Living cationic polymerizations initiated by phosgene

M. Zsuga, T. Kelen

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Living cationic polymerization of isobutylene and styrene was performed by using phosgene as initiator and solvent, AlCl3 as coinitiator in homogeneous phase. Polymerization of isobutylene by using phosgene and TiCl4 also proved to be a living process, however, initiation in this case was performed by "H2O" impurities, and the system was heterogeneous. In case of the COCl2/AlCl3 initiating system, ketonic carbonyl functionality was built-in into the polymer. The living character of the process, both in case of AlCl3, and of TiCl4 was demonstrated by the linear increase of -Mn with the cumulative amount of the monomer successively added, and by the conversion and temperature jump at every monomer additon. Observations on the permanence of the color (intensive yellow with IB and deep red with St) also support that the propagating cations are long living. An explanation of the observed phenomena is suggested on the base of Pearson's theory of "hard" and "soft" acids and bases.

Original languageEnglish
Pages (from-to)285-291
Number of pages7
JournalPolymer Bulletin
Volume16
Issue number4
DOIs
Publication statusPublished - Oct 1986

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Phosgene
phosgene
Cationic polymerization
Living polymerization
butenes
polymerization
monomers
Monomers
initiators
styrenes
Styrene
Positive ions
Polymerization
Impurities
Color
color
cations
impurities
acids
Acids

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Living cationic polymerizations initiated by phosgene. / Zsuga, M.; Kelen, T.

In: Polymer Bulletin, Vol. 16, No. 4, 10.1986, p. 285-291.

Research output: Contribution to journalArticle

Zsuga, M. ; Kelen, T. / Living cationic polymerizations initiated by phosgene. In: Polymer Bulletin. 1986 ; Vol. 16, No. 4. pp. 285-291.
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