. . "referably contain no carboxyl groups.These oligomers and polymers are known to the skilled worker, and numerous suitable compounds are available on the market.Of these oligomers and polymers c), the polyacrylates, the polyesters and/or the acrylated polyurethanes are of advantage and are therefore used with preference.Examples of particularly preferred oligomers and polymers c) for use in accordan" . .