Microwave-Assisted Syntheses in Recyclable Ionic Liquids: Photoresists Based on Renewable Resources

ChemSusChem. 2015 Oct 26;8(20):3401-4. doi: 10.1002/cssc.201500847. Epub 2015 Sep 10.

Abstract

The copoly(2-oxazoline) pNonOx80 -stat-pDc(=) Ox20 can be synthesized from the cationic ring-opening copolymerization of 2-nonyl-2-oxazoline NonOx and 2-dec-9'-enyl-2-oxazoline Dc(=) Ox in the ionic liquid n-hexyl methylimidazolium tetrafluoroborate under microwave irradiation in 250 g/batch quantities. The polymer precipitates upon cooling, enabling easy recovery of the polymer and the ionic liquid. Both monomers can be obtained from fatty acids from renewable resources. pNonOx80 -stat-pDc(=) Ox20 can be used as polymer in a photoresist (resolution of 1 μm) based on UV-induced thiol-ene reactions.

Keywords: copolymerization; ionic liquids; microwave chemistry; renewable resources; ring-opening polymerization.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Borates / chemistry*
  • Imidazoles / chemistry*
  • Ionic Liquids / chemistry*
  • Microwaves
  • Oxazoles / chemistry*
  • Polymerization
  • Polymers / chemistry
  • Recycling
  • Ultraviolet Rays

Substances

  • 1-hexyl-3-methylimidazolium
  • Borates
  • Imidazoles
  • Ionic Liquids
  • Oxazoles
  • Polymers