Solprene 303 Random-block styrene-butadiene copolymer Dynasol Styrene block copolymer (SBC) >> Styrene butadiene styrene rubber, SBS ADHESIVE >> Hot-melt >> Pressure sensitive (HMPSA) Solprene 303 is a linear random-block styrene-butadiene copolymer with 46% styrene content, 11% present as a polystyrene block S-303 is used in vulcanized microcellular shoe soles, it provides hardness and can be highly filled, it can be blended with other rubbers to reduce die swell and increase processability in extruded and molded goods. These adhesives are used in products such as masking tape, cellophane tape, insulating tape, tapes for sealing and binding, decorative contact paper and labels. Some recent applications are used for installing tiles and other heavy objects. Pressure-sensitive adhesives may be used on cloth, paper, films and sheet metal. The latter two are normally covered with a thin layer of fixative to improve the bonding of the adhesive. Formulations which only use natural rubber tend to soften over time, while those using SBRs become hard as a result of oxidization. Linear random-block styrene-butadiene copolymer. Used in pressure-sensitive adhesives. Provides hardness and can be highly filled. Can be blended with other rubbers to reduce die swell and increase processability in extruded and molded goods. Offers adhesion to cloth, paper, films and sheet metal for PSA. Applications: pressure sensitive adhesives (masking tape, cellophane tape, insulating tape, tapes for sealing and binding, decorative contact paper and labels).