WO2020035378A1 - Matières inorganiques fonctionnalisées pour une administration améliorées d'agents bénéfiques à une étoffe - Google Patents

Matières inorganiques fonctionnalisées pour une administration améliorées d'agents bénéfiques à une étoffe Download PDF

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Publication number
WO2020035378A1
WO2020035378A1 PCT/EP2019/071261 EP2019071261W WO2020035378A1 WO 2020035378 A1 WO2020035378 A1 WO 2020035378A1 EP 2019071261 W EP2019071261 W EP 2019071261W WO 2020035378 A1 WO2020035378 A1 WO 2020035378A1
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WIPO (PCT)
Prior art keywords
benefit agent
particles
laundry detergent
detergent composition
fabric
Prior art date
Application number
PCT/EP2019/071261
Other languages
English (en)
Inventor
Koushik ACHARYA
Sujitkumar Suresh Hibare
Arpita Sarkar
Narayanan Subrahmaniam
Original Assignee
Unilever Plc
Unilever N.V.
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 Plc, Unilever N.V., Conopco, Inc., D/B/A Unilever filed Critical Unilever Plc
Priority to BR112021002702-5A priority Critical patent/BR112021002702A2/pt
Priority to EP19748568.3A priority patent/EP3837339B1/fr
Priority to CN201980053448.0A priority patent/CN112585252B/zh
Publication of WO2020035378A1 publication Critical patent/WO2020035378A1/fr
Priority to PH12021550177A priority patent/PH12021550177A1/en
Priority to ZA2021/00630A priority patent/ZA202100630B/en

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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
    • 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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0082—Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
    • 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
    • C11D3/12—Water-insoluble compounds
    • C11D3/1233—Carbonates, e.g. calcite or dolomite
    • 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
    • C11D3/40—Dyes ; Pigments
    • C11D3/42—Brightening agents ; Blueing agents
    • 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
    • C11D3/50—Perfumes
    • C11D3/502—Protected perfumes
    • C11D3/505—Protected perfumes encapsulated or adsorbed on a carrier, e.g. zeolite or clay

Definitions

  • the present invention relates to compositions comprising insoluble inorganic delivery particles incorporated with at least one benefit agent for improving delivery of the benefit agent to a fabric.
  • the invention further relates to a process for making such particles, and methods of treating fabrics with such compositions.
  • a laundry detergent composition may comprise more than 30 different actives.
  • Benefit agents are routinely added to laundry detergent compositions, whether used domestically or industrially. In context of laundry detergent powders, the benefit agents may be blended in with the detergent compositions or adsorbed on to the surface of particles or blended with particles, which in turn are blended into a laundry detergent powder composition.
  • US2008/0207476 discloses particle containing a carbonate, a sulfate, a perfume, and a layered silicate, the particle having a weight ratio of layered silicate to carbonate and sulfate combined of ⁇ 1 :2.
  • the particles, having a desirable fragrance profile, are useful in detergents, fabric softeners, and textile treatments.
  • U. S. Pat. No. 6, 133, 215 discloses a white crystal form of a fabric brightener which is obtained when adding a polyol, such a glycerine, ethylene glycol and/or other polyols, to a solution of a fabric brightener in water or ethanol.
  • Cyclodextrin is disclosed as an absorbent filler/carrier and added as solid material during the process. It has been found that the process of U. S. Pat.
  • No. 6, 133, 215 has some drawbacks including agglomeration and caking of cyclodextrin when adding it into the reaction vessel.
  • the material obtained by the processes of U. S. Pat. No. 6, 133, 215 is not suitable for incorporation into detergent compositions.
  • It is therefore an object of the present invention to provide a laundry composition comprising benefit agent containing delivery particles, which exhibit delayed leaching kinetics for a benefit agent incorporated in such particles, in an aqueous solution of the aforesaid laundry composition.
  • a laundry detergent composition comprising benefit agent delivery particles, wherein at least 90% of the particles are smaller than 15 to 20pm, wherein said particles comprise at least 70 wt% of an insoluble inorganic material; and 0.01 to 30wt% of at least one benefit agent, and wherein the benefit agent delivery particles are produced by co-precipitating said inorganic insoluble material in the presence of the at least one benefit agent in situ.
  • the present invention provides a laundry detergent composition
  • benefit agent delivery particles comprising benefit agent delivery particles, wherein at least 90% of the particles are smaller than 20pm, wherein said particles comprise at least 70 wt% of an insoluble inorganic material and 0.01 to 30wt% of at least one benefit agent, and wherein the particles are produced by co-precipitating said inorganic insoluble material in the presence of the at least one benefit agent in situ.
  • at least 90% of the particles range in size from 15pm to 20pm.
