Patent ID: 11965086
Assignee: LCY CHEMICAL CORP.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 1:
2. 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), a styrene isoprene diblock copolymer in the composition is less than 1 wt % and a toluene solution viscosity (TSV) (25%) of the composition is less than 100 cps.