Solprene 4580X is a linear multiblock copolymer of styrene and butadiene with high vinyl (>25%), having 45% of styrene content, most of this one appears like block polystyrene, which gives the polymer a thermoplastic behavior. It has a non staining antioxidant system FDA approved for use in food contact applications and is essentially gel free with a very clear color. S-4580X is used in formulations of adhesive and like modifier of impact for plastics. The product is at development stage and commercial sample are available upon request. It is available in bales wrapped in rubber modified polystyrene film soluble in styrene monomer.Information provided by Dynasol.