DMAP/Cr(III) catalyst ratio: The decisive factor for poly(propylene carbonate) formation in the coupling of CO2 and propylene oxide

Robert Eberhardt, Markus Allmendinger, Bernhard Rieger

Research output: Contribution to journalArticlepeer-review

193 Scopus citations

Abstract

Highly efficient formation of poly(propylene carbonate) can be achieved in the coupling of CO2 and propylene oxide assisted by 4-(N,N-dimethylamino)pyridine (DMAP) and catalyzed with salen chromium(III) chloride by using DMAP/Cr ratios of less than 2. Under these conditions a possible backbiting mechanism is suppressed, leading to only minor amounts of cyclic carbonate as a side product.

Original languageEnglish
Pages (from-to)194-196
Number of pages3
JournalMacromolecular Rapid Communications
Volume24
Issue number2
DOIs
StatePublished - 20 Feb 2003
Externally publishedYes

Keywords

  • Carbon dioxide
  • Catalysts
  • Copolymerization
  • Polycarbonates
  • Propylene oxide

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