Patent ID: 7723543

Claim:
A process for continuously preparing an alkylaminoacrylamide of formula (C) in which R 2 is a linear, branched, cyclic alkyl or aryl radical having 1 to 12 carbon atoms, said process comprising: reacting a compound of formula (B) R 2 NH 2 (B) in which R 2 is as defined above with an alkyl acrylate of formula (A) in which R 1 is a linear or branched alkyl radical having 3 to 10 carbon atoms in the presence of an aminolysis catalyst or an aminolysis catalyst mixture and at least one polymerization inhibitor in an apparatus for continuous reaction, wherein before entry into the reaction apparatus, the compound of formula (B) is dewatered, the reactants are fed continuously to a suitable reaction apparatus and the alcohol formed in the reaction or an alcohol/alkyl acrylate mixture is drawn off continuously with the aid of a distillation column, and the reaction mixture is conducted continuously out of the reaction apparatus into a distillation column or an evaporator, in which distillation under reduced pressure draws off overhead volatile components (A), (B) and alcohol and a very small fraction of product amide (C) which are recycled into the reaction apparatus, and the product amides (C) are drawn off from the bottom of the column together with the catalyst and the polymerization inhibitors as well as high-boiling by-products; and the bottom stream from distillation column is fed continuously to a purifying distillation.