Robert Grace, Plastics News editor and associate publisher, gathered the following items at Plastimagen, held April 27-30 in Mexico City.
Crompton markets variety of products
Crompton Corp. promoted various vinyl stabilizers and fiberglass curing agents.
Its Mark 9300 series stabilizers aim to reduce volatile organic compound emissions by reducing phenol content in PVC by 75 percent, said Jon Amdursky, a marketing communications manager at the Middlebury, Conn., chemical company. Applications include vinyl flooring, wall coverings and furnishings.
Crompton's Mark 2910 stabilizers contain a built-in lubricant for use in PVC pipe, eliminating the need for compounding in a wax lubricant.
Its Mark 2289 stabilizer is targeted for use in vinyl windows, doors and siding in hot, sunny climates. It protects against heat and ultraviolet rays, which can cause discoloration and warping.
Meantime, Crompton has introduced a pair of organic peroxide curing agents for fiberglass processing of such products as boat hulls and spas.
The additives - Hi-Point 90 Redout and Hi-Point 90 Blue - contain red and blue dyes, respectively, that cast a hue in the compound that disappears once it is fully cured.
Noveon alloy blends TPUs with polyolefin
Brecksville, Ohio-based Noveon Inc. has developed an alloy that allows the blending of thermoplastic urethanes with an undisclosed polyolefin - two previously incompatible materials.
Compared with Noveon's Estane-brand TPU, the resulting compound offers a lower density and coefficient of friction, as well as matte finish, said Kenneth Kim, Noveon's Latin America business manager.
Kim said the new alloy also offers better abrasion and tear resistance than straight polyolefins.
The slippery feel of the compound makes it suitable for industrial applications such as sliding spiral tubes used for materials handling. The material also can be used as a tie layer between a PE substrate and a straight thermoplastic PU.
In the past month, Noveon has introduced five grades of the alloy, which Kim said can be processed as cast film, blown film, extruded tubing or a fabric coating. He said the suitability for blown film came as a surprise.
Typically, Kim said, a compounder would have to add a wax lubricant to a TPU to reduce its coefficient of friction, and it still could not come close to the slipperiness of the new compound. He expects the alloy to be priced comparably with Estane, but its lower density lowers the new compound's per-pound price.