  • the aforesaid particles formed by co-precipitating the insoluble inorganic material in the presence of at least one benefit agent in situ results in the benefit agent being incorporated or embedded into the particles thus formed.
  • incorporating the benefit agent containing delivery particles, formed by the aforementioned method, into a laundry detergent composition in specified amounts not only delivers an enhanced benefit but also reduces the requirement of the amount of benefit agent needed to achieve the enhanced effect or benefit in comparison to either a laundry detergent composition comprising a benefit agent adsorbed on to a surface of a carrier particle, or a laundry detergent composition comprising a benefit agent by itself blended in with the laundry detergent composition.
  • composition of the present invention thus not only provides the advantage of an even distribution of the benefit agent and that of delivering an enhanced benefit but does so by utilizing substantially lower amounts of the benefit agent, thereby driving overall cost down.
  • the present invention provides laundry detergent composition comprising benefit agent containing delivery particles that provide an improved dissolution profile of the benefit agent.
  • the improved dissolution profile of the benefit agent ensures an even distribution of the benefit agent on to a fabric treated with the aforesaid composition.
  • the present invention provides a process for preparing benefit agent containing delivery particles comprising the steps of precipitating an inorganic material in sitw, and adding at least one benefit agent during the in situ precipitation of the inorganic material; wherein the benefit agent is incorporated or embedded into the particles formed.
  • the benefit agent containing inorganic delivery particles formed by the processes of the present invention are added into a surfactant comprising base powder of a laundry detergent composition.
  • the present invention provides a method for imparting a desired benefit to a fabric, comprising the step of contacting the fabric with an aqueous solution of a laundry detergent composition comprising benefit agent containing delivery particles of the present invention, wherein at least 90% of the particles are smaller than 20pm, wherein said particles comprise at least 70 wt% of an inorganic material and 0.01 to 30wt% of at least one benefit agent, and wherein the particles are produced by precipitating said inorganic material in the presence of the at least one benefit agent in situ.
  • at least 90% of the particles range in size from 15pm to 20pm.
  • the present invention also pertains to a composition
  • a composition comprising benefit agent containing delivery particles, having a size smaller than about 20pm, wherein said particles comprise at least 70wt% of an inorganic material and 0.01 to 30wt% of at least one benefit agent.
  • the laundry detergent compositions herein are used to treat laundry items. Such compositions may be in the form of solid, either in tablet or granular form. Preferably, the laundry detergent composition herein are granular laundry detergent compositions.
  • Surfactant containing base powder of the laundry detergent composition is used herein to describe all the intermediate products of the fabric treatment composition before the benefit agent containing delivery particles of the present invention are added to the laundry detergent composition.
  • the present invention provides a laundry detergent composition for the improved delivery of a benefit agent to a fabric comprising: benefit agent containing delivery particles, wherein the benefit agent containing delivery particles comprise of an insoluble inorganic material and at least one benefit agent.
  • the composition preferably comprises further optional ingredients.
  • the insoluble inorganic material has a solubility of 20 mg/L or less in water at 25 °C, more preferably the insoluble inorganic material has a solubility of 15 mg/L or less in water at 25 °C.
  • the composition comprises at least one benefit agent.
  • the benefit agent may be selected from polymers, bleach, optical brighteners, hueing agents, perfume or a combination thereof.
  • Suitable polymers include carboxylate polymers, soil release polymers, anti- redeposition polymers, cellulosic polymers, care polymers and any combination thereof.
  • the composition may comprise a carboxylate polymer, such as a maleate/acrylate random copolymer or polyacrylate homopolymer.
  • Suitable carboxylate polymers include polyacrylate homopolymers having a molecular weight of from 4,000 Da to 9,000 Da, maleate/acrylate random copolymers having a molecular weight of from 50,000 Da to I 00,000 Da, or from 60,000 Dato 80,000 Da.
  • Another suitable carboxylate polymer is a co- polymer that comprises: (i) from 50 to less than 98 wt% structural units derived from one or more monomers comprising carboxyl groups; (ii) from 1 to less than 49 wt% structural units derived from one or more monomers comprising sulfonate moieties; and (iii) from 1 to 49 wt3 ⁇ 4 structural units derived from one or more types of monomers selected from ether bond-containing monomers represented by formulas (I) and (II):
  • R 0 represents a hydrogen atom or CH3 group
  • R represents a CH2 group, CH2CH2 group or single bond
  • X represents a number 0-5 provided X represents a number 1-5 when R1 is a single bond
  • R1 is a hydrogen atom or C1 to C20 organic group
  • R 0 represents a hydrogen atom or CH3 group
  • R represents a CH2 group, CH2CH2 group or single bond
  • X represents a number 0-5
  • R1 is a hydrogen atom or C1 to C20 organic group. It may be preferred that the polymer has a weight average molecular weight of at least 50kDa, or even at least 70kDa. Soil Release Polymers
  • composition may comprise a soil release polymer.
