Patent ID: 7176254

Claim:
Sizing composition comprising: 1) water-dispersible and/or water-soluble, aralkylamine-blocked polyisocyanates, which have been synthesized from A) from 20 to 80% by weight of at least one polyisocyanates containing aliphatically, cycloaliphatically, araliphatically and/or aromatically attached isocyanate groups, B) from 1 to 40% by weight of at least one ionic and/or potential ionic and/or nonionic compound, C) from 15 to 60% by weight of at least one blocking agent of which at least 20% by weight consists of aralkylamines, D) one or more (cyclo)aliphatic monoamines and/or polyamines having from 1 to 4 amino groups, from the molecular weight range up to 300, present in an amount up to 15% by weight, E) one or more polyhydric alcohols having from 1 to 4 hydroxyl groups, from the molecular weight range up to 250, present in an amount up to 15% by weight, F) from 0 to 15% by weight of a stabilizer or stabilizer mixture, and G) from 0 to 20% by weight of at least one solvent, wherein the sum of A) to G) adds up to 100% by weight, 2) film-forming resins, 3) coupling agents, and 4) lubricants.