28348-42-7 51121-75-6 Butenedioic acid (E)-, hexanedioic acid, 2,2'-oxybis(ethanol) polymer Hexanedioic acid, polymer with (2E)-2-butenedioic acid and 2,2'-oxybis(ethanol) Hexanedioic acid, polymer with (E)-2-butenedioic acid and 2,2'-oxybis(ethanol)