Advances in the 13C NMR characterization of ethene/propene copolymers, 1
✍ Scribed by Vincenzo Busico; Roberta Cipullo; Anna Laura Segre
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 139 KB
- Volume
- 203
- Category
- Article
- ISSN
- 1022-1352
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## Abstract Copolymers of propene and higher 1‐olefins (1‐butene, 1‐pentene, 1‐hexene, 1‐heptene, 1‐octene, and 4‐methyl‐1‐pentene (4M1P)), prepared with __rac__‐Et(Ind)~2~ZrCl~2~ (EI) and __rac__‐Me~2~Si(2‐MeBenz‐[__e__]Ind)~2~ZrCl~2~ (MBI), were comprehensively analyzed by ^13^C NMR spectroscopy.
## Abstract Ethylene/4‐methyl‐1‐pentene (E/4M1P) copolymers were synthesized by [Me~2~Si(__η__~5~‐Me~4~C~5~)‐(__η__~1~‐N‐^__t__^Bu)TiCl~2~] and methylalumoxane (MAO) catalyst (CG) and analyzed by ^13^C NMR. The low regio‐ and stereoregularity of CG leads to spectral multiplicities which can be ascr
Two kinds of ethylene-l-butene copolymers that were produced by the different procedures, that is, the slurry and the high-pressure polymerizations, were characterized by differential scanning calorimetry (DSC) and carbon-13 nuclear magnetic resonance (W-NMR) spectroscopy. The melting points of both
## Abstract The ^1^H and ^13^C NMR spectra of an alternating ethene/maleic anhydride copolymer and the corresponding acid and sodium salt were reinvestigated with regard to the signals depending on the configuration of the succinyl unit. From these assignments a 85/15 ratio of __threo__‐and __eryth