TPV uses acrylate rubber. (Keeping up with Materials).

A new thermoplastic vulcanizate (TPV) elastomer from Zeon Chemicals L.P. of Louisville, Ky., is based on Zeon's vulcanized HyTemp polyacrylate rubber, which confers high heat and chemical resistance. The new Zeotherm TPVs are based on compounding technology licensed exclusively by Zeon from TPV supplier Advanced Elastomer Systems, L.P. (AES) of Akron, Ohio.

Prototype Zeotherm TPVs reportedly show excellent retention of physical properties at 150 C after 1500 hr of continuous exposure to automotive oils transmission fluids, and greases, while maintaining a low hardness range of 70 to 90 Shore A. Zeotherm can be processed by extrusion, injection molding, and blow molding. Applications include automotive shaft and bearing seals, transmission seal components, CVJ boots, and air ducts. Initial grades will be based' on acrylate rubber dispersed in nylon and/or TP polyester matrixes. Zeon plans to develop future grades based on Zetpol HTNBR (hydrogenated nitrile rubber) and Hydrin ECO (epichloro-hydrin) elastomers. Zeon has sampled limited quantities of Zeotherm to select customers in North and South America, Europe, and Asia and will launch it commercially next month. Tel [phone], www.zeonchemicals.com