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WO2024156450A1 - Composition de nettoyage pour réduire les mauvaises odeurs - Google Patents

Composition de nettoyage pour réduire les mauvaises odeurs Download PDF

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Publication number
WO2024156450A1
WO2024156450A1 PCT/EP2023/087220 EP2023087220W WO2024156450A1 WO 2024156450 A1 WO2024156450 A1 WO 2024156450A1 EP 2023087220 W EP2023087220 W EP 2023087220W WO 2024156450 A1 WO2024156450 A1 WO 2024156450A1
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WO
WIPO (PCT)
Prior art keywords
composition
pectin
alkyl
pectins
fabric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2023/087220
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English (en)
Inventor
Samiran Mahapatra
Srilaxmi Venkata Medepalli
Ramya SAMPATH KUMAR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever Global IP Ltd
Unilever IP Holdings BV
Conopco Inc
Original Assignee
Unilever Global IP Ltd
Unilever IP Holdings BV
Conopco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever Global IP Ltd, Unilever IP Holdings BV, Conopco Inc filed Critical Unilever Global IP Ltd
Priority to CN202380092184.6A priority Critical patent/CN120584172A/zh
Priority to EP23838002.6A priority patent/EP4655370A1/fr
Publication of WO2024156450A1 publication Critical patent/WO2024156450A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C11D3/20—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
    • 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
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0068—Deodorant 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
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/268—Carbohydrates or derivatives thereof

Definitions

  • the present invention relates to a cleaning composition for reducing malodours, more particularly to a laundry composition that delivers this benefit.
  • Washing fabrics also known as laundering or simply as laundry, makes up one of the main chores that people undertake routinely. For this, people have been relying on cleaning compositions.
  • a fabric is washed by contacting it with a detergent composition either in neat or diluted form, rinsing the fabric one or more times with water; and finally, drying it.
  • the fabric is cleaned by mechanically agitating it using the hands and/or by using suitable cleaning means e.g. a brush, in so-called hand-wash method.
  • suitable cleaning means e.g. a brush
  • machine-wash method a fabric is cleaned by mechanical agitations carried out by a machine.
  • a step of soaking the fabric, in a neat or diluted detergent composition may be carried out for a desired duration e.g. 30 to 60 minutes.
  • the step of drying may also be carried out by using machines; or simply by exposing the fabric to air, and if possible, under the sun.
  • Drying of the fabric may be carried out in a machine at high temperature (e.g. 50 to 80 °C) with flow of air in which case the step may be carried out for half hour to about two hours. This is considered as fast drying in which case the high temperature ensures quick removal of water and inactivation of residual odour causing microorganisms.
  • Machine drying is energy intensive and is popular only in cold and rainy countries where there is continuous supply of power to run such machines. In hot countries like in the tropical areas with high amount of sunshine the washed fabric is dried in the sun on clotheslines. Such a drying process often taken several hours. Depending on the season e.g.
  • the present inventors in seeking to solve the above problems have hit upon specific type of high methyl esterified pectin which when used in a composition for cleaning fabric, provides for reducing malodour even when it is dried under slow drying conditions, after the cleaning and rinsing steps.
  • the first aspect of the present invention relates to a fabric cleaning composition for reducing malodour comprising
  • Another aspect of the present invention relates to method of reducing malodour from a fabric surface comprising the step of cleaning the surface with a composition of the first aspect, preferably diluted with water.
  • Yet another aspect of the present invention relates to use of the composition of the first aspect for the purpose of minimizing odour from the fabric surface cleaned with said composition.
  • the present invention relates to a cleaning composition preferably a laundry composition for reducing malodour comprising 0.1 to 15 wt% of one or more pectins, wherein the pectins have a degree of methyl esterification of 50% or higher.
  • Pectin is a common polysaccharide found in many plants in nature. Various sources of pectin are available, including apples, citrus peel, gooseberries, quince, pears and plums. Pectin for use in the present invention may be from any of the above sources, more preferably from citrus peel, apple or sugar beet, or mixtures thereof. Pectin consists predominantly of a-D galacturonic acid units, but also contains some amount of neutral sugars such as rhamnose, xylose, arabinose, galactose and glucose.
  • the percentage of galacturonic acid units is therefore the amount of galacturonic acid groups present relative to the total amount of the pectin.
  • the galacturonic acid content of a sample can be determined by methods known in the art, such as for example the Saeman hydrolysis method (Englyst and Cummings (Analyst, 109(7), 937-942 (1984), Filisetti-Cozzi and Carpita (Analytical Biochemistry, 197, 157-162 (1991)).
