Santoprene® TPV 121-70B230

Santoprene TPV 121-70B230 is a soft, black thermoplastic vulcanizate (TPV) in the thermoplastic elastomer (TPE) family. This material is specially formulated to bond to sulfur or peroxide-cured thermoset EPDM rubber for corner molding, end caps and special fixation applications, and for COF enhancement. This grade of Santoprene® TPV is shear-dependent and can be processed on conventional thermoplastics equipment for injection molding. It is polyolefin based and recyclable within the manufacturing stream.

Key Features:

• Specially formulated to replace thermoset EPDM rubber in automotive glass run channel corner molding applications
• Designed for shorter processing time compared to thermoset EPDM rubber
• Adheres to vulcanized EPDM rubber over a wide range of temperatures
• Adheres to TPV over a wide range of temperatures
• Enhanced COF properties
• Good UV resistance
• Low fogging
• Paint stain resistant

Processing Form:

• Injection Molding
• Multi Injection Molding

Processing Notes:
Desiccant drying for 3 hours at 80°C (180°F) is recommended. Santoprene TPV has a wide temperature processing window from 175 to 230°C (350 to 450°F) and is incompatible with acetal and PVC.

Santoprene TPV has a relatively high melt viscosity at low shear rates. Viscosity decreases as the shear rate increases. Increasing temperature has little effect on TPV melt viscosity. Smaller gates and higher shear rates keep melt viscosity low and improve melt flow. Please also refer to the injection molding guide.