HOT MELT ADHESIVES

摘要

This invention relates to crystalline, isocyanate group-containing hot melt adhesives based on from 70 - 95% by weight of a prepolymer A based on polyester diols having a molecular weight of from 1500 to 10,000 and melting points of from 50 to 90.degree.C and diisocyanates in a ratio of isocyanate groups of the diisocyanate to the hydroxyl groups of the polyester diol of from 3:1 to 1.2:1 and from 5 - 30% by weight of a component B having a molecular weight of from 1000 to 10,000 based on polyesters having melting points of from 60 to 150.degree.C, in which component B contains at most 0.5 Zerewitinow active groups per molecule.