Process for the production of liquid amine adducts of fluorine-containing amides

A process for the production of liquid amine adducts of fluorine-containing amides corresponding to general formula (I):

• R.sub.F --(CH.sub.2).sub.n --SO.sub.2 --NHR.sub.H.N(R.sup.1 R.sup.2 R.sup.3) (I)
• in which
• R.sub.F is a perfluoroalkyl radical containing 3 to 10 carbon atoms or a fluoroalkyl radical containing 3 to 10 carbon atoms,
• n in an integer of 0 to 6,
• R.sub.H is a hydrogen atom or a linear alkyl radical containing 1 to 4 carbon atoms,
• R.sup.1, R.sup.2 and R.sup.3 independently of one another represent a linear alkyl radical containing 1 to 4 carbon atoms,
• characterized in that a fluorine-containing sulfonic acid halide corresponding to general formula (II):
• R.sub.F --(CH.sub.2).sub.n --SO.sub.2 --X (II)
• in which
• R.sub.F and n are as defined above and
• X is a halogen atom,
• a tertiary amine N(R.sup.1 R.sup.2 R.sup.3), where R.sup.1, R.sup.2 and R.sup.3 are as defined above, and ammonia or a primary amine H.sub.2 NR.sub.H, where R.sub.H is as defined above, are reacted simultaneously with one another and the product obtained is freed from ammonium halides precipitated by filtration under a pressure of 1 to 6 bar and at a temperature of 20.degree. to 120.degree. C.