WO2006013319A1 - Compositions de nettoyage de surface dure acides - Google Patents

Compositions de nettoyage de surface dure acides Download PDF

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Publication number
WO2006013319A1
WO2006013319A1 PCT/GB2005/002797 GB2005002797W WO2006013319A1 WO 2006013319 A1 WO2006013319 A1 WO 2006013319A1 GB 2005002797 W GB2005002797 W GB 2005002797W WO 2006013319 A1 WO2006013319 A1 WO 2006013319A1
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composition
cleaning
hard surface
compositions
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PCT/GB2005/002797
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English (en)
Inventor
James Chi-Cheng Feng
Farid Ahmad Nekmard
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Reckitt Benckiser Inc
Reckitt Benckiser (Uk) Limited
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Publication of WO2006013319A1 publication Critical patent/WO2006013319A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/32—Amides; Substituted amides
    • C11D3/323—Amides; Substituted amides urea or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/825—Mixtures of compounds all of which are non-ionic
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/042—Acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/43—Solvents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • C11D1/24—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds containing ester or ether groups directly attached to the nucleus
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/662—Carbohydrates or derivatives
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • the present invention relates to hard surface cleaning compositions, methods for their manufacture as well as methods for their use. More particularly the present invention relates to largely aqueous hard surface cleaning compositions which are acidic in nature, methods for their manufacture and methods for their use in the treatment of inanimate hard surfaces.
  • Cleaning compositions are commercially important products and enjoy a wide field of utility in assisting in the removal of dirt and grime from surfaces, especially those characterized as useful with "hard surfaces”.
  • Hard surfaces are those which are frequently encountered in lavatories such as toilets, shower stalls, bathtubs, bidets, sinks, etc., as well as countertops, walls, floors, etc. In such lavatory environment various forms of undesirable residues are known to form including hard water stains as well as "soap scum stains”.
  • Hard water stains are mineral stains caused by the deposition of salts, such as calcium or magnesium salts, frequently present in hard water.
  • Soap scum stains are residues of fatty acid soaps such as those which are based on alkali salts of low fatty acids, which precipitate in hard water due to the presence of metal salts therein, leaving an undesirable residue upon such surfaces.
  • US 5985929 describes a cold chemical sterilant composition including a monohydric alcohol, an urea salt, a polyhydric alcohol, a surface active agent and water.
  • the composition is not recited to have good cleaning efficacy against limescale or soapscum stains.
  • US 6340660 describes a water based urea hydrochloride cleaning solution containing amphoteric and/or nonionic surfactant, a butyne based corrosion inhibitor, and an ethanol amine is suggested for cleaning stainless steel and aluminum surfaces which is corrosive to neither aluminum nor polycarbonate glazed acrylic surfaces.
  • the urea hydrochloride present in an amount of 15% to 70% by volume in the recited compositions wherein it is used as a stabilizing constituent.
  • a Material Safety Data Sheet the Spartan Chemical Co. Inc. describes a product, "CLEAN ON THE GO ACID BATHROOM AND SHOWER CLEANER" which appears to necessarily include 50-60%wt. of urea hydrochloride.
  • a further object of the invention to provide a readily pourable and readily pumpable cleaning composition which features the benefits described above.
  • an aqueous, acidic hard surface cleaning composition which provides a cleaning benefit to a hard surface which comprises the following constituents:
  • aqueous compositions are at an highly acidic pH, namely a pH of 1.5 or less, preferably at a pH of about 1 or less, more preferably at a pH of about 0.5 or less, and most preferably at a pH of about 0.3 or less and wherein the aqueous compositions are efficacious in the solubilization and removal of limescale deposits, viz., stains, on hard surfaces.
  • compositions described above may include one or more further optional constituents including but not limited to: pH buffering agents, perfumes, perfume carriers, ⁇ colofants, germicides, thickeners, fungicides, anti-oxidants, anti-corrosion agents, etc., which are not found to deleteriously affect the cleaning properties of the inventive compositions.
  • compositions according to the invention are largely aqueous, comprising at least 80%wt. water, and are readily pourable and pumpable. Particularly preferred compositions all exhibit good storage stability, particularly under accelerated ageing testing.
  • a process for cleaning or sanitization of hard surfaces comprises the step of providing the composition as outlined above, and applying an effective amount to a hard surface requiring such treatment.
  • the present inventive compositions comprise a salt form of urea, which is desirably formed in situ, in the aqueous compositions of the present invention by reaction of urea with a chemical compound which provides a counterion.
  • a chemical compound which may provide a counterion include many known organic acids as well as inorganic acids, non-limiting examples of which include acetic acid, hydroxyacetic acid, gluconic acid, lactic acid, citric acid, sulfuric acid, nitric acid, hydrochloric acid, phosphoric acid, and the like. Of these, inorganic acids, particularly hydrochloric acid are preferred.
  • the urea salt is added as an initial constituent to the compositions when they are being produced.
  • the urea salt of the compositions is preferably selected from the group consisting of urea monosulfate, urea hydrochloride and urea acetate or mixtures thereof. More preferably the urea salt is an organic salt form of urea, such as urea hydrochloride which may be formed by-the-in-situ-reaction of urea with hydrochloric-acid under acidic ⁇ conditions in an aqueous medium- Most-preferably the urea salt-is a urea hydrochloride.
  • the urea salt is necessarily present in the inventive compositions in amounts of from 0.1 %wt.
  • compositions of the invention include one or more detersive surfactants, which may be one or more of anionic, nonionic, cationic, zwitterionic and amphoteric surfactants.
  • Nonlimiting examples of suitable nonionic surfactants which may be used in the present invention include: (1) The polyethylene oxide condensates of alkyl phenols. These compounds include the condensation products of alkyl phenols having an alkyl group containing from about 6 to 12 carbon atoms in either a straight chain or branched chain configuration with ethylene oxide, the ethylene oxide being present in an amount equal to 5 to 25 moles of ethylene oxide per mole of alkyl phenol.
