Patent ID: 8487026

Claim:
A hot melt adhesive for adhesively bonding fibrous materials to one another or to smooth substrate surfaces, comprising at least one polyolefin prepared by polymerization in the presence of metallocene as catalyst and has a ring/ball softening point in the range from 50 to 165° C. and a melt viscosity measured at a temperature of 170° C. in the range from 100 to 20,000 mPa·s, wherein the at least one polyolefin is a copolymer of propylene with at least one or more further monomers selected from the group consisting of ethylene and linear or branched 1-olefins having from 4 to 20 carbon atoms, with the content of structural units derived from propylene being from 70 to 99.9% by weight and wherein the hot melt adhesive is free of plasticators, plasticizers or both.