WO2022078714A1 - Composition - Google Patents

Composition Download PDF

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Publication number
WO2022078714A1
WO2022078714A1 PCT/EP2021/075787 EP2021075787W WO2022078714A1 WO 2022078714 A1 WO2022078714 A1 WO 2022078714A1 EP 2021075787 W EP2021075787 W EP 2021075787W WO 2022078714 A1 WO2022078714 A1 WO 2022078714A1
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WO
WIPO (PCT)
Prior art keywords
premix
surfactant
water
sulphated
composition
Prior art date
Application number
PCT/EP2021/075787
Other languages
English (en)
Inventor
Debosree CHATTERJEE
Ganesan RAJENDIRAN
Original Assignee
Unilever Ip Holdings B.V.
Unilever Global Ip Limited
Conopco, Inc., D/B/A Unilever
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 Ip Holdings B.V., Unilever Global Ip Limited, Conopco, Inc., D/B/A Unilever filed Critical Unilever Ip Holdings B.V.
Priority to BR112023006098A priority Critical patent/BR112023006098A2/pt
Publication of WO2022078714A1 publication Critical patent/WO2022078714A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146—Sulfuric acid esters
    • 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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0094—Process for making liquid detergent compositions, e.g. slurries, pastes or gels
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/12—Soft surfaces, e.g. textile

Definitions

  • the present invention relates to a powder premix for forming a laundry liquid composition on dilution with water.
  • GB 2289687 discloses a detergent composition in form of agglomerates contains from
  • a detersive surfactant system including by weight of the surfactant system, at least 30 percent of a sulfated surfactant selected from alkyl sulfates, alkyl ethoxy sulfates, secondary alkyl sulfates and mixtures thereof.
  • the detergent includes from
  • the detergent composition includes at least about 1 percent by weight of a detergency builder to enhance cleaning.
  • the surfactant system, potassium salt and builder are agglomerated to form detergent agglomerates which are substantially free of phosphates.
  • the anionic surfactants in the detergent composition have significantly improved dissolution in aqueous laundering solutions, especially those kept at cold temperatures.
  • T raditional powder detergent compositions are not suitable for forming liquid detergent compositions on dilution with water since they merely form a wash liquor.
  • the surfactant chassis commonly used in powder detergent compositions ones usually comprising a high level of linear alkyl benzene sulphonate (LAS) compared to other surfactants such as the alkyl ether sulphates do not form stable compositions but instead tend to form biphasic mixtures on dilution with small amounts of water, much lower than used in the wash process.
  • LAS linear alkyl benzene sulphonate
  • Dilutable products are highly desired by the environmentally conscious consumer since they can be purchased at source in a low volume and with limited secondary packaging. Once in the domestic environment they can be diluted in a ‘keeper 1 container which permits dilution up to 10 or more times in water, i.e. one part powder to many parts water, to form a liquid composition. Thus, not only is a stable powder formulation desirable but the resulting laundry liquid composition also has to be stable and to meet consumer expectations in physical aesthetics and performance.
  • a powder premix for forming a stable liquid laundry detergent composition when mixed with water comprising from 30-80% wt. of the premix a surfactant, and 8 to 60% wt. of the premix a water-soluble salt, wherein the surfactant comprises a sulphated surfactant, wherein the water-soluble salt and surfactant together comprise at least 70% wt. of the composition, wherein the weight ratio between the sulphated surfactant and the water-soluble salt is at least 0.5:1 and wherein the sulphated surfactant is selected from ethoxylated alkyl sulphates, primary alcohol sulphates and mixtures thereof.
  • powder in the context of this invention denotes free-flowing or compacted solid forms. Unless indicated otherwise all references to wt. % of any component is with reference to the premix particulate and not the diluted counterpart.
  • the liquid detergent formed by diluting the powder premix in water is transparent.
  • transparent means that the composition when diluted 1 part premix in 3 parts water is less than 20 NTU.
  • composition according to the invention is a free-flowing powdered solid, with a loose (unpackaged) bulk density generally ranging from about 200g/l to about 1 ,300 g/l, preferably from about 400 g/l to about 1 ,000 g/l, more preferably from about 500g/l to about 900 g/l.