  • the alkyl substituent in such compounds can be derived, for example, from polymerized propylene, diisobutylene and the like.
  • Examples of compounds of this type include nonyl phenol condensed with about 9.5 moles of ethylene oxide per mole of nonyl phenol; dodecylphenol condensed with about 12 moles of ethylene oxide per mole of phenol; dinonyl phenol condensed with about 15 moles of ethylene oxide per mole of phenol and diisooctyl phenol condensed with about 15 moles of ethylene oxide per mole of phenol.
  • the condensation products of aliphatic alcohols with from about 1 to about 60 moles of ethylene oxide.
  • the alkyl chain of the aliphatic alcohol can either be straight or branched, primary or secondary, and generally contains from about 8 to about 22 carbon atoms.
  • ethoxylated alcohols include the condensation product of myristyl alcohol condensed with about 10 moles of ethylene oxide per mole of alcohol and the condensation product of about 9 moles of ethylene oxide with coconut alcohol (a mixture of fatty alcohols with alkyl chains varying in length from about 10 to 14 carbon atoms)7- ⁇ ne example of-such a- nonionic surfactant-is-available as Empilan KM 50.
  • Polymeric alkylene oxide block copolymers include nonionic surfactants in which the major portion of the molecule is made up of block polymeric C 2 -C 4 alkylene oxides.
  • nonionic surfactants while preferably built up from an alkylene oxide chain starting group, and can have as a starting nucleus almost any active hydrogen containing group including, without limitation, amides, phenols, thiols and secondary alcohols.
  • nonionic surfactants containing the characteristic alkylene oxide blocks are those which may be generally represented by the formula (A):
  • PO represents propylene oxide
  • y equals at least 15
  • (EO) x+y equals 20 to 50% of the total weight of said compounds, and, the total molecular weight is preferably in the range of about 2000 to 15,000.
  • surfactants are available under the PLURONIC tradename from BASF or Emulgen from Kao.
  • Another group of nonionic surfactants can be represented by the formula (B):
  • nonionic surfactants which in general are encompassed by Formula B include butoxy derivatives of propylene oxide/ethylene oxide block polymers having molecular weights within the range of about 2000-5000.
  • nonionic surfactants containing polymeric butoxy (BO) groups can be represented by formula (C) as follows:
  • R is an alkyl group containing I to 20 carbon atoms, n is about 5-15 and x is about 5-15.
  • nonionic block copolymer surfactants which also include polymeric butoxy groups, are those which may be represented by the following formula (D):
  • n is about 5-15, preferably about 15, x is about 5-15, preferably about 15, and y is about 5-15, preferably about 15.
  • nonionic block copolymer surfactants include ethoxylated derivatives of propoxylated ethylene diamine, which may be represented by the following formula:
  • nonionic block copolymers include those based on a polymeric ethoxy/propoxy units which may also be used include those presently commercially available in the Plurafac® series of block copolymers (ex. BASF) These are ⁇ described to be nonionic surfactants based on-ethox-y/propoxy block copolymers, conveniently available in a-liquid form from its supplier.
  • One particularly preferred nonionic surfactant is Plurafac® SL-62 which is described to be a nonionic surfactant based on alkoxylated linear alcohols.
  • the sole nonionic surfactant present is a nonionic surfactant as described with reference to Plurafac® SL-62.
  • non-ionic surfactants include linear alcohol ethoxylates.
  • the linear alcohol ethoxylates which may be employed in the present invention are generally include the C 6 -C 15 straight chain alcohols which are ethoxylated with about 1 to 13 moles of ethylene oxide.
  • Exemplary and particularly non-ionic surfactants include Alfonic® 810-4.5, which is described in product literature from Sasol North America Inc. as having an average molecular weight of 356, an ethylene oxide content of about 4.85 moles (about 60 wt.%), and an HLB of about 12; Alfonic® 810-2, which is described in product literature from Sasol North America Inc. as having an average molecular weight of 242, an ethylene oxide content of about 2.1 moles (about 40 wt.%), and an HLB of about 12; and Alfonic® 610-3.5, which is described in product literature from Sasol North America Inc.
  • Neodol® 91 series non-ionic surfactants of interest include Neodol 91-2.5, Neodol 91-6, and Neodol 91-8.
  • Neodol 91-2.5 has been described as having about 2.5 ethoxy groups per molecule;
  • Neodol 91-6 has been described as having about 6 ethoxy groups per molecule;
  • Neodol 91-8 has been described as having about 8 ethoxy groups per molecule.
  • Another example includes a C 11 linear primary alcohol ethoxylate-averaging-about-9 moles of-ethylene-oxide per mole of alcohol, available, for example,- under the-commercial name of-Neodol®_l -9. . _ ...
  • ethoxylated alcohols include the Rhodasurf® DA series non- ionic surfactants available from Rhodia which are described to be branched isodecyl alcohol ethoxylates.
  • Rhodasurf D A-530 has been described as having 4 moles of ethoxylation and an HLB of 10.5;
  • Rhodasurf D A-630 has been described as having 6 moles of ethoxylation with an HLB of 12.5;
  • Rhodasurf D A-639 is a 90% solution of DA-630.
  • ethoxylated alcohols include those from Tomah Products (Milton, WI) under the Tomadol® tradename with the formula RO(CH 2 CH 2 O) n H where R is the primary linear alcohol and n is the total number of moles of ethylene oxide.
  • the ethoxylated alcohol series from Tomah include 91-2.5; 91-6; 91-8 - where R is linear CyCio/Cii and n is 2.5, 6, or 8; 1-3; 1-5; 1-7; 1-73B; 1-9; - where R is linear C 11 and n is 3, 5, 7 or 9; 23-1; 23-3; 23-5; 23-6.5 - where R is linear Ci 2 /C 13 and n is 1, 3, 5, or 6.5; 25-3; 25-7; 25-9; 25-12 - where R is linear C 12 /Ci 3 /C 14 / C 15 and n is 3, 7, 9, or 12; and 45- 7; 45-13 - where R is linear C 14 / C 15 and n is 7 or 13.