  • a suitable soil release polymer has a structure as defined by (I), (II) or (III):
  • a, b and c are from 1 to 200; d, e and fare from 1 to 50;
  • Ar is a 1 ,4-substituted phenylene
  • sAr is 1 ,3-substituted phenylene substituted in position 5 with SOsMe;
  • Me is Li, K, Mg/2, Ca/2, AI/3, ammonium, mono-, di-, tri-, or tetra alkylammonium wherein the alkyl groups are C1 -C 18 alkyl or C2-C10 hydroxyal). ⁇ :yl, or mixtures thereof;
  • R1 , R2, R3, R4, R5 and R6 are independently selected from Hor C1-C18 n- or iso-alkyl; and R7 is a linear or branched C1-C18 alkyl, or a linear or branched C2-C30 alkenyl, or a cycloalkyl group with 5 to 9 carbon atoms, or a Cg- C3o aryl group, or a C6-C3o arylalkyl group.
  • Suitable soil release polymers are sold by Clariant under the TexCare® series of polymers, TexCare® SRN240 and TexCare® SRA300.
  • Other suitable soil release polymers are sold by Solvay under the Repel-o-Tex® series of polymers, e.g. Repel-o- Tex® SF2 and Repel-o-Tex®.
  • Suitable anti-redeposition polymers include polyethylene glycol polymers and/or polyethyleneimine polymers.
  • Suitable polyethylene glycol polymers include random graft co-polymers comprising: (i) hydrophilic backbone comprising polyethylene glycol; and (ii) hydrophobic side chain(s) selected from the group consisting of: C4-C25 alkyl group, polypropylene, polybutylene, vinyl ester of a saturated C1-C6 mono-carboxylic acid, C1-C6 alkyl ester of acrylic or methacrylic acid, and mixtures thereof.
  • Suitable polyethylene glycol polymers have a polyethylene glycol backbone with random grafted polyvinyl acetate side chains.
  • the average molecular weight of the polyethylene glycol backbone can be in the range of from 2,000 Da to 20,000 Da, or from 4,000 Da to 8,000 Da.
  • the molecular weight ratio of the polyethylene glycol backbone to the polyvinyl acetate side chains can be in the range of from 1 :1 to 1 :5, or from 1 :1.2 to 1 :2.
  • the average number of graft sites per ethylene oxide units can be less than 1 , or less than 0.8, the average number of graft sites per ethylene oxide units can be in the range of from 0.5 to 0.9, or the average number of graft sites per ethylene oxide units can be in the range of from 0.1 to 0.5, or from 0.2 to 0.4.
  • a suitable polyethylene glycol polymer is Sokalan HP22. Suitable polyethylene glycol polymers are described in WO0S/007320.
  • Suitable cellulosic polymers are selected from alkyl cellulose, alkyl alkoxyalkyl cellulose, carboxyalkyl cellulose, alkyl carboxyalkyl cellulose, sulphoalkyl cellulose, more preferably selected from carboxymethyl cellulose, methyl cellulose, methyl hydroxyethyl cellulose, methyl carboxymethyl cellulose, and mixtures thereof.
  • Suitable carboxymethyl celluloses have a degree of carboxymethyl substitution from 0.5 to 0.9 and a molecular weight from 100,000 Da to 300,000 Da. Suitable carboxymethyl celluloses have a degree of substitution greater than 0.65 and a degree of blockiness greater than 0.45, e.g. as described in WO09/154933.
  • Suitable care polymers include cellulosic polymers that are cationically modified or hydrophobically modified. Such modified cellulosic polymers can provide anti-abrasion benefits and dye lock benefits to fabric during the laundering cycle.
  • Suitable cellulosic polymers include cationically modified hydroxyethyl cellulose.
  • Other suitable care polymers include dye lock polymers, for example the condensation oligomer produced by the condensation of imidazole and epichlorhydrin, preferably in ratio of 1 :4:1.
  • a suitable commercially available dye lock polymer is Polyquart® FDI (Cognis).
  • Other suitable care polymers include amino-silicone, which can provide fabric feel benefits and fabric shape retention benefits.
  • Suitable bleach includes sources of hydrogen peroxide, bleach activators, bleach catalysts, pre-formed peracids and any combination thereof.
  • a particularly suitable bleach includes a combination of a source of hydrogen peroxide with a bleach activator and/or a bleach catalyst.