  • the powder premix comprises a non-sulphated surfactant in addition to the sulphated surfactant.
  • the weight ratio of sulphated to non-sulphated surfactant is from 1 : 1 to 100: 1. Such weight ratios are determined with reference to the weight of the material added to the composition.
  • the particulate premix composition of the invention comprises from 30 to 80%, preferably from 40 to 70%, and more preferably from 45 to 65% (by weight based on the total weight of the premix composition) surfactant.
  • surfactant in the context of particulate detergent formulations denotes a surfactant which provides a detersive (i.e. cleaning) effect to laundry treated as part of a domestic laundering process.
  • the powder premix comprises sulphated surfactant and non-sulphated surfactant, in a weight ratio of from 1 : 1 to 15: 1 (sulphated to non-sulphated surfactant) and especially preferably from 2: 1 to 7: 1.
  • the powder premix comprises a water-soluble salt and the water soluble salt is preferably present in a total amount ranging from about 8 to about 60%, preferably from about 10 to 55% and most preferably from 25 to 50% (by weight based on the total weight of the premix composition).
  • Preferred water-soluble salts include sodium carbonate, potassium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, sodium citrate and mixtures thereof.
  • the more preferred water-soluble salts are sodium chloride, sodium sulphate, sodium carbonate and sodium citrate. The most preferred is sodium carbonate.
  • the weight ratio between the water-soluble salt and the sulphated surfactant is at least 0.5 to 1 and preferably to 3: 1. Preferably, the weight ratio is from 1.5: 1 to 2.5: 1. Optimal weight ratios depend on the water-soluble salt used. For example, the weight ratio between the sodium chloride and the sulphated surfactant is from 0.8: 1 to 2.5: 1. The weight ratio between the sodium sulphate and the sulphated surfactant is from 0.5:1 to 2:1 . The weight ratio between the sodium carbonate and the sulphated surfactant is from 0.5:1 to 1 .9:1 . The weight ratio between the sodium citrate and the sulphated surfactant is from 0.4: 1 to 2: 1.
  • the powder premix comprises water soluble salt, and non-sulphated surfactant in a weight ratio of from 2:1 to 10:1.
  • the non-sulphated surfactant is selected from linear alkylbenzene sulphonate, non-ionic surfactants, methyl ester sulfonates (MES), alpha olefin sulphonate (AOS), sodium toluene sulfonate (STS), sodium cumene sulfonate (SCS), sodium xylene sulfonate (SXS) and mixtures thereof.
  • MES methyl ester sulfonates
  • AOS alpha olefin sulphonate
  • STS sodium toluene sulfonate
  • SCS sodium cumene sulfonate
  • SXS sodium xylene sulfonate
  • the most preferred non-sulphate surfactants are LAS and non-ionic surfactants which may be used in mixtures.
  • a class of non-soap anionic surfactant for use in particulate premix compositions includes 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 sulfonated 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 sulfophenyl 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.
  • Nonionic surfactants for use in particulate premix compositions are typically 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.
  • the reaction product is known as an alcohol alkoxylate.
  • the polyoxyalkylene compounds can have a variety of block and heteric (random) structures. For example, they can comprise a single block of alkylene oxide, or they can be diblock alkoxylates or triblock alkoxylates. Within the block structures, the blocks can be all ethylene oxide or all propylene oxide, or the blocks can contain a heteric mixture of alkylene oxides.
  • 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 nonionic surfactant for use in particulate premix compositions 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 total level of non-ionic surfactant may suitably range from 1 to 10% (by weight based on the total weight of the composition).
  • the powder premix comprises 0 to 30% non-sulphated surfactant by wt. of the premix.
  • non-sulphated preferably means sulphonated.
  • the sulphated surfactant is selected from ethoxylated alkyl sulphates, primary alcohol sulphates and mixtures thereof.
  • Non-soap anionic surfactants for use in particulate premix compositions are typically salts of organic sulfates and sulfonates 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 sulfates, alkyl ether sulfates, alkaryl sulfonates, alpha-olefin sulfonates and mixtures thereof.
  • the alkyl radicals preferably contain from 10 to 18 carbon atoms and may be unsaturated.
