Kraton Performance Polymers, Inc. has unveiled its new developmental polymer, Kraton G1653 polymer, is a styrene-ethylene-butylene-styrene (SEBS) block copolymer. With lower molecular weight than Kraton G1652 polymer, it still retains the high tensile strength and toughness of Kraton G1652 while offering significantly lower melt and solution viscosities. Kraton G1653 is suitable for food contact and medical applications.