New acetals make the automative grade

Six new grades of Delrin acetal from DuPont (Wilmington, DE) are said to meet needs for lower volatile emissions, weathering resistance, and reduced wear and friction in gear applications. ?This year marks the 50th anniversary of Delrin, and our new grades underscore the ongoing commitment to adapt and improve the world?s first acetal resin to satisfy evolving customer requirements,? says George Hesser, Delrin marketing manager for the Americas.

DuPont developed the new grades in part to help automotive manufacturers that are pressing demands for materials with extremely low volatile release, particularly for parts installed in vehicle interiors and doors. Three new grades are now available for this requirement, and more are under development.

According to DuPont, Delrin 100PE is a high-viscosity resin with the best combination of stiffness, toughness, and creep resistance. Delrin 500PE is a general-purpose, medium-viscosity resin with an optimum combination of flow and physical properties, and Delrin 527 UVE is a medium-viscosity resin with excellent weathering resistance and an optimum combination of flow and physical properties.

Volatile emissions from the new grades are up to 90% lower than those from corresponding standard grades of Delrin. Formaldehyde emissions fall below 1.0 part per million when tested by DuPont using typical test procedures from automotive companies.

Delrin 327UV has been developed to provide a combination of enhanced weathering and molding productivity. For gear applications, Delrin 100TL combines outstanding impact strength and elongation with very low wear and friction, while Delrin 500MP acetal is an economical material choice for parts requiring low wear, friction, and squeak. Its stiffness, strength, and toughness are similar to those of standard medium-viscosity acetals.?MM

DuPont
(302) 999-4592
http://plastics.dupont.com