[go: up one dir, main page]

WO2024253984A1 - Procédé de détection de taches invisibles sur des tissus - Google Patents

Procédé de détection de taches invisibles sur des tissus Download PDF

Info

Publication number
WO2024253984A1
WO2024253984A1 PCT/US2024/032190 US2024032190W WO2024253984A1 WO 2024253984 A1 WO2024253984 A1 WO 2024253984A1 US 2024032190 W US2024032190 W US 2024032190W WO 2024253984 A1 WO2024253984 A1 WO 2024253984A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
fabric
fabrics
invisible
stains
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.)
Pending
Application number
PCT/US2024/032190
Other languages
English (en)
Inventor
Xiaoyi Ren
Ming Tang
Ye Tian
Di YUAN
Jiemin SHEN
Yanli Zhang
Xiaobin CHU
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.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
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 Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of WO2024253984A1 publication Critical patent/WO2024253984A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/94—Investigating contamination, e.g. dust
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36—Textiles
    • G01N33/367—Fabric or woven textiles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G01N21/5907—Densitometers

Definitions

  • the present invention relates to a method of detecting invisible stains in fabrics.
  • the present invention in one aspect relates to a method of detecting invisible stains in fabrics, the method comprising the steps of:
  • the method of detecting invisible stains in fabrics comprises the steps of:
  • the method of detecting invisible stains in fabrics may comprise the steps of:
  • TWIbefore Transmitted Whiteness Index before washing
  • RWIbefore Reflected Whiteness Index before washing
  • the method of detecting invisible stains according to the present disclosure is simple and easy-to-use.
  • the method of detecting invisible stains according to the present disclosure can provide consistent results with the sensory tests.
  • the present application is related to a method for laundering fabric, the method comprising the steps of:
  • a detergent composition comprising from about 1% to about 70%, by weight of the composition, of a surfactant system, wherein the surfactant system comprises from about 51% to about 100%, by weight of the surfactant system, of an anionic surfactant.
  • the surfactant system may further comprise from about 1% to about 49%, by weight of the surfactant system, of a nonionic surfactant.
  • the weight ratio of the anionic surfactant to the nonionic surfactant may be from 1.05 to 10, preferably from 1.1 to 5, more preferably from 1.15 to 3, e.g., 1.1, 1.5, 2, 3 or any ranges therebetween.
  • the detergent composition may further comprise from about 0.05% to about 15%, preferably from about 0.1% to about 5%, more preferably from about 0.2% to about 3%, by weight of the detergent composition, of a polyalkylene oxide graft copolymer comprising: a) polyalkylene oxide component as a graft base in which the polyalkylene oxide has a number average molecular weight of from 1000 to 20,000 Daltons and is based on ethylene oxide, propylene oxide, butylene oxide or mixtures thereof, b) polyvinyl ester component as side chains in which the polyvinyl ester is derived from a saturated monocarboxylic acid containing from 1 to 6 carbon atoms and/or a methyl or ethyl ester of acrylic or methacrylic acid, and c) polyvinylpyrrolidone as side chains, wherein the weight ratio of (a):(c) is from 1 :0.1 to 1 :2, and wherein the amount, by weight,
  • the polyalkylene oxide comprises and preferably consists of ethylene oxide units or ethylene oxide and propylene oxide units
  • the polyvinyl ester comprises and preferably consists of vinyl acetate.
  • the polyalkylene oxide in the graft copolymer, has a number average molecular weight of from 2000 to 15,000 Daltons; and/or, the weight ratio of (a):(b) is from 1.0:0.1 to 1.0:0.99, preferably from 1.0:0.3 to 1.0:0.9; and/or, the poly alkylene oxide graft polymer has a weight average molecular weight of from 4,000 Da to 100,000 Da.
  • the composition may further comprise a treatment adjunct which is preferably selected from the group consisting of a surfactant system, fatty acids and/or salts thereof, enzymes, encapsulated benefit agents, soil release polymers, hueing agents, builders, chelating agents, dye transfer inhibiting agents, dispersants, enzyme stabilizers, anti-oxidants, catalytic materials, bleaching agents, bleach catalysts, bleach activators, polymeric dispersing agents, soil removal/anti-redeposition agents, polymeric grease cleaning agents, amphiphilic copolymers, brighteners, suds suppressors, dyes, hueing agents, perfume, encapsulated perfume, structure elasticizing agents, fabric softeners, carriers, fillers, hydrotropes, solvents, anti-microbial agents and/or preservatives, neutralizers and/or pH adjusting agents, processing aids, rheology modifiers and/or structurants, opacifiers, pearlescent agents, pigments, anti-corrosion and/or anti -t
  • a treatment adjunct which is
  • the composition is in the form of a liquid composition, a granular composition, a single-compartment pouch, a multi-compartment pouch, a sheet, a pastille or bead, a fibrous article, a tablet, a bar, flake, or a mixture thereof.
