1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-4-methyl-, (3aR,4R,7aS)-rel-, polymer with 1,2-ethanediol and ethenylbenzene 95566-44-2 Polymer with styrene, ethylene glycol and cis-3-methyl-4-cyclohexene-cis,cis-1,2-dicarboxylic anhydride