  • Suitable sources of hydrogen peroxide include sodium perborate and/or sodium percarbonate.
  • Suitable bleach activators include tetra acetyl ethylene diamine and/or alkyl oxybenzene sulphonate.
  • the composition may comprise a bleach catalyst.
  • Suitable bleach catalysts include oxaziridinium bleach catalysts, transistion metal bleach catalysts, especially manganese.
  • Suitable pre-form peracids include phthalimido-peroxycaproic acid. However, it is preferred that the composition is substantially free of pre-formed peracid.
  • Suitable fluorescent brighteners include: di-styryl biphenyl compounds, e.g. Tinopal® CBS-X, di-amino stilbene di-sulfonic acid compounds, e.g. Tinopal® DMS pure Xtra and Blankophor® HRH, and Pyrazoline compounds, e.g. Blank:ophor® SN, and coumarin compounds, e.g. Tinopal® SWN.
  • di-styryl biphenyl compounds e.g. Tinopal® CBS-X
  • di-amino stilbene di-sulfonic acid compounds e.g. Tinopal® DMS pure Xtra and Blankophor® HRH
  • Pyrazoline compounds e.g. Blank:ophor® SN
  • coumarin compounds e.g. Tinopal® SWN.
  • Preferred brighteners are: sodium 2 (4-styryl-3- sulfophenyl)-2H-napthol[1 ,2-d]triazole, disodium 4,4'-bis ⁇ [(4-anilino-6-(N methyl-N-2 hydroxyethyl)amino 1 ,3,5- triazin-2-yl)]amino ⁇ stilbene-2- 2' disulfonate, disodium 4,4'- bis ⁇ [(4-anilino-6-morpholino-1 ,3,5-triazin-2-yl)]amino ⁇ stilbene-2- 2' disulfonate, and disodium 4,4'- bis(2-sulfostyryl)biphenyl.
  • a suitable fluorescent brightener is CJ.
  • Fluorescent Brightener 260 which may be used in its beta or alpha crystalline forms, or a mixture of these forms.
  • the composition may also comprise a chelant selected from diethylene triamine pentaacetate, diethylene triamine penta (methyl phosphonic acid), ethylene diamine-N'N' - disuccinic acid, ethylene diamine tetraacetate, ethylene diamine tetra(methylene phosphonic acid) and hydroxyethane di(methylene phosphonic acid).
  • a preferred chelant is ethylene diamine-N'N'-disuccinic acid (EDDS) and/or hydroxyethane diphosphonic acid (HEDP).
  • the composition preferably comprises ethylene diamine-N'N'- disuccinic acid or salt thereof.
  • the ethylene diamine-N'N' -disuccinic acid is in S,S enantiomeric form.
  • the composition comprises 4,5-dihydroxy-m- benzenedisulfonic acid disodium salt.
  • Preferred chelants may also function as calcium carbonate crystal growth inhibitors such as: 1 -hydroxyethanediphosphonic acid (HEDP) and salt thereof; N,N-dicarboxymethyl-2- aminopentane-1 ,5-dioic acid and salt thereof; 2- phosphonobutane-1 ,2,4-tricarboxylic acid and salt thereof; and combination thereof.
  • Suitable hueing agents include small molecule dyes, typically falling into the Colour Index (CJ) classifications of acid, direct, basic, reactive (including hydrolysed forms thereof) or solvent or disperse dyes, for example classified as Blue, Violet, Red, Green or Black, and providing the desired shade either alone or in combination.
  • CJ Colour Index
  • Preferred such hueing agents include Acid Violet 50 (AV50), Direct Violet 9, 66 and 99, Solvent Violet 13 and any combination thereof.
  • AV50 Acid Violet 50
  • AV50 Direct Violet 9, 66 and 99
  • Solvent Violet 13 any combination thereof.
  • Many hueing agents are known and described in the art which may be suitable. Suitable hueing agents may be alkoxylated.
  • Suitable dye transfer inhibitors include polyamine N-oxide polymers, copolymers of N- vinylpyrrolidone and N-vinylimidazole, polyvinylpyrrolidone, polyvinyloxazolidone, polyvinylimidazole and mixtures thereof. Preferred are poly(vinyl pyrrolidone),
  • Suitable commercially available dye transfer inhibitors include PVP-KI5 and K30 (Ashland), Sokalan® HP165, HP50, HP53, HP59, HP56K, HP56, HP66 (BASF), Chromabond® S-400, S403E and S-100 (Ashland).
