1. Degradation behaviour and recovery of bisphenol-A from epoxy resin and polycarbonate resin by liquid-phase chemical recycling
- Author
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Yoshiki Sato, Koji Tsujita, Kawai Noboru, and Yasuhiko Kondo
- Subjects
Bisphenol A ,Materials science ,Polymers and Plastics ,Synthetic resin ,Cyclohexanol ,Epoxy ,Condensed Matter Physics ,Fluid catalytic cracking ,chemistry.chemical_compound ,Decalin ,chemistry ,Chemical engineering ,Mechanics of Materials ,visual_art ,Polymer chemistry ,Materials Chemistry ,visual_art.visual_art_medium ,Tetralin ,Polycarbonate - Abstract
In the liquid-phase cracking of bisphenol-A types of epoxy resin and polycarbonate resin at 440 °C in the presence of solvents such as tetralin, decalin or cyclohexanol, we recovered more than 40 wt% of phenol and isopropylphenol as monomers. On the other hand, bisphenol-A, which was common monomer from epoxy resin and polycarbonate resin, could also be recovered with high yield, when reaction was carried out at lower temperature of 300–350 °C. However, degradation of polycarbonate resin did not proceed in the thermal conditions without catalyst. Mechanistic difference between epoxy resin and polycarbonate resin in the liquid-phase cracking is discussed on the basis of the product distribution from resins and their appropriate model compounds.
- Published
- 2005
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