  • the alkyl ether sulfates 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.
  • the powder premix comprises from 30 to 60% sulphated surfactant.
  • the powder premix comprises from 8 to 60% wt. water-soluble salt. More preferably, the premix composition comprises at least 10% water-soluble salt, more preferably at least 35%, especially preferably at least 45% wt. water-soluble salt.
  • the weight ratio between the water-soluble salt and the total surfactant is from 0.1 : 1 to 2: 1 and more preferably, 1.1 :1 to 1.9:1.
  • the weight ratio between the water-soluble salt and the total non-sulphated surfactant (more preferably, the sulphonated surfactant) level is from 0.01 : 1 to 3: 1 , more preferably from 1.1:1 and especially preferably from 1.3:1 to 1.7:1.
  • the weight ratio between the water-soluble salt and, where present, the total ethoxylated sulphated surfactant level is from 0.01 : 1 to 2: 1.
  • Builders are principally used to reduce water hardness. This is done either by sequestration or chelation (holding hardness minerals in solution), by precipitation (forming an insoluble substance), or by ion exchange (trading electrically charged particles). Builders can also supply and maintain alkalinity, which assists cleaning, especially of acid soils; help keep removed soil from redepositing during washing; and emulsify oily and greasy soils.
  • Builders for use in particulate premix compositions can be of the organic or inorganic type, or a mixture thereof. Non-phosphate builders are preferred. However, we have found that builder types have a deleterious effect on dilution performance and in particular on the stability of the diluted premix.
  • Inorganic, non-phosphate builders for use in particulate premix compositions include carbonates, silicates, zeolites, and mixtures thereof however, carbonate builders are strongly preferred.
  • the water-soluble salt is a carbonate builder.
  • Suitable carbonate builders for use in particulate premix compositions include mixed or separate, anhydrous or partially hydrated alkali metal carbonates, bicarbonates or sesquicarbonates.
  • the alkali metal is sodium and/or potassium, with sodium carbonate being particularly preferred.
  • silicate builders include amorphous forms and/or crystalline forms of alkali metal (such as sodium) silicates such as crystalline layered sodium silicates (phyllosilicates) of the general formula (I)
  • Such materials can be prepared with different crystal structures, referred to as a, p, y and 5 phases, with 6-sodium disilicate being noteworthy.
  • Zeolites are naturally occurring or synthetic crystalline aluminosilicates composed of (SiO ⁇ 4- and (AICU) 5- tetrahedra, which share oxygen-bridging vertices and form cage-like structures in crystalline form.
  • the frameworks acquire their negative charge by substitution of some Si by Al. The negative charge is neutralised by cations and the frameworks are sufficiently open to contain, under normal conditions, mobile water molecules.
  • Suitable zeolite builders for use in the invention may be defined by the general formula (II):
  • Suitable organic, non-phosphate builders for use in particulate premix compositions include polycarboxylates, in acid and/or salt form.
  • alkali metal e.g. sodium and potassium
  • alkanolammonium salts are preferred.
  • Specific examples of such materials include sodium and potassium citrates, sodium and potassium tartrates, the sodium and potassium salts of tartaric acid monosuccinate, the sodium and potassium salts of tartaric acid disuccinate, sodium and potassium ethylenediaminetetraacetates, sodium and potassium N(2-hydroxyethyl)- ethylenediamine triacetates, sodium and potassium nitrilotriacetates and sodium and potassium N- (2-hydroxyethyl)-nitrilodiacetates.
  • Polymeric polycarboxylates may also be used, such as polymers of unsaturated monocarboxylic acids (e.g. acrylic, methacrylic, vinylacetic, and crotonic acids) and/or unsaturated dicarboxylic acids (e.g. maleic, fumaric, itaconic, mesaconic and citraconic acids and their anhydrides).
  • unsaturated monocarboxylic acids e.g. acrylic, methacrylic, vinylacetic, and crotonic acids
  • unsaturated dicarboxylic acids e.g. maleic, fumaric, itaconic, mesaconic and citraconic acids and their anhydrides
  • Specific examples of such materials include polyacrylic acid, polymaleic acid, and copolymers of acrylic and maleic acid.