  • Galacturonic acid typically has the following repeat unit structure:
  • the degree of esterification can be determined according to methods known in the art, such as the base titration method (Shultz, 1965) as proposed by the Food Chemical Codex (FCC (1981). 3rd ed., (1981) National Academy of Science, Washington, DC), quantification of methanol released during de-esterification using gas chromatography (GC) (Walter et al. (1983), Journal of Food Science, 48: 1006-10070), colorimetry (Hou et al.
  • carboxylic groups are typically methylated to varying degrees to provide pectin methyl esters.
  • the number fraction of carboxylic acid groups methylated is known as the degree of methyl esterification.
  • the pectin used in the composition of the present invention has a degree of methyl esterification higher than 50 wt%, more preferably 52.5 wt% or higher, further more preferably 55 wt% or higher, yet more preferably 57.5 wt% or higher and yet further more preferably 60 wt% or higher, and most preferably 62.5wt% or higher.
  • the pectin used according to the invention has a molecular weight of higher than 50kDa, preferably higher than 100kDa, more preferably higher than 150 kDa. Typical upper limits of pectin molecular weights are of the order of 1000kDa, more preferably 800kDa. Thus, the pectin for use in the composition of the invention has a molecular weight of between 50 kDa and 1000kDa.
  • the molecular weight of the pectin used in the present invention is determined using Triple Detection Size Exclusion Chromatography (TD-SEC)
  • the analysis is conducted using the Malvern OMNISEC system.
  • the complete OMNISEC system consists of OMNISEC RESOLVE (chromatography module) and OMNISEC REVEAL (detectors module). Using multi-detector technologies, it combines refractive index, absorbance, light scattering and viscometer detectors to measure concentration, molecular weight and other parameters. The data are analysed using the OMNISEC software.
  • aqueous cndolumns such as the A6000 and A7000 set of columns and the corresponding guard columns are used.
  • routinely used eluents of choice are demineralised water containing 0.02wt% Na azide as the preservative or buffer solutions such as Na or Li nitrate (0.05-0.1M), buffered to the appropriate pH range using NaOH or acetic acid.
  • Polysaccharides with hydrophobic functionality can be analysed using 10-20% MeOH.
  • sample solutions are prepared at 0.5mg/ml and then filtered using 0.45pm Nylon filters prior to dispensing into sample vials.
  • the eluent is filtered using a 0.2 pm Nylon filter.
  • the flow rate throughout all runs is typically at 1 ml/min; the detector and column oven temperatures are set to 40°C.
  • the detector calibration is carried out using a narrow molecular weight standard to calculate the detector offsets, the detector constants for all detectors and the band broadening and tailing corrections.
  • the calibration is performed using a standard of known concentration, molecular weight, dispersity and intrinsic viscosity; in this case the narrow molecular weight standard of choice usually is a Pullulan standard material.
  • a verification standard is also run with every sequence.
  • This standard is usually a broad (polydisperse) standard, whose properties are known and can be measured. This independently verifies that the calculation method has been correctly calibrated.
  • a Dextran 73KDa material is chosen for polysaccharide analyses.
  • a fixed dn/dc method is used to calculate the molecular weight data for all samples assuming a dn/dc of 0.147.
  • composition of the invention is suitable for use in laundry, for example for use in laundering clothes in a washing machine or for laundering clothes by hand in a bowl, bucket or other receptacle.
  • the cleaning composition of the invention may be in the form of a liquid, solid, powder, pastille, bead or paste. Preferably, it is in the form of a liquid.
  • the cleaning composition is a liquid then it may be either aqueous or non-aqueous. Furthermore, if it is non-aqueous it may preferably be in the form a single unit dose product.
  • liquid cleaning compositions of the invention are laundry detergent compositions that include heavy-duty liquid laundry detergents for use in the wash cycle of automatic washing machines, as well as liquid fine wash and liquid colour care detergents such as those suitable for washing delicate garments (e.g. those made of silk or wool) either by hand or in the wash cycle of automatic washing machines.
  • laundry detergent compositions that include heavy-duty liquid laundry detergents for use in the wash cycle of automatic washing machines, as well as liquid fine wash and liquid colour care detergents such as those suitable for washing delicate garments (e.g. those made of silk or wool) either by hand or in the wash cycle of automatic washing machines.