  • nonionic surfactants include primary and secondary linear and branched alcohol ethoxylates, such as those based on C 6 -C 18 alcohols which further include an average of from 2 to 80 moles of ethoxylation per mol of alcohol.
  • Genapol® UD series from Clariant, described as tradenames Genapol UD 030, C ⁇ -Oxo-alcohol polyglycol ether with 3 EO; Genapol UD, 050 C 11 - Oxo-alcohol polyglycol ether with 5 EO; Genapol UD 070, C ⁇ -Oxo-alcohol polyglycol ether with 7 EO; Genapol UD 080, C ⁇ -Oxo-alcohol polyglycol ether with 8 EO; Genapol UD 088, C ⁇ -Oxo-alcohol polyglycol ether with 8 EO; and Genapol UD 110, C 11 -OxO- alcohol polyglycol ether with 11 EO.
  • nonionic surfactants include those having a formula RO(CH 2 CH 2 O) n H wherein R is a mixture of linear, even carbon-number hydrocarbon chains ranging from C 12 H 25 to C 16 H 33 and n represents the number of repeating units and is a number of from about 1 to about 12. Surfactants of this formula are presently marketed under the Genapol® tradename.
  • 26-L series available from Clariant, Charlotte, N.C., include the 26-L series of the-general ⁇ )HTIuIa-RO(GH 2 CH 2 O) n H- wherein-R is a mixture — " oflinearreven carbon-number hydrocarbon chains ranging from C 12 H 25 to C 16 H 33 and n represents the number of repeating units and is a number of from 1 to about 12, such as 26-L-l, 26-L-1.6, 26-L-2, 26-L-3, 26-L-5, 26-L-45, 26-L-50, 26-L-60, 26-L-60N, 26-L- 75, 26-L-80, 26-L-98N, and the 24-L series, derived from synthetic sources and typically contain about " 55 0 Zo-Ci 2 and 45% C M alcoholsrsuch as 24-L-3, 24-L-45, 24-L-50, 24-L- 60, 24-L-60N, 24-L-75, 24-L-92, and 24-L-98N.
  • the single number following the "L” corresponds to the average degree of ethoxylation (numbers between 1 and 5) and the two digit number following the letter "L” corresponds to the cloud point in 0 C of a 1.0 wt.% solution in water.
  • C 10 oxo -alcohol ethoxylates available from BASF under the Lutensol® ON tradename. They are available in grades containing from about 3 to about 11 moles of ethylene oxide
  • Lutensol ON 30 (available under the names Lutensol ON 30; Lutensol ON 50; Lutensol ON 60; Lutensol ON 65; Lutensol ON 66; Lutensol ON 70; Lutensol ON 80; and Lutensol ON 110).
  • Nonionic surfactants include amine oxide compounds which may be defined as one or more of the following of the four general classes: (1) Alkyl di (lower alkyl) amine oxides in which the alkyl group has about 6-
  • the lower alkyl groups include between 1 and 7 carbon atoms, but preferably each include 1 - 3 carbon atoms.
  • Examples include octyl dimethyl amine oxide, lauryl dimethyl amine oxide, myristyl dimethyl amine oxide, and those in which the alkyl group is a mixture of different amine oxides, such as dimethyl cocoamine oxide, dimethyl (hydrogenated tallow) amine oxide, and myristyl/palmityl dimethyl amine oxide;
  • Alkyl di (hydroxy lower alkyl) amine oxides in which the alkyl group has about 6-22, and preferably 8-18 carbon atoms, and can be straight or branched chain, saturated or unsaturated.
  • alkyl group has about 6-22, and preferably 8-18 carbon atoms, and can be straight or branched chain, saturated or unsaturated. Examples include bis-(2-hydroxyethyl) cocoamine oxide, bis- (2-hydroxyethyl) tallowamine oxide; and bis-(2-hydroxyethyl) stearylamine oxide;
  • amine oxides which may be represented by the following structural representation:
  • R 1 wherein each Ri independently is a straight chained C 1 -C 4 alkyl group; and, R 2 is a straight chained C 6 -C 22 alkyl group or an alkylamidoalkylene having the formula
  • R 3 is C 5 -C 20 alkyl
  • alkyl groups may be linear or branched, but most preferably are linear.
  • Examples include Ammonyx® LO which is described to be as a 30%wt. active solution of lauryl dimethyl amine oxide; Ammonyx® CDO Special, described to be a about 30% wt. active solution of cocoamidopropylamine oxide, as well as Ammonyx® — MOr described to-be-a-30%wtv active solution-ofmyristyldimethylamine-oxide, all
  • nonionic surfactants include condensates of alkylene oxides, particularly ethylene oxide with sorbitan fatty acid esters. Such materials are presently commercially available under the tradename TWEENS from Imperial Chemical Industries and include polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleates which are available in a variety of grades, and with differing amounts of polyoxylethylene groups per molecule.
  • alkyl polyglycosides are alkyl polyglycosides.
  • Suitable alkyl polyglycosides are known nonionic surfactants which are alkaline and electrolyte stable.
  • Alkyl mono and polyglycosides are prepared generally by reacting a monosaccharide, or a compound hydrolyzable to a monosaccharide with an alcohol such as a fatty alcohol in an acid medium.
  • Various glycoside and polyglycoside compounds including alkoxylated glycosides and processes for making them are disclosed in U.S. Patent No. 2,974,134; U.S. Patent No.3,219,656; U.S. Patent No. 3,598,865; U.S. Patent No.
