# US 2019/0316063 A1 · Detergent composition comprising phosphinosuccinic acid adducts and methods of use > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0316063 A1 - Document ID: US20190316063A1 - Status: Published application - Kind: A1 - Application number: 16/452,662 - Filed: 2019-06-26 - Published: 2019-10-17 - Earliest claimed: 2012-09-13 - Assignees: Ecolab USA Inc. - Applicants: Ecolab USA Inc. - Inventors: CARTER M. SILVERNAIL; ERIK C. OLSON - Web page: https://patentgrep.com/patent/US20190316063A1 ## CPC - C11D 3/365: {containing carboxyl groups} - C11D 3/044: {Hydroxides or bases} - C11D 3/08: Silicates - C11D 3/10: Carbonates {; Bicarbonates} - C11D 3/2082: {Polycarboxylic acids-salts thereof} - C11D 2111/16: Metals - C11D 2111/18: Glass; Plastics - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL ## Abstract Detergent compositions effective for controlling hard water scale accumulation are disclosed. Detergent compositions employing phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives with alkali metal carbonate and/or alkali metal hydroxide reduce had water scale accumulation on treated surfaces at alkaline conditions between about pH of 9 and 12.5. Methods employing the detergent compositions and preventing hard water scale accumulation are also provided. ## Claims ### Claim 1 A detergent composition comprising: between about 0.01 wt-% and about 40 wt-% of a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts; and between about 1 wt-% and about 90 wt-% of an alkalinity source comprising an alkali metal hydroxide, carbonate, metasilicate, and/or silicate; wherein the composition contains a greater weight percentage of the alkalinity source than the phosphinosuccinic acid derivative; and wherein a use solution of the detergent composition has a pH greater than 9; and the composition does not contain a bleaching agent. ### Claim 2 (depends on 1) The composition of claim 1, further comprising a water soluble polymer. ### Claim 3 (depends on 2) The composition of claim 2, wherein the water soluble polymer is selected from the group consisting of a polycarboxylic acid and hydrophobically modified polycarboxylic acid. ### Claim 4 (depends on 1) The composition of claim 1, further comprising a nonionic surfactant. ### Claim 5 (depends on 4) The composition of claim 4, wherein the nonionic surfactant comprises ethylene oxide, propylene oxide, or a combination of ethylene and propylene oxide. ### Claim 6 (depends on 1) The composition of claim 1, wherein the phosphinosuccinic acid derivative comprises at least 10 mol % of an adduct comprising a ratio of succinic acid to phosphorus from about 1:1 to 20:1. ### Claim 7 (depends on 1) The composition of claim 1, wherein the composition comprises between about 1 wt-% and about 20 wt-% of the phosphinosuccinic acid derivative and between about 10 wt-% and about 70 wt-% of the alkali metal hydroxide. ### Claim 8 (depends on 1) The composition of claim 1, wherein the phosphinosuccinic acid (I) and mono- (II), bis- (III) and oligomeric (IV) phosphinosuccinic acid adducts have the follow formulas: where M is selected from the group consisting of H−, Na−, K+, NH4+, and mixtures thereof, wherein m plus n is greater than 2. ### Claim 9 (depends on 1) The composition of claim 1, where the use solution comprises from about 100-1500 ppm of the alkalinity source, from about 5-500 ppm of the phosphinosuccinic acid derivative and has a pH between about 10.5 and 12.5. ### Claim 10 (depends on 4) The composition of claim 4, wherein the nonionic surfactant is selected from the group consisting of an ethylene oxide/propylene oxide copolymer, capped ethylene oxide/propylene oxide copolymer, ethylene oxide/propylene oxide block copolymer, alcohol alkoxylate, capped alcohol alkoxylate, and combinations thereof. ### Claim 11 (depends on 10) The composition of claim 10, wherein the nonionic surfactant is an ethylene oxide/propylene oxide block copolymer. ### Claim 12 (depends on 4) The composition of claim 4, wherein the composition comprises between about 0.1 wt-% and about 40 wt-% of the nonionic surfactant. ### Claim 13 (depends on 4) The composition of claim 4, wherein the composition comprises from about 10 wt-% to about 70 wt-% of the alkalinity source, from about 1 wt-% to about 20 wt-% of the phosphinosuccinic acid derivative, and from about 0.1 wt-% to about 25 wt-% of the nonionic surfactant. ### Claim 14 (depends on 4) The composition of claim 4, wherein the detergent composition use solution comprises from about 100-1500 ppm of the alkalinity source, from about 1-500 ppm of the phosphinosuccinic acid derivative, and from about 1-50 ppm of a nonionic surfactant. ### Claim 15 (depends on 4) The composition of claim 4, wherein the composition comprises from about 10-80 wt-% of the alkalinity source, from about 1-20 wt-% of the phosphinosuccinic acid derivative, and from about 1-10 wt-% the nonionic surfactant. ### Claim 16 (depends on 1) The composition of claim 1, wherein the phosphinosuccinic acid derivative comprises at least 10 mol % of an adduct comprising a ratio of succinic acid to phosphorus from about 1:1 to 15:1. ### Claim 17 (depends on 1) The composition of claim 1, wherein the composition further comprises a defoaming agent. ### Claim 18 (depends on 17) The composition of claim 17, wherein the defoaming agent comprises silica dispersed in polydimethylsiloxane, fatty amide, hydrocarbon wax, fatty acid, fatty ester, fatty alcohol, fatty acid soap, ethoxylate, mineral oil, polyethylene glycol ester, alkyl phosphate ester, and combinations thereof. ### Claim 19 (depends on 1) The composition of claim 1, wherein the composition further contains water in the amount of from about 0.01 wt-% to about 90 wt-%. ### Claim 20 (depends on 1) The composition of claim 1, further comprising at least one of an etch protectant, a fragrance, a dye, an enzyme, a dispersant, and an anti-redeposition agent.