymer with 88% insolubility in __o__βxylene at 130Β°C is obtained. The __o__βxyleneβinsoluble fractions gave a very high mel