The Quintac series of styrene isoprene (SIS) block polymers consists primarily of high purity isoprene monomers extracted from the C5 fraction using the GPI process (Geon Process of Isoprene), Zeon‘s unique proprietary technology. The latest decision is in response to recent growth in the adhesives market as well as Zeon‘s prospects for developing new applications by leveraging its proprietary molecular design.