Process for the preparation of ureidoperoxycarboxylic acids

Details Process for the preparation of ureidoperoxycarboxylic acids Process for the preparation of ureidoperoxycarboxylic acids

C - Chemistry, Metallurgy

07

C

C07C 409/40 (2006.01) A01N 47/28 (2006.01) A01N 47/30 (2006.01) A01N 47/32 (2006.01) A61L 2/16 (2006.01) C11D 3/39 (2006.01) C11D 3/395 (2006.01)

Patent

CA 2055701

HOE 90/F 347 Abstract: Process for the preparation of ureidoperoxycarboxylic acids. A process for the preparation of ureidoperoxycarboxylic acids of the formula Image , in which x is the number 1 or 2, A, if x is 1, is hydrogen, C1-C20-alkyl, aryl, preferably phenyl, or haloaryl, preferably chlorophenyl, or if x is 2, is C1-C20-alkylene or arylene, preferably phenylene, B is a group of the formula Image , Image , Image , Image or Image , in which n is a number from 1 to 20, m is the number 0, 1 or 2, R1 is C1-C20-alkyl and R2 is in each case hydrogen or C1-C20-alkyl, which comprises dissolving carbamoyllactams of the formula Image , in which x, A and B have the abovementioned mean- ings, in a one- to six-fold, preferably a one- to three-fold, amount by weight of a strong catalyst acid, by then adding water in a one- to ten-fold molar excess, relative to the carbamoyllactam, to the solution of the carbamoyllactam in the catalyst acid and by heating the reaction mixture to form the ureidocarboxylic acid, by then adding to the reaction mixture an aqueous hydrogen peroxide solution in a one- to ten-fold, preferably a two- to four fold, molar excess per oxidizable carboxyl group of the ureidocarboxylic acid formed in the preceding reaction step, and by then precipitating the resulting ureidoperoxycarboxylic acid from the reaction mixture. These compounds are suitable as bleaches, oxidants and disinfectants.

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