  • the detergent composition comprises: from about 2% to about 20%, by weight of the detergent composition, of C6-C20 LAS, from about 0% to about 10%, by weight of the detergent composition, of C6-C20 AES, from about 0% to about 10%, by weight of the detergent composition, of C6-C20 AS, from about 2% to about 20%, by weight of the detergent composition, of C12-C18 alkyl ethoxylates, and from about 0.2% to about 3%, by weight of the detergent composition, of the graft copolymer, wherein the weight ratio of the anionic surfactant to the nonionic surfactant is from 1.15 to 2.5.
  • the fabrics which are treated in the laundering method according to the present disclosure may be characterized in that:
  • ARWI of the fabric is from -5 to 5, preferably from -3 to 3, e.g., -3, -2, -1, 0, 1, 2, 3 or any ranges therebetween, as measured in accordance with Test 1 : Whiteness Index test; and/or
  • ATWI of the fabric is from -5 to 5, preferably from -3 to 3, e.g., -3, -2, -1, 0, 1, 2, 3 or any ranges therebetween, as measured in accordance with Test 1 : Whiteness Index test.
  • the present application is related to a method for laundering fabric, the method comprising the steps of: i) providing fabrics to which invisible stains are attached; ii) treating the fabrics with a detergent composition comprising from about 0.05% to about 15%, preferably from about 0.1% to about 5%, more preferably from about 0.2% to about 3%, by weight of the detergent composition, of a polyalkylene oxide graft copolymer comprising a) polyalkylene oxide component as a graft base, and b) polyvinyl ester component as side chains, and/or c) polyvinylpyrrolidone as side chains.
  • a detergent composition comprising from about 0.05% to about 15%, preferably from about 0.1% to about 5%, more preferably from about 0.2% to about 3%, by weight of the detergent composition, of a polyalkylene oxide graft copolymer comprising a) polyalkylene oxide component as a graft base, and b) polyvinyl ester component as side chains, and/or
  • the terms “comprise”, “comprises”, “comprising”, “include”, “includes”, “including”, “contain”, “contains”, and “containing” are meant to be non-limiting, i.e., other steps and other ingredients which do not affect the end of result can be added.
  • the above terms encompass the terms “consisting of’ and “consisting essentially of’.
  • composition is “substantially free” of a specific ingredient, it is meant that the composition comprises less than a trace amount, alternatively less than 0.1%, alternatively less than 0.01%, alternatively less than 0.001%, by weight of the composition, of the specific ingredient.
  • laundry detergent composition means a composition for cleaning soiled materials, including fabrics. Such compositions may be used as a pre-laundering treatment, a post-laundering treatment, or may be added during the rinse or wash cycle of the laundering operation.
  • the laundry detergent composition compositions may have a form selected from liquid, powder, unit dose such as single-compartment or multi-compartment unit dose, pouch, tablet, gel, paste, bar, or flake.
  • the laundry detergent composition is a liquid or a unit dose composition.
  • liquid laundry detergent composition herein refers to compositions that are in a form selected from the group consisting of pourable liquid, gel, cream, and combinations thereof.
  • the liquid laundry detergent composition may be either aqueous or nonaqueous, and may be anisotropic, isotropic, or combinations thereof.
  • unit dose laundry detergent composition herein refers to a water-soluble pouch containing a certain volume of liquid wrapped with a water-soluble film.
  • alkyl means a hydrocarbyl moiety which is branched or unbranched, substituted or unsubstituted. Included in the term “alkyl” is the alkyl portion of acyl groups.
  • main surfactant refers to a surfactant that is present in a composition at an amount that is greater than any other surfactant contained by such composition.
  • main anionic surfactant refers to an anionic surfactant that is present in a composition at an amount that is greater than any other anionic surfactant contained by such composition.
  • major surfactant refers to a surfactant that is present in a composition at an amount that is at least 50% by weight of the total surfactant content in such composition.
  • major anionic surfactant refers to an anionic surfactant that is present in a composition at an amount that is at least 50% by weight of the total anionic surfactant content in such composition.
  • washing solution refers to the typical amount of aqueous solution used for one cycle of laundry washing, preferably from 1 L to 50 L, alternatively from 1 L to 20 L for hand washing and from 20 L to 65 L for machine washing.
  • fabric is used non-specifically and may refer to any type of natural or man-made synthetic fibers, including natural, and synthetic fibers, such as, but not limited to, cotton, regenerated cotton, synthetically-modified cotton, linen, wool, polyester, nylon, elastane, silk, acrylic, and the like, as well as various blends and combinations.
  • invisible stain means any stain attached to fabrics but is invisible to naked eyes under the circumstances of daily use.
  • invisible stain refers to any stain attached to fabrics but is invisible to observers who are located at a side of fabrics which is the same with a light source (e.g. sunshine or D65 standard illuminant).
