Kraton G-1650M Copolymer based on styrene and ethylene/butylene 66070-58-4 Kraton Polymers Styrene Insoluble in water KRATONTM G1650M is a clear, linear triblock copolymer based on styrene and ethylene/butylene, with a polystyrene content of 30%. KRATON G1650M is used as a modifier of bitumen and polymers. It is also suitable as an ingredient in formulating compounds for footwear applications and may be used in formulating adhesives, sealants and coatings. Clear, linear triblock copolymer based on styrene and ethylene/butylene. Used in formulating coatings.