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
  • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
• • 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
  • C11D3/2003—Alcohols; Phenols
  • C11D3/2006—Monohydric alcohols
  • C11D3/2037—Terpenes
• • 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
  • C11D3/22—Carbohydrates or derivatives thereof
  • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
  • C11D3/225—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin etherified, e.g. CMC
• • 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
  • C11D3/37—Polymers
  • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • C11D3/3726—Polyurethanes
• • 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
  • C11D3/37—Polymers
  • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
  • C11D3/3765—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in liquid compositions
• • 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
  • C11D1/75—Amino oxides
• • 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
  • C11D3/34—Organic compounds containing sulfur
  • C11D3/3418—Toluene -, xylene -, cumene -, benzene - or naphthalene sulfonates or sulfates

Definitions

• the invention relates to liquid dishwashing detergent compositions.
• the compositions have antibacterial properties.
• Liquid dishwashing compositions are much desired by consumers and can be used neat or diluted.
• a composition In diluted mode, a composition is diluted in water to form a wash liquor in which the dishes to be cleaned are immersed.
• neat mode a composition is directly applied neat onto dishes, and in this mode a dish implement is often use. Specifically, the composition is applied onto the implement, usually a sponge or a dishcloth, which is in turn contacted with the dishes to be cleaned.
• dish implements are left humid most of the time, and so they provide a good medium for bacterial growth.
• the contaminated implement which is used to clean dishes will in turn contaminate those dishes.
• dishwashing compositions can fulfil the further purpose of reducing or eliminating bacterial growth on dish implements.
• an aqueous liquid dishwashing composition comprises:
• a method of washing dishes comprises contacting the dishes to be washed with an effective amount of a composition as described above, the composition optionally being in diluted form.
• an amphiphilic polymer as described above in a composition comprising a surfactant, a hydrotope and a terpene alcohol, as described above, enhances the anti-bacterial efficacy of that composition.
• Such polymers may also enhance the anti-bacterial efficiency of other detergent compositions.
• aqueous liquid dishwashing composition results from synergy between the hydrotope, the terpene alcohol and the amphiphilic polymer. Results are particularly beneficial in compositions comprising less than 25% by weight of the total composition of surfactant, or detergent-active material.
• compositions of the invention are aqueous liquid compositions. They typically comprise from 30% to 90% by weight of the total composition of water, preferably 40% to 85% by weight, more preferably 40 to 70% by weight.
• compositions typically have a viscosity of from 5 cps to 2000 cps, preferably 5 cps to 400 cps, more preferably 5 cps to 350 cps, most preferably 100 to 350 cps, as measured with a Brookfield Viscometer, with a No. 18 spindle, at 20°C.
• compositions of the present invention comprise, as an essential ingredient, a surfactant.
• a surfactant for instance, one or several of the following surfactants may be used:
• alkyl alkoxylated sulfates with lower values for n, on an equal weight basis, typically when n is below 1.0, improves the performance of the composition with regard to grease removal and sudsing due to the corresponding increase in moles of anionic, but results in an increase in the total amount of unalkoxylated alkyl sulphate, and this seems to make the low temperature instability issue more acute.
• the resulting average n value of the alkyl alkoxylated sulfate in the composition will be the weighted molar average n value of the individual n values of the different alkyl alkoxylated sulfates used in the composition.
• the average n value is less than 0.5, the stimulus to skin increases and this is not desirable. On the other hand, if the average n value is more than 3, the detergency deteriorates.
• the suitable alkyl alkoxylated sulfates can be straight chain or branched materials.
• branched material it is meant that R 1 is branched, while the position of the branching, and the length of the branched group is as determined by the position of the -CH 2 OH functional group in the parent alcohol.
• An increase in the proportion of branched material can improve the physical stability of the composition at low temperature.
• the branched alkyl alkoxylated sulfate material should not represent more than 60%, by weight, of the total alkyl alkoxylated sulfate (branched plus linear), otherwise the sudsing performance of the product deteriorates unacceptably.
• branched alkyl alkoxylated sulfates should be present in amounts of up to 60%, preferably from 10% to 55%, most preferably 10% to 50%.
• Alkyl alkoxylated sulfates are commercially available with a variety of chain lengths, degrees of alkoxylation and degrees of branching under the trade names Empicol® ESA 70 (AE1S) or Empicol® ESB 70 (AE2S) by Albright & Wilson, with C12/14 carbon chain length distribution derived from natural alcohols and are 100% linear, Empimin® KSL68/A (AE1S) and Empimin® KSN70/LA (AE3S) by Albright & Wilson with C12/13 chain length distribution and about 60% branching, Dobanol® 23 ethoxylated sulphates from Shell with C12/13 chain length distribution and about 18% branching, Lial® 123 ethoxylated sulphates from Condea Augusta with C12/13 chain length distribution and about 60% branching, and Isalchem® 123 alkoxylated sulphates with C12/13 chain length distribution and about 95% branching.