  • invisible stain refers to any stain attached to fabrics which is visible to observers who are located at an opposite side of fabrics to a light source (e.g. sunshine or D65 standard illuminant) but is invisible to observers who are located at a side of fabrics which is the same with the light source.
  • the invisible stain may have a micron-sized dimension (e.g.
  • the invisible stain may comprise stains which are deposited within the fabric or strongly adhered to fibers or within internal pores of fibre.
  • the invisible stain may comprise sweat stain, urine stain, desquamed skin cells, dander, sebum, sugar, polysaccharides, guar or any combinations thereof which are deposited within the fabric or strongly adhered to fibers or within internal pores of fibre.
  • the term “transmitted light source” means a light source which is located at an opposite side of fabrics to the observer.
  • the transmitted light source is a D65 illuminant.
  • TWI is measured by using spectrometer under the following conditions: D65 illuminant at an opposite side of fabrics to the observer, an observing angle of 10°.
  • the term “reflected light source” means a light source which is located at a side of fabrics which is the same with the observer.
  • the reflected light source is a D65 illuminant.
  • RWI is measured by using spectrometer under the following conditions: D65 illuminant at a side of fabrics which is the same with the observer, an observing angle of 10°.
  • compositions of the present disclosure may be selected from the group of detergent powder compositions, light duty liquid detergents compositions, heavy duty liquid detergent compositions, detergent gels commonly used for laundry, bleaching compositions, laundry additives, fabric enhancer compositions, unit dose articles, and mixtures thereof.
  • the composition may be in any suitable form.
  • the composition may be in the form of a liquid composition, a granular composition, a single-compartment pouch, a multi -compartment pouch, a sheet, a pastille or bead, a fibrous article, a tablet, a bar, flake, or a mixture thereof.
  • the composition can be selected from a liquid, solid, or combination thereof.
  • the composition can be an aqueous liquid laundry detergent composition.
  • the water content can be present at a level of from 5.0 % to 95 %, preferably from 25 % to 90 %, more preferably from 50 % to 85 % by weight of the liquid detergent composition.
  • the pH range of the detergent composition may be from 2.5 to 9, e.g., from 3.0 to 5.0, from 4.0 to 7.0, from 6.0 to 8.9, preferably from pH 7 to 8.8.
  • the detergent composition can also be encapsulated in a water-soluble film, to form a unit dose article.
  • unit dose articles comprise a detergent composition of the present invention, wherein the detergent composition comprises less than 20%, preferably less than 15%, more preferably less than 10% by weight of water, and the detergent composition is enclosed in a water- soluble or dispersible film.
  • Such unit-dose articles can be formed using any means known in the art. Suitable unit-dose articles can comprise one compartment, wherein the compartment comprises the liquid laundry detergent composition. Alternatively, the unit-dose articles can be multicompartment unit-dose articles, wherein at least one compartment comprises the liquid laundry detergent composition.
  • the detergent composition may comprise one or more polyalkylene oxide graft copolymers.
  • the graft copolymer can be present at a level of from about 0.01% to about 15%, preferably from about 0.05% to about 10%, more preferably from about 0.1% to about 5%, and most preferably from about 0.2% to about 3%, e.g. 0.10%, 0.15%, 0.20%, 0.25%, 0.30%, 0.35%, 0.40%, 0.45%, 0.50%, 1%, 2%, or 3%, by weight of the composition.
  • the polyalkylene oxide graft copolymer comprises: (a) polyalkylene oxide which has a number average molecular weight of from 1000 to 20,000 Daltons and is based on ethylene oxide, propylene oxide, and/or butylene oxide, (b) polyvinyl ester component as side chains, and (c) polyvinylpyrrolidone as side chains.
  • the polyvinyl ester component is derived from a saturated monocarboxylic acid containing from 1 to 6 carbon atoms and/or a methyl or ethyl ester of acrylic or methacrylic acid.
  • the weight ratio of component a) to component b) is from 1 :0.1 to 1 :0.99, preferably from 1 :0.3 to 1 :0.9.
  • the weight ratio of component a) to component c) is from 1 :0.1 to 1 :2, preferably from 1 :0.3 to 1 : 1.
  • polyalkylene oxide graft copolymer in the polyalkylene oxide graft copolymer, from 1.0 mol% to 60 mol%, preferably from 20 mol% to 60 mol%, more preferably from 30 mol% to 50mol% of the grafted-on monomers of component (b) are hydrolyzed.
  • the polyalkylene oxide comprises or consists of ethylene oxide units or ethylene oxide units and propylene oxide units.
  • the polyvinyl ester comprises vinyl acetate.
  • Suitable polyalkylene oxides may be based on homopolymers or copolymers, with homopolymers being preferred. Suitable polyalkylene oxides may be based on homopolymers of ethylene oxide or ethylene oxide copolymers having an ethylene oxide content of from 40 mol% to 99 mol%. Suitable comonomers for such copolymers may include propylene oxide, n-butylene oxide, and/or isobutylene oxide. Suitable copolymers may include copolymers of ethylene oxide and propylene oxide, copolymers of ethylene oxide and butylene oxide, and/or copolymers of ethylene oxide, propylene oxide, and at least one butylene oxide.
