Kuraray SEPTON HG-252 Hydroxyl-Terminated SEEPS Thermoplastic Elastomer Polar Resin Modifier Compatibilizer Adhesive Tackifying Component

Full Name & Product Positioning Full Product Name: Kuraray SEPTON HG-252 Hydroxyl-Terminated Styrene-Ethylene-Ethylene-Propylene-Styrene (SEEPS-OH) Thermoplastic Elastomer SEPTON™ HG-252 is a SEEPS-type thermoplastic elastomer developed by Kuraray, featuring a hydroxyl functional group at one chain end. The hydroxyl end group enables its use as a modifier for polar resins and as a compatibilizer in polar/non-polar resin blend systems. With a styrene content of 28 wt% and a melt flow rate of 26 g/10min, it offers processability and elastomeric properties suitable for adhesives, sealants, and polymer blend modification applications. Core Technical Parameters Parameter Typical Value Product Type SEEPS-OH (Hydroxyl-terminated hydrogenated styrenic block copolymer) Styrene Content 28 wt% MFR (230°C, 2.16kg) 26 g/10min Hardness (Type A) 70 Physical Form Pellet Functional Group Hydroxyl (-OH) at one chain end Standard Packaging 25kg/bag Key Advantages (Performance based on measured conditions from original manufacturer TDS. Actual results vary with formulations and do not guarantee end-use performance.) 1.  Hydroxyl functional group at one chain end enables interaction with polar resins, serving as a polar resin modification component; 2.  Functions as a compatibilizer in polar/non-polar resin blend systems, helping to improve interfacial bonding; 3.  SEEPS hydrogenated structure provides corresponding weatherability, heat resistance, and elastic recovery properties; 4.  Melt flow rate of 26 g/10min supports processability, suitable for both hot-melt and solvent-based processing methods; 5.  Pellet form allows smooth feeding and convenient mixing/dispersion with other resin components. Main Application Areas Core Applications:  Polar resin modifier, polar/non-polar resin compatibilizer, toughening component for adhesives and sealants Compatible Applications:  Polymer blend modification, hot-melt adhesives, elastomer composites, automotive interior parts, soft-touch products Not Recommended For:  Direct food-contact articles, medical implant-grade materials, high-purity electronic-grade applications (requires separate validation)