Results are presented of an investigation on the polymerizability of functional olefins, such as allylisopropylidene glycerol (AIPG) and undecenylisopropylidene glycerol (UIPG), in the presence of conventional and modified Ziegler-Natta catalysts based on TiCl4 or MgCl2-supported titanium and triisobutylaluminum, hexaisobutyltetraalumoxane, or bisdiethyl- aluminum sulfate. Homopolymerization experiments were performed on AIGP at temperatures of -78, 25, and 50 degrees C; only those at 50 degrees C provided appreciable amounts of polymeric materials insoluble in methanol, whose structures comprise monomeric units derived from opening both dioxolane rings and vinyl double bonds. In spite of all attempts and precautions, polymerization experiments carried out on mixtures of the functional olefins AIPG and UIPG with either 4-methyl-1-pentene or isopropyl vinyl ether gave rise to the homopolymers of the nonfunctional alpha-olefin and of the vinyl ether, without any appreciable amount of either copolymers or homopolymers of the dioxolane containing monomers.

Investigation of the polymerizability of ?-alkenyldioxolanes with a-olefins and alkyl vinyl ethers by modified Ziegler-Natta catalysts

CHIELLINI, EMO;SOLARO, ROBERTO
1996-01-01

Abstract

Results are presented of an investigation on the polymerizability of functional olefins, such as allylisopropylidene glycerol (AIPG) and undecenylisopropylidene glycerol (UIPG), in the presence of conventional and modified Ziegler-Natta catalysts based on TiCl4 or MgCl2-supported titanium and triisobutylaluminum, hexaisobutyltetraalumoxane, or bisdiethyl- aluminum sulfate. Homopolymerization experiments were performed on AIGP at temperatures of -78, 25, and 50 degrees C; only those at 50 degrees C provided appreciable amounts of polymeric materials insoluble in methanol, whose structures comprise monomeric units derived from opening both dioxolane rings and vinyl double bonds. In spite of all attempts and precautions, polymerization experiments carried out on mixtures of the functional olefins AIPG and UIPG with either 4-methyl-1-pentene or isopropyl vinyl ether gave rise to the homopolymers of the nonfunctional alpha-olefin and of the vinyl ether, without any appreciable amount of either copolymers or homopolymers of the dioxolane containing monomers.
1996
Chiellini, Emo; Cantoni, G; Solaro, Roberto
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/51793
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 6
social impact