  • the copolymers may include an ethylene oxide content of from 40 to 99 mol%, a propylene oxide content of from 1.0 to 60 mol%, and a butylene oxide content of from 1.0 to 30 mol%.
  • the graft base may be linear (straight-chain) or branched, for example a branched homopolymer and/or a branched copolymer.
  • Branched copolymers may be prepared by addition of ethylene oxide with or without propylene oxides and/or butylene oxides onto polyhydric low molecular weight alcohols, for example trimethylol propane, pentoses, or hexoses.
  • the alkylene oxide unit may be randomly distributed in the polymer or be present therein as blocks.
  • the polyalkylene oxides of component (a) may be the corresponding polyalkylene glycols in free form, that is, with OH end groups, or they may be capped at one or both end groups.
  • Suitable end groups may be, for example, Cl-C25-alkyl, phenyl, and Cl-C14-alkylphenyl groups.
  • the end group may be a Cl -alkyl (e.g., methyl) group.
  • Suitable materials for the graft base may include PEG 1000, PEG 2000, PEG 4000, PEG 6000, PEG 8000, PEG 10000, PEG 12000, and/or PEG 20000, which are polyethylene glycols, and/or MPEG 2000, MPEG 4000, MPEG 6000, MPEG 8000 and MEG 10000 which are monomethoxypolyethylene glycols that are commercially available from BASF under the tradename PLURIOLand/or block copolymers made from ethylene oxi de-propylene oxide-ethylene oxide (EO-PO-EO) or from propylene oxide-ethylene oxidepropylene oxide (PO-EO-PO) such as PE 6100, PE 6800 or PE 3100 commercially available from BASF under the tradename PLURONIC.
  • PEG 1000 polyethylene glycols
  • MPEG 2000, MPEG 4000, MPEG 6000, MPEG 8000 and MEG 10000 which are monomethoxypolyethylene glycols that are commercially available from BASF under the tradename PLURI
  • the polyalkylene oxides may be grafted with N-vinylpyrrolidone as the monomer of component (b).
  • N-vinylpyrrolidone as the monomer of component (b).
  • VP N- vinylpyrrolidone
  • the vinyl pyrrolidone repeat unit has amphiphilic character with a polar amide group that can form a dipole, and a non-polar portion with the methylene groups in the backbone and the ring, making it hydrophobic.
  • the polyalkylene oxides may be grafted with a vinyl ester as the monomer of component (c).
  • the vinyl ester may be derived from a saturated monocarboxylic acid, which may contain 1 to 6 carbon atoms, or from 1 to 3 carbon atoms, or from 1 to 2 carbon atoms, or 1 carbon atom.
  • Suitable vinyl esters may be selected from the group consisting of vinyl formate, vinyl acetate, vinyl propionate, vinyl butyrate, vinyl valerate, vinyl iso-valerate, vinyl caproate, or mixtures thereof.
  • Preferred monomers of component (c) include those selected from the group consisting of vinyl acetate, vinyl propionate, or mixtures thereof, preferably vinyl acetate.
  • the graft copolymers may have a K value of from 5.0 to 200, optionally from 5.0 to 50, determined according to H. Fikentscher in 2% strength by weight solution in dimethylformamide at 25C.
  • Particularly preferred graft copolymers of the present invention have a polyethylene oxide backbone grafted with one or more side chains of polyvinyl acetate. More preferably, the weight ratio of the polyethylene oxide backbone over the polyvinyl acetate side chains ranges from about 1 :0.2 to about 1 : 10, or from about 1 :0.5 to about 1 :6, and most preferably from about 1 : 1 to about 1 :5.
  • One example of such preferred amphiphilic graft copolymers is the SokalanTM HP22 polymer, which is commercially available from BASF Corporation. This polymer has a polyethylene oxide backbone grafted with polyvinyl acetate side chains.
  • the polyethylene oxide backbone of this polymer has a number average molecular weight (Mn) of about 6,000 g/mol (equivalent to about 136 ethylene oxide units), and the weight ratio of the polyethylene oxide backbone over the polyvinyl acetate side chains is about 1 :3.
  • the number average molecular weight (Mn) of this polymer itself is about 13,000 g/mol.
  • composition according to the present disclosure may comprise from 1% to 99%, preferably from 4% to 80%, preferably from 6% to 50%, more preferably from 10% to 30%, e.g., 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 60%, 70%, 80%, 90% or any ranges therebetween, by weight of the composition, of a surfactant system.
  • the surfactant system may comprise an anionic surfactant and a nonionic surfactant.
  • the anionic surfactant may comprise linear alkylbenzene sulfonate (LAS), alkyl ethoxylated sulfates (AES), alkyl sulfates (AS), methyl ester sulfonates (MES), alkyl ether carboxylates (AEC), or any combinations thereof, preferably the anionic surfactant is selected from the group consisting of C6-C20 linear alkylbenzene sulfonate (LAS), C6-C20 alkyl ethoxylated sulfates (AES), C6-C20 alkyl sulfates (AS), and any combinations thereof; and/or
  • the nonionic surfactant may comprise alkyl alkoxylated alcohols, alkyl alkoxylated phenols, alkyl polysaccharides, polyhydroxy fatty acid amides, alkoxylated fatty acid esters, and any combinations thereof, preferably the nonionic surfactant is selected from the nonionic surfactants represented by Formula (1):
