Abstract
The syntheses of soluble polyesters with pendant hydroxy groups were studied. The polyaddition of bisphenol A diglycidyl ether (BPGE) with adipic acid (AA) using tetrabutylammonium bromide (TBAB) as a catalyst at 60°C for 24 h provided a soluble polymer with number-average molecular weight (Mn) =9800 in 79% yield. Certain soluble polyesters were prepared in good yields by the polyaddition of various bisepoxides with dicarboxylic acids under the similar controlled reaction conditions. The reaction of the resulting polymer with diazonaphthoquinone sulfonyl chloride (DNQ), which is a typical photo-decomposable compound, proceeded in 85% degree of esterification to give the corresponding photo-reactive polymer P-2a. Photochemical reaction of P-2a film occurred smoothly by the irradiation with UV-light. The photo-irradiated polymer film became soluble in 3% alkali aqueous solution.
