Synonyms: 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-, polymer with 2,5-furandione and 2,2'-oxybis [ethanol];1,3-isobenzofurandione, 3a,4,7,7a-tetrahydro-, polymerwith 2,5-furandione and 2,2'-oxybis[ethanol];1,3-Isobenzofurandione,3a,4,7,7a-tetrahydro-,polymer with 2,5-furandione and 2,2'-oxybis [ethanol]