  • the anionic surfactant suitable for the composition in the present invention may be selected from the group consisting of C6-C20 linear alkylbenzene sulfonates (LAS), C6-C20 alkyl sulfates (AS), C6-C20 alkyl alkoxy sulfates (AAS), C6-C20 methyl ester sulfonates (MES), C6-C20 alkyl ether carboxylates (AEC), and any combinations thereof.
  • the laundry detergent composition may contain a C6-C20 alkyl alkoxy sulfates (AA X S), wherein x is about 1-30, preferably about 1-15, more preferably about 1-10, most preferably x is about 1-3.
  • the alkyl chain in such AA X S can be either linear or branched, with mid-chain branched AA X S surfactants being particularly preferred.
  • a preferred group of AA X S include C12-C14 alkyl alkoxy sulfates with x of about 1-3.
  • the composition comprises from 1% to 30%, preferably from 2% to 25%, more preferably from 3% to 20%, for example, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 12%, 14%, 16%, 18%, 20%, or any ranges therebetween, by weight of the composition of the anionic surfactant.
  • the nonionic surfactant suitable for the composition in the present invention may be selected from the group consisting of alkyl alkoxylated alcohols, alkyl alkoxylated phenols, alkyl polysaccharides, polyhydroxy fatty acid amides, alkoxylated fatty acid esters, sucrose esters, sorbitan esters and alkoxylated derivatives of sorbitan esters, and any combinations thereof.
  • Nonlimiting examples of nonionic surfactants suitable for use herein include: C12-C18 alkyl ethoxylates, such as Neodol® nonionic surfactants available from Shell; C6-C12 alkyl phenol alkoxylates wherein the alkoxylate units are a mixture of ethyleneoxy and propyleneoxy units; C12-C18 alcohol and C6-C12 alkyl phenol condensates with ethylene oxide/propylene oxide block alkyl polyamine ethoxylates such as Pluronic® available from BASF; C14-C22 mid-chain branched alkyl alkoxylates, BAEx, wherein x is from about 1 to about 30; alkylpolysaccharides, specifically alkylpolyglycosides; polyhydroxy fatty acid amides; and ether capped poly(oxyalkylated) alcohol surfactants.
  • C12-C18 alkyl ethoxylates such as Neodol® nonionic surfactants available
  • alkoxylated ester surfactants such as those having the formula R 1 C(O)O(R2O)nR 3 wherein R 1 is selected from linear and branched Ce- C22 alkyl or alkylene moieties; R 2 is selected from C2H and C3H6 moieties and R 3 is selected from H, CH3, C2H5 and C3H7 moieties; and n has a value between about 1 and about 20.
  • alkoxylated ester surfactants include the fatty methyl ester ethoxylates (MEE) and are well-known in the art.
  • the alkoxylated nonionic surfactant contained by the laundry detergent composition of the present invention is a C6-C20 alkoxylated alcohol, preferably Cs-Cis alkoxylated alcohol, more preferably C10-C16 alkoxylated alcohol.
  • the C6-C20 alkoxylated alcohol is preferably an alkyl alkoxylated alcohol with an average degree of alkoxylation of from about 1 to about 50, preferably from about 3 to about 30, more preferably from about 5 to about 20, even more preferably from about 5 to about 9.
  • the composition comprises from 1% to 30%, preferably from 2% to 25%, more preferably from 3% to 20%, for example, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 12%, 14%, 16%, 18%, 20%, or any ranges therebetween, by weight of the composition of the nonionic surfactant.
  • the ratio of anionic surfactant to nonionic surfactant may be between 0.01 and 100, preferably between 0.05 and 20, more preferably between 0.1 and 10, and most preferably between 0.2 and 5.
  • the anionic surfactant comprises a C6-C20 linear alkylbenzene sulfonate surfactant (LAS), preferably C10-C16 LAS, and more preferably C12-C14 LAS.
  • the anionic surfactant comprises a C6-C20 alkyl alkoxy sulfates (AAS), preferably C10-C16 AAS, and more preferably C12-C14 AAS.
  • the anionic surfactant comprises a C6-C20 alkyl sulfates (AS), preferably C10-C16 AS, and more preferably C12-C14 AS.
  • the anionic surfactant may be present as the main surfactant, preferably as the majority surfactant, in the composition.
  • the ratio of anionic surfactant to nonionic surfactant may be between 1.05 and 100, preferably between 1.1 and 20, more preferably between 1.2 and 10, and most preferably between 1.3 and 5.
  • the anionic surfactant may comprise C6-C20 linear alkylbenzene sulfonates (LAS).
  • the nonionic surfactant may be present as the main surfactant, preferably as the majority surfactant, in the composition.
  • the ratio of anionic surfactant to nonionic surfactant may be between 0.01 and 0.95, preferably between 0.05 and 0.9, more preferably between 0.1 and 0.85, and most preferably between 0.2 and 0.8.
  • the nonionic surfactant may comprise C6-C20 alkoxylated alcohol.
  • the laundry detergent composition of the present invention may further comprise a cationic surfactant.
  • cationic surfactants include: quaternary ammonium surfactants, which can have up to 26 carbon atoms include: alkoxylate quaternary ammonium (AQA) surfactants; dimethyl hydroxyethyl quaternary ammonium compounds; dimethyl diisopropyl quaternary ammonium compounds; dimethyl hydroxy ethyl lauryl ammonium chloride; polyamine cationic surfactants; and amino surfactants, specifically amido propyldimethyl amine (APA).
  • AQA alkoxylate quaternary ammonium
  • APA alkoxylate quaternary ammonium
  • dimethyl hydroxyethyl quaternary ammonium compounds dimethyl diisopropyl quaternary ammonium compounds