  • Suitable perfumes comprise perfume materials selected from the group: (a) perfume materials having a ClogP of less than 3.0 and a boiling point of less than 250°C (quadrant 1 perfume materials); (b) perfume materials having a ClogP of less than 3.0 and a boiling point of 250°C or greater (quadrant 2 perfume materials); (c) perfume materials having a ClogP of 3.0 or greater and a boiling point ofless than 250°C (quadrant 3 perfume materials); (d) perfume materials having a ClogP of 3.0 or greater and a boiling point of 250°C or greater (quadrant 4 perfume materials); and (e) mixtures thereof.
  • the perfume may be in the form of a perfume delivery technology. Such delivery technologies further stabilize and enhance the deposition and release of perfume materials from the laundered fabric. Such perfume delivery technologies can also be used to further increase the longevity of perfume release from the laundered fabric. Suitable perfume delivery technologies include: perfume microcapsules, pro-perfumes, polymer assisted 30 deliveries, molecule assisted deliveries, fiber assisted deliveries, amine assisted deliveries, cyclodextrin, starch encapsulated accord, zeolite and other inorganic carriers, and any mixture thereof. A suitable perfume microcapsule is described in W02009/101593.
  • the inorganic materials of the invention may be any known inorganic compound.
  • inorganic compounds which can especially suitably be used include oxides of metals of Group III, IV or VIII of the periodic table such as aluminum, titanium, zirconium, hafnium, tin, lead, iron, cobalt and nickel; and oxides of half metals of Group III or IV of the periodic table such as boron, silicon and germanium. (It should be understood that in the present specification and the appended claims, the term "metals" denote such half metals as well.)
  • compound oxides may also be used.
  • Examples include compound oxides of metals of Group III, IV or VI 11 of the periodic table with each other, and compound oxides of the above metals with metals of Group I, II or V.
  • the metals selected from the metals of Group I, II and V of the periodic table but generally, lithium, sodium, potassium, magnesium, calcium, strontium, barium, phosphorus, antimony, bismuth, vanadium, niobium and tantalum are preferred.
  • metal components of Group III, IV or VIII of the periodic table are preferably main components. Compound oxides containing at least 80 mole % of these metals are especially preferred.
  • Carbonates of metals such as calcium carbonate and magnesium carbonate and sulfates of metals such as barium sulfate and strontium sulfate may also be used as the inorganic compound constituting the inorganic materials.
  • the inorganic material is calcium carbonate.
  • the hydrophilic material of the present invention is modified by a hydrophobic coating.
  • hydrophobic coatings are fatty acids, silicones, glycerides, esters, surfactants.
  • the laundry detergent composition of the invention comprises an anionic surfactant or a mixture of anionic surfactants.
  • Anionic surfactants are included in the composition for primary cleaning action by emulsifying the oil attached to the substrate.
  • Any non-soap anionic surfactant known in the art for use in laundry detergents may be used herein. In general, these surfactants are described in well known textbooks like "Surface Active Agents” Vol. 1 , by Schwartz & Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, and/or the current edition of "McCutcheon's Emulsifiers and Detergents” published by Manufacturing Confectioners Company or in "Tenside- Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981 .
  • a suitable class of anionic surfactants are water-soluble salts, particularly alkali metal (eg. sodium or potassium), ammonium and alkylolammonium salts of organic sulphuric acid mono-esters and sulphonic acids having in the molecular structure a branched or straight chain alkyl group and condensations products thereof containing 8 to 22 carbon atoms or an alkylaryl group containing 6 to 20 carbon atoms in the alkyl part.
  • alkali metal eg. sodium or potassium
  • ammonium and alkylolammonium salts of organic sulphuric acid mono-esters and sulphonic acids having in the molecular structure a branched or straight chain alkyl group and condensations products thereof containing 8 to 22 carbon atoms or an alkylaryl group containing 6 to 20 carbon atoms in the alkyl part.
  • Preferred anionic surfactants include higher alkyl aromatic sulphonates such as higher alkyl benzene sulphonates containing from 6 to 20 carbon atoms in the alkyl group in a straight or branched chain, particular examples of which are higher alkyl benzene sulphonates or of higher-alkyl toluene, xylene or phenol sulphonates, alkyl naphthalene sulphonates, diamyl naphthalene sulphonate, and dinonyl naphthalene sulphonate; alkyl sulphates containing 8 to 22 carbon atoms and alkyl ether sulphates containing from 1 to 10 ethylene oxide or propylene oxide, preferably 2 to 3 ethylene oxide units per molecule.
  • higher alkyl aromatic sulphonates such as higher alkyl benzene sulphonates containing from 6 to 20 carbon atoms in the alkyl group in a straight or
  • Non-limiting examples of the anionic surfactants include any of the common anionic surfactants such as linear or modified, e. g., branched alkylbenzene sulphonates, alkylpoly(ethoxylates), sodium lauryl ether sulphates, methyl ester sulphonates, primary alkyl sulphates or mixtures thereof.
