Wf. Lee et al., SYNTHESIS AND CURING BEHAVIOR OF DIIMIDE-DIACID-MODIFIED SATURATED POLYESTER, Journal of applied polymer science, 50(2), 1993, pp. 259-270
The polyester and diimide-diacid-modified polyester prepolymer have be
en synthesized with different molecular weights through melt polyconde
nsation of 1,6-hexanediol (HD), trimethylol propane (TMP), isophthalic
acid (IPA), diimide diacid, and phthalic anhydride (PA) at various mo
lar ratios. The prepolymers were then mixed with an equivalent phenol-
blocked TDI and/or HMDI in m-cresol in deriving the polyester urethane
varnishes. The degree of crosslinkage and thermal behavior have been
investigated here. (C) 1993 John Wiley & Sons, Inc.