  • dimethyl hydroxy ethyl lauryl ammonium chloride polyamine cationic surfactants
  • amino surfactants specifically amido prop
  • the laundry detergent composition of the present invention may further comprise an amphoteric surfactant.
  • amphoteric surfactants include: amine oxides, derivatives of secondary and tertiary amines, derivatives of heterocyclic secondary and tertiary amines, or derivatives of quaternary ammonium, quaternary phosphonium or tertiary sulfonium compounds.
  • Preferred examples include: C6-C20 alkyldimethyl amine oxides, betaine, including alkyl dimethyl betaine and cocodimethyl amidopropyl betaine, sulfo and hydroxy betaines, such as N-alkyl-N,N-dimethylammino-l-propane sulfonate where the alkyl group can be Cs-Cis or C10- C14.
  • betaine including alkyl dimethyl betaine and cocodimethyl amidopropyl betaine, sulfo and hydroxy betaines, such as N-alkyl-N,N-dimethylammino-l-propane sulfonate where the alkyl group can be Cs-Cis or C10- C14.
  • betaine including alkyl dimethyl betaine and cocodimethyl amidopropyl betaine, sulfo and hydroxy betaines, such as N-alkyl-N,N-dimethylammino-l-propan
  • the laundry detergent composition according to the present disclosure may further comprise from 0.01% to 10%, preferably from 0.1% to 5%, more preferably from 0.2% to 3%, most preferably from 0.3% to 2%, by weight of the composition, of a surfactant boosting polymer, preferably polyvinyl acetate grafted polyethylene oxide copolymer.
  • a surfactant boosting polymer preferably polyvinyl acetate grafted polyethylene oxide copolymer.
  • adjunct ingredients include but are not limited to: builders, chelating agents, rheology modifiers, dye transfer inhibiting agents, dispersants, enzymes, and enzyme stabilizers, anti-oxidants, catalytic materials, bleach activators, hydrogen peroxide, sources of hydrogen peroxide, preformed peracids, polymeric dispersing agents, clay soil removal/anti-redeposition agents, brighteners, suds suppressors, dyes, photobleaches, perfumes, perfume microcapsules, structure elasticizing agents, fabric softeners, carriers, hydrotropes, processing aids, solvents, hueing agents, structurants and/or pigments.
  • the precise nature of these adjunct ingredients and the levels thereof in the laundry detergent composition will depend on the physical form of the composition and the nature of the cleaning operation for which it is to be used.
  • the laundry detergent composition according to the present disclosure may further comprise from 0.01% to 10%, preferably from 0.1% to 5%, more preferably from 0.2% to 4%, most preferably from 0.3% to 3%, for example, 0.5%, 1%, 2%, 3%, 4%, 5% or any ranges thereof, by weight of the composition, of a fatty acid.
  • the laundry detergent composition of the present invention is generally prepared by conventional methods such as those known in the art of making laundry detergent compositions. Such methods typically involve mixing the essential and optional ingredients in any desired order to a relatively uniform state, with or without heating, cooling, application of vacuum, and the like, thereby providing laundry detergent compositions containing ingredients in the requisite concentrations.
  • Another aspect of the present invention is directed to a method of using the laundry detergent composition to treat a fabric. Such method can deliver a benefit for removing invisible stains from fabrics.
  • the method comprises the step of administering from 5 g to 120 g of the above-mentioned laundry detergent composition into a laundry washing basin comprising water to form a washing solution.
  • the washing solution in a laundry washing basin herein preferably has a volume from 1 L to 65 L, alternatively from 1 L to 20 L for hand washing and from 10 L to 65 L for machine washing.
  • the temperatures of the laundry washing solution preferably range from 5°C to 60°C.
  • the composition is added to a washing machine via a dispenser (e.g. a dosing drawer). In some other embodiments, the composition is added to an automatic dosing washing machine via an automatic dosing mechanism. In some other embodiments, the composition is added to directly a drum of a washing machine. In some other embodiments, the composition is added directly to the wash liquor.
  • a dispenser e.g. a dosing drawer
  • the composition is added to an automatic dosing washing machine via an automatic dosing mechanism.
  • the composition is added to directly a drum of a washing machine. In some other embodiments, the composition is added directly to the wash liquor.
  • the dosing amount in the method herein may be different depending on the washing type.
  • the method comprises administering from about 5 g to about 60 g of the laundry detergent composition into a hand washing basin (e.g., about 2-4 L).
  • the method comprises administering from about 5 g to about 100 g, preferably from about 10 g to about 65 g of the laundry detergent composition into a washing machine (e.g., about 10-45 L).
  • Test 1 Whiteness Index test
  • Titanium dioxide deposition test is conducted by using Tergotometer (Model: RHLQ IV , from China Daily Chemical Industry Research Institute) as below:
  • TiO2 100-300 nm, available from Mery er (Shanghai) Biochemical Technology Co., Ltd.): 2 g in IL city water
  • Body soil (JB03 available from Sino light inspection & certification Co. Ltd.): 6g in IL city water (optional)
