bioresorbable or biodegradable polymers formed from the monomers including sulphonyl diphenol , hydroxybenzoic acid and dicarboxylic acid . the dicarboxylic acid can include aliphatic dicarboxylic acid or a mixture of aliphatic dicarboxylic acid and aromatic dicarboxylic acid . between 25 and 85 molar percent of the polymer is formed from the hydroxybenzoic acid , between 7 . 5 and 37 . 5 molar percent of the polymer is formed from the sulphonyl diphenol , and between 7 . 5 and 37 . 5 molar percent of the polymer is formed from the dicarboxylic acid . polymers can be used for manufacturing fibers and composite devices .