Pure WCl4-catalyst for polymerization of norbornene and monosubstituted acetylenes
✍ Scribed by Hynek Balcar; Marta Pacovská
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 428 KB
- Volume
- 115
- Category
- Article
- ISSN
- 1381-1169
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📜 SIMILAR VOLUMES
The first heterogeneous catalyst which affords polymerization of substituted acetylenes into readily available high molecular weight polymers is reported. The catalyst (Rh/PBI) has been prepared by supporting di-m-chlorobis(h 4 -cycloocta-1,5-diene)dirhodium(i), [Rh(cod)Cl] 2 , on commercial polyben
## Abstract A series of pentavalent tantalum and niobium complexes with aryloxy ligands was prepared, and their catalytic behavior for the ROMP of norbornene was studied in the presence of an alkylaluminum cocatalyst. Tantalum complexes **1**–**4** showed very high activity for the ROMP of NBE in c
The polymerization of aliphatic disubstituted acetylenes was examined with MoOCl 4 -n-Bu 4 Sn-EtOH (1/1/2) ternary catalyst in anisole at 0 °C. Various linear aliphatic disubstituted acetylenes such as 2-nonyne provided polymers with narrow molecular weight distributions (weight-average molecular we