110650-69-6 2,5-Furandione, polymer with 2-methyl-1-propene 2-Methyl-1-propene, polymer with 2,5-furandione 26426-80-2 97048-07-2 Isobutylene/MA copolymer Maleic anhydride, isobutylene copolymer Polyelectrolyte 60