Thermally stable, rigid bisphenols of the formula ##STR1## WHERE R is ##STR2## or ##STR3## where R.sup.2 is arylene or substituted arylene, and R.sup.1 is hydrogen or acyl, Are used to prepare thermally stable, rigid, ordered polyesters of the formula ##STR4## where R.sup.4 is arylene or substituted arylene, and n is at least about 10.
具有热稳定性和刚性的双
酚的
化学式为##STR1##其中R为##STR2##或##STR3##,其中R.sup.2为芳基或取代芳基,R.sup.1为氢或酰基,用于制备具有热稳定性、刚性和有序性的聚酯,其
化学式为##STR4##其中R.sup.4为芳基或取代芳基,n至少为约10。