# US 2016/0157494 A1 · Methods for the Direct Electrolytic Production of Stable, High Concentration Aqueous Halosulfamate or Halosulfonamide Solutions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0157494 A1 - Document ID: US20160157494A1 - Status: Published application - Kind: A1 - Application number: 14/964,504 - Filed: 2015-12-09 - Published: 2016-06-09 - Earliest claimed: 2014-12-09 - Assignees: MIOX Corporation - Applicants: MIOX Corporation - Inventors: Andrew K. Boal - Web page: https://patentgrep.com/patent/US20160157494A1 ## CPC - A01N 59/02: Sulfur; Selenium; Tellurium; Compounds thereof - A01N 59/00: Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds - A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS ## Abstract Methods and apparatuses for the direct electrochemical generation of high concentration, stable aqueous solutions comprised of mixtures of free halogen species, N-halosulfamate compounds, N-halosulfonamide, and other compounds for biocidal applications is disclosed. Solutions containing the desired content of these species, with the desired concentration and pH value, is achieved through the electrolysis of aqueous brines containing mixtures of metal halide compounds, sulfamic acid, and other additives as desired. Controlling the relative compositions of the brines used to prepare the desired biocidal solutions, as well as the electrolysis conditions, can produce the biocidal solution with the desired composition and properties. ## Claims ### Claim 1 A method for producing a stable disinfecting solution comprising a plurality of halosulfamate and/or halosulfamic acid species and one or more halogen species, the method comprising: preparing an acidic solution comprising desired concentrations of halide ions and sulfamic acid; and electrolyzing the solution; wherein the concentrations of the halide ions and the sulfamic acid in the acidic solution and the pH of the acidic solution are chosen to produce the desired concentrations of the halosulfamate species and/or halosulfamic acid species in the stable disinfecting solution. ### Claim 2 (depends on 1) The method of claim 1 wherein the acidic solution further comprises one or more additional halogen stabilizing compounds. ### Claim 3 (depends on 2) The method of claim 2 wherein the one or more additional halogen stabilizing compounds are selected from the group consisting of lithium sulfamate, sodium sulfamate, potassium sulfamate, organic sulfonamide, methylsulfonamide, o-toluenesulfonamide, m-toluenesulfonamide, p-toluenesulfonamide, cyanuric acid, a derivative of cyanuric acid, succinimide, a derivative of succinimide, hydantoin, a derivative of hydantoin, and combinations thereof. ### Claim 4 (depends on 3) The method of claim 3 wherein the stable disinfecting solution comprises N-halosulfonamide compounds and/or N,N-dihalosulfonamide compounds. ### Claim 5 (depends on 1) The method of claim 1 wherein the halosulfamate species comprise N-halosulfamate compounds and/or N,N-dihalosulfamate compounds. ### Claim 6 (depends on 1) The method of claim 1 wherein the halosulfamic acid species comprise N-halosulfamic acid compounds and/or N,N-dihalosulfamic acid compounds. ### Claim 7 (depends on 1) The method of claim 1 wherein the stable disinfecting solution is a high concentration solution. ### Claim 8 (depends on 1) The method of claim 1 wherein the acidic solution does not comprise a non-amine base. ### Claim 9 (depends on 1) The method of claim 1 wherein the preparing step comprises: providing a salt blend comprising sulfamic acid and one or more salts comprising the halide ions; and diluting the salt blend with water. ### Claim 10 (depends on 9) The method of claim 9 wherein the salt blend comprises a pellet, briquette, or compacted form. ### Claim 11 (depends on 9) The method of claim 9 wherein the salt blend comprises a solid solution. ### Claim 12 (depends on 9) The method of claim 9 wherein the salt blend comprises an anti-caking agent. ### Claim 13 (depends on 1) The method of claim 1 further comprising flowing the acidic solution through an electrolytic cell at a flow rate selected to produce the desired pH of the stable disinfecting solution. ### Claim 14 (depends on 13) The method of claim 13 further comprising increasing the flow rate, thereby maintaining the acidity of electrolyte in the vicinity of cathodes in the electrolytic cell during the electrolyzing step. ### Claim 15 (depends on 14) The method of claim 14 further comprising removing scale from surfaces of the cathodes or preventing the formation of scale on the surfaces of the cathodes. ### Claim 16 (depends on 1) The method of claim 1 wherein the pH of the acidic solution is less than 4. ### Claim 17 (depends on 16) The method of claim 16 wherein the pH of the acidic solution is less than 2. ### Claim 18 (depends on 1) The method of claim 1 wherein the pH of the stable disinfecting solution is greater than 9. ### Claim 19 (depends on 18) The method of claim 18 wherein the pH of the stable disinfecting solution is greater than 11. ### Claim 20 (depends on 1) The method of claim 1 wherein the pH of the stable disinfecting solution is less than 3.