{HEAD ~ The acid component} can comprise {TAIL ~ a mixture} of a C4 C6 dicarboxylic acid and at least one of benzoic acid or a C9 C2 aliphatic dicarboxylic acid 
{ HEAD ~ The acid component } can comprise { TAIL ~ a mixture } of a C4 C6 dicarboxylic acid and at least one of benzoic acid or a C9 C2 aliphatic dicarboxylic acid
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH