New Metallocene TPE New Metallocene TPE

A new series of propylene-based TP elastomers is expected to find use in a wide variety of applications, though their initial target is as modifiers for polyolefins and other resins in automotive and electrical appliance parts as well as food packaging.

A new series of propylene-based TP elastomers is expected to find use in a wide variety of applications, though their initial target is as modifiers for polyolefins and other resins in automotive and electrical appliance parts as well as food packaging. The Tafmer XM Series from Japan’s Mitsui Chemicals (represented here by Mitsui Plastics, Inc., White Plains, N.Y.), is produced with the company’s proprietary metallocene catalyst technology. Commercial production of the new soft materials started last month.


XM-series elastomers boast higher performance than Tafmer resin modifiers produced with Ziegler catalysts. For example, when blended with PP for the heat-seal layer of PP films, XM elastomers have been shown to allow sealing at 20° C (36° F) lower temperature than previous Tafmer grades. Their excellent antiblocking properties are said to prevent film from sticking together during storage and transportation.