Patent ID: 6683216
Filing Date: 2004-01-27
Classification: C07C

Abstract:
Continuous process for the preparation of amines which comprises the steps of:I. continuously feeding a carboxamide reactant, an aqueous alkaline hypohalite reactant, and an aqueous alkaline hydroxide reactant to a first reaction zone wherein the carboxamide, hypohalite, and hydroxide react to form a first reaction mixture comprising a plurality of components wherein at least one of the components is an N-halo-carboxamide; II. continuously removing the first reaction mixture from the first reaction zone; III. measuring the concentration of at least one component of the first reaction mixture and using the result of that measurement to control the feed rate of at least one of the reactants of step I to achieve at least 90% conversion of the carboxamide in the first reaction zone; and IV. continuously feeding the first reaction mixture to a second reaction zone wherein the first reaction mixture further reacts to form a second reaction mixture comprising an aqueous solution of an amine.