Preparation and properties of polyarylates both from 2,2′‐bibenzoyl chloride and bisphenols and from biphenyl‐2,2′‐diol and aromatic dicarboxylic acid chlorides

Abstract

AbstractPolyarylates having inherent viscosities up to 1.02 dL/g were synthesized both by the phase‐transfer catalyzed two‐phase polycondensation of 2,2′‐bibenzoyl chloride with various bisphenols and by the high‐temperature solution polycondensation of biphenyl‐2,2′‐diol with aromatic dicarboxylic acid chlorides. All the polyarylates were amorphous and soluble in a variety of organic solvents including N,N‐dimethylformamide, N‐methyl–2‐pyrrolidone, chloroform, m‐cresol, and pyridine. Transparent and flexible films of these polymers could be cast from the chloroform solutions. These polyarylates had glass transition temperatures in the range of 120–250°C and began to lose weight at around 380°C in air. © 1992 John Wiley & Sons, Inc.