Disclosed are an aromatic hydroxycarboxylic acid resin represented by the following formula (1): ##STR1## wherein each A group is the same or different and individually represents a substituted or unsubstituted phenylene or naphthylene group, R.sup.1 represents a hydrogen atom or a C.sub.1-4 alkyl group,...http://www.google.com/patents/US6040111?utm_source=gb-gplus-sharePatent US6040111 - Aromatic hydroxycarboxylic acid resins and their use
