1,3-Isobenzofurandione, polymer with 2,2-bis(hydroxymethyl)-1,3-propanediol, 1,2-ethanediol, 2,5-furandione and oxybis(propanol) 68133-64-2 Maleic anhydride, phthalic anhydride, ethylene glycol, dipropylene glycol, pentaerythritol polymer