Styrene-isoprene-styrene block copolymer composition for low...

Details Styrene-isoprene-styrene block copolymer composition for low... Styrene-isoprene-styrene block copolymer composition for low...

C - Chemistry, Metallurgy

08

F

400/2043, 400/30

C08F 293/00 (2006.01) C08F 297/04 (2006.01) C09J 153/02 (2006.01)

Patent

CA 2040113

T 4761 02 A B S T R A C T STYRENE-ISOPRENE-STYRENE BLOCK COPOLYMER COMPOSITION FOR LOW VISCOSITY LOW APPLICATION TEMPERATURE HOT MELT ADHESIVES A low viscosity low application temperature hot melt adhesive which contains a predominantly branched styrene-isoprene-styrene block copolymer composition comprised of linear polymeric blocks wherein the polystyrene block molecular weight is greater than 12,000, the polystyrene content is 35% or less by weight of the block copolymer composition and the molecular weight of the block copolymer composition and the coupling efficiency are chosen so that the melt viscosity of the adhesive made with the composition is less than 3100 cps. DO9/T476lFF2

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