• Empicol® ESA 70 AE
• suitable alkyl alkoxylated sulfates can be prepared by alkoxylating and sulfating the appropriate alcohols, as described in "Surfactants in Consumer Products" by J.Falbe and "Fatty oxo-alcohols: Relation between their alkyl chain structure and the performance of the derived AE,AS,AES” submitted to the 4th World Surfactants, Barcelona, 3-7 VI 1996 Congress by Condea Augusta.
• Commercial oxo-alcohols are a mixture of primary alcohols containing several isomers and homologues. Industrial processes allow one to separate these isomers hence resulting in alcohols with linear isomer content ranging from 5-10% to up to 95%.
• Examples of available alcohols for alkoxylation and sulfation are Lial® alcohols by Condea Augusta (60% branched), Isalchem® alcohols by Condea Augusta (95% branched), Dobanol® alcohols by Shell (18% linear).
• Suitable co-surfactants for use in the compositions of the present invention are:
• ethylene oxide condensates suitable as suds stabilizers are the condensation products of aliphatic alcohols with ethylene oxide.
• the alkyl chain of the aliphatic alcohol can either be straight or branched and generally contains from about 8 to about 18, preferably from about 8 to about 14, carbon atoms for best performance as suds stabilizers, the ethylene oxide being present in amounts from about 8 moles to about 30, preferably from about 8 to about 14 moles of ethylene oxide per mole of alcohol.
• compositions of the present invention typically comprise from 10% to 60% by weight of the total composition of a surfactant, or mixtures thereof, preferably from 10% to 55% by weight, most preferably from 20% to 55% by weight.
• compositions of the present invention comprise a hydrotrope.
• Suitable hydrotopes include those selected from salts of cumene sulfonate, toluene sulfonate, xylene sulfonate, and benzene sulfonate, and mixtures thereof.
• Preferred salts are ammonium and sodium salts, especially salts of cumene sulfonate, with sodium cumene sulfonate being most preferred.
• Other suitable hydrotopes are di-acids, such as glutaric acid, succinic acid, adipic acid, and commercially available di-acids, for instance as supplied by Westvaco, and mixtures thereof.
• compositions of the present invention typically comprise from 1% to 15% by weight of the total composition of a hydrotrope, preferably 1% to 10% by weight, preferably 2% to 8% by weight, most preferably 4 to 7% by weight.
• the compositions of the present invention comprise an unsaturated aliphatic terpene alcohol or a derivate thereof (i.e unsaturated aliphatic terpene alcohols where the alcohol group is functionalized, e.g. into acetate, formate, propionate, or the like), or mixtures thereof.
• Suitable alcohols include geraniol, nerol, citronellol, linalool, citronellyl acetate, geranyl acetate, linalyl acetate, citronellyl formate, geranyl formate, linalyl formate, citronellyl propionate, geranyl propionate, linalyl propionate, and mixtures thereof.
• Geraniol is preferred.
• compositions of the present invention typically comprise from 0.1% to 3% by weight of the total composition of an unsaturated aliphatic terpene alcohol, preferably 0.2% to 2.5% by weight, more preferably 0.3% to 2% by weight, most preferably 0.4 to 1% by weight.
• the compositions of the present invention comprise an amphiphilic polymer, i.e. a polymer comprising both a hydrophobic portion, or group, and a hydrophilic portion, or group.
• the polymer may be a naturally-occurring polymer; a hydrophobically-modified polymer, by which we mean a polymer which has been modified by incorporation thereinto of a hydrophobic group; a polymer which has been made by free radical polymerisation; a polymer which has been made by condensation reaction, i.e. a polycondensate; and mixtures thereof.
• the polymer may be non-ionic or ionic in nature, and is preferably non-ionic or anionic.
• the polymer is preferably water-soluble or water-dispersible, so that it is compatible with the surfactant systems used in the compositions of the present invention.
• polymers which swell in water, for instance due to cross-linking may also be used.
• the hydrophobic portion, or group, included in the amphiphilic polymer will depend upon the nature of the polymer, and the nature of the hydrophilic portion, or group, thereof.
• the hydrophobic portion, or group comprises from 1 to 30 carbon atoms, preferably 2 to 30 carbon atoms and more preferably 2 to 20 carbon atoms.
