# US 10,767,140 B2 · High performance dishwasher compositions for short dishwasher cycles and methods of making the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,140 B2 - Document ID: US10767140B2 - Status: Granted - Kind: B2 - Application number: 16/202,958 - Filed: 2018-11-28 - Published: 2019-05-30 - Granted: 2020-09-08 - Earliest claimed: 2017-11-29 - Assignees: Korex Canada Company - Applicants: Korex Canada Company - Inventors: Douglas Robert Watson - Web page: https://patentgrep.com/patent/US10767140B2 ## CPC - C11D 3/378: {(Co)polymerised monomers containing sulfur, e.g. sulfonate} - C11D 1/72: Ethers of polyoxyalkylene glycols - C11D 3/0047: {pH regulated compositions} - C11D 3/08: Silicates - C11D 3/10: Carbonates {; Bicarbonates} - C11D 3/2086: {Hydroxy carboxylic acids-salts thereof} - C11D 3/222: {Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin} - C11D 3/33: Amino carboxylic acids - C11D 3/38618: {Protease or amylase in liquid compositions only} - C11D 3/38636: {containing enzymes other than protease, amylase, lipase, cellulase, oxidase or reductase} - C11D 3/38663: {Stabilised liquid enzyme compositions} - C11D 2111/14: Hard surfaces - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL ## Abstract A dishwasher composition includes at least one strong chelant, at least one weak chelant, a structural constituent, at least one surfactant, and a primary polymer. The primary polymer includes a copolymer having sulfonic acid monomer units and monomer units comprising one or more supplemental monomers, wherein the primary polymer comprises from 10 wt. % to 50 wt. % sulfonic acid monomer units and has a weight average molecular weight of less than or equal to 20,000 g/mol. The dishwasher composition can be a liquid or a gel and has a pH of from 7.0 to 9.5. Methods of washing articles include preparing a wash solution that includes water and the dishwasher composition, and contacting at least one article with the washing solution during at least a portion of a wash cycle of a commercially-available dishwasher. ## Claims ### Claim 1 A dishwasher composition comprising: at least one strong chelant, at least one weak chelant, a structural constituent, at least one surfactant, and a primary polymer, the primary polymer comprising a copolymer which is a polymerized reaction product of sulfonic acid monomer units and monomer units comprising one or more supplemental monomers, wherein the primary polymer comprises from 10 wt. % to 50 wt. % sulfonic acid monomer units and has a weight average molecular weight of less than or equal to 20,000 g/mol; wherein the dishwasher composition is a liquid or a gel having a pH of from 7.0 to 9.5, and the dishwasher composition includes less than 0.5 wt. % silicates, carbonates, and bicarbonates combined based on the total weight of the dishwasher composition. ### Claim 2 (depends on 1) The dishwasher composition of claim 1, wherein the dishwasher composition is substantially free of silicates, carbonates, and bicarbonates. ### Claim 3 (depends on 1) The dishwasher composition of claim 1, wherein the dishwasher composition is substantially free of phosphorous-containing compounds. ### Claim 4 (depends on 1) The dishwasher composition of claim 1, further comprising an enzyme composition comprising at least one enzyme. ### Claim 5 (depends on 4) The dishwasher composition of claim 4, wherein the at least one enzyme includes at least one of a protease enzyme, an amylase enzyme, a hydrolase enzyme, and combinations thereof. ### Claim 6 (depends on 4) The dishwasher composition of claim 4, wherein the at least one enzyme comprises a protease enzyme and an amylase enzyme. ### Claim 7 (depends on 4) The dishwasher composition of claim 4, wherein the enzyme composition comprises an enzyme stabilizing additive. ### Claim 8 (depends on 1) The dishwasher composition of claim 1, wherein the sulfonic acid monomer includes one or more than one of 2-acrylamido-2-methyl-1-propanesulfonic acid, 4-sulfophenol methallyl ether, 3-allyloxy-2-hydroxy-1-propane sulfonic acid, 2-methacrylamido-2-methyl-1-propanesulphonic acid, 3-methacrylamido-2-hydroxy-propanesulphonic acid, allylsulphonic acid, methallylsulphonic acid, allyloxybenzenesulphonic acid, methallyloxybenzenesulphonic acid, 2-hydroxy-3-(2-propenyloxy)propanesulphonic acid, 2-methyl-2-propene-1-sulphonic acid, styrene sulphonic acid, vinylsulphonic acid, 3-sulphopropyl acrylate, 3-sulphopropyl methacrylate, sulphomethylacrylamide, sulphomethylinethacrylamide, and water soluble salts thereof. ### Claim 9 (depends on 1) The dishwasher composition of claim 1, wherein the at least one strong chelant comprises one or more than one of N,N-bis(carboxymethyl) glutamic acid (GLDA), methylglycine diacetic acid (MGDA), ethylene diamine tetraacetic acid (EDTA), and iminodisuccinic acid (IDS), metal salts thereof, or combinations thereof. ### Claim 10 (depends on 1) The dishwasher composition of claim 1, wherein the at least one weak chelant comprises at least one of citric acid, sodium citrate, sodium citrate dihydrate, gluconic acid or a metal salt thereof, ethylenediamine-N,N-disuccinic acid (EDDS) or a metal salt thereof, or combinations thereof. ### Claim 11 (depends on 1) The dishwasher composition of claim 1, wherein the structural constituent is xanthan gum. ### Claim 12 (depends on 1) The dishwasher composition of claim 1, comprising a specific gravity of 1.03 to 1.20. ### Claim 13 (depends on 1) The dishwasher composition of claim 1, wherein the surfactant is a low-foaming nonionic surfactant. ### Claim 14 (depends on 1) The dishwasher composition of claim 1, further comprising an anti-spotting polymer. ### Claim 15 (depends on 1) The dishwasher composition of claim 1, further comprising at least one secondary polymer. ### Claim 16 (depends on 1) The dishwasher composition of claim 1, comprising: from 3 wt. % to 30 wt. % strong chelant; from 3 wt. % to 20 wt. % weak chelant; from 0.1 wt. % to 6.0 wt. % primary polymer; from 0.1 wt. % to 6.0 wt. % enzymes; from 1.0 wt. % to 10.0 wt % surfactant; from 0.1 wt. % to 3.0 wt. % structuring constituent; and water. ### Claim 17 A method of washing articles, the method comprising: forming a washing solution in a washing machine, the washing solution comprising water and a dishwasher composition, the dishwasher composition comprising: at least one strong chelant, at least one weak chelant, a structural constituent, at least one surfactant, and a primary polymer, the primary polymer comprising a copolymer which is a polymerized reaction product of at least 10 wt. % to 50 wt. % sulfonic acid monomer units and monomer units comprising one or more supplemental monomers, wherein the primary polymer has a weight average molecular weight of less than or equal to 20,000 g/mol; wherein the dishwasher composition is a liquid or a gel having a pH of from 7.0 to 9.5, and the dishwasher composition includes less than 0.5 wt. % silicates, carbonates, and bicarbonates combined based on the total weight of the dishwasher composition; and contacting at least one article with the washing solution during at least a portion of a wash cycle of a commercially-available dishwasher. ### Claim 18 (depends on 17) The method of claim 17, wherein the wash cycle has a duration of less than or equal to 90 minutes. ### Claim 19 (depends on 17) The method of claim 17, wherein the water has a hardness greater than or equal to 150 mg/L. ### Claim 20 (depends on 17) The method of claim 17, wherein the water has a hardness of from 150 mg/L to 325 mg/L.