  • composition of the invention comprises pectin, wherein the level of pectin is from 0.1 to 15 wt%, more preferably 0.2 to 12 wt%, more preferably 0.5 to 10 wt%, more preferably 0.7 to 8 wt% and most preferably from 1 to 5 wt%.
  • the cleaning composition of the invention is preferably used for cleaning fabric which may therefore comprise one or more surfactants.
  • the surfactant may be selected from one or more of an anionic, nonionic and amphoteric surfactant.
  • Anionic Surfactant are described in Anionic Surfactants Organic Chemistry (Surfactant Science Series Volume 56) edited By H.W.Stache (Marcel Dekker 1996).
  • the composition comprises from 1 to 80% wt. anionic surfactant based on the total weight of composition.
  • anionic surfactants for use in the invention are typically salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term “alkyl” being used to include the alkyl portion of higher acyl radicals. Examples of such materials include alkyl sulphates, alkyl ether sulphates, alkaryl sulfonates, alphaolefin sulfonates and mixtures thereof.
  • the alkyl radicals preferably contain from 10 to 18 carbon atoms and may be unsaturated.
  • the alkyl ether sulphates may contain from one to ten ethylene oxide or propylene oxide units per molecule, and preferably contain one to three ethylene oxide units per molecule.
  • the counterion for anionic surfactants is generally an alkali metal such as sodium or potassium; or an ammoniacal counterion such as monoethanolamine, (MEA) diethanolamine (DEA) or triethanolamine (TEA). Mixtures of such counterions may also be employed.
  • compositions according to the invention may include alkylbenzene sulfonates, particularly linear alkylbenzene sulfonates (LAS) with an alkyl chain length of from 10 to 18 carbon atoms.
  • LAS linear alkylbenzene sulfonates
  • Commercial LAS is a mixture of closely related isomers and homologues alkyl chain homologues, each containing an aromatic ring sulphonated at the “para" position and attached to a linear alkyl chain at any position except the terminal carbons.
  • the linear alkyl chain typically has a chain length of from 11 to 15 carbon atoms, with the predominant materials having a chain length of about C12.
  • Each alkyl chain homologue consists of a mixture of all the possible sulphophenyl isomers except for the 1 -phenyl isomer.
  • LAS is normally formulated into compositions in acid (i.e. HLAS) form and then at least partially neutralized in-situ.
  • alkyl sulphate surfactant may be used, such as non-ethoxylated primary and secondary alkyl sulphates with an alkyl chain length of from 10 to 18.
  • alkyl ether sulfates having a straight or branched chain alkyl group having 10 to 18, more preferably 12 to 14 carbon 30 atoms and containing an average of 1 to 3EO units per molecule.
  • a preferred example is sodium lauryl ether sulfate (SLES) in which the predominantly C12 lauryl alkyl group has been ethoxylated with an average of 3EO units per molecule.
  • the alkyl ether sulphate may be provided in a single raw material component or by way of a mixture of components.
  • Preferred anionic surfactants also include the C16/18 alkyl ether sulphates.
  • Preferred anionic surfactants also include rhamnolipids. Mixtures of any of the above described materials may also be used.
  • the composition of the invention comprises from 1 to 80% wt. non-ionic surfactant based on the total weight of composition.
  • Suitable non-ionic surfactants include polyoxyalkylene compounds, i.e. the reaction product of alkylene oxides (such as ethylene oxide or propylene oxide or mixtures thereof) with starter molecules having a hydrophobic group and a reactive hydrogen atom which is reactive with the alkylene oxide.
  • Such starter molecules include alcohols, acids, amides or alkyl phenols. Where the starter molecule is an alcohol, the reaction product is known as an alcohol alkoxylate.
  • the polyoxyalkylene compounds can have a variety of block and heteric (random) structures.
  • the blocks can comprise a single block of alkylene oxide, or they can be diblock alkoxylates or triblock alkoxylates.
  • the blocks can be all ethylene oxide or all propylene oxide, or the blocks can contain a heteric mixture of alkylene oxides.
  • examples of such materials include Cs to C22 alkyl phenol ethoxylates with an average of from 5 to 25 moles of ethylene oxide per mole of alkyl phenol; and aliphatic alcohol ethoxylates such as Cs to Cis primary or secondary linear or branched alcohol ethoxylates with an average of from 2 to 40 moles of ethylene oxide per mole of alcohol.
  • a preferred class of additional nonionic surfactant for use in the invention includes aliphatic Cs to Cis, more preferably C12 to C15 primary linear alcohol ethoxylates with an average of from 3 to 20, more preferably from 5 to 10 moles of ethylene oxide per mole of alcohol.
