Two new fluoroelastomer processing aids for polyolefins are said to eliminate melt fracture, reduce extrusion pressure, amperage, torque, and die build-up. They are aimed particularly at extrusion where moderate mixing is involved, such as solution-process LLDPE, blown film of 1 to 3 MI LLDPE, and extrusion under low-shear conditions. They are also effective in masterbatches containing more than 2% process aid. Viton Freeflow Z110 and Z210 from DuPont Elastomers, Wilmington, Del., are being unveiled at this month’s K 2007 show in Dusseldorf. The new additives complement Z100 and Z200, introduced in late 2002. Z-Series products are based on a rheology-modified fluoroelastomer plus an interfacial agent. They boast less interaction with other additives that can reduce effectiveness, as well as lower risk of thermal degradation and odor or yellowing. The Z Series is said to be especially effective with more “challenging” polyolefins. Despite higher upfront cost than other process aids, they reportedly can provide double-digit cost savings. Tel: (302) 792-4200 • www.dupontelastomers.com
DuPont Performance Elastomers
300 Bellevue Parkway Wilmington, DE 19809
Phone (302) 792-4200 Fax (302) 792-4385
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