Microwave‐Assisted Syntheses in Recyclable Ionic Liquids: Photoresists Based on Renewable Resources
CHEMSUSCHEM(2015)
Abstract
The copoly(2-oxazoline) pNonOx(80)-stat-pDc(=)Ox(20) 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 250g/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. pNonOx(80)-stat-pDc(=)Ox(20) can be used as polymer in a photoresist (resolution of 1m) based on UV-induced thiol-ene reactions.
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Key words
copolymerization,ionic liquids,microwave chemistry,renewable resources,ring-opening polymerization
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