• the hydrophobic group is selected from straight or branched chain alkyl groups, aryl groups, alkaryl groups, aralkyl groups, and mixtures thereof which are optionally substituted.
• the hydrophobic group is an alkyl group.
• Naturally-derived polymers suitable for use in the present invention include cellulose ethers comprising hydrophobic groups, which are typically alkyl groups comprising 1 to 20 carbon atoms, preferably 2 to 10 carbon atoms.
• cellulose ethers comprising hydrophobic groups, which are typically alkyl groups comprising 1 to 20 carbon atoms, preferably 2 to 10 carbon atoms.
• Especially preferred polymers are the hydroxyalkyl alkylcelluloses, such as hydroxyethyl methylcellulose (HEMC), hydroxypropyl methylcellulose (HPMC), hydroxybutyl methylcellulose (HBMC), and the corresponding ethyl- and propylcelluloses.
• the preferred polymers of the free radical-type are vinyl or acrylic polymers and copolymers. Particularly preferred are anionic, acrylic polymers and copolymers, typically provided in aqueous dispersion form and referred to as HASE (hydrophobically-modified alkali-soluble or swellable emulsions).
• HASE hydrophobically-modified alkali-soluble or swellable emulsions.
• the polymers may be partially cross-linked.
• such polymers are terpolymers formed from a monomer comprising a carboxylic acid group, e.g. acrylic or methacrylic acid, a relatively water-insoluble monomer such as C 1-4 acrylate or methacrylate, and a monomer comprising a hydrophobic group, optionally attached through an ether, ester, polyethoxy, amide, carbamate or urea linkage.
• a monomer comprising a carboxylic acid group e.g. acrylic or methacrylic acid
• a relatively water-insoluble monomer such as C 1-4 acrylate or methacrylate
• a monomer comprising a hydrophobic group optionally attached through an ether, ester, polyethoxy, amide, carbamate or urea linkage.
• Examples of polymers of this type are described in Shay, Surface Coatings International (1993) 11 :446-453, US-A-4384096, US-A-4421902, US-A-4423199 and US-A
• polymers of the free radical-type that may be useful in the compositions of the present invention include:
• Suitable polycondensates which may be used in the compositions of the present invention include, for instance, associative polymers, and in particular associative polyurethanes.
• Such polymers are typically non-ionic, and include sequences of a hydrophilic nature, typically of polyoxyethylene, and sequences of a hydrophobic nature, which may include aliphatic and/or aromatic units. Specific examples of such polymers are described by Zeying Ma, J. Appl. Polymer Sci., (1993) 49 : 1509-27.
• compositions of the present invention typically comprise 0.1 to 10% by weight, preferably 0.2 to 5% by weight, more preferably 0.5 to 3% by weight, most preferably 0.5 to 2% by weight, of the total composition, of an amphiphilic polymer.
• compositions of the present invention can comprise a number of other, optional ingredients, as follows:
• a first optional, but preferred, ingredient is a phenolic compound having the formula: wherein R, R 1 , R 2 , R 3 , R 4 are independently H; a linear or branched, saturated or unsaturated hydrocarbon group having from 1 to 20 carbon atoms, preferably from 1 to 10, more preferably from 1 to 4, an alkoxylated hydrocarbon chain according to the formula R a (A) n wherein R a is a linear or branched, saturated or unsaturated hydrocarbon chain having from 1 to 20 carbon atoms, preferably from 1 to 10 carbon atoms, more preferably from 1 to 4 carbon atoms; A is butoxy, propoxy and/or ethoxy, or an aryl chain having from 1 to 20 carbon atoms, preferably from 1 to 10 carbon atoms, more preferably from 1 to 4 carbon atoms, or mixtures thereof; and n is an integer of 1 to 4, preferably from 1 to 3. Highly preferred from that class of ingredients are eugenol and thymol, and mixtures
• compositions of the present invention can comprise from 0.1% to 4%, preferably from 0.2% to 1.5% by weight of the total composition of such a phenolic compound, or mixtures thereof.
• Another optional component comprises magnesium ions, which may be added to the liquid detergent compositions of the invention for improved product stability, as well as improved sudsing and skin mildness.
• compositions of the present invention typically comprise from 0% to 2.0%, preferably 0.1% to 1.5%, most preferably from 0.2% to 1%, by weight of the composition, of magnesium ions.
• the magnesium ions are introduced by neutralization of the acid form of alkylethoxy surfactants with a magnesium oxide or magnesium hydroxide slurry in water. Normally, this method is limited by the amount of anionic surfactant in the composition.
