High molecular weight hyperbranched polyetherimides have been synthesized in a single-pot reaction in as little as 2.5 min from an easily synthesized and scalable AB2 monomer using a rapid catalytic arylation method. NMR integration experiments and model compound studies revealed a degree of branching (DB) of 67% for hyperbranched polyetherimide 4 relative to the expected statistical value of 50%. Molecular weights were determined by gel permeation chromatography in two different solvent systems and varied widely. The polymers are highly soluble in common organic solvents and are among the most thermally stable hyperbranched polymers yet prepared.

Original languageEnglish (US)
Pages (from-to)4764-4768
Number of pages5
Issue number15
StatePublished - Jul 27 1999

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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