Synonyms: 4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-, polymer with ethenylbenzene, ethenylmethylbenzene, 1H-indene and (1-methylethenyl)benzene;Styrene, .alpha.-methylstyrene, vinyltoluene, indene, dicyclopentadiene polymer;styrene/methylstyrene/vinyltoluene/cyclopentadiene/indene;Styrene, alpha-methylstyrene, vinyltoluene, dicyclopentadiene, indene polymer