Patent ID: 8465844

Claim:
An elastic attachment hot melt adhesive comprising: (1) 15 wt % to about 35 wt % of a radial block copolymer component comprising (PS-PI- PB) n X wherein PS is polystyrene, PI is polyisoprene and PB is polybutadiene, X is the residue of a multifunctional coupling agent used in the production of the radial block copolymer, and n is equal to or greater than 3 and represents the number of PS-PI-PB arms appended to X, said radial block copolymer having a styrene content of from 25 wt % to about 50wt %, said radial block copolymer has a di-block percentage of less than about 25%, based on the amount of the radial block copolymer, and the number average molecular weight of each arm of said radial block copolymer is from about 30,000 to about 95,000; (2) about 1 wt% to about 6 wt% of a linear triblock copolymer selected from the group consisting of styrene-isoprene-styrene, styrene-butadiene-styrene and styrene-isobutylene styrene; and (3) about 30 wt% to about 70 wt % of a tackifying resin; wherein the wt% is based on the weight of the adhesive composition.