Three grades of Vistamaxx propylene-ethylene copolymers from ExxonMobil Chemical Co., Houston, have received approval from the FDA for use in flexible and rigid food packaging applications. Used in films and compounding (as a polypropylene modifier), these metallocene-catalyzed TPEs are also compliant with EU-Directive 2002/72/EC for food contact. Global market development manager William Ramsey notes that Vistamaxx elastomers for food contact can have a maximum of 18% ethylene content and up to 25 MFR. The approved grades are: Vistamaxx 6102: 16% ethylene content, 3 MFR, 67 Shore A hardness. Vistamaxx 6202: 15% ethylene, 20 MFR, 61 Shore A. Vistamaxx 3000: 11% ethylene, 8 MFR, 86 Shore A. More food-contact grades are in development. These products are said to provide outstanding film sealing performance, stemming from broad compatibility, very low seal-initiation temperature, and high hot-tack. They are also suitable for modifying PP food containers, kitchen tools and utensils, and toys. Because Vistamaxx improves flexibility and impact resistance without affecting tensile strength, it can help prevent cracking in these applications. For property data, visit www.ptonline.com/plaspec. (281) 870-6607 • www.exxonmobil chemical.com
ExxonMobil Chemical Co.
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