  • the polymers may be in acid, salt or partially neutralised form and may suitably have a molecular weight (Mw) ranging from about 1,000 to 100,000, preferably from about 2,000 to about 85,000, and more
  • Preferred builders for use in particulate premix compositions may be selected from zeolites (of the general formula (II) defined above), sodium carbonate, b-sodium disilicate and mixtures thereof.
  • the level of phosphate builders in a particulate premix composition is less than 1% (by weight based on the total weight of the composition).
  • phosphate builder denotes alkali metal, ammonium and alkanolammonium salts of polyphosphate, orthophosphate, and/or metaphosphate (e.g. sodium tri polyphosphate).
  • the composition comprises from 0 to 5% wt of the premix non-carbonate builder such as zeolite, silicate and polycarboxylates. More preferably, the composition comprises from 0 to 1 , most preferably from 0 to 0.1% wt. builder selected from zeolite, polycarboxylate and silicate.
  • the premix non-carbonate builder such as zeolite, silicate and polycarboxylates. More preferably, the composition comprises from 0 to 1 , most preferably from 0 to 0.1% wt. builder selected from zeolite, polycarboxylate and silicate.
  • a particulate composition may also include one or more fillers to assist in providing the desired density and bulk to the composition.
  • Suitable fillers for use in the invention may generally be selected from neutral salts with a solubility in water of at least 1 gram per 100 grams of water at 20° C; such as alkali metal, alkaline earth metal, ammonium or substituted ammonium chlorides, fluorides, acetates and sulfates and mixtures thereof.
  • Preferred fillers for use in the invention include alkali metal (more preferably sodium and/or potassium) sulfates and chlorides and mixtures thereof, with sodium sulfate and/or sodium chloride being most preferred.
  • Filler when included, may be present in a total amount ranging from 0 to about 1%, preferably from about 0 to about 0.50% (by weight based on the total weight of the premix composition).
  • the composition comprises a foam booster.
  • the foam booster is included to improve foaming performance in the final detergent wash liquor but without also boosting the foaming during dilution to an extent where the dilution of the premix by the consumer in the domestic environment is impacted.
  • a foam booster which dramatically increases the foaming when the consumer mixes with water may cause too much foam to be generated thus preventing adequate mixing by the consumer or even that less water than desired is added to the premix. It also reduces the chances of the right amount of water to be added to the premix.
  • the foam booster is selected from alkyl ether carboxylic acids such as alcohol polyalkylene glycol ether acetic acid, alkali-metal alkyl isethionates such as sodium cocoyl isethionate, alkali-metal inulin derivatives such as sodium carboxymethyl inulin (with a degree of substitution of from 1 to 5, more preferably from 2 to 2.5), monoisopropyl amine alkyl benzene sulphonate, cocomonoethanolamide, betaines such as cocamidopropyl betaine, sodium alkyl benzene sulphonate, C12-14 alkyl (hydroxyethyl)dimethyl quaternary ammonium chlorides, polyethylene glycol, methyl, 2-propenyloxy terminated, poly(oxy-1,2-ethanediyl), s
  • alkyl ether carboxylic acids such as alcohol polyalkylene glycol ether acetic acid
  • the foam booster is present at a sufficient level to provide from 0.1 to 0.5% wt. ion the diluted mix.
  • a particulate premix composition may also contain one or more cosurfactants (such as amphoteric (zwitterionic) and/or cationic surfactants) in addition to the non-soap anionic and/or nonionic detersive surfactants described above.
  • cosurfactants such as amphoteric (zwitterionic) and/or cationic surfactants
  • Specific cationic surfactants include Cs to Cis alkyl dimethyl ammonium halides and derivatives thereof in which one or two hydroxyethyl groups replace one or two of the methyl groups, and mixtures thereof.
  • Cationic surfactant, when included, may be present in an amount ranging from 0.1 to 5% (by weight based on the total weight of the premix composition).
  • amphoteric (zwitterionic) surfactants include alkyl amine oxides, alkyl betaines, alkyl amidopropyl betaines, alkyl sulphobetaines (sultaines), alkyl glycinates, alkyl carboxyglycinates, alkyl amphoacetates, alkyl amphopropionates, alkylamphoglycinates, alkyl amidopropyl hydroxysultaines, acyl taurates and acyl glutamates, 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.
