# US 11,299,693 B2 · High performance dishwasher compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,299,693 B2 - Document ID: US11299693B2 - Status: Granted - Kind: B2 - Application number: 16/984,691 - Filed: 2020-08-04 - Published: 2020-11-19 - Granted: 2022-04-12 - Earliest claimed: 2017-11-29 - Assignees: Korex Canada Company - Applicants: Korex Canada Company - Inventors: Douglas Robert Watson - Web page: https://patentgrep.com/patent/US11299693B2 ## CPC - C11D 3/33: Amino carboxylic acids - C11D 1/72: Ethers of polyoxyalkylene glycols - C11D 3/0047: {pH regulated compositions} - C11D 3/046: {Salts} - C11D 3/08: Silicates - C11D 3/10: Carbonates {; Bicarbonates} - C11D 3/2082: {Polycarboxylic acids-salts thereof} - 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 3/3749: {Polyolefins; Halogenated polyolefins; Natural or synthetic rubber; Polyarylolefins or halogenated polyarylolefins} - C11D 3/3765: {in liquid compositions} - C11D 3/378: {(Co)polymerised monomers containing sulfur, e.g. sulfonate} - C11D 3/3784: {(Co)polymerised monomers containing phosphorus} - C11D 3/38618: {Protease or amylase in liquid compositions only} - C11D 17/0008: {aqueous liquid non soap compositions (C11D3/0015, C11D3/3947, C11D3/3956 take precedence)} - C11D 17/003: {Colloidal solutions, e.g. gels; Thixotropic solutions or pastes} - C11D 2111/18: Glass; Plastics - 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, at least one surfactant, and at least one enzyme. The dishwasher composition can be a liquid or a gel and has a pH of from 7.0 to 9.5 and may contain less than 1 wt. % silicates based on the total weight of the dishwasher composition. 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, at least one surfactant, at least one enzyme, and one or more enzyme stabilizing additives comprising a tripeptide inhibitor(s), 4-formyl, phenyl boronic acid, or both; 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 based on the total weight of the dishwasher composition. ### Claim 2 (depends on 1) The dishwashing composition of claim 1, wherein the at least one enzyme comprises one or a plurality of hydrolase enzymes. ### Claim 3 (depends on 2) The dishwashing composition of claim 2, wherein the one or a plurality of hydrolase enzymes comprises one or more hydrolase selected from the group consisting of protease, amylase, mannanase, lipase, pectinase, or combinations of these. ### Claim 4 (depends on 2) The dishwasher composition of claim 2, wherein the one or a plurality of hydrolase enzymes comprises at least one protease enzyme and at least one amylase enzyme. ### Claim 5 (depends on 1) The dishwasher composition of claim 1, further comprising a detersive polymer, the detersive polymer comprising a copolymer or terpolymer of sulfonate containing monomers and carboxylate containing monomers, wherein the detersive polymer comprises from 10 wt. % to 50 wt. % sulfonic acid monomer units, sulfonate containing monomer units, or both. ### Claim 6 (depends on 1) The dishwasher composition of claim 1, wherein the at least one strong chelant—one or more than one of L-glutamic acid N,N-diacetic acid (GLDA), methylglycine diacetic acid (MGDA), ethylene diamine tetraacetic acid (EDTA), and iminodisuccinic acid (IDS), metal salts thereof, or combinations thereof. ### Claim 7 (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, malic acid or a metal salt thereof, gluconic acid or a metal salt thereof, ethylenediamine-N,N-disuccinic acid (EDDS) or a metal salt thereof, or combinations thereof. ### Claim 8 (depends on 1) The dishwasher composition of claim 1, further comprising a detersive polymer comprising one or more different monomers derived from the acid form or neutralized form of one or more of acrylic acid, maleic acid, methacrylic acid, itaconic acid, t-butyl acrylamide, aspartic acid, 2-acrylamido-2-methyl-propane sulfonic acid, sulfonated styrene, and combinations thereof, wherein the detersive polymer has a weight average molecular weight of less than or equal to 15,000 g/mol. ### Claim 9 (depends on 8) The dishwasher composition of claim 8, wherein the detersive polymer has a phosphono end group on the molecule. ### Claim 10 (depends on 1) The dishwasher composition of claim 1, further comprising an anti-spotting polymer comprising a copolymer of diisobutylene and maleic acid. ### Claim 11 (depends on 1) The dishwasher composition of claim 1, wherein the dishwasher composition comprises up to 5 wt. % metal alkali salts of carbonate, up to 15% of alkali metal salts of bicarbonate, up to 15% sodium sulfate, up to 15% sodium chloride, or combinations of these based on the total weight of the dishwasher composition. ### Claim 12 (depends on 1) The dishwasher composition of claim 1, wherein the dishwasher composition is substantially free of phosphorous-containing compounds. ### Claim 13 (depends on 1) The dishwasher composition of claim 1, further comprising one or more phosphonate containing compounds comprising one or more of 1-hydroxyethylidene 1,1-diphosphonic acid, 2-phosphonobutane-1,2,4,-tricarboxylic acid, amino tris (methylene phosphonic acid), metal salts thereof, or combinations of these. ### Claim 14 (depends on 1) The dishwasher composition of claim 1, further comprising one or more structuring constituents selected from xanthan gum, guar gum, cellulosic thickeners, cross-linked polyacrylate structurants, or combinations of these. ### Claim 15 (depends on 1) The dishwasher composition of claim 1, further comprising one or more preservative constituents operable to prevent microbial spoilage. ### Claim 16 (depends on 1) The dishwasher composition of claim 1, comprising a specific gravity of 1.03 to 1.25. ### Claim 17 (depends on 1) The dishwasher composition of claim 1, comprising: from 1 wt. % to 30 wt. % strong chelant; from 3 wt. % to 20 wt. % weak chelant; from 0.1 wt. % to 6.0 wt. % enzymes; from 1.0 wt. % to 10.0 wt % surfactant; optionally, from 0.1 wt. % to 10.0 wt. % detersive polymer; optionally, from 0.1 wt. % to 3.0 wt. % structuring constituent; and water. ### Claim 18 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, at least one enzyme comprising one or a plurality of hydrolase enzymes, and one or more enzyme stabilizing additives comprising a tripeptide inhibitor(s), 4-formyl, phenyl boronic acid, or both; 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 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 19 (depends on 18) The method of claim 18, wherein the water has a hardness of from 100 mg/L to 325 mg/L. ### Claim 20 A dishwasher composition comprising: at least one strong chelant, at least one weak chelant, at least one surfactant, at least one enzyme, and at least one detersive polymer comprising a structure with carboxymethyl inulin; 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 based on the total weight of the dishwasher composition.