Patent ID: 6846874

Claim:
A hot-melt adhesive composition comprising: 20 to 80% by weight, based on the total composition, of a blend comprising: 50 to 100% by weight, based on the blend, of a component (A) comprising a polyamide graft copolymer having a polyolefin backbone and at least one polyamide graft, and 0 to 50% by weight, based on the blend, of at least one polymer (B) selected from polyolefin and polyamide polymers; and 80 to 20% by weight, based on the total composition, of at least one tackifying resin, which is optionally blended with at least one wax, plasticizer or mineral filler; wherein: the polyamide graft in component (A) is attached to the polyolefin backbone via residues of an unsaturated monomer, (X), selected from unsaturated carboxylic acids, anhydrides of unsaturated carboxylic acids and unsaturated epoxides; the residues of the unsaturated monomer, (X), are attached to the backbone by grafting or copolymerization from the unsaturated bond; the molar mass, M n , of the polyamide graft is between 1000 and 5000; the melting point of the polyamide graft is between 100 and 190° C.; and the MFI of component (A) is between 1 and 500 g/10 mm at 190° C. under a load of 2.16 kg.