A "next-generation" coupling agent for wood-plastic composites (WPCs) is said to promise signifi cantly higher efficiency than existing products. This developmental additive is due to be commercialized this year by Chemtura Corp., Middlebury, Conn., as an addition to the Polybond line of maleic anhydride-grafted PE modifiers. In recent pilot-plant trials of WPC deck boards, the new modifier was at least 50% more efficient than its predecessor, Polybond 3029. This allows processors to use less coupling agent and cut cost, according to Chemtura's WPC technical leader Bill Sigworth. Chemtura also recently commercialized a new process for making powdered Polybond modifiers as a convenience for WPC processors who preblend powdered ingredients prior to extrusion, The process does not involve grinding and thus eliminates dust. Polybond 3029 is available in a powder version, as will be all new grades. Chemtura also reports that Polybond modifiers have potential as compatibilizers for mixed scrap such as PP and nylon carpet fibers and for nanocomposites. Tel: (877) 948-2660 . www.chemtura.com
199 Benson Rd Middlebury, CT 06749
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