KONG Minghua, WU Lianying, XU Xianzhen, et al. Kinetics of polyesterification: ethylene glycol with maleic anhydride and tetrabromo phthalic anhydride[J]. CIESC Journal, 2015, (11): 4446-4451.
Polyesterifications of ethylene glycol (EG) with maleic anhydride (MA) and tetrabromo phthalic anhydride (TBPA) without foreign acid were carried out under constant reaction temperatures of 162—192℃ (rather than at the constant oil-bath temperature) and at different molar ratios of diol to diacid of 1.2—1.8 (MA/EG). The different combinations of the reaction order on the basis of Show-an Chen model were discussed. 1-1 model can describe experimental results very well
and kh[H2O] was greater than zero. The reaction rate constants for both systems were calculated. Besides
It was found that the final COOH conversion was increased with increasing reaction temperatures and molar ratios of diol to diacid.