Patent ID: 8658724

Claim:
A solution comprising a terpolymer formed from the monomers of components A, B and C, the total amount of which adds up to 100% by weight, a) 20 to 30% by weight of lactams as component A, b) 20 to 27.5% by weight of equimolar amounts of adipic acid and one or more aliphatic diamines as component B, c) 45 to 55% by weight of equimolar amounts of adipic acid and 4,4′-diaminodicyclohexylmethane (dicycan) as component C, in an aromatics-free solvent system comprising 50 to 100% by weight of C 1-4 -alkanol, 0 to 50% by weight of water and not more than 10% by weight of further aromatics-free solvents, where the total amount of the solvent system adds up to 100% by weight.