• An alternative method is to use MgCl 2 , MgSO 4 or other inorganic Mg salts. These materials are less desirable because they can cause corrosivity problems (chloride salts), decrease the solubility of the compositions, or cause formulatibility/stability problems in the compositions. It is desirable for these reasons to limit the addition of inorganic salts to less than 2%, preferably less than 1%, by weight of the anionic inorganic counterion.
• Another optional component comprises an anti-gelling polymer, which improves the compositions' resistance to gelling.
• Suitable polymers for this purpose have a molecular weight of at least 500, preferably from 500 to 20000, more preferably 1000 to 5000, most preferably 1000 to 3000.
• compositions of the present invention comprise from 0.5% to 6% by weight of the total composition of an anti-gelling polymer, or mixtures thereof, preferably 0.5% to 4% by weight, most preferably 1.5% to 3% by weight.
• Suitable polymers include:
• Preferred polymers for use herein are polymers of the formula: in which X can be any suitable capping group, with each X being selected from the group consisting of H, and alkyl or acyl groups containing from 1 to about 4 carbon atoms, preferably 1 to 2 carbon atoms, most preferably alkyl.
• the alkyl group may contain anionic, cationic or nonionic substituents such as sulfonate, sulfate, ammonium, hydroxy groups, etc n is selected for water solubility, and has a range of values which generally averages from about 10 to about 50, preferably from about 10 to about 25.
• the R 1 moieties are essentially 1,4-phenylene moieties.
• the term "the R 1 moieties are essentially 1,4-phenylene moieties” refers to compounds where the R 1 moieties consist entirely of 1,4-phenylene moieties, or are partially substituted with other arylene or alkarylene moieties, alkylene moieties, alkenylene moieties, or mixtures thereof.
• Arylene and alkarylene moieties which can be partially substituted for 1,4-phenylene include 1,3-phenylene, 1,2-phenylene, 1,8-naphthylene, 1,4-naphthylene, 2,2-biphenylene, 4,4'-biphenylene and mixtures thereof.
• Alkylene and alkenylene moieties which can be partially substituted include ethylene, 1,2-propylene, 1,4-butylene, 1,5-pentylene, 1,6-hexamethylene, 1,7-heptamethylene, 1,8-octamethylene, 1,4-cyclohexylene, and mixtures thereof.
• the R 1 moieties consist entirely of (i.e., comprise 100%) 1,4-phenylene moieties, i.e. each R 1 moiety is 1,4-phenylene.
• suitable ethylene or substituted ethylene moieties include ethylene, 1,2-propylene, 1,2-butylene, 1,2-hexylene, 3-methoxy-1,2-propylene and mixtures thereof.
• the R 2 moieties are essentially ethylene moieties, or, preferably, 1,2-propylene moieties or mixtures thereof.
• from about 75% to about 100%, more preferably from about 90% to about 100% of the R 2 moieties are 1,2-propylene moieties.
• n averages at least about 10, but a distribution of n values is present.
• the value of each n usually ranges from about 10 to about 50.
• the value for each n averages in the range of from about 10 to about 25.
• the most preferred polymers are those having the formula: wherein X is methyl, n is 16, R 1 is 1,4-phenylene moiety, R 2 is 1,2-propylene moiety and u is essentially between 3 and 5.
• compositions of the invention can comprise a solvent in an effective amount so as to reach the desired viscosity.
• Suitable solvents for use herein include low molecular weight alcohols such as C 1 -C 10 , preferably C 1 -C 4 mono- and dihydric alcohols, preferably ethyl alcohol, isopropyl alcohol, propylene glycol and hexylene glycol.
• low molecular weight alcohols such as C 1 -C 10 , preferably C 1 -C 4 mono- and dihydric alcohols, preferably ethyl alcohol, isopropyl alcohol, propylene glycol and hexylene glycol.
• compositions of the invention typically comprise from 3% to 20% by weight of the total composition of an alcohol, or mixtures thereof, preferably 3% to 15% by weight, most preferably 5% to 10% by weight.
• compositions of the invention are formulated as clear liquid.
• clear it is meant isotropic, stable and transparent.
• solvents and hydrotropes are well known to those familiar with the art of dishwashing formulations.
• Those clear compositions are preferably packaged in transparent containers, which can typically be made out of plastic or glass.
• compositions can contain other optional components suitable for use in liquid dishwashing compositions such as anti-oxidants, perfumes, dyes, pacifiers, enzymes, builders and chelants, and pH buffering means so that the compositions herein generally have a pH of from 5 to 11, preferably 6.0 to 10.0, most preferably 7 to 9, measured at a 10% solution in water.
