Polymerization of phenylacetylene by hafnocene dichloride/RxAlCl3−x catalytic systems
✍ Scribed by Michael G. Siskos; Efthymios P. Bokaris; Antonios K. Zarkadis; Georgia Kyriakakou
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 271 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
AMtract--The polymerization of phenylacetylene was investigated using the homogeneous catalysts Cp2 HfCI 2/R~ AIC13 _~. The reaction was performed in hydrocarbon and chlorinated hydrocarbon solvents at 0-aS0 °. In all cases, the polymers were coloured, soluble, polyconjugated and paramagnetic; they were characterized by i.r., tH-NMR, u.v.-visible and ESR spectroscopy.
📜 SIMILAR VOLUMES
## Abstract The additive effect of triphenylphosphine (Ph~3~P) was investigated in 1,3‐butadiene polymerization with cobalt dichloride (CoCl~2~) activated by methylaluminoxane (MAO); the catalytic system resulted in slowly‐initiated living polymerization with a high __cis__‐1,4 content (about 99%)
## Ž . methylaluminoxane MAO catalysts, 4 exhibited the significant catalytic activity for copolymerization of ethylene with Ž . 1-hexene, resulting in obtaining a copolymer with relatively high 1-hexene content 20.2-36.5 mol% with relatively narrow molecular weight distribution.