期刊
POLYMER DEGRADATION AND STABILITY
卷 89, 期 2, 页码 317-326出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2005.01.015
关键词
liquid-phase cracking; monomer recycling; bisphenol-A; epoxy resin; polycarbonate resin
In the liquid-phase cracking of bisphenol-A types of epoxy resin and polycarbonate resin at 440 degrees 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 degrees 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. (c) 2005 Elsevier Ltd. All rights reserved.
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