Compounds for impregnating fibrous materials and method for their production

Claim 1

A COMPOSITION SATISFACTORY FOR IMPREGNANTING FIBROUS MATERIALS TO IMPART WATER-REPELLENT PROPERTIES THERETO WHICH COMPRISES THE PRODUCT RESULTING FROM THE SEQUENTIAL STEPS OF HEATING, AT A TEMPERATURE ABOVE APPROXIMATELY 300*C, AND BELOW APPROXIMATELY 350*C., A MATERIAL SELECTED FROM THE GROUP CONSISTING OF AMIDES OF FATTY ACIDS CONTAINING 12-30 CARBON ATOMS, MIXTURES OF FATTY ACIDS CONTAINING 12-30 CARBON ATOMS WITH NITRILES OF FATTY ACIDS CONTAINING THE SAME NUMBER OF CARBON ATOMS AS SAID FATTY ACIDS, AND MIXTURES OF FATTY ACIDS CONTAINING 12-30 CARBON ATOMS WITH AMIDES OF FATTY ACIDES CONTAINING THE SAME NUMBER OF CARBON ATOMS AS SAID FATTY ACIDS, SAID HEATING BEING CONTINUED UNTIL THE ACID NUMBER OF SAID HEATED MATERIAL IS BELOW APPROXIMATELY 16.1, THEREAFTER CHLOROMETHYLATING SAID PRODUCT OF SAID HEATING AND THEREAFTER REACTING THE RESULTING CHLOROMETHYLATED PRODUCT WITH A TERTIARY AMINE.