A new TPU from Sartomer Co. Inc, Exton, Pa., is reportedly the first to be made from hydroxyl-terminated polybutadiene. Poly bd 2035 and three other related TPU grades have a novel multiblock structure and a polybutadiene backbone that gives greater resistance to strong acids and bases than standard TPUs. The new resins also offer barrier to oxygen and moisture plus unusual electrical properties: Volume resistivity is 1014 ohm-cm and surface resistivity is 1.5 x 1016 ohm/sq. Uses include films, adhesives, and sealants that require resistance to aggressive media or long-term exposure to humidity. These TPUs can also act as modifiers for polyolefins and engineering resins or as tie layers between non-polar materials such as rubber and polar substrates such as PUR. Grades for injection and extrusion have hardnesses from 70 to 90 Shore A.
Sartomer Company, Inc.
Oaklands Corporate Center
502 Thomas Jones Way Exton, PA 19341
Phone (800) 345-8247 Fax