MIDLAND, MICH. - Dow Chemical Co. is looking at a wide number of applications for a new family of plastic resins that can be made only through metallocene catalyst technology. In a paper to be delivered at Specialty Polyolefins '96 sponsored by Schotland Business Research Inc., Steve Hoenig, de-velopment leader for Dow's ethylene/styrene interpolymer products, will provide details on the applications. The event will be in Houston, Sept. 25-27.
Midland-based Dow has produced sample quantities of the ESI products containing 30-80 percent styrene, Hoenig said. The samples were made in a solution process using metallocene catalyst technology, he said.
The interpolymers demonstrate a range of features and characteristics dependent on proportions of styrene and ethylene used, Hoenig said. Interpoly-mers with larger amounts of sty-rene have semi-glassy characteristics, those with equal amounts of styrene and ethylene have elastomeric characteristics, and those with more ethylene have semi-crystalline characteristics.
Hoenig said Dow is looking at packaging, durable goods, wire and cable coatings, toys, and automotive applications. Dow also is exploring elastomeric gasket and profiles and a variety of general elastomer applications.
He said the products have been blown and cast into film, injection molded, extruded into profile shapes, calendered, emulsified and foamed. Also, he said they have been compounded and formulated with other polymers, fillers, modifiers and additives.
``Molders, formulators and end users of ESI are working with properties and combinations of properties never seen before in a plastic,'' Hoenig said.
Those include elastomeric features that do not require modification, resin compatibility and good low-temperature performance.