derived from hydroxy carboxylic acids

Full Title

Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule (polyester-amides C08G69/44; polyester-imides C08G73/16) > Polyesters containing oxygen in the form of ether groups (C08G63/42, C08G63/58 take precedence) > derived from hydroxy carboxylic acids