  • the alcohol ethoxylate may be provided in a single raw material component or by way of a mixture of components.
  • a further preferred non-ionic surfactant class are the C is Alcohol ethoxylates.
  • a further preferred non-ionic surfactant class is the methyl ester ethoxylates, wherein the alkyl chain preferably comprises C to C aliphatic hydrocarbons, with an average of from 6 to 14 moles of ethylene oxide per mole of alcohol, more preferably 8 to 12 moles of ethylene oxide per mole of alcohol.
  • a further class of non-ionic surfactants are the alkyl poly glycosides. Mixtures of any of the above described materials may also be used. Preferably, the selection and amount of total surfactant is such that the composition is isotropic in nature.
  • a composition of the invention may contain one or more amphoteric (such as zwitterionic surfactants), preferably wherein if present, the amphoteric surfactant is present at a level of from 0.1 to 15 wt.%, preferably from 0.5 to 10 wt.%, more preferably from 1 to 5 wt.% and is preferably selected from alkyl betaines and the alkyl sulphobetaines (sultaines), more preferably carbobetaines and lauramine oxide.
  • amphoteric such as zwitterionic surfactants
  • amphoteric surfactants include alkyl amine oxides, alkyl amidopropyl betaines, alkyl glycinates, alkyl carboxyglycinates, alkyl amphoacetates, alkyl amphopropionates, alkylamphoglycinates, alkyl amidopropyl hydroxysultaines, acyl taurates and acyl glutamates.
  • the amphoteric surfactant preferably comprises alkyl radicals containing from about 8 to about 22 carbon atoms preferably selected from C12, C14, C16, C18 and C18: 1 , the term “alkyl” being used to include the alkyl portion of higher acyl radicals. Mixtures of any of the above described materials may also be used.
  • a composition of the invention may comprise an effective amount of one or more enzyme preferably selected from the group comprising, peroxidases, proteases, xylanases, xantanase, lipases, phospholipases, esterases, cutinases, carrageenases, mannanases, pectate lyases, keratinases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, p-glucanases, arabinosidases, hyaluronidase, chondroitinase, laccase, tannases, amylases, nucleases (such as deoxyribonuclease and/or ribonuclease), phosphodiesterases.
  • one or more enzyme preferably selected from the group comprising, peroxidases, proteases, xy
  • the composition comprises from 0.05 to 5 wt.%, more preferably from 0.1 to 4 wt.%, more preferably from 0.5 to 3 wt.% of an enzyme.
  • the enzyme is preferably selected from one or more of a protease, amylase, mannanase, lipase, pectate lyase, laccase, phosphodiesterase.
  • Examples of preferred enzymes are sold under the following trade names Purafect Prime®, Purafect®, Preferenz® (IFF), Savinase®, Progress® Uno, Pectawash®, Mannaway®, Lipex ®, Lipoclean ®, Stainzyme®, Stainzyme Plus®, Natalase ®, Mannaway ®, Amplify ® Xpect ®, (Novozymes), Biotouch (AB Enzymes), Lavergy ® (BASF).
  • compositions of the invention preferably comprises from 0.1 to 10 wt.% of a rheology modifier.
  • a composition of the invention may comprise one or more polymeric thickeners.
  • Suitable polymeric thickeners for use in the invention include polymeric gums, polycarboxylate polymers, more preferably polyacrylate polymers, more preferably hydrophobically modified alkali swellable emulsion (HASE) copolymers.
  • HASE copolymers for use in the invention include linear or crosslinked copolymers that are prepared by the addition polymerization of a monomer mixture including at least one acidic vinyl monomer, such as (meth)acrylic acid (i.e. methacrylic acid and/or acrylic acid); and at least one associative monomer.
  • sociative monomer in the context of this invention denotes a monomer having an ethylenically unsaturated section (for addition polymerization with the other monomers in the mixture) and a hydrophobic section.
  • a preferred type of associative monomer includes a polyoxyalkylene section between the ethylenically unsaturated section and the hydrophobic section.
  • Preferred HASE copolymers for use in the invention include linear or crosslinked copolymers that are prepared by the addition polymerization of (meth)acrylic acid with (i) at least one associative monomer selected from linear or branched C8-C40 alkyl (preferably linear C12-C22 alkyl) polyethoxylated (meth)acrylates; and (ii) at least one further monomer selected from C1-C4 alkyl (meth) acrylates, polyacidic vinyl monomers (such as maleic acid, maleic anhydride and/or salts thereof) and mixtures thereof.