  • Amphoteric (zwitterionic) surfactant when included, may be present in an amount ranging from 0.1 to 5% (by weight based on the total weight of the premix composition).
  • a premix composition of the invention may contain one or more fatty acids and/ or salts thereof.
  • 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.
  • 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).
  • the fatty acids may be present in the form of their sodium, potassium or ammonium salts and/or in the form of soluble salts of organic bases, such as mono-, di- or triethanolamine.
  • Fatty acids and/or their salts when included, may be present in an amount ranging from about 0.25 to 5%, more preferably from 0.5 to 5%, most preferably from 0.75 to 4% (by weight based on the total weight of the premix composition).
  • a particulate premix composition may also include one or more polymeric cleaning boosters, such as soil release polymers, anti-redeposition polymers, and mixtures thereof.
  • Soil release polymers adsorb onto a fabric surface assisting soil removal.
  • Suitable soil release polymers for use in particulate comositions include copolyesters of dicarboxylic acids (for example adipic acid, phthalic acid or terephthalic acid), diols (for example ethylene glycol or propylene glycol) and polydiols (for example polyethylene glycol or polypropylene glycol).
  • An example of such a material has a midblock formed from propylene terephthalate repeat units and one or two end blocks of capped polyalkylene oxide, typically PEG 750 to 2000 with methyl end capping.
  • the weight average molecular weight (M w ) of such materials generally ranges from about 1000 to about 20,000 and preferably ranges from about 1500 to about 10,000.
  • a premix composition of the invention will preferably comprise from 0.05 to 6%, more preferably from 0.1 to 5% (by weight based on the total weight of the premix composition) of one or more soil release polymer(s) such as, for example, the copolyesters which are described above.
  • Anti-redeposition polymers stabilise the soil in the wash solution thus preventing redeposition of the soil.
  • Suitable anti-redeposition polymers for use in the invention include alkoxylated polyethyleneimines.
  • Polyethyleneimines are materials composed of ethylene imine units - CH2CH2NH- and, where branched, the hydrogen on the nitrogen is replaced by another chain of ethylene imine units.
  • Preferred alkoxylated polyethylenimines for use in the invention have a polyethyleneimine backbone of about 300 to about 10000 weight average molecular weight (M w ).
  • the polyethyleneimine backbone may be linear or branched. It may be branched to the extent that it is a dendrimer.
  • the alkoxylation may typically be ethoxylation or propoxylation, or a mixture of both.
  • a nitrogen atom is alkoxylated
  • a preferred average degree of alkoxylation is from 10 to 30, preferably from 15 to 25 alkoxy groups per modification.
  • a preferred material is ethoxylated polyethyleneimine, with an average degree of ethoxylation being from 10 to 30, preferably from 15 to 25 ethoxy groups per ethoxylated nitrogen atom in the polyethyleneimine backbone.
  • Another type of suitable anti-redeposition polymer for use in the invention includes cellulose esters and ethers, for example sodium carboxymethyl cellulose.
  • a particulate premix composition of the invention will preferably comprise from 0.05 to 6%, more preferably from 0.1 to 5% (by weight based on the total weight of the premix composition) of one or more anti-redeposition polymers such as, for example, the alkoxylated polyethyleneimines and/or cellulose esters and ethers which are described above.
  • a particulate premix composition of the invention may also include an oxidising agent to facilitate removal of tough food stains and other organic stains by chemical oxidation.
  • the oxidising agent may, for example oxidize polyphenolic compounds commonly found in coffee, tea, wine, and fruit stains. Oxidation by the oxidising agent may also aid in bleaching, whitening, and disinfecting fabrics, and may also provide additional washing machine cleanliness and odour prevention.
  • Suitable oxidising agents for use in the invention include peroxy bleach compounds such as sodium perborate monohydrate and tetrahydrate, and sodium percarbonate.
  • a particulate premix composition will preferably comprise from 5 to 35%, preferably from 8 to 20% (by weight based on the total weight of the composition) of one or more oxidising agents such as the peroxy bleach compounds which are described above.
