After years of working with polyethylene and polystyrene, Nova Chemicals Corp. has decided to put the two together.
Pittsburgh-based Nova has created a PE/PS blend that combines the easy processing of PS with the strength and abrasion resistance of PE, said Michel Berghmans, Nova's styrenics research and development manager.
The PE/PS product was commercialized in mid-2007 at a Nova plant in Monaca, Pa. A single grade is available, but more can be added if sales ramp up, Berghmans said at Flexpo.
The material is being priced and marketed as an additive for use with resins such as low and linear low density PE. Applications include foam, injection molded parts and film.
In foams, Nova's PE/PS can improve stiffness and dimensional stability and offer cost savings through lower material consumption, the firm said. It also can be painted and recycled.
Nova's PE/PS is different from an ethylene-styrene copolymer made previously by Dow Chemical Co., Berghmans added. Compared with the Dow product, the Nova material is ``more of a standard blend'' and is made through reactor polymerization, he said.