Cationic cyclization of neoprene with a diethylaluminum chloride and organic chloride catalyst system

Chaoyang Wang, Xuepin Huang, Jihua Yang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The cyclization of neoprene was achieved with the aid of a cationic catalyst system based on diethyl-aluminum chloride (Et2AlCl) and an organic chloride, allyl chloride (CH2 = CHCH2Cl) or benzyl chloride (C6H5CH2Cl). The main parameters of the cyclization process were investigated. Elastomers with low intrinsic viscosity, ready solubility and some gelling were obtained. Xylene was a good solvent for the cyclization process, which took place in a very short time (≤5 min). The products were characterized with IR, 1H-NMR, differential scanning calorimetry, and gel permeation chromatography. The polycyclic structure was determined. The degree of cyclization and the incorporated solvent content were estimated with a 1H-NMR method.

Original languageEnglish (US)
Pages (from-to)2227-2231
Number of pages5
JournalJournal of Applied Polymer Science
Volume86
Issue number9
DOIs
StatePublished - Nov 28 2002

Keywords

  • Cationic cyclization
  • Elastomers
  • Modification
  • Rubber

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