KM4291-HSBCS is a clear, linear triblock copolymer based on styrene and ethylene/butylene with a polystyrene content of 13%. It is supplied from North America in the physical form identified below. KM4291-HSBCS - supplied as a dusted pellet KM4291-HSBCS is used as a modifier of bitumen or thermoplastics and in compound formulations. It may also find use as an ingredient in formulating adhesives, sealants and coatings.