  • the common anionic surfactants such as linear or modified, e. g., branched alkylbenzene sulphonates, alkylpoly(ethoxylates), sodium lauryl ether sulphates, methyl ester sulphonates, primary alkyl sulphates or mixtures thereof.
  • the non-soap anionic surfactant is present in the detergent composition in a
  • concentration of 5 to 60% preferably not less than 10%, more preferably not less than 12%, still more preferably not less than 15% but typically not more than 40%, preferably not more than 35% or even not more than 30% by weight of the total composition.
  • Anionic surfactant of the present invention may be combined with another surfactant generally chosen from non-ionic, cationic, amphoteric or zwitterionic surfactants.
  • anionic surfactant In view of the anionic character of the anionic surfactant, cationic, amphoteric or zwitterionic surfactants when added are added at concentrations that do not hinder the performance of the composition.
  • Suitable non-ionic surfactants include water soluble aliphatic ethoxylated nonionic surfactants commercially known, including the primary aliphatic alcohol ethoxylates and secondary aliphatic alcohol ethoxylates.
  • nonionic surfactants include, but are not limited to, the Neodol (trade mark, ex Shell) ethoxylates, which are higher aliphatic, primary alcohol containing about 9 to 15 carbon atoms, such as C9 to C1 1 alkanol condensed with 4 to 10 moles of ethylene oxide (Neodol 91-8 or Neodol 91-5), C12-13 alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5), C12-15 alkanol condensed with 12 moles ethylene oxide (Neodol 25-12), C14-15 alkanol condensed with 13 moles ethylene oxide (Neodol 45-13), and the like.
  • Neodol trade mark, ex Shell
  • ethoxylates which are higher aliphatic, primary alcohol containing about 9 to 15 carbon atoms, such as C9 to C1 1 alkanol condensed with 4 to 10 moles of ethylene oxide (Neo
  • Such ethoxamers have an HLB (hydrophobic lipophilic balance) value of about 8 to 15 and give good O/W emulsification, whereas ethoxamers with HLB values below 7 contain less than 4 ethyleneoxide groups and tend to be poor emulsifiers and poor detergents.
  • HLB hydrophobic lipophilic balance
  • Suitable amphoteric surfactants include derivatives of aliphatic secondary and tertiary amines containing an alkyl group of 8 to 18 carbon atoms and an aliphatic radical substituted by an anionic water-solubilizing group, such as sodium 3-dodecylamino- propionate, sodium 3-dodecylaminopropane sulphonate and sodium N-2-hydroxydodecyl- N-methyltaurate.
  • Suitable cationic surfactants are quaternary ammonium salts according to the present invention are quaternary ammonium salts characterised in that the ammonium salt has the general formula: R1 R2R3R4N+X- wherein R1 is a C12 to C18 alkyl group, each of R2, R3 and R4 independently is a C1 to C3 alkyl group and X is an inorganic anion.
  • R1 is preferably a C14 to C16 straight chain alkyl group, more preferably C16.
  • R2-R4 are preferably methyl groups.
  • the inorganic anion is preferably chosen from halide, sulphate, bisulphate or OH-.
  • a quaternary ammonium hydroxide is considered to be a quaternary ammonium salt. More preferably the anion is a halide ion or sulphate, most preferably a chloride or sulphate. Cetyl-trimethylammonium chloride is a specific example of a suitable compound and commercially abundantly available.
  • quaternary ammonium cationic surfactant is the class of benzalkonium halides, also known as alkyldimethylbenzylammonium halides.
  • the most common type being benzalkonium chloride, also known as alkyldimethylbenzylammonium chloride (or ADBAC).
  • Suitable zwitterionic surfactants include derivatives of aliphatic quaternary ammonium, sulphonium and phosphonium compounds having an aliphatic radical of from 8 to 18 carbon atoms and an aliphatic radical substituted by an anionic water-solubilising group, for instance 3-(N-N-dimethyl-N-hexadecylammonium) propane-1 -sulphonate betaine, 3- (dodecylmethyl sulphonium) propane-1 -sulphonate betaine and 3- (cetylmethylphosphonium) ethane sulphonate betaine.
  • anionic water-solubilising group for instance 3-(N-N-dimethyl-N-hexadecylammonium) propane-1 -sulphonate betaine, 3- (dodecylmethyl sulphonium) propane-1 -sulphonate betaine and 3- (cetylmethylphosphonium) ethane sulphonate betaine.
  • the additional surfactant replaces 0.5 to 15% by weight, preferably 5 to 10% by weight of the anionic surfactant.