  • a bleaching activator such as N,N,N',N'-tetraacetylethylenediamine (TAED) or sodium nonanoyloxybenzenesulfonate (NOBS) may be included in conjunction with the one or more oxidising agents to improve bleaching action at low wash temperatures.
  • TAED N,N,N',N'-tetraacetylethylenediamine
  • NOBS sodium nonanoyloxybenzenesulfonate
  • a bleaching catalyst may also be included in addition to or instead of a bleach activator.
  • Typical bleaching catalysts include complexes of heavy metal ions such as cobalt, copper, iron, manganese or combinations thereof; with organic ligands such as 1 ,4,7-triazacyclononane (TACN), 1 ,4,7- trimethyl-1,4,7-triazacyclononane (Me 3 -TACN), 1 ,5,9-trimethyl-1,5,9-triazacyclononane, 1,5,9- triazacyclododecane, 1,4,7-triazacycloundecane, tris[2-(salicylideneamino)ethyl]amine or combinations thereof.
  • TACN 1,4,7-triazacyclononane
  • Me 3 -TACN trimethyl-1,4,7-triazacyclononane
  • 1 ,5,9-trimethyl-1,5,9-triazacyclononane 1,5,9- triazacyclododecane
  • a particulate premix composition may also contain one or more chelating agents fortransition metal ions.
  • chelating agents may also have calcium and magnesium chelation capacity, but preferentially bind heavy metal ions such as iron, manganese and copper.
  • Such chelating agents may help to improve the stability of the composition and protect for example against transition metal catalyzed decomposition of certain ingredients.
  • Suitable transition metal ion chelating agents include phosphonates, in acid and/or salt form.
  • alkali metal e.g. sodium and potassium
  • alkanolammonium salts are preferred.
  • Specific examples of such materials include aminotris(methylene phosphonic acid) (ATMP), 1-hydroxyethylidene diphosphonic acid (HEDP) and diethylenetriamine penta(methylene phosphonic acid (DTPMP) and their respective sodium or potassium salts.
  • HEDP is preferred. Mixtures of any of the above described materials may also be used.
  • Transition metal ion chelating agents when included, may be present in an amount ranging from about 0.1 to about 10%, preferably from about 0.1 to about 3% (by weight based on the total weight of the composition). Mixtures of any of the above described materials may also be used.
  • a particulate premix composition may also comprise an effective amount of one or more enzyme selected from the group comprising, pectate lyase, protease, amylase, cellulase, lipase, mannanase and mixtures thereof.
  • the enzymes are preferably present with corresponding enzyme stabilizers.
  • a particulate premix composition may contain further optional ingredients to enhance performance and/or consumer acceptability.
  • additional optional ingredients include dye transfer inhibitors (e.g. polyvinylpyrrolidone), foam control agents, preservatives (e.g. bactericides), anti-shrinking agents, anti-wrinkle agents, antioxidants, sunscreens, anti-corrosion agents, drape imparting agents, antistatic agents, ironing aids, colorants, fluorescers, pearlisers and/or opacifiers, and shading dye.
  • dye transfer inhibitors e.g. polyvinylpyrrolidone
  • foam control agents e.g. foam control agents
  • preservatives e.g. bactericides
  • anti-shrinking agents e.g. bactericides
  • anti-wrinkle agents e.g. bactericides
  • antioxidants e.g. bactericides
  • sunscreens e.g. bactericides
  • anti-corrosion agents e.g., bactericides
  • a composition of the invention may be packaged as unit doses in polymeric film soluble in the wash water.
  • a composition of the invention may be supplied in multidose plastics packs with a top or bottom closure.
  • a dosing measure may be supplied with the pack either as a part of the cap or as an integrated system.
  • a method for forming a laundry liquid composition by taking a powder premix as described herein and adding from 3 to 7 parts of water to one part of premix and mixing.
  • the resulting laundry liquid composition is stable and may be kept by the consumer until ready for use as a liquid detergent composition.
  • the resulting stable laundry liquid composition is thus ready for use to put into a washing machine to form a wash liquor.
