US 11,965,086 B2
Styrene-isoprene-styrene triblock copolymer and method for manufacturing the same, composition and adhesive composition thereof
Chun-Hung Wang, Kaohsiung (TW); and Ging-Ming Wang, Kaohsiung (TW)
Assigned to LCY CHEMICAL CORP., Kaohsiung (TW)
Filed by LCY CHEMICAL CORP., Kaohsiung (TW)
Filed on Oct. 23, 2020, as Appl. No. 17/079,032.
Claims priority of application No. 202010248735.1 (CN), filed on Apr. 1, 2020.
Prior Publication US 2021/0317298 A1, Oct. 14, 2021
Int. Cl. C08L 53/02 (2006.01); C08F 2/26 (2006.01); C08F 112/08 (2006.01); C08F 136/08 (2006.01); C08K 5/00 (2006.01); C09J 7/35 (2018.01)
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
OG exemplary drawing
 
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.