Heat-resistant co-polyester from 9,9-bis(4-hydroxy-phenyl)fluorene

摘要

A heat-resistant polyester having a structure represented by the formula (I): -X-Y)mX-Z)n(I) wherein X represents the structure (A): <IMAGE> (A) wherein R represents hydrogen, methyl, or ethyl, Y represents the structure (B): <IMAGE> (B) Z represents the structure (C): -OC(CH2)lCO-(C) wherein l is an integer of 2 to 6, and m and n are independent repeating numbers, the mole ratio of Y component and Z component in the formula (I) being 1/99 to 99/1 and said polyester having an inherent viscosity ( eta inh) of at least 0.6 dl/g as determined at a temperature of 30 DEG C. in a solution of 0.5 g of the polyester in 100 ml of a mixture of 60% by weight of phenol and 40% by weight of 1,1,2,2-tetrachloroethane.