  • the laundry detergent compositions herein preferably also contain a builder, which is preferably a non-phosphate species; accordingly, the builder herein preferably is selected from aluminosilicate ion exchangers (zeolites), and water-soluble monomeric or oligomeric carboxylate chelating agents such as citrates, succinates, oxydisuccinates, as well as mixtures of the above species.
  • a builder which is preferably a non-phosphate species; accordingly, the builder herein preferably is selected from aluminosilicate ion exchangers (zeolites), and water-soluble monomeric or oligomeric carboxylate chelating agents such as citrates, succinates, oxydisuccinates, as well as mixtures of the above species.
  • Suitable builder materials include alkali metal carbonates, bicarbonates and silicates, organic phosphonates, amino polyalkylene phosphonates and amino polycarboxylates, ethylene diamine tetraacetic acid and nitrilotriacetic acid.
  • Suitable water-soluble organic salts are the homo- or co-polymeric polycarboxylic acids or their salts in which the polycarboxylic acid comprises at least two carboxyl radicals separated from each other by not more than two carbon atoms.
  • Examples of such salts are polyacrylates of MW 2000 to 5000 and their copolymers with maleic anhydride, such copolymers having a molecular weight of from 20,000 to 70,000, especially about 40,000.
  • the invention pertains to preparing a benefit agent containing delivery particle comprising the steps of: precipitating an inorganic particle in sitw, and adding the benefit agent during the insitu precipitation of the inorganic particle, wherein the benefit agent is incorporated into the particle formed; and adding the benefit-agent incorporated inorganic particle formed into a surfactant comprising base powder of the laundry detergent composition.
  • the benefit agent containing delivery particles of the present invention are prepared in situ by various processing routes.
  • at least one benefit agent is already present in the same medium as in which the insoluble inorganic material is present, for e.g., a solution of calcium carbonate.
  • One such processing route of forming the particles of the present invention comprises bubbling carbon dioxide gas (which might be that driven off during the calcination step) through milk of lime.
  • the milk of lime may be formed either by dissolving calcium oxide or calcium hydroxide in water.
  • the benefit agent may first be dissolved into water prior to forming the milk of lime and carbon dioxide is purged through the solution at a particular flow rate. Carbon dioxide dissolves in the liquid to contribute the carbonate ion. Since milk of lime comprises a saturated solution of calcium hydroxide, which has a pH of about 12, calcium carbonate impregnated with the benefit agent is formed and precipitates out of the solution.
  • Another such processing route comprises the addition of an ice-cold sodium carbonate solution to the milk of lime whereby insoluble calcium carbonate and soluble caustic soda are formed.
  • the benefit agent may be present in the solution of the milk of lime and upon addition of the sodium carbonate solution forms calcium carbonate particles incorporating or impregnated with the benefit agent.
  • the benefit agent may be pre- dissolved in the sodium carbonate solution before being added to the milk of lime.
  • the third such processing route referred to herein involves the reaction of milk of lime with ammonium chloride to form a solution of calcium chloride and ammonium hydroxide.
  • the solution is then heated whereby the ammonium hydroxide decomposes into water and ammonia, and the ammonia is driven off from the solution as a gas. Residual solid impurities which do not react in the solution are usually removed as by conventional settling procedures.
  • the solution of calcium chloride is then contacted with a solution of sodium carbonate (preferably also free of solids) whereby calcium carbonate is precipitated and sodium chloride is formed.
  • the benefit agent may be pre-dissolved in the calcium chloride solution, before the solution is contacted with the solution of sodium carbonate.
  • the benefit agent may be pre-dissolved in the sodium carbonate solution before contacting with the calcium chloride solution.
  • calcium carbonate particles incorporating or impregnated with the benefit agent precipitate out of solution.
  • the slurry with precipitated calcium carbonate particles with the benefit agent embedded within the particles is then either filtered, dried and crushed or spray dried to get fine particles.
  • the product from the process mentioned above is sieved through desired size sieve and the oversized particles are processed again along with fresh material to further reduce the particle size to desired range.
  • An alternative processing route for preparing calcium carbonate is by reacting a carbonate salt of alkali earth metal and calcium salt of chloride or nitrate.
  • the carbonate source can be preferably either sodium or potassium ion.
  • the benefit agent may also be adsorbed on to a pre-formed inorganic insoluble particle.
  • the process comprises the steps of dissolving the benefit agent in water. Adding pre- formed calcium carbonate particles having desired particle size into the same solution to form a slurry. This is followed by mixing the slurry for a sufficient time to ensure adsorption of the benefit agent on to the pre-formed calcium carbonate particles. The slurry is then either filtered and oven dried to get the final particle or spray dried to remove the moisture to get the final particle with the benefit agent adsorbed on to it.
