Ir. Salabarria et al., SYNTHESIS AND CHARACTERIZATION OF EPOXIDIZED PHENOLIC NOVOLACS MODIFIED BY FURFURYL ALCOHOL, Polymer international, 37(1), 1995, pp. 21-26
The possibility of reacting furfuryl alcohol with the p-position of ph
enolic rings, under acid conditions, was proved using different experi
mental techniques: size exclusion chromatography, Fourier transform in
frared spectroscopy and C-13 NMR. This reaction was then used in the m
odification of phenolic novolacs with furfuryl alcohol. After reaction
with epichlorohydrin, epoxidized phenolic novolacs (EPN) modified wit
h furan rings were obtained. They could be cured with aromatic diamine
s in a similar way to conventional EPNs. The presence of furan rings s
hould improve burning resistance and smoke emission characteristics of
the resulting networks.