Two new Santoprene thermoplastic vulcanizates (TPVs) from ExxonMobil Chemical are claimed to provide a more harmonized appearance in automotive weatherseal applications by more closely resembling other elastomer materials with which they are used. These materials come from ExxonMobil's Santoprene Specialty Products unit (formerly Advanced Elastomer Systems), Akron, Ohio. The first is a new bonding grade that adheres to extruded TPEs and EPDM rubber profiles for glass-run channel corner moldings. It boasts good melt flow to produce glossy, smooth finishes and a lower coefficient of friction (0.2) than other TPVs or EPDM. The material eliminates the need for a secondary coating. Available in 70 or 80 Shore A hardness, the material can also be used for end caps and special fixation applications. Also new is a series of Santoprene molding grades that can be matched to other TPV or rubber parts in weatherseal applications. By changing the finish of the tool, the appearance of the part can be adjusted to a glossy, shiny, or matte look.
ExxonMobil Chemical Co., Santoprene Specialty Products
388 South Main St. Akron, OH 44311-1059
Phone (330) 849-5000 Fax (330) 849-5599