Thermally stable, rigid polyesters from aromatic dibasic acids and thermally stable, rigid bisphenols

摘要

Thermally stable, rigid bisphenols of the formula <IMAGE> WHERE R is <IMAGE> or <IMAGE> where R2 is arylene or substituted arylene, and R1 is hydrogen or acyl, ARE USED TO PREPARE THERMALLY STABLE, RIGID, ORDERED POLYESTERS OF THE FORMULA <IMAGE> where R4 is arylene or substituted arylene, and N IS AT LEAST ABOUT 10.