  • the dose of liquid detergent composition is typically put into a dispenser and from there it is flushed into the machine by the water flowing into the machine, thereby forming the wash liquor. From 5 up to about 65 litres of water may be used to form the wash liquor depending on the machine configuration.
  • the dose of detergent composition may be adjusted accordingly to give appropriate wash liquor concentrations.
  • the dilution step preferably provides a wash liquor which comprises inter alia from about 3 to about 20 g/wash of detersive surfactants (as are further defined above).
  • the wash liquor preferably has a pH of from above 7 to less than 13, preferably from above 7 to less than 10.5.
  • a subsequent aqueous rinse step and drying the laundry is preferred.
  • a packaged product comprising a powder premix as described above, in a container and wherein less than 30% of the available volume in the container is filled with premix.
  • a laundry liquid composition obtainable by adding water to a powder premix as claimed as described above.
  • EXAMPLE 1 The following are premix powders.
  • the table shows that lowering the level of non-sulphate (i.e. sulphonate) surfactant versus sulphate surfactant improves the stability of the resulting liquid detergent when the premix is diluted with water.
  • a composition (Formulation 14) has higher levels of traditional powder detergent surfactant and yet this is not suitable for diluting to form a liquid detergent which can be used in a wash regime by a consumer. Measurement of Turbidity of liquid samples.
  • the turbidity meter has automatic control system to read every fraction of second the sample’s turbidity and show it in display. Most frequent reading can be taken as representative value in case of fluctuation. After 30 s note down the turbidity values in NTU.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

Un pré-mélange pulvérulent, destiné à former une composition de détergent à lessive liquide stable lorsqu'il est mélangé à de l'eau, comprend de 30 à 80 % en poids du pré-mélange d'un tensioactif, et de 8 à 60 % en poids du pré-mélange d'un sel soluble dans l'eau, le tensioactif comprenant un tensioactif sulfaté, le sel soluble dans l'eau et le tensioactif constituant ensemble au moins 70 % en poids de la composition, le rapport en poids entre le tensioactif sulfaté et le sel soluble dans l'eau étant d'au moins 0,5:1 et le tensioactif sulfaté étant choisi parmi des sulfates d'alkyle éthoxylés, des sulfates d'alcool primaire et des mélanges de ces derniers.
PCT/EP2021/075787 2020-10-13 2021-09-20 Composition WO2022078714A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR112023006098A BR112023006098A2 (pt) 2020-10-13 2021-09-20 Premix em pó para formar uma composição detergente líquida estável para lavagem de roupas, produto embalado, método para formar uma composição líquida para lavagem de roupas e composição líquida para lavagem de roupas

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IN202021044622 2020-10-13
IN202021044622 2020-10-13
EP20212098 2020-12-07
EP20212098.6 2020-12-07

Publications (1)

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WO2022078714A1 true WO2022078714A1 (fr) 2022-04-21

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BR (1) BR112023006098A2 (fr)
WO (1) WO2022078714A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2289687A (en) 1994-04-11 1995-11-29 Procter & Gamble Agglomerated Detergent Composition Containing High Levels Of Anionic Surfactants And Potassium Salt For Improved Solubility In Cold Temperature Laundering Sol
WO1998016623A1 (fr) * 1996-10-15 1998-04-23 The Procter & Gamble Company Kit de predissolution de compositions detergentes
US20030104962A1 (en) * 2001-12-05 2003-06-05 The Procter & Gamble Company Container and kit for laundering a fabric and a method therefor
WO2007141310A1 (fr) * 2006-06-09 2007-12-13 Unilever Plc Composition d'assouplissant textile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2289687A (en) 1994-04-11 1995-11-29 Procter & Gamble Agglomerated Detergent Composition Containing High Levels Of Anionic Surfactants And Potassium Salt For Improved Solubility In Cold Temperature Laundering Sol
WO1998016623A1 (fr) * 1996-10-15 1998-04-23 The Procter & Gamble Company Kit de predissolution de compositions detergentes
US20030104962A1 (en) * 2001-12-05 2003-06-05 The Procter & Gamble Company Container and kit for laundering a fabric and a method therefor
WO2007141310A1 (fr) * 2006-06-09 2007-12-13 Unilever Plc Composition d'assouplissant textile

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