It is also preferred, in one embodiment, that the dicarboxylic acid not possess other reactive groups than the acid groups, {HEAD ~ at least groups} that readily react with {TAIL ~ primary amine functionalities} 
readily react with
It is also preferred , in one embodiment , that the dicarboxylic acid not possess other reactive groups than the acid groups , { HEAD ~ at least groups } that readily react with { TAIL ~ primary amine functionalities }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL