Macromolecular Rapid Communications, Vol.21, No.13, 891-893, 2000
High-viscosity polyesters from secondary alicyclic 1,4-cyclohexanedicarboxylic acids and hydroquinones with thionyl chloride/pyridine condensing agent
HIgh-viscosity polyester can be prepared by the polycondensation of secondary aliphatic trans-cyclohexanedicarboxylic acid (t-CHDC) and hydroquinones using SOCl2/pyridine condensing agent at 80 degrees C. Incorporation of its cis-isomer significantly affected eta(inh) and the thermal property of the resulting copolymers. The copolymers of t-CHDC, hydroquinones, and p-hydroxybenzoic acid having different monomer sequences were prepared by changing the order of introduction of monomers.