Patent ID: 8389647

Claim:
A laminating adhesive composition comprising a reaction product which contains isocyanate groups and is obtained from the reaction of a) at least one crystalline polyester polyol P1 which is solid at room temperature and has a number average molecular weight (Mn) of between 1500 and 9000 g/mol and a softening point of more than 100° C. and has an OH number of 10-50 mg KOH/g, and b) at least one polyester polyol P2 which is solid at room temperature and has a number average molecular weight (Mn) of 10000 to 50000 g/mol and a softening point of more than 130° C. and has an OH number of 1-10 mg KOH/g, and c) P3 comprising at least a first polyester polyol that is different than polyol P1 and polyol P2, wherein the at least first polyester polyol of P3 is a liquid at room temperature; with d) at least one polyisocyanate P, the polyisocyanate P being used in a stoichiometric excess in relation to the polyols P1 and P2 and P3, and wherein a weight sum of (i) all of the at least one crystalline polyester polyol P1 and (ii) all of the at least one polyester polyol P2 is greater than the weight sum of all of P3 included in the laminating adhesive.