1,3-Isobenzofurandione, polymer with 2,5-furandione, 1,2-propanediol and 2,2,4-trimethyl-1,3-pentanediol 67989-79-1 Phthalic anhydride, maleic anhydride, propylene glycol, 2,2,4-trimethyl-1,3-pentanediol polymer Propylene glycol, 2,2,4-trimethyl-1,3-pentanediol, maleic anhydride, phthalic anhydride polymer