WILMINGTON, Del., June 12, 2008 – DuPont Engineering Polymers announces price increases for acetal and polyester standard resins and higher price increases for specialty resins in the Americas effective July 1, or as contracts permit.

DuPont™ Delrin® acetal will increase $0.10/lb. DuPont Engineering Polymers polyester products will increase $0.15/lb. Increases for specialty products, such as DuPont™ Zenite® LCP, will be higher.

This increase reflects extraordinary escalation in costs for raw materials derived from oil and natural gas, as well as continued acceleration of energy, transportation and logistics costs. DuPont Engineering Polymers has implemented aggressive cost-cutting and consolidated global operating strategies to help absorb raw material increases, but the magnitude of recent and recurring increases makes it imperative for DuPont Engineering Polymers, being firmly committed to operating a long-term sustainable business strategy, to offset some increases.

About DuPont
DuPont Engineering Polymers manufactures and sells Zytel® nylon and Zytel® HTN PPA, Crastin® PBT, Rynite® PET, Delrin® acetal, Hytrel® TPC-ET, DuPont™ ETPV engineering thermoplastic vulcanizates, Minlon® mineral reinforced nylon, Thermx® PCT, Tynex® filaments, Vespel® parts and shapes, Zenite® LCP, to global aerospace, appliance, automotive, consumer, electrical, electronic, industrial, sporting goods and other diversified industries.

DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.