Production of chlorocyanuric acid
AssigneeMonsanto Company
InventorsGeorge D. Nelson, Kenneth J. Nissing, William F. Symes
Life of this patent
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Abstract
Chlorocyanuric acid of increased particle size is obtained by reacting cyanuric acid, alkali metal hydroxide and chlorine in an aqueous reaction mixture in the presence of a promoter selected from the group consisting of polyoxyethylene, polyoxypropylene and polyoxyethylene-polyoxypropylene copolymers.
Claims8
In a process for preparing a chlorocyanuric acid selected from the group consisting of dichlorocyanuric acid, trichlorocyanuric acid and mixtures thereof by the reaction of cyanuric acid with alkali metal hydroxide and chlorine in an aqueous reaction mixture and recovering the acid product from said reaction mixture, the improvement which comprises conducting the reaction in the presence of a promoter selected from the group consisting of polyoxyethylene, polyoxypropylene, and polyoxyethylene-polyoxypropylene copolymers.
In a process for preparing trichlorocyanuric acid by the reaction of cyanuric acid with sodium hydroxide and chlorine in an aqueous reaction mixture and recovering the acid product from said reaction mixture, the improvement which comprises conducting the reaction in the presence of from about 100 to about 300 ppm by weight of a polyoxyethylene-polyoxypropylene copolymer, based upon the reactor contents.
In a process for preparing a chlorocyanuric acid selected from the group consisting of dichlorocyanuric acid, trichlorocyanuric acid and mixtures thereof by the reaction of cyanuric acid with alkali metal hydroxide and chlorine in an aqueous reaction mixture, the improvement which comprises conducting the reaction in the presence of a nonylphenol-ethylene oxide condensate.
Dependencies are inferred from the claim text.