  • the polyethoxylated portion of the associative monomer (i) generally comprises about 5 to about 100, preferably about 10 to about 80, and more preferably about 12 to about 60 oxyethylene repeating units.
  • compositions of the invention may have their rheology further modified by use of one or more external structurants which form a structuring network within the composition.
  • external structurants include hydrogenated castor oil, polysaccharides other than the pectin claimed in the first aspect of the invention, microfibrous cellulose and citrus pulp fibre.
  • the presence of an external structurant may provide shear thinning rheology and may also enable materials such as encapsulates and visual cues to be suspended stably in the liquid. Mixtures of the above described materials may also be used.
  • the claimed rheology modifier is preferably selected from polyacrylate polymers, polycarboxylate polymers, hydrogenated castor oil derivatives, polycarboxylate polymers, polysaccharides other than pectin claimed in the first aspect of the present invention, microfibrous cellulose, polymeric gums, and mixtures thereof.
  • compositions of the invention preferably comprise from 0.05 to 8 wt.%, more preferably from 0.1 to 5 wt.%, more preferably from 0.5 to 2 wt.% of a sequestrant.
  • Compositions of the invention may also optionally contain organic detergent builder or sequestrant material. Examples include the alkali metal, citrates, succinates, malonates, carboxymethyl succinates, carboxylates, polycarboxylates and polyacetyl carboxylates. Specific examples include sodium, potassium and lithium salts of oxydisuccinic acid, mellitic acid, benzene polycarboxylic acids, and citric acid. Other examples are DEQUESTTM, organic phosphonate type sequestering agents sold by Monsanto and alkanehydroxy phosphonates.
  • the sequestrant is selected from HEDP (1-Hydroxyethylidene-1 ,1-diphosphonic acid), DTPMP (diethylenetriamine penta(methylene phosphonic acid)), EDTA (ethylenediaminetetraacetic acid) , MGDA (Methylglycinediacetic Acid and Trisodium Salt thereof) , GLDA (glutamic acid N,N-diacetic acid or tetra sodium salt thereof) or citric acid.
  • HEDP 1-Hydroxyethylidene-1 ,1-diphosphonic acid
  • DTPMP diethylenetriamine penta(methylene phosphonic acid)
  • EDTA ethylenediaminetetraacetic acid
  • MGDA Metalglycinediacetic Acid and Trisodium Salt thereof
  • GLDA glutmic acid N,N-diacetic acid or tetra sodium salt thereof
  • fragrance and perfume are used interchangeably.
  • the laundry composition comprises a fragrance, preferably wherein the fragrance is included between 0.001 and 2.0wt%, more preferably 0.01 and 1.5wt% and most preferably 0.1 and 1.0wt%.
  • the fragrance comprises greater than 50wt% biodegradable materials, more preferably greater than 60wt% biodegradable materials, more preferably greater than 70wt% biodegradable materials, more preferably greater than 80wt% biodegradable materials, more preferably greater than 90% biodegradable materials and most preferably the fragrance consists of 100wt% biodegradable materials.
  • the fragrance comprises at least one note (compound) from: alpha-isomethyl ionone, benzyl salicylate; citronellol; coumarin; hexyl cinnamal; linalool; pentanoic acid, 2-methyl-, ethyl ester; octanal; benzyl acetate; 1 ,6-octadien-3-ol, 3,7-dimethyl-, 3-acetate; cyclohexanol, 2-(1 ,1- dimethylethyl)-, 1 -acetate; delta-damascone; beta-ionone; verdyl acetate; dodecanal; hexyl cinnamic aldehyde; cyclopentadecanolide; benzeneacetic acid, 2-phenylethyl ester; amyl salicylate; beta-caryophyllene; ethyl undecylenate;
  • a composition of the invention may contain optional ingredients to enhance performance and I or consumer acceptability.
  • ingredients include anti-foams, fluorescers, shading dyes, preservatives, anti-microbials (e.g. bactericides), foam boosting agents, polyelectrolytes, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, sunscreens, anti-corrosion agents, drape imparting agents, anti-static agents, ironing aids, dyes I colorants, pearlisers and/or opacifiers and microcapsules.
  • these optional ingredients are included individually at an amount of up to 5% (by weight based on the total weight of the composition).
