POLY(4-METHYL STYRENE);POLY(4-METHYLSTYRENE), MONOCARBOXY TERMINATED;1-ethenyl-4-methyl-benzenhomopolymer;4-METHYLSTYRENE RESIN;POLY(4-METHYLSTYRENE), AVERAGE MW CA. 72 ,000 (GPC);poly(4-Methylstyrene)averagemwca.70000;4-methylstyrene homopolymer;Poly(4-methylstyrene) average Mw ~72,000 by GPC, powder