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(12) Patent Application Publication (10) Pub. No.: US 2006/0293202 A1 Cate Et Al

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(12) Patent Application Publication (10) Pub. No.: US 2006/0293202 A1 Cate Et Al US 200602932O2A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2006/0293202 A1 Cate et al. (43) Pub. Date: Dec. 28, 2006 (54) LOW RESIDUE CLEANERS FOR FOOD Publication Classification CONTACT SURFACES (51) Int. Cl. (76) Inventors: Sumi Cate, Oakland, CA (US); Aram CLID 3/20 (2006.01) Garabedian, Fremont, CA (US); Lily (52) U.S. Cl. .............................................................. S10/235 Cheng, Pleasanton, CA (US); David L. Deleeuw, San Ramon, CA (US) (57) ABSTRACT A cleaning composition with a 2-hydroxycarboxylic acid Correspondence Address: and a food safe nonionic Surfactant gives good antimicrobial THE CLOROX COMPANY performance with improved filming and streaking perfor P.O. BOX 24305 mance combined with low residue and high grease cleaning OAKLAND, CA 94.623-1305 (US) capability for use on and around food contact surfaces. The composition may contain an anionic Surfactant to provide (21) Appl. No.: 11/424,667 improved wetting performances, and may optionally contain a solvent, additional Surfactants, and other adjuncts. The (22) Filed: Jun. 16, 2006 food safe nonionic surfactant is preferably food safe or of low toxicological concern for use on animal, human and Related U.S. Application Data food contact surfaces. The composition can be used directly, diluted for use or impregnated and used on a wipe or other (63) Continuation-in-part of application No. 1 1/168,106, Substrate, and require no rinsing or removal from the Surface filed on Jun. 28, 2005. following application and cleaning. US 2006/02932O2 A1 Dec. 28, 2006 LOW RESIDUE CLEANERS FOR FOOD CONTACT palmitic, Stearic, oleic, linoleic and mixtures thereof, SURFACES polyalkylene oxide derivatives of sorbitan, polyalky lene oxide sorbitol aliphatic esters, polyalkylene oxide CROSS REFERENCE TO RELATED derivatives of Sucrose, polyalkylene oxide Sucrose APPLICATIONS esters, and combinations thereof; 0001. The present application is a continuation-in-part of 0010) c. 0.1 to 5% by weight of a solvent; and Co-pending application Ser. No. 1 1/168,106, filed Jun. 28, 2005, which is hereby incorporated by reference. 0011 d. 0 to 0.25% by weight of an additional surfac tant selected from the group consisting of anionic, BACKGROUND OF THE INVENTION cationic, ampholytic, amphoteric and Zwitterionic Sur 0002) 1. Field of the Invention factants, and combinations thereof; 0003. The present invention relates generally to cleaning wherein the ratio of said additional surfactant to said food compositions for use on hard Surfaces. The invention also safe nonionic Surfactant is less than 0.5. relates to cleaning compositions for use with cleaning Sub 0012. In accordance with the above objects and those that Strates, cleaning heads, cleaning pads, cleaning sponges and will be mentioned and will become apparent below, one related systems for cleaning hard Surfaces. The composition aspect of the present invention comprises a cleaning com also relates to acidic cleaning compositions with low resi position for use on food contact Surfaces comprising: due. The invention also relates to cleaning compositions Suitable for use on food contact services and on Surfaces in 0013 a. 1 to 5% byy We1gweight lactic acid; and around food preparation areas such as countertops, 0014) b. 0.1 to 0.5% by weight of a food safe nonionic kitchen tables, stoves and the like. Surfactant; 0004 2. Description of the Related Art 0015 c. up to 5% by weight of a solvent; and 0005 U.S. Pat. No. 6,699,825 to Rees et al. discloses low residue antimicrobial cleaners with low concentrations of 0016 d. 0.01 to 0.25% by weight of an additional organic acid, glycols, and solvents with less than 10% water Surfactant comprising a food grade anionic Surfactant solubility. U.S. Pat. No. 6,812, 196 to Rees et al. discloses Selected from the group consisting of sodium lauryl antimicrobial cleaners with solvents of low volatility. PCT Sulfate, Sodium dodecyl Sulfate, linear alkyl Sulfonate, Pat. App. WO2004/018599 to McCue et al. discloses anti linear alkylbenzene sulfonate, and mixtures thereof; microbial cleaners with mixtures of anionic and nonionic wherein the ratio of said additional surfactant to said food Surfactants. safe nonionic Surfactant is less than 0.5. 0006 Prior art compositions do not combine disinfection 0017. In accordance with the above objects and those that and low residue, and particularly low filming and streaking will be mentioned and will become apparent below, one on Surfaces, especially with food safe ingredients. It is aspect of the present invention comprises a cleaning Sub therefore an object of the present invention to provide a strate impregnated with a cleaning composition comprising: cleaning composition that overcomes the disadvantages and shortcomings associated with prior art cleaning composi 0018 a. 1 to 5% by weight lactic acid: tions. 