  • Fabric Tracer 10cm x 10cm with-brightener CW98 (100% Heavy Cotton, purchased from Danxin Textile Co. Beijing, China) 3 pieces, or 10cm x 10cm with-brightener PCW13(100% Heavy Cotton, purchased from Danxin Textile Co. Beijing, China), 3 pieces, or 10cm x 10cm nil-brightener CW11(100% Heavy Cotton, purchased from Danxin Textile Co. Beijing, China), which were pre-stripped with China National Standard powder detergent (from Taiyuan, China) in DI water by 6 times
  • the main wash time is 5 minutes.
  • the rinse time is 2 minutes.
  • Polaris was used to measure L* A B and calculate AE which is designated as RWI a ft er
  • Hunter color was used to measure the Opacity Y which is designated as TWI a ft er .
  • Test 2 Whiteness Grade test data
  • Titanium dioxide deposition test is conducted by using Tergotometer (Model: RHLQ IV, from China Daily Chemical Industry Research Institute) as in Test 1.
  • RHLQ IV Reflected Whiteness Grade
  • the score of from -2 to 2 was given by five panelists to observe the whiteness of the fabric between Test Sample and Reference Sample under the condition of a reflected light source, in which negative number means that panelists have a high rating for Reference Sample, positive number means that panelists have a high rating for Test Sample and 0 point means no difference between Samples.
  • TWG Transmitted Whiteness Grade
  • negative number means that panelists have a high rating for Reference Sample
  • positive number means that panelists have a high rating for Test Sample
  • 0 point means no difference between Samples.
  • 6 pieces of fabric for each sample were overlapped and covered by the flashlight as the transmitted light source.
  • a graft copolymer which is PVP/ PVAc-g-PEG at a weight ratio of 20:30:50 ratio with a weight average molecular weight 16,800 Dalton was prepared as follows.
  • a polymerization vessel equipped with stirrer and reflux condenser was initially charged with 720g of PEG (6000 g/mol) and 60g 1,2-propane diol (MPG) under nitrogen atmosphere. The mixture was homogenized at 70°C.
  • the temperature of the reaction mixture was reduced to 80°C and 160.6 g of aqueous sodium hydroxide solution (50 %, 40 mol% respective VAc) was added with maximum feed rate. Upon complete addition of the sodium hydroxide solution, the mixture was stirred for 1 h at 80°C and subsequently cooled to ambient temperature. The resulting graft copolymer is characterized by a K-value of 24. The solid content of the final solution is 45 %.
  • Example 1 Establishment of Method for Detecting Invisible Stains
  • two sample liquid laundry detergent compositions were prepared containing the following ingredients.
  • ARWI as measured can indicate overall cleaning performance (i.e., the overall stain removal), i.e. the higher ARWI indicates the worse cleaning performance, while the lower ARWI indicates better cleaning performance.
  • ATWI transmitted light source
  • Test 1 Whiteness Index test (Titanium dioxide was added without body soil) and a sensory test in accordance with Test 2: Whiteness Grade test were carried out.
  • Test 1 Whiteness Index test as described hereinabove (Titanium dioxide was added without body soil)
  • ARWI and ATWI for Samples 1 and 2 were measured, in which PCW13 (a brightener-containing polycotton) and CW98 (a brightener-containing cotton) were used as white fabric tracers.
  • TWG is a direct sensory measurement for whiteness under the transmitted light source.
  • an analytical parameter has a same trend with TWG, the analytical parameter can be a useful measurement for invisible stains removal.
  • Table 2 indicates that ATWI as measured in accordance with Test 1 : Whiteness Index test is quite consistent with TWG as measured in accordance with Test 2: Whiteness Grade test. Accordingly, ATWI is a good indicator for invisible stains removal.
  • Samples 1 and 2 show very similar ARWI (i.e. the overall visible stain removal between Samples 1 and 2 is similar). Consistently, the scores in the sensory test for Samples 1 and 2 are near zero (i.e., RWG being -0.6 and -0.4) which means no significantly difference therebetween.
  • Sample 2 shows much lower ATWI compared to Sample 1 (3.3 vs 7.7 and -0.2 vs 4.8) in the analytical test and Sample 2 also shows better sensory scores for whiteness compared to Sample 1 (+1.4 and +2.0) in the sensory test.
  • a laundry detergent composition containing an anionic surfactant as a main surfactant e.g. Sample 2 is more efficient in invisible stains removal compared to a laundry detergent composition containing an nonionic surfactant as a main surfactant (e.g. Sample 1) although the overall stain removal is similar therebetween.
  • Example 2 Improved Invisible Stains Removal in Laundry Detergent Composition Containing Polyalkylene Oxide Graft Copolymer
  • Two (2) sample liquid laundry detergent compositions were prepared containing the following ingredients, in which Sample 3 contains a polyalkylene oxide graft copolymer while Sample 4 does not contain such graft copolymer.
  • Test 1 Whiteness Index test as described hereinabove (Titanium dioxide was added together with body soil), ATWI for Samples 3 and 4 were measured. Sample 3 containing a graft copolymer shows significantly improved invisible stains removal compared to Sample 4 without such graft copolymer, as shown in the Table 5 below.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