• optional components suitable for use in liquid dishwashing compositions such as anti-oxidants, perfumes, dyes, pacifiers, enzymes, builders and chelants, and pH buffering means so that the compositions herein generally have a pH of from 5 to 11, preferably 6.0 to 10.0, most preferably 7 to 9, measured at a 10% solution in water.
• soiled dishes are contacted with an effective amount, typically from about 0.5 ml. to about 20 ml. (per 25 dishes being treated), preferably from about 3 ml. to about 10 ml., of a detergent composition of the present invention.
• an effective amount typically from about 0.5 ml. to about 20 ml. (per 25 dishes being treated), preferably from about 3 ml. to about 10 ml., of a detergent composition of the present invention.
• the actual amount of liquid detergent composition used will be based on the judgement of user, and will typically depend upon factors such as the particular product formulation of the composition, including the concentration of active ingredients in the composition, the number of soiled dishes to be cleaned, the degree of soiling on the dishes, and the like.
• the soiled dishes are preferably immersed into a water bath with or without a liquid dishwashing detergent as described herein.
• a dish implement i.e. a device suitable for accepting, typically for absorbing, a liquid dishwashing detergent such as a sponge or a dishcloth, is placed directly onto or contacted with a separate quantity of undiluted liquid dishwashing composition as described herein for a period of time typically ranging from about 3 to about 10 seconds.
• the dish implement, and consequently the undiluted liquid dishwashing composition is then contacted with the surface of each of the soiled dishes to remove said soiling.
• the dish implement is typically contacted with each dish surface for a period of time ranging from about 5 to abort 30 seconds, although the actual time of application will be dependent upon factors such as the degree of soiling of the dish.
• the contacting of the dish implement to the dish surface is preferably accompanied by concurrent scrubbing.
• the dish implement is preferably contacted, e.g. soaked, with neat product and left to dry.
• contaminated dish implements i.e dish implements contaminated by previous uses with other compositions
• compositions Two aqueous liquid dishwashing compositions were prepared having the following formulations: Composition 1 Composition 2 Na AE0.6S 12.52 12.52 Amide Oxide 0.83 0.83 Betaine 0.83 0.83 Glucose Amide 0.65 0.65 Nonionic (C10E8) 2.18 2.18 Citric Acid 0.125 0.125 Glutaraldehyde 0.03 0.03 Sodium Cumene Sulfonate 6 6 Geraniol 0.6 0.6 Acusol 820 1.25 - Hydroxypropyl methylcellulose (HPMC) - 0.44 Sodium Chloride - - Magnesium Sulphate - - Sparkle 0.32 0.32 Butylated Hydroxy Toluene 0.02 0.02 0.5% FD&C Blue No. 1 0.18 0.18 Water to 100% to 100% Viscosity (cps) 200 200 pH (10% solution) 7.1 7.8
• the anti-bacterial activity of the above two compositions was measured using a quantitative suspension test in accordance with European Standard CEN 1276 with 2 minute contact time, utilising the Gram-Negative species Escherichia coli and Pseudomonas aeruginosa .
• the results obtained were compared with those obtained from a Control composition having the same base formulation as Compositions 1 and 2, but containing neither Acusol 820 nor HPMC.
• the results are given in Table 1 below, as averages over 12 repetitions done on each composition.
• Control Composition 1 Composition 2 Log Reduction 3.5 5.6 5.0
• Compositions 1 and 2 above are those which include sodium cumene sulfonate in an amount of 5 to 6% by weight, geraniol in an amount of 0.4 to 0.6% by weight, Acusol 820 in an amount of 1 to 1.25% by weight or HPMC in an amount of 0.4 to 0.6% by weight, and each of sodium chloride and magnesium sulfate in an amount of 0 to 2% by weight, based on the weight of the total composition.

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• 1997
  • 1997-11-17 EP EP97870184A patent/EP0916720A1/en not_active Withdrawn
• 1998
  • 1998-11-13 AU AU97569/98A patent/AU9756998A/en not_active Abandoned
  • 1998-11-13 JP JP2000521169A patent/JP2001523755A/ja not_active Withdrawn
  • 1998-11-13 EP EP98951621A patent/EP1032630A1/en not_active Withdrawn
  • 1998-11-13 WO PCT/IB1998/001805 patent/WO1999025800A1/en not_active Application Discontinuation
  • 1998-11-17 AR ARP980105831 patent/AR017410A1/es unknown

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