Perfluoroalkylurethanes, process for their preparation and their use as dirt-repellent agents

摘要

Perfluoroalkylurethanes of the general formula (1) <IMAGE> in which RF denotes perfluoroalkyl or perfluoroalkoxyperfluoroalkyl each having altogether 2-20, preferably 4-14, C atoms, R denotes the radical of a lower aliphatic polyol compound having 2-6 C atoms, n denotes a number from 1.1 to 1.5, m denotes a number equal to 2-n and o denotes an integer from 1 to 6, preferably 1 to 4. These compounds are used for the oil- and water-repellent finishing of textile material.