CPC C08L 53/02 (2013.01) [C08F 2/26 (2013.01); C08F 112/08 (2013.01); C08F 136/08 (2013.01); C08K 5/005 (2013.01); C09J 7/35 (2018.01); C09J 2453/00 (2013.01); C09J 2491/00 (2013.01)] | 16 Claims |
1. A composition, comprising a styrene-isoprene-styrene triblock copolymer, wherein the triblock copolymer comprises a first polystyrene block, a polyisoprene block and a second polystyrene block, wherein
based on 100 wt % of the styrene-isoprene-styrene triblock copolymer, the first polystyrene block and the second polystyrene block are in an amount of 35-50 wt %, and the polyisoprene block is in an amount of 65-50 wt %,
a weight average molecular weight (Mw) of the styrene-isoprene-styrene triblock copolymer is 50,000-75,000, and
the styrene-isoprene-styrene triblock copolymer comprises 8-20 mol % of branched vinyl groups, wherein a melt flow index (MFI)(190° C./2.16 kg) of the composition is above 35 (g/10 min) and a toluene solution viscosity (TSV)(25%) of the composition is less than 100 cps.
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