The thermal behavior of allyl PPO and its cured resin were investigated. In the allyl PPO curing process, the specific temperatures were T-gel = 173.6 degrees C, Tc re = 225.4 degrees C, and Ttreat = 237.7 degrees C, and the activation energy (E) was 122 kJ/mol. The average number of PPO molecular units between two crosslinking points was about 20. In the degradation process of cured allyl PPO resin, the temperature at which mass loss equaled 1% was much higher than 300 degrees C. The ER for degradation was calculated as 125 kJ/mol, with a degradation fraction (a) in the range of 0.15-0.65, or 117 kJ/ mol with an a of 0.10-0.90. The most probable mechanism function of decomposition of the cured allyl PPO resin was f(alpha) = 2(1 - alpha)3/2 or g(alpha) = (1 - alpha)-112 - 1. The thermocompressed laminate of the allyl PPO blending with an additive resin (made from BDM and DP) exhibited the desired properties. (c) 2006 Wiley Periodicals, Inc.