Surlyn 9720 DuPont Packaging & Industrial Polymers EMAA Surlyn 9720 is a zinc ionomer thermoplastic resin. It is available for use in
conventional extrusion and injection equipment, to create various sheets or shapes.Surlyn 9720 thermoplastic resin is an advanced ethylene/methacrylic acid (E/MAA) copolymer, in which the MAA acid groups have been partially neutralized with zinc ions.For wire and cable applications, this grade contains an antioxidant and meets Mil Spec P46124 MR, Type V, Class I requirements.