Efficient Catalyst for Low Temperature Solid-Phase Imidization of Poly(amic acid)
- 7 August 2004
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 33 (9) , 1156-1157
- https://doi.org/10.1246/cl.2004.1156
Abstract
Efficient base-catalysts for low temperature solid-phase imidization of poly(amic acid) (PAA) have been found. Thermal imidization of PAA proceeded smoothly in the presence of 1 wt % of strong bases such as 1,4-diazabicyclo[2.2.2]octane (DABCO) and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) at 200 °C in a short time, and no residues of DBU remained in the polyimide film.Keywords
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