DuPont Performance Elastomers to Demonstrate Winning Combination at ACS 2009

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Paper on Improvements of Peroxide Cured AEM Compounds will also be presented

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Improved Flex Properties for Peroxide Cured AEM Compounds

DuPont Performance Elastomers (DPE) will be participating with DuPont Advanced Fibers Systems, (Booth 1523) showcasing Viton® fluoroelastomers , and DuPont™ Vamac® ethylene acrylic elastomers . DPE will also be showing a video in the booth, demonstrating the turbo charger hose extrusion process that makes this duo a winning combination.

Neoprene polychloroprene will also be highlighted for its outstanding physical toughness, wide operating temperature range and resistance to ozone, sun and weather.

In a paper entitled, "Improved Flex Properties for Peroxide Cured AEM Compounds," DuPont Performance Elastomers, Technical Associate Edward McBride, reports test results demonstrating the improvement of dynamic properties of peroxide cured AEM compounds. A combination of factors has produced a step change in performance, so these compounds have dynamic properties that are similar to those of diamine-cured AEM compounds. Studies indicate there are several potential advantages for these peroxide-cured compounds, including the possible elimination of the post-cure step in hose production, less scorch during the extrusion step and the option to use lower cost polyester fibers for reinforcement.

Vamac® ethylene acrylic elastomers (AEM) and Viton® fluoroelastomers (FKM) are a winning combination in the manufacture of turbo charger hoses. Together, their unique properties of temperature performance up to 200°C, low cost, an extrusion process that eliminates silicone (VMQ) wrapping, and better interlayer adhesion than FKM/VMQ, allows turbo charger hoses made with Vamac® and Viton® meet today's tough requirements. A video demonstration of the turbo charger hose extrusion process will be available in DuPont's Booth 1523.

The ACS Rubber Division 176th Technical Meeting and Rubber Expo will take place October 13-15, 2009, in Clevland, Ohio.

DuPont Performance Elastomers , a global supplier of specialty elastomers with headquarters in Wilmington, Del., USA, is a wholly owned subsidiary of DuPont. The company is an industry leader in chloroelastomers and fluorinated elastomers, serving the automotive, chemical, petrochemical, semiconductor, food and pharmaceutical processing, construction, general rubber and wire and cable industries.

Note to Editors:

Please mention DuPont Performance Elastomers by its full name in the first reference. For all references thereafter, the company may be cited as DPE.

Viton® is a registered trademark of DuPont Performance Elastomers.
Vamac® is a registered trademark of DuPont and is brought to market by DuPont Performance Elastomers.
DuPont™ is a trademark of DuPont and its affiliates.

Nancy Harton
302-792 4347

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