Claiming it's “the next milestone in the plastics industry,” Dow Plastics recently introduced INDEX interpolymers, a new thermoplastic polymer based on the copolymerization of ethylene and styrene. The latter two were previously incompatible using standard Ziegler-Natta catalysts. Ed Gambrell, a Dow Chemical Co. vice president, says the plastics industry has struggled for 20 years to combine ethylene and styrene. Dow is producing limited quantities of INDEX at a pilot plant in Freeport, ...

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