# US 2023/0399587 A1 · Liquid cleaning agent concentrate, ready-to-use solution, uses thereof and cleaning method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0399587 A1 - Document ID: US20230399587A1 - Status: Published application - Kind: A1 - Application number: 18/250,134 - Filed: 2021-10-22 - Published: 2023-12-14 - Earliest claimed: 2020-10-23 - Assignees: Chemische Fabrik Dr. Weigert GmbH & Co. KG - Applicants: Chemische Fabrik Dr. Weigert GmbH & Co. KG - Inventors: Dennis Eisert; Bastian Wulff; Matthias Springer - Web page: https://patentgrep.com/patent/US20230399587A1 ## CPC - C11D 3/361: {Phosphonates, phosphinates or phosphonites} - C11D 3/386: Preparations containing enzymes {, e.g. protease or amylase} - C11D 3/0047: {pH regulated compositions} - C11D 3/0073: {Anticorrosion compositions} - C11D 3/2082: {Polycarboxylic acids-salts thereof} - C11D 3/221: {Mono, di- or trisaccharides or derivatives thereof} - C11D 3/33: Amino carboxylic acids - C11D 3/364: {containing nitrogen} - C11D 3/365: {containing carboxyl groups} - C11D 3/3719: {Polyamides or polyimides} - C11D 3/38618: {Protease or amylase in liquid compositions only} - C11D 3/48: Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions - C11D 17/0008: {aqueous liquid non soap compositions (C11D3/0015, C11D3/3947, C11D3/3956 take precedence)} - C11D 2111/14: Hard surfaces - C11D 2111/16: Metals - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL ## Abstract Liquid cleaning agent concentrate comprising: a. at least one phosphonate, b. a first complexing agent selected from aminopolycarboxylic acids, hydroxycarboxylic acids, hydroxypolycarboxylic acids and their salts, and c. at least one enzyme, preferably proteolytic enzyme, a pH of the liquid cleaning agent concentrate being 9 or >9. The invention also relates to a ready-to-use solution; to uses thereof for cleaning and/or disinfecting objects and to cleaning methods. ## Claims ### Claim at position 1 -17. (canceled) ### Claim 18 A liquid cleaning agent concentrate comprising: a. at least one phosphonate, b. a first chelating agent selected from (hydroxyethyl)ethylenediaminetriacetic acid, methylglycinediacetic acid and salts thereof, c. a second chelating agent selected from (hydroxyethyl)ethylenediaminetriacetic acid, ethylenediaminetetraacetic acid, glutamic acid-N,N-diacetic acid, iminodisuccinic acid, methylglycinediacetic acid and salts thereof, where the first and second chelating agents are different from one another, and d. at least one enzyme, preferably proteolytic enzyme, wherein a pH of the liquid cleaning agent concentrate is 9 or >9. ### Claim 19 (depends on 18) The liquid cleaning agent concentrate as claimed in claim 18, characterized in that the liquid cleaning agent concentrate has a pH of 9-12, preferably 10-12, more preferably 10-11. ### Claim 20 (depends on 18) The liquid cleaning agent concentrate as claimed in claim 18, characterized in that the at least one phosphonate is selected from salts of phosphonobutanetricarboxylic acid (PBTC), of aminotrismethylenephosphonic acid (ATMP), of 1-hydroxyethane-1,1-diphosphonic acid (HEDP), of diethylenetriamine penta(methylenephosphonic acid) (DTPMP) and mixtures thereof. ### Claim 21 (depends on 18) The liquid cleaning agent concentrate as claimed in claim 18, characterized in that the phosphonate is the sodium salt of phosphonobutane tricarboxylic acid, of aminotrismethylenephosphonic acid, or a mixture thereof. ### Claim 22 (depends on 18) The liquid cleaning agent concentrate as claimed in claim 18, characterized in that the first chelating agent is the sodium salt of (hydroxyethyl)ethylenediaminetriacetic acid or the sodium salt of methylglycinediacetic acid. ### Claim 23 (depends on 18) The liquid cleaning agent concentrate as claimed in claim 18, characterized in that the liquid cleaning agent concentrate comprises the sodium salt of phosphonobutanetricarboxylic acid, the sodium salt of aminotrimethylenephosphonic acid or a mixture thereof as the phosphonate, the sodium salt of (hydroxyethyl)ethylenediaminetriacetic acid as the first chelating agent, and preferably the sodium salt of methylglycine diacetic acid as the second chelating agent. ### Claim 24 (depends on 18) The liquid cleaning agent concentrate as claimed in claim 18, characterized in that the liquid cleaning agent also comprises further constituents selected from surfactants, hydrotropes, alkanolamines, alkali metal hydroxides, solvents, corrosion inhibitors, fragrances and dyes. ### Claim 25 (depends on 18) The liquid cleaning agent concentrate as claimed in claim 18, characterized in that at least one of the following constituents is present in the liquid cleaning agent concentrate in the following proportions by weight in each case: the phosphonate or phosphonate mixture in a proportion by weight of 1 to 13% by weight, preferably of 2 to 10% by weight, based on the total mass of the liquid cleaning agent concentrate; the first chelating agent in a proportion by weight of 0.5 to 10% by weight, preferably of 1 to 8% by weight, based on the total mass of the liquid cleaning agent concentrate; the second chelating agent in a proportion by weight of 0.5 to 10% by weight, preferably of 1 to 8% by weight, based on the total mass of the liquid cleaning agent concentrate; the enzyme or enzyme mixture in a proportion by weight of 0.05 to 4% by weight, preferably 0.1 to 2% by weight, based on the total mass of the liquid cleaning agent concentrate. ### Claim 26 (depends on 18) A ready-to-use application solution comprising 0.05 to 99.9/a of the liquid cleaning agent concentrate as claimed in claim 18, wherein a pH of the ready-to-use application solution is 9 or >9. ### Claim 27 (depends on 26) The ready-to-use application solution as claimed in claim 26, characterized in that the liquid cleaning agent concentrate has a pH of 9-12, preferably 10-12, more preferably 10-11. ### Claim 28 (depends on 18) The use of the liquid cleaning agent concentrate as claimed in claim 18 for cleaning and/or disinfecting objects, preferably for machine cleaning and/or disinfecting objects. ### Claim 29 (depends on 28) The use as claimed in claim 28, characterized in that the objects are medical and/or surgical instruments and/or apparatuses. ### Claim 30 (depends on 28) The use as claimed in claim 28, characterized in that the liquid cleaning agent concentrate or the ready-to-use application solution is dispensed cold, preferably at a temperature of 38° C. or less, more preferably of 18 to 35° C., even more preferably of 20 to 30° C., still more preferably of 22 to 27° C., even more preferably at about 25° C. ### Claim 31 (depends on 26) A method for cleaning medical and/or surgical instruments and/or apparatuses, characterized by the following steps: a) preparing a ready-to-use application solution as claimed in claim 26, b) cleaning of the medical and/or surgical instruments and/or apparatuses with the ready-to-use application solution. ### Claim 32 (depends on 31) The method as claimed in claim 31, characterized in that the ready-to-use application solution is prepared cold, preferably at a temperature of 38° C. or less, more preferably of 18 to 35° C., further preferably of 20 to 30° C., still more preferably of 22 to 27° C., even more preferably at about 25° C.