  • Suitable fatty acids in the context of this invention include aliphatic carboxylic acids of formula RCOOH, where R is a linear or branched alkyl or alkenyl chain containing from 6 to 24, more preferably 10 to 22, most preferably from 12 to 18 carbon atoms and 0 or 1 double bond.
  • RCOOH aliphatic carboxylic acids of formula RCOOH
  • R is a linear or branched alkyl or alkenyl chain containing from 6 to 24, more preferably 10 to 22, most preferably from 12 to 18 carbon atoms and 0 or 1 double bond.
  • saturated C12-18 fatty acids such as lauric acid, myristic acid, palmitic acid or stearic acid
  • fatty acid mixtures in which 50 to 100% (by weight based on the total weight of the mixture) consists of saturated C12-18 fatty acids.
  • Such mixtures may typically be derived from natural fats and/or optionally hydrogenated natural oils (such as coconut oil, palm kernel oil or tallow).
  • Another aspect of the present invention provides for a method of reducing malodour from a surface comprising the step of cleaning the surface with a composition of the first aspect preferably diluted with water.
  • the surface is preferably that of a fabric desired to be cleaned or laundered.
  • the laundry composition is added to a wash liquor, for example via the dispensing drawer of a washing machine, via a dosing ‘ball’ I ‘cap’ or simply by adding directly to the wash liquor.
  • Fabrics to be laundered are also added to the wash liquor and the resulting combination of wash liquor and fabrics agitated.
  • the wash liquor is subsequently drained and one or more rinsing steps undertaken, wherein clean water (i.e. water substantially free from a laundry composition) is then added to the fabrics.
  • a final rinse step whereby a fabric conditioning composition is added to the rinse liquor may optionally be undertaken. After the final rinse the fabrics are drained of rinse liquor and drained in a conventional manner, for example by line drying or trying in a tumble dryer.
  • Yet another aspect of the invention relates to use of the composition of the invention for the purpose of minimizing odour from the surface cleaned with the composition.
  • the method or use of the composition as claimed in the present invention may be carried out in water of a particular hardness.
  • “Hard water” is typically water which has a degree of 20 or greater French Hard units. In some instances, the water hardness can be much higher, for example 30 or 40 French Hard units. A usual upper limit is 50 degrees French Hard units in typical laundry processes. Common ranges for Hard Water are 20 - 40 or 30 - 40 degrees French Hard.
  • Examples A-C and 1-3 Effect of degree of methyl esterification of the pectin samples on the maldour
  • Underarm swab from each volunteer was collected before bath in 1ml of saline with 0.1% Triton X100.
  • the pooled samples from multiple volunteers was extracted from the swabs from each sample twice and centrifuged to pellet down the cells. The supernatant was discarded, and pellet was resuspended in original volume of fresh saline with 0.1 % Triton X100.
  • the bacterial number in the pooled pellet was enumerated by serial dilution and plating before the test. Usually, the underarm bacteria correspond to 10 6 cells/ml.
  • the pellet was serially diluted to approximately 10 2 -10 3 cells/ml were used for the in-vitro assay and 10 5 to 10 6 cells/ml for thetician malodour assay.
  • the odour evaluation was done by sniffing the opened glass bottles either by a trained or naive panel. Scores range between 5 and 0. Maximum odour being 5 and 0 representing no malodour. The scores are summarized in the table - 1 below

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Abstract

La présente invention concerne une composition de nettoyage, de préférence pour le nettoyage d'un tissu, qui garantit que le tissu ainsi nettoyé est sensiblement exempt de mauvaises odeurs. Ceci est obtenu à l'aide d'une composition comprenant une pectine et un tensioactif, la pectine ayant un degré d'estérification de méthyle supérieur à 52,5% en poids.
PCT/EP2023/087220 2023-01-25 2023-12-21 Composition de nettoyage pour réduire les mauvaises odeurs Ceased WO2024156450A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202380092184.6A CN120584172A (zh) 2023-01-25 2023-12-21 用于减少异味的清洁组合物
EP23838002.6A EP4655370A1 (fr) 2023-01-25 2023-12-21 Composition de nettoyage pour réduire les mauvaises odeurs

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Application Number Priority Date Filing Date Title
EP23153247 2023-01-25
EP23153247.4 2023-01-25

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WO2024156450A1 true WO2024156450A1 (fr) 2024-08-02

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Citations (4)

* Cited by examiner, † Cited by third party
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WO1999031211A1 (fr) * 1997-12-17 1999-06-24 Hercules Incorporated Polysaccharides a modification hydrophobe pour preparations d'entretien domestique
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