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Vamac® Products Meet Market Need for Cost-Effective Materials that Improve Component Performance


Düsseldorf, October 24, 2007

New DuPont™ Vamac® Products Extend Performance, Processibility

DuPont Packaging & Industrial Products launches DuPont™ Vamac® Ultra ethylene acrylic elastomers, a new family of higher performance elastomers that greatly enhances the performance AND processibility of the standard grades of heat and oil-resistant Vamac® ethylene acrylic elastomers.

Based on a proprietary manufacturing process that optimizes the molecular structure of Vamac®, the new Vamac® Ultra series comprises several new product grades with enhanced properties that extend the performance of existing Vamac® grades in several directions.

"This breakthrough in the product's foundation results from several years of R&D efforts aimed at meeting marketplace request for a new generation of Vamac® grades that significantly improve customer processing limitations while providing higher levels of performance," said Doug King, DuPont™ Vamac® global product line manager. "Early tests with customers in the development phase indicate that the products from this process exceed their expectations."

The first new product in the portfolio - Vamac® Ultra IP - can vastly improve a users' productivity through reduced mold fouling, scrap, improved hot tear resistance and cycle time compared with core Vamac® G product. With higher viscosity, Ultra IP provides superior compound dispersion with a 1-pass mix and extruded profile stability. At the same time Vamac® Ultra IP delivers improved high temperature properties for improved vacuum collapse resistance and tensile strength of low hardness compounds with improved heat/oil aging performance for today's hotter, more aggressive operating environments.

Vamac® Ultra LT CVJ boot

The new product family also debuts with Vamac® Ultra LT, designed to help automakers meet new and emerging needs for cost-effective, lower-emission powertrain systems, according to Ulrich Hevelke, DuPont™ Vamac® Ultra LT project leader. Vamac® Ultra LT delivers low temperature flexibility down to -40C and lower in service with fewer performance-draining plasticizers, especially for use in automotive hoses and boots as well as dampers where functional performance is required throughout a thermal range as wide as -40C to 160C. Ultra LT can also be blended with other Vamac® ethylene acrylic elastomers to improve low temperature performance in place of plasticizers in static applications such as powertrain seals & gaskets.

Both products are available immediately for application development. For additional information about new and existing Vamac® products, visit

DuPont™ Vamac® ethylene acrylic elastomer (AEM) products are a comprehensive family of heat and fluid resistant elastomers for flexible applications ranging from hoses, dampers and boots to seals and gaskets. Vamac® provides significant performance advantages over low temperature ACM and HNBR grades, including better low temperature resistance and peak temperature performance up to 200 C. Compared to HNBR substantial cost savings can be achieved. Combined with DuPont development experts and global R&D resources, this portfolio can help customers meet increasingly demanding engineering specifications under the hood, at extremes, over time and on budget.

The DuPont Engineering Polymers business manufactures and sells Crastin® PBT and Rynite® PET thermoplastic polyester resins, Delrin® acetal resins, Hytrel® thermoplastic polyester elastomers, DuPont™ ETPV engineering thermoplastic vulcanizates, Minlon® mineral reinforced nylon resins, Thermx® PCT polycyclohexylene dimethyl terephthalate, Tynex® filaments, Vespel® parts and shapes, Zenite® LCP liquid crystal polymers, Zytel® nylon resins and Zytel® HTN high-performance polyamides. These products serve global markets in the aerospace, appliance, automotive, consumer, electrical, electronic, healthcare, industrial, sporting goods and many 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.

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Automotive boots as well as dampers and hoses are initial targets for new Vamac® Ultra LT, one of the two new Vamac® Ultra products designed to improve performance and processibility.

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