  • a preferred group of alkyl glycoside surfactants suitable for use in the practice of this invention may be represented by formula I below: RO — (RiO)y-(G) ⁇ Z b I
  • R is a monovalent organic radical containing from about 6 to about 30, preferably from about 8 to about 18 carbon atoms;
  • R 1 is a divalent hydrocarbon radical containing from about 2 to about 4 carbon atoms;
  • O is an oxygen atom;
  • y is a number which has an average value from about 0 to about 1 and is preferably 0;
  • G is a moiety derived from a reducing saccharide containing 5 or 6 carbon atoms; and
  • x is a number having an average value from about 1 to 5 (preferably from 1.1 to 2);
  • Z is O 2 M 1 ,
  • b is a number of from O to 3x+l preferably an average of from 0.5 to 2 per glycosal group;
  • p is 1 to 10
  • M 1 is H + or an organic or inorganic cation, such as, for example, an alkali metal, ammonium, monoethanolamine, or calcium.
  • R is generally the residue of a fatty alcohol having from about 8 to 30 and preferably 8 to 18 carbon atoms.
  • inventive compositions include an alkylpolyglycoside compound according to the structure:
  • R is an alkyl group, preferably a linear alkyl chain, which comprises C 8 to C 16 alkyl groups; x is an integer value of from 0 - 3, inclusive.
  • alkylglycosides examples include, for example, APGTM 325 CS which is described as being a 50% Cg-C 11 alkyl polyglycoside, also commonly referred to as D-glucopyranoside, (commercially available from Henkel Corp, Ambler PA) and Glucopon® 625 CS which is described as being a 50% C 1O -C 16 alkyl polyglycoside, also commonly referred to as a D- glucopyranoside, (available from Henkel Corp., Ambler PA), as well as other materials sold under the Glucopon® tradename.
  • Particularly preferred alkypolyglycosides include materials presently sold as Glucopon 425N, and Glucopon 425N/HH.
  • Non limiting examples of anionic surfactants which may be included in the concentrate compositions include for example, alkali metal salts, ammonium salts, amine salts, or aminoalcohol salts of one or more of the following compounds (linear and secondary): alcohol sulfates and sulfonates, alcohol phosphates and phosphonates, alkyl sulfates, alkyl ether sulfates, sulfate esters of an alkylphenoxy polyoxyethylene ethanol, alkyl monoglyceride sulfates, alkyl sulfonates, olefin sulfonates, paraffin sulfonates, beta- alkoxy alkane sulfonates, alkylamidoether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates, alkyl ether sulfonates, ethoxylated alkyl sulfonates, alkyla
  • anionic surfactants include diphenyl oxide disulfonates and alkyl diphenyl ether disulfonates, including those which are commercially available in anionic surfactant compositions from the Dow Chemical Co. These are available as Dowfax® materials of which those which conform to the following general structure are particularly useful:
  • X represents a counterion, desirably an alkali metal or ammonium counterion, yet more desirably is lithium, potassium or sodium, especially sodium, and,
  • R represents a hydrogen of a hydrophobic alkyl group, desirably a linear or branched C O -C I6 alkyl group which may be straight chained or branched, may be optionally substituted but desirably are unsubstituted C 6 -Ci 2 straight chained alpha olefins, or is tetrapropylene.
  • particularly useful are those available as Dowfax® 3B2 which is described as being a sodium salt according to the general structure depicted above and wherein R is a C 6 olefin; and, Dowfax® 2Al which is described as being a sodium salt according to the general structure depicted above and wherein R is tetrapropylene.
  • anionic surfactants are available under the following tradenames: Rhodapon®, Stepanol®, Hostapur®, Surf ⁇ ne®, Sandopan®, Neodox®, Biosoft®, and Avanel®.
  • a further class of useful anionic and particularly preferred anionic surfactants are alkyl ethersulfates and salts thereof, especially one or more alkyl ethersulfates which may be represented by the following general formula:
  • R is a Cg - C 18 alkyl group
  • n is an integer from 1 to 30
  • X represents an counterion selected from alkali metals and ammonium.
  • alkyl ethersulfates especially preferred are those wherein R is a C 12 -Ci S group, n is 4, and X is a sodium cation or is an ammonium cation.
  • Such alkyl ether sulfates may be produced by known methods, or in the alternative are commercially available under the trade name Steol® (Stepan Co., Northbrook, IL).
  • Exemplary useful amphoteric surfactants include alkylampho(mono)acetates having the formula
  • R represents a C 8 to C 24 alkyl group, and is preferably a C 10 to Cj 6 alkyl group.
  • amphoteric surfactants include sultaines, including compounds which may be represented by the following formula:
  • alkylaminodipropionates including compounds which may be represented by the following formula:
  • R represents a Cg to C 24 alkyl group, and is preferably a C 10 to C 16 alkyl group.
  • R represents a Cg to C 24 alkyl group, and is preferably a C 10 to C 16 alkyl group.
  • these useful and preferred amphoteric surfactants can be found under the tradename MIRANOL from Rhodia (Cranbury, NJ). Some examples include MIRANOL C2M-Conc.
  • MIRANOL NP described to be disodium cocoamphodiacetate
  • MIRANOL FA-NP described to be sodium cocoamphotacetate
  • MIRANOL DM described to be sodium steroamphoacetate
  • MIRANOL CS cone described to be sodium cocoamphohydroxypropyl sulfonate
  • MIRANOL HMA described to be sodium lauroamphoacetate
  • MIRANOL C2M described to be cocoamphodiprioponic acid
  • MIRANOL C2M-SF described to be disodium cocoamphodiproprionate
  • MtRANOL CM-SF Cone described as being cocoamphopropriate
  • MIRATAINE H2C-HA described as sodium lauiminodiproprionate
  • MIRATAINE H2C-HA described to be sodium lauriminodipropionate
  • MIRATAINE CBS described to be a cocoaminopropoxy hydroxyl sultaine
  • MIRANOL Ultra L-32 described as sodium lauroamphoacetate
  • amphoteric surfactants are also available under the tradename AMPHOTERGE from Lonza (Fair Lawn, NJ) such as AMPHOTERGE K described to sodium cocoamphoproprionate; AMPHOTERGE K-2, described as disodium cocoamphodiproprionate; AMPHOTERGE W, described to be sodium cocoamphoacetate; and AMPHOTERGE W-2, described to be disodium cocoamphodiacetate.
