Ln. Mizerovskii et al., CONDENSATION EQUILIBRIA DURING THE SYNTHE SIS IN MELT OF ACETOXYCARBOXYLIC ACID-BASED POLYESTERS, Vysokomolekularnye soedinenia. Seria A, 37(10), 1995, pp. 1628-1632
A method is proposed for the study of equilibrium polycondensation rea
ctions, which is based on monitoring a single parameter representing t
he equilibrium amount of a low-molecular-mass reaction product passing
into the gas phase. The synthesis of liquid-crystalline polyesters by
transacylation of acetoxycarboxylic acids is characterized by low equ
ilibrium constant and very low solubility of CH3COOH vapors in the mel
t of polyester.