0.019 b. 0.1 to 0.5% by weight of a food safe nonionic SUMMARY OF THE INVENTION Surfactant; 0007. In accordance with the above objects and those that 0020 c. up to 5% by weight of a solvent; and will be mentioned and will become apparent below, one 0021 d. 0.01 to 0.25% by weight of an additional aspect of the present invention comprises a cleaning com Surfactant selected from the group consisting of position comprising: anionic, cationic, ampholytic, amphoteric and Zwitte 0008 a. 1 to 5% by weight lactic acid: rionic Surfactants, and combinations thereof. wherein the ratio of said additional surfactant to said food 0009 b. 0.1 to 0.5% by weight of a food safe nonionic safe nonionic Surfactant is less than 0.5. Surfactant selected from the group consisting of non ionic polyoxyalkylene condensates derivatized with 0022. In accordance with the above objects and those that fatty alkyl ethers, nonionic block copolymers derived will be mentioned and will become apparent below, one from polyethylene and polypropylene derivatized with aspect of the present invention comprises a method of glycol radicals, nonionic tetrafunctional block copoly treating a food contact Surface to remove residues and render mers terminating in primary hydroxyl groups, poloX the surface suitable for contact with ingestible food items amines, nonionic copolymers of ethylene oxide and comprising: propylene oxide block copolymers with terminal sec ondary hydroxyl groups, nonionic difunctional block 0023 a. applying to said food contact surface by means copolymers of polyoxyethylene and polyoxypropylene of spraying or wiping a food safe cleaning composition with terminal primary hydroxyl groups, nonionic comprising: difunctional block copolymers of polyoxyethylene and polyoxypropylene with terminal secondary hydroxyl 0024 i. 1 to 5% by weight lactic acid; groups, nonionic polymer condensates of polyethylene 0.025 ii. 0.1 to 0.5% by weight food safe nonionic glycol and fatty acids selected from lauric, myristic, Surfactant; US 2006/02932O2 A1 Dec. 28, 2006 0026 iii. 0 to 0.25% of an additional surfactant complete elimination or destruction of all forms of microbial Selected from the group consisting of anionic, cationic, life and which is authorized under the applicable regulatory ampholytic, amphoteric and Zwitterionic Surfactants, laws to make legal claims as a “Sterilant’ or to have and combinations thereof, and sterilizing properties or qualities. 0027) iv. up to 5% by weight of a solvent; 0037. In the application, effective amounts are generally those amounts listed as the ranges or levels of ingredients in wherein the ratio of additional surfactant to food safe the descriptions, which follow hereto. Unless otherwise nonionic Surfactant is less than 0.5; stated, amounts listed in percentage ("%s") are in weight 0028 b. wiping said composition uniformly across said percent (based on 100% active) of the cleaning composition Surface to expose Surface to said cleaning composition; alone, not accounting for the Substrate weight. Each of the noted cleaner composition components and Substrates is 0029 c. leaving said composition in contact with surface discussed in detail below. for at least 30 seconds; and 0030) d. removing excess cleaning composition from 0038. As used herein, the term “substrate' is intended to Surface by additional wiping or allowing the Surface to include any material that is used to clean an article or a dry. Surface. Examples of cleaning Substrates include, but are not limited to nonwovens, sponges, films and similar materials 0031 Further features and advantages of the present which can be attached to a cleaning implement, such as a invention will become apparent to those of ordinary skill in floor mop, handle, or a hand held cleaning tool. Such as a the art in view of the detailed description of preferred toilet cleaning device. embodiments below, when considered together with the 0039. As used herein, “film” refers to a polymer film attached claims. including flat nonporous films, and porous films such as DETAILED DESCRIPTION OF THE microporous, nanoporous, closed or open celled, breathable INVENTION films, or aperatured films. 0032. Before describing the present invention in detail, it 0040. As used herein, “wiping refers to any shearing is to be understood that this invention is not limited to action that the Substrate undergoes while in contact with a particularly exemplified systems or process parameters that target Surface. This includes hand or body motion, Substrate may, of course, vary. It is also to be understood that the implement motion over a surface, or any perturbation of the terminology used herein is for the
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