  • AMPHOTERGE K described to sodium cocoamphoproprionate
  • AMPHOTERGE K-2 described as disodium cocoamphodiproprionate
  • AMPHOTERGE W described to be sodium cocoamphoacetate
  • AMPHOTERGE W-2 described to be disodium cocoamphodiacetate.
  • amphoteric surfactants include one or more water soluble betaine surfactants which may be represented by the general formula:
  • R 1 is an alkyl group containing from 8 to 18 carbon atoms, or the amido radical which may be represented by the following general formula:
  • R is an alkyl group having from 8 to 18 carbon atoms
  • a is an integer having a value of from 1 to 4 inclusive
  • R 2 is a C 1 -C 4 alkylene group.
  • water-soluble betaine surfactants include dodecyl dimethyl betaine, as well as cocoamidopropylbetaine.
  • detersive surfactants and particularly preferred systems of detersive surfactants are exemplified by one or more of the following examples.
  • the one or more detersive surfactants are present in amounts up to 10%wt, preferably are present in amount of 0.1 - 8%wt., more preferably 0.5 - 5%wt, and most preferably 1 - 3.5%wt. based on the total weight of the composition of which they form a part.
  • the inventive compositions comprise one or more non-aqueous solvents as a necessary constituent.
  • non-aqueous solvents which can be used in minor amounts in the inventive compositions include those which are at least partially water-miscible such as alcohols, (e.g., low molecular weight alcohols, such as, for example, ethanol, propanol, isopropanol, and the like), glycols (such as, for example, ethylene glycol, propylene glycol, hexylene glycol, and the like), water-miscible ethers (e.g.
  • alcohols e.g., low molecular weight alcohols, such as, for example, ethanol, propanol, isopropanol, and the like
  • glycols such as, for example, ethylene glycol, propylene glycol, hexylene glycol, and the like
  • water-miscible ethers e.g.
  • diethylene glycol diethylether, diethylene glycol dimethylether, propylene glycol dimethylether), water-miscible glycol ether e.g. propylene glycol monomethylether, propylene glycol mono ethylether, propylene glycol monopropylether, propylene glycol monobutylether, propylene glycol monohexyl ether, ethylene glycol monobutylether, dipropylene glycol monomethylether, dipropylene glycol monobutylether, diethyleneglycol monobutylether
  • lower esters of monoalkylethers of ethyleneglycol or propylene glycol e.g.
  • propylene glycol monomethyl ether acetate all commercially available such as from Union Carbide (Danbury, CT), Dow Chemical Co. (Midland, MI) or Hoechst (Germany). Mixtures of several organic solvents can also be used.
  • Preferred non-aqueous solvents which can be used in minor amounts in the inventive compositions are glycol ethers.
  • Exemplary useful glycol ethers are those having the general structure Ra-O-Rb-OH, wherein Ra is an alkyl of 1 to 20 carbon atoms, preferably 1 to 8 carbon atoms, or an aryl of at least 6 carbon atoms, and Rb is an alkylene of 1 to 8 carbons, preferably 1 to 3 carbons, or is an ether or polyether containing from 2 to 20 carbon atoms.
  • glycol ethers include propylene glycol methyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, propylene glycol isobutyl ether, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol butyl ether, diethylene glycol phenyl ether, propylene glycol phenol ether, dipropylene glycol monobutyl ether and mixtures thereof
  • Specific examples of more preferred glycol ether solvents include propylene glycol methyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, propylene glycol isobutyl ether, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol butyl ether, diethylene glycol phenyl ether, propylene glycol phenol ether, and mixtures thereof.
  • Particularly preferred organic solvents, as well as particularly preferred organic solvent systems are
  • the organic solvents are present in amounts up to 10%wt, preferably are present in amount of 0.001 - 5%wt., more preferably 0.01 - 2%wt., based on the total weight of the composition of which they form a part.
  • the inventive compositions comprise not more 2%wt, preferably not more than 1% glycol ethers when present as it has been observed by the present inventors that the accelerated ageing stability of the compositions are deleteriously affected when glycol ethers are present in amount in excess of l%wt.
  • glycol ethers are absent from the inventive compositions.
  • organic solvents are wholly absent from the inventive compositions.
  • compositions according to the invention may also be included in the compositions according to the invention.
  • these may include : chelating agents, coloring agents, light stabilizers, fragrances, thickening agents, hydrotropes, pH adjusting agents, pH buffers.
  • chelating agents coloring agents, light stabilizers, fragrances, thickening agents, hydrotropes, pH adjusting agents, pH buffers.
  • Many of these materials are known to the art, per se, and are described in McCutcheon 's Detergents and Emulsifiers, North American Edition, 1998; Kirk-Othmer, Encyclopedia-ofChemicaLTechnology, ⁇ Xh. Ed., VoL23, pp. 478-541 (1997), the contents of which are herein incorporated by reference.
  • Such optional, i.e., non-essential constituents should be selected so to have little or no detrimental effect upon the desirable characteristics of the present invention, namely the blooming behavior, cleaning efficacy, disinfectant activity, and low toxicity as provided by the inventive compositions.
  • the total weight of such further conventional additives may comprise up to 15% by weight, preferably up to 10% by weight of a composition formulation.
  • compositions according to the invention are aqueous in nature.
  • Water is added to order to provide to 100% by weight of the compositions of the invention.
  • the water may be tap water, but is preferably distilled and is most preferably deionized water, or 'soft' water. If the water is tap water, it is preferably substantially free of any undesirable impurities such as organics or inorganics, especially minerals salts which are present in hard water which may thus undesirably interfere with the operation of the constituents present in the aqueous compositions according to the invention.
