Patent ID: 7307124

Claim:
A hot-melt adhesive composition used in non-woven assemblies, comprising (a) 100 parts by weight of a block copolymer of the formula [S-(I/B)] n X, wherein S represents a predominantly poly(styrene) block and (I/B) represents a polymer block obtained by a random copolymerization of a mixture of predominantly isoprene and butadiene in a weight ratio in the range of from 70:30 to 30:70, wherein n is an integer in the range of from 3 to 5, and wherein X is the remainder of a coupling agent, wherein the block copolymer has a poly(styrene) content of from 28 to 50 wt % and a coupling efficiency of from 50 to 100%, and a melt flow index measured at 200° C./5 kg ranging from 1.0 to 12 g/10 min, (b) from 250 to 300 parts by weight of a tackifying resin, (c) from 50 to 150 parts by weight of a plasticizer, and (d) from 0 to 3 parts by weight of one or more stabilizers and/or antioxidants.