A new styrenic block copolymer from Kraton Polymers, Houston, reportedly offers reduced compression set and improved stress relaxation at temperatures above 70 C (158 F). Molecular weight of Kraton G1633 is 50% higher than that of standard SBCs and its compression-set value approaches that of some olefinic TPVs. Kraton says compression set is further optimized when G1633 is used with certain polyolefin blends such as a combination of PP and HDPE. Uses include automotive grommets and weather seals and medical stoppers and plunger tips. (800) 457-2866 • www.kraton.com
15710 John F. Kennedy Blvd. Houston, TX 77032-2348
Phone (832) 204-5400 Fax (832) 204-5460
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