  • an aqueous, acidic hard surface cleaning composition which provides a cleaning benefit to a hard surface which comprises (preferably consists essentially of) the following constituents:
  • detersive surfactants selected from diphenyl oxide disulfonates, linear primary alcohol ethoxylates, and alkylpolyglcosides
  • the aqueous compositions are at highly acid pH, namely a pH of 1.5 or less, preferably at a pH of about 1, more preferably at a pH of about 0.5, and most preferably at a pH of about 0.3 or less and wherein the aqueous compositions are efficacious in the solubilization and remove of limscale deposits, viz., stains, or hard surfaces.
  • the urea salt is urea hydrochloride.
  • an aqueous, acidic hard surface cleaning composition which provides a cleaning benefit to a hard surface which comprises (preferably consists essentially of) the following constituents:
  • urea salt formed in situ in the composition (a) a urea salt formed in situ in the composition; — - (b) one or more detersive surfactants selected from diphenyl oxide disulfonates, alcohol ethoxylates, and alkylpolyglcosides; (c) one or more organic solvents;
  • the aqueous compositions are at highly acid pH, namely a pH of 1.5 or less, preferably at a pH of about 1, more preferably at a pH of about 0.5, and most preferably at a pH of about 0.3 or less and wherein the aqueous compositions are efficacious in the solubilization and removal of limescale deposits, viz., stains, on hard surfaces.
  • the urea salt is urea hydrochloride.
  • an aqueous, acidic hard surface cleaning composition which provides a cleaning benefit to a hard surface which comprises (preferably consists essentially of) the following constituents:
  • nonionic surfactants based on alcohol ethoxylates with at least one further surfactants selected from diphenyl oxide disulfonates, and alkylpolyglcosides;
  • the aqueous compositions are at highly acid pH, namely a pH of 1.5 or less, preferably at a pH of about 1, more preferably at a pH of about 0.5, and most preferably at a pH of about 0.3 or less are efficacious in the solubilization and removal of limscale deposits, viz., stains, on hard surfaces.
  • the urea salt is urea hydrochloride.
  • the inventive compositions are shelf stable aqueous cleaning and disinfecting composition which_do not undesirably degrade when subjected to an elevated temperature over an extended period of time.
  • the inventive compositions do not suffer precipitation or phase separation when a sample composition is subjected to an accelerated ageing testing at 120 0 F, for a two week, preferably a four week test period.
  • a test is a harsh test, and a useful indicator of the long term shelf stability of the tested sample composition.
  • the preferred embodiments of the invention exhibit excellent freeze/thaw stability characteristics with little or no discoloration of the composition following at least 2, preferably at least 3 freeze thaw cycles.
  • the light transmittance loss subsequent to the at least 2, preferably at least 3 freeze thaw cycles is not more than 7%, preferably not more than 5% of the original light transmittance of a sample of the inventive composition prior to subsequent freeze/thaw cycles.
  • inventive compositions may be produced according to any of a number of methods.
  • the components can be added in any order although it may be preferred to add first a major proportion of the water, then any detersive surfactants present, followed by the remaining constituents and ultimately the remaining balance of water required to produce 100%wt. of the composition.
  • the addition of the constituents to the water is done under continuous stirring so to ensure homogeneity of the final composition.
  • the compositions are produced by first supplying the urea to a major proportion of the water, followed by the acid constituent which is used to form the urea salt under stirring, at any convenient temperature, e.g, room temperature (20 0 C, 60 0 F) and thereafter the surfactants are added, and ultimately the remaining constituents including fragrance, and any remaining balance of water needed 100%wt. of the compositions.
  • compositions of the present invention can be used as a ready to use 5 composition, supplied in a pour bottle or trigger bottle having a trigger pump spray device, from which it may be dispensed in a ready-to-use form.
  • the compositions of the present invention exhibit good cleaning properties against dirt and stains commonly found-in-household, commercial-and residential settings, particularly in lavatory settings - - — wherein-limescale r soap-seum-stams-and ⁇ nist stains-are frequently-encountered.
  • hard surfaces to which the invention can be applied include surfaces composed of refractory materials such as: glazed and unglazed tile, porcelain, ceramics as well as stone including marble, granite, and other stones surfaces; glass; metals; plastics ⁇ e:g. ⁇ polyester,- vinyl; Fiberglas, Formica®, Corian® and other hard surfaces known to the industry.
  • Hard surfaces which are to be particularly denoted are lavatory fixtures such as
  • shower ⁇ stalls, bathtubs and ⁇ bathing ⁇ ppliances ⁇ racks, shower doorsrshower bars
  • toilets bidets
  • wall and flooring surfaces especially those which include refractory materials and the like.
  • Further hard surfaces which are to be denoted include painted surfaces and those associated with kitchen environments and other environments associated with food preparation, including cabinets and countertop surfaces as well as walls and floor
  • compositions are particularly useful in the cleaning and maintenance of hard surfaces and articles upon which limescale, soap scum stains and rust stains are prone to form or collect.
  • Such further diluted cleaning compositions may be easily prepared by diluting measured amounts of the compositions in further amounts of water by the consumer or other end user in certain weight ratios of composition:water, and optionally, agitating the same to ensure even distribution of the composition in the water.
  • the aqueous compositions according to the invention may be used without further dilution, but may also be used with a further aqueous dilution, i.e., in composition:water concentrations of 1 :0, to extremely dilute dilutions such as 1:10,000.
  • compositions in order to ensure disinfection the compositions should be used "as is", that is to say without further dilution.
  • aqueous dilutions i.e., composition:water of concentrations of 1:1-10 may provide good cleaning efficacy, but may require longer contact times in order to provide a satisfactory cleaning effect.
  • the actual dilution selected is in part determinable by the degree and amount of dirt and grime to be removed from a surface(s), the amount of mechanical force imparted to remove the same, as well as the observed efficacy of a particular dilution. Generally better results and faster removal is to be expected at lower relative dilutions of the composition and the water, with the best results expected when the inventive compositions are used without further dilution with water.
  • composition of the present invention can also be applied to a hard surface by using a wet wipe.
