Investigation of polymerizability of ω-alkenyldioxolanes with α-olefins and alkyl vinyl ethers by modified ziegler-natta catalysts
✍ Scribed by Emo Chiellini; Giovanna Cantoni; Roberto Solaro
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 568 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Results are presented of a n 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 TiC14 or MgC12supported titanium and triisobutylaluminum, hexaisobutyltetraalumoxane, or bisdiethylaluminum sulfate. Homopolymerization experiments were performed on AIGP a t temperatures of -78,25, and 5OOC; only those at 50°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 a-olefin and of the vinyl ether, without any appreciable amount of either copolymers or homopolymers of the dioxolane containing monomers. 0 1996 John Wiley & Sons, Inc.