Patent ID: 7223816
Filing Date: 2007-05-29
Classification: C08F,C08L,C09D,C09J

Abstract:
1. A hot melt adhesive suitable for bonding a polar leather layer to a non-polar substrate, comprising: (a) a block copolymer having at least one A block and at least one B block, wherein: (b) a hydrogenated hydrocarbon tackifying resin, with a softening point lower than 140° C. in a weight proportion of 30 to 150 parts by weight of tackifying resin per 100 parts per weight of block copolymer; (c) a resin which is compatible with the mono alkenyl arene blocks, having a softening point lower than 140° C., in a weight proportion of from 10 to 80 parts by weight of resin per 100 parts by weight of block copolymer; (d) optionally a melt flow improving poly(alkylene) resin, which is functionalized, in a weight proportion of from 0 to 30 parts by weight per 100 parts by weight of block copolymer, and (e) stabilizers and/or additional auxiliaries in a weight proportion of from 0.1 to 1 part by weight per 100 parts by weight of block copolymer.