  • the wipe can be of a woven or non- woven nature.
  • Fabric substrates can include nonwoven or woven pouches, sponges, in the form of abrasive or non-abrasive cleaning pads. Such fabrics are known commercially in this field, and are often referred to as wipes.
  • Such substrates can be resin bonded, hydroentanged, thermally bonded, meltblown, needlepunched or any combination of the former.
  • the nonwoven fabrics may be a combination of wood pulp fibers and textile length synthetic fibers formed by well known dry- form or wet-lay processes. Synthetic fibers such as rayon, nylon, orlon and polyester as well as blends thereof can be employed.
  • the wood pulp fibers should comprise about 30 to about 60 percent by weight of the nonwoven fabric, preferably about 55 to about 60 percent by weight, the remainder being synthetic fibers.
  • the wood pulp fibers provide for absorbency, abrasion and soil retention whereas the synthetic fibers provide for substrate strength and resiliency.
  • the substrate of the wipe may also be a film forming material such as a water soluble polymer. Such self-supporting film substrates may be sandwiched between layers of fabric substrates and heat sealed to form a useful substrate.
  • the free standing films can be extruded utilizing standard equipment to devolatilize the blend. Casting technology can be used to form and dry films, or a liquid blend can be saturated into a carrier and then dried in a variety of known methods.
  • compositions of the present invention are absorbed onto the wipe to form a saturated wipe.
  • the wipe can-then be sealed individually in a pouch which can then be
  • compositions of the invention were readily pourable, and retained well mixed characteristics - (i.e., stable_mixtures)_upon.standing_for_extend periods.
  • Particularly preferred compositions of the invention demonstrated.go.od stability under accelerated ageing testing as described previously.
  • compositions were evaluated for their cleaning performance on various soils and stains, as well as for storage stability under accelerated ageing conditions as well as freeze/thaw stability.
  • the performance of known art compositions were also evaluated in certain tests for purposes of comparison.
  • the parent soil was produced according to the following steps: First, the bar soap was shaved into a suitable beaker, after the remaining constituents, were added in the order given above and stirred with three-blade propeller mixer. Next, the contents of the beaker was heated to 45-5O 0 C and mixed using a motorized three-blade propeller mixer until a smooth, lump-free suspension is achieved. This usually required about two hours with moderate agitation. Subsequently, the contents of the beaker were filtered through a Buchner funnel fitted with Whatman #1 filter paper or equivalent. The filtrate was then resuspended in clean, deionized water, using the same amount of water used to make the soil, and this was filtered again.
  • the (re-filtered) filtrate was uniformly dried overnight at 45°C to form a filter cake. Thereafter, the filter cake was pulverized and was suitable for immediate use, or may be stored in a sealed container for up to six months. As test substrates, 4 1 A inch by 4 1 A inch black ceramic bathroom tiles were used.
  • test soil was prepared based on the following formulation:
  • the test soil was produced according to the following steps: The constituents indicated were introduced into a clean beaker, with the acetone being added prior to the water, and the 'parent' soil being added last. The contents of the beaker were mixed using a standard three blade laboratory mixed until the contents formed a uniform mixture, and the color changed from white to gray. This typically required 20-40 minutes, during which time the beaker should have been covered as much as possible to avoid excessive solvent loss. Next, a suitable quantity of the contents of the test soil from the beaker were provided to an artist's airbrush while the beaker was swirled to ensure a soil uniformity.
  • the dried tested tile was then evaluated using a Tri-Gloss meter at 60 degrees, and 16 readings were taken at randomly selected points of the cleaned surface in order to determine surface reflectance. According to the reflective means, the percentage of soap scum removal from each tile was determined utilizing the following equation:
  • compositions according to the present invention exhibited soap scum removal ⁇ fficacy comparable to or superior to tested commercially available cleaning products.
  • Table 1 were evaluated, as well that of several commercially available consumer products which were used as comparative examples.
  • test substrates 4 1 A inch by 4 1 A inch black ceramic bathroom tiles were used. Each of the tiles was thoroughly washed (using a commercially available hand dishwashing detergent) and rinsed, then washed with isopropyl alcohol. The washed tiles were then permitted to dry overnight at room temperature.
  • a number of clean, dry tiles was placed into rows and columns on a flat surface in preparation for depositing of the test soil.
  • An airbrush was operated at approximately 40 psi, and Solution B was sprayed onto the surface of the tiles to form a uniform coating.
  • These tiles were immediately dried by applying a stream of heated air from the laboratory blow dryer and drying continued until white spots were visible on the surface of the tiles.
  • Solution A was sprayed onto the surface of the tiles to form a uniform coating on the layer of dried material deposited by Solution B.
  • the tiles were dried by applying a stream of heated air from the laboratory blow dryer, and thereafter each tile was rinsed for a few seconds in a stream of room temperature deionized water. The surface water on the rinsed tiles was then dried by use of a laboratory blow dryer, and thereafter each tile was allowed to dry for 24 hours at room temperature.
  • the dried tested tile was then evaluated using a Tri-Gloss meter at 60 degrees, and 16 readings were taken at randomly selected points of the cleaned surface in order to determine surface reflectance. According to the reflective means, the percentage of soap scum removal from each tile was determined utilizing the following equation:
  • compositions according to the present invention exhibited hard water stain removal efficacy comparable to the tested commercially available cleaning products.
  • Natural marble cubes (3/4 inch x 3/4 inch x 3/8 inch) were thoroughly rinsed with deionized water, then dried at 105°C for one hour and then allowed to cool to room temperature. Each of the dried marble cubes was weighed on an analytical balance, and the initial mass was recorded. For each tested composition or product, a 40 gram aliquot was provide to a clean laboratory jar. A pre- weighed, dried marble cube was immersed for 60 seconds, then removed an immediately rinsed in a stream of room temperature deionized water for 30 seconds. The treated and rinsed marble cube was then dried at 105°C for one hour, allowed to cool to room temperature and then reweighed in order to evaluate the amount of mass lost. For each tested product or composition, five replicates (cubes) were used and the averaged result for the five replicates used to evaluate limescale efficacy for each particular composition or product was calculate, and is reported on the following table.