L'invention concerne un procédé de détection de taches invisibles sur des tissus.
PCT/US2024/032190 2023-06-05 2024-06-03 Procédé de détection de taches invisibles sur des tissus Pending WO2024253984A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310655614.2 2023-06-05
CN202310655614.2A CN116930200A (zh) 2023-06-05 2023-06-05 检测织物中的隐形污渍的方法

Publications (1)

Publication Number Publication Date
WO2024253984A1 true WO2024253984A1 (fr) 2024-12-12

Family

ID=88391541

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2024/032190 Pending WO2024253984A1 (fr) 2023-06-05 2024-06-03 Procédé de détection de taches invisibles sur des tissus

Country Status (2)

Country Link
CN (1) CN116930200A (fr)
WO (1) WO2024253984A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116904266A (zh) * 2023-06-05 2023-10-20 宝洁公司 洗涤织物的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130077093A1 (en) * 2010-05-20 2013-03-28 Purex Co., Ltd. Apparatus and method for inspecting cloth piece
US20160349189A1 (en) * 2015-06-01 2016-12-01 Herbert Kannegiesser Gmbh Method for examining washed or cleaned items of laundry
US20190112554A1 (en) * 2017-10-12 2019-04-18 The Procter & Gamble Company Methods of using leuco colorants as bluing agents in laundry care compositions
JP7264978B1 (ja) * 2021-12-06 2023-04-25 株式会社プレックス 布類検査装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130077093A1 (en) * 2010-05-20 2013-03-28 Purex Co., Ltd. Apparatus and method for inspecting cloth piece
US20160349189A1 (en) * 2015-06-01 2016-12-01 Herbert Kannegiesser Gmbh Method for examining washed or cleaned items of laundry
US20190112554A1 (en) * 2017-10-12 2019-04-18 The Procter & Gamble Company Methods of using leuco colorants as bluing agents in laundry care compositions
JP7264978B1 (ja) * 2021-12-06 2023-04-25 株式会社プレックス 布類検査装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"SURFACTANTS AND DETERSIVE SYSTEMS", KIRK OTHMER ENCYCLOPEDIA OF CHEMICAL TECHNOLOGY, XX, XX, vol. 22, 1983, pages 332 - 432, XP000672395 *

Also Published As

Publication number Publication date
CN116930200A (zh) 2023-10-24

Similar Documents

Publication Publication Date Title
DE69630577T2 (de) Vorwasch Fleckenentfernerzusammensetzung mit Tensid auf Basis von Siloxan
JP2012500892A (ja) 布地ケア組成物、作成プロセス、及び使用方法
JP7537006B2 (ja) 染料固着剤及びアミン系界面活性剤を含有する洗濯洗剤組成物
CN114644963B (zh) 包含染料固定剂和稳定剂的衣物洗涤剂组合物
JP2021528542A (ja) 液体洗濯洗剤組成物
WO2024253984A1 (fr) Procédé de détection de taches invisibles sur des tissus
JP2018090796A (ja) 移染防止剤としての両親媒性グラフトポリマーの使用
WO2024011999A1 (fr) Utilisation d'un copolymère greffé pour ajuster la viscosité d'une composition de détergent à lessive
JP7506257B2 (ja) 染料固着剤及びアミンオキシドを含有する洗濯洗剤組成物
WO2024253910A1 (fr) Procédé de blanchissage de tissu
WO2024250137A1 (fr) Procédé d'évaluation de l'efficacité d'une composition détergente pour empêcher la formation de taches secondaires sur des tissus
WO2024011343A1 (fr) Composition de détergent à lessive contenant un copolymère greffé d'oxyde de polyalkylène et un polymère inhibiteur de transfert de colorants
JP2024540607A (ja) 洗濯洗剤組成物の粘度調整におけるグラフトコポリマーの使用
US20250145911A1 (en) Laundry detergent composition containing graft copolymer and dye transfer inhibitor polymer
WO2025245732A1 (fr) Composition de détergent à lessive contenant un monoalcool
CN111201310B (zh) 包含脂肪酸共混物的清洁组合物
WO2025245733A1 (fr) Composition de détergent à lessive contenant un mono-alcool
CN115572643B (zh) 含有染料固定剂和水溶性钙盐的衣物洗涤剂组合物
WO2025245734A1 (fr) Composition de détergent à lessive contenant un monoalcool
WO2024250147A1 (fr) Composition de détergent à lessive contenant un copolymère greffé et un agent chélatant
WO2024250146A1 (fr) Composition de détergent à lessive contenant un agent bénéfique hydrophobe et un copolymère greffé
JP2024545006A (ja) グラフトコポリマー及び香料原料を含有する洗濯洗剤組成物
JP2025124746A (ja) 染料固着剤及び直鎖状アルキルベンゼンスルホネートを含有する洗濯洗剤組成物
JP2978431B2 (ja) 液体洗浄剤組成物
WO2024250142A1 (fr) Composition de détergent à lessive contenant de la cellulase et un copolymère greffé

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24737567

Country of ref document: EP

Kind code of ref document: A1