  • inventive compositions provided comparable performance, and in some cases superior performance to other commercially available consumer cleaning products with respect to limescale removal efficacy.
  • compositions were evaluated for their efficacy in the removal of rust stains from hard surfaces generally in accordance with the following protocol.
  • a standardized test soil was prepared by combining 98%wt. deionized water at room temperature with 2% ferric chloride which was mixed until a uniform soil composition was formed.
  • the white surfaces of the tiles were cleaned with isopropanol and dried overnight at room temperature.
  • the reflectance reading of each of the tiles was evaluated using a Minolta
  • the dried tiles were placed on a flat surface, and using a fine mist sprayer an even coating of the uniform soil composition was applied to the exposed surfaces of the tile.
  • a stream of heated air provided by a laboratory grade blow dryer was passed over the coated surfaces until a light brown color was observed on each of the tiles.
  • a 1% NaOH aqueous solution was applied to the dried tile surfaces using a fine mist sprayer and again, thereafter the tile surfaces were dried by using the laboratory grade blow dryer as noted above.
  • the tiles were then allowed to cool to the touch, and then each was rinsed under a stream of tap water and then again dried by using the laboratory grade blow dryer as noted above.
  • each of the prepared, soiled tiles was again evaluated To evaluate rust removal efficacy, 2 grams of each test composition was applied by pipetting to the soiled surface of a tile, and allowed to stand for 10 minutes. Thereafter the tile was rinsed in a stream of cold tap water for 10 15 seconds, then the tile was placed in a Gardner Abrasion Tester and secured. A moistened sponge was placed in the holder of the Tester, and the device was cycled once.
  • compositions according to the present invention provided superior rust removal performance to known art, commercially available cleaning products.
  • the sponge (water dampened) of a Gardner Abrasion Tester apparatus was squirted with a 15 gram sample of a tested cleaning composition, and the apparatus was cycled 10 times. The test was replicated 2 times for each tested composition. The tiles were dried, and then the cleaning efficacy was evaluated.
  • compositions according to the present invention provided comparable or superior cleaning performance to known art, commercially available cleaning products.
  • Samples of the tested compositions were evaluated visually for color, as well as for UV absorption within the wavelength spectrum of 800 nm - 190 nm.
  • compositions according to the present invention exhibited superior lightfastness to the prior art, commercially available composition tested.
  • compositions according to E85 and E89 were evaluated for their storage stability at elevated temperatures generally in accordance with the following protocol. Samples of each formulation were held at 12O 0 F for 4 weeks, and further samples of E85 and E89 were held at 105 0 F for 6 weeks. All the samples remained homogenous and are judged to exhibit good long term storage stability.

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Abstract

L’invention porte sur des compositions aqueuses de nettoyage de surface dure acides comprenant des sels d’urée, de préférence un ou plusieurs sels d’urée formés in situ dans la composition de nettoyage, un ou plusieurs tensioactifs détersifs et éventuellement un ou plusieurs autres éléments constitutifs comme des solvants organiques.
PCT/GB2005/002797 2004-08-06 2005-07-19 Compositions de nettoyage de surface dure acides WO2006013319A1 (fr)

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WO2017007416A1 (fr) * 2015-07-07 2017-01-12 Delaval Holding Ab Détergent acide
WO2017174959A1 (fr) * 2016-04-08 2017-10-12 Reckitt Benckiser Llc Compositions acides aqueuses épaissies pulvérisables
US9932255B2 (en) 2015-06-30 2018-04-03 Ecolab Usa Inc. Metal silicate and organic deposit inhibitor/dispersant for thermal recovery operations of hydrocarbon fuels
US10035949B2 (en) 2015-08-18 2018-07-31 Ecolab Usa Inc. Fluoro-inorganics for well cleaning and rejuvenation
US20210291235A1 (en) * 2020-03-19 2021-09-23 Nch Corporation Composition, System, and Method for Automatic Dosing of a Urinal Cleaner
US11407963B1 (en) 2020-11-17 2022-08-09 Biocide Solutions, LLC Cleaning and disinfectant composition

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US7998278B2 (en) * 2006-08-21 2011-08-16 Ecolab Usa Inc. Acidic composition based on surfactant blend
FR2965817B1 (fr) * 2010-10-07 2012-11-30 Barnabe Wayser Produit liquide a base de chlorhydrate d'uree pour l'elimination de sels de calcium insolubles.

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US4673522A (en) * 1981-11-05 1987-06-16 Union Oil Company Of California Methods for removing obstructions from conduits with urea-sulfuric acid compositions
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9932255B2 (en) 2015-06-30 2018-04-03 Ecolab Usa Inc. Metal silicate and organic deposit inhibitor/dispersant for thermal recovery operations of hydrocarbon fuels
WO2017007416A1 (fr) * 2015-07-07 2017-01-12 Delaval Holding Ab Détergent acide
CN107849498A (zh) * 2015-07-07 2018-03-27 利拉伐控股有限公司 酸性洗涤剂
US10035949B2 (en) 2015-08-18 2018-07-31 Ecolab Usa Inc. Fluoro-inorganics for well cleaning and rejuvenation
WO2017174959A1 (fr) * 2016-04-08 2017-10-12 Reckitt Benckiser Llc Compositions acides aqueuses épaissies pulvérisables
US20210291235A1 (en) * 2020-03-19 2021-09-23 Nch Corporation Composition, System, and Method for Automatic Dosing of a Urinal Cleaner
US11897008B2 (en) * 2020-03-19 2024-02-13 Nch Corporation Composition, system, and method for automatic dosing of a urinal cleaner
US11407963B1 (en) 2020-11-17 2022-08-09 Biocide Solutions, LLC Cleaning and disinfectant composition

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