  • the inorganic insoluble benefit agent containing delivery particles are further coated with a hydrophobic coating.
  • these particles are first coated with the hydrophobic coating prior to mixing with the benefit agent.
  • the coating may be done in a fluidized bed, pan granulator, concrete mixer etc. This helps in tagging the benefit agents on to the inorganic particle.
  • the diameter of the benefit agent containing delivery particles obtained by the processing methods described herein is measured using a Malvern mastersizer. Malvern
  • mastersizer works on the principle of laser diffraction technology.
  • Malvern uses a principle of feret diameter approach to calculate the diameter.
  • the benefit agent containing delivery particles prepared by the process of the present invention range in size between 1 pm to 20 pm in diameter. Preferably, at least 90% of said particles range in size between 15 to 20pm.
  • the benefit agent containing delivery particles of the invention comprise at least 50 wt% of an inorganic material. Preferably, the benefit agent containing delivery particles of the invention comprise at least 70wt % of an inorganic material.
  • the benefit agent containing delivery particles of the invention comprise between 0.1 to 30 wt % of at least one benefit agent.
  • the benefit agent containing delivery particles of the invention comprise between 0.1 to 20 wt% of the benefit agent.
  • the ratio of the benefit agent to that of the inorganic material ranges from 0.1 :100 to 20:100.
  • the ratio of the benefit agent to that of the inorganic material is 0.1 :100 to 10:100.
  • the ratio of the laundry detergent composition to the benefit agent containing delivery particles is from 100:0.1 to 100:20. In a preferred embodiment the ratio of the laundry detergent composition to the benefit agent containing delivery particles is from 100:0.1 to 100:10.
  • the invention in a third aspect, relates to a method for imparting a desired benefit to a fabric, comprising the step of contacting the fabric with an aqueous solution of the laundry detergent composition comprising: benefit agent delivery particles, wherein at least 90% of the particles are of less than 20pm, wherein said particles comprise at least 70wt% of an inorganic material and 0.1 to 20wt% of at least one benefit agent, and wherein the particles are produced by precipitating said inorganic material in the presence of the at least one benefit agent.
  • at least 90% of the particles range in size from 15pm to 20pm.
  • composition of the present invention can take different physical forms, e.g. solid, gel or paste.
  • the composition of the present invention is solid.
  • the solid rinse aid composition of the present invention preferably is a shaped solid article (e.g. a bar), a granulate or a powder.
  • the composition of the present invention is in a granulate form.
  • Precipitate of calcium carbonate can be formed either by bubbling carbon dioxide in a solution of calcium hydroxide or reacting sodium carbonate and calcium chloride or alternatively, potassium carbonate and calcium chloride.
  • the following reactions represent the aforementioned methods, respectively:
  • Formulation C was prepared by dissolving AV50 in water followed by addition of calcium oxide to form a slurry. Carbon di-oxide was purged through the slurry comprising calcium oxide and AV50 at a flow rate of 5.4 liters per minute.
  • Formulation 01 or the comparative was prepared by dissolving AV50 into water followed by addition of pre-formed calcium carbonate. The slurry was mixed for 30 minutes.
  • control is a physical blend of soluble inorganic carrier and benefit agent. All the options were compared against it.
  • Formulation A, B and C are the in-situ formed particle calcium carbonate particle with the benefit agent incorporated or embedded within these particles and Formulation 1 is with preformed calcium carbonate particles having particle size distribution in the aforesaid range, where the benefit agent is simply adsorbed on to the surface of these particles as opposed to embedded within the particles.
  • Leaching kinetics of the products was measured by adding 0.17g of the particles, formed by each of the different methods of the present invention detailed herein, into 11 of distilled water and the water was stirred using an overhead stirrer at a constant speed of 100 rpm. At regular time intervals, solution was withdrawn, by means of a syringe and collected in Tarson tubes. The tubes were centrifuged at 1000rpm for 5 min and the supernatant liquid was taken for measuring the dye concentration using UV spectrophotometry. (UV-Sic, Perkin Elmer). Calibration curve was pre-generated for measuring the dye concertation directly from the plot.
  • Particle size distribution was measured in Malvern mastersizer using hydro mode. Water was used as a solvent. The particles were added into the analyser with sonication, to remove any agglomerates. The particle size distribution is given in below table.
  • D (0.1 ), D (0.5) and D (0.9) means 10%., 50% and 90% of the total particle having particle size in that particular range.
  • D (4,3) means is volume weighted mean of the distribution. D (4,3) requires when the distribution is not a gaussian distribution.
  • washing experiments were carried out in terg-o-tometer. 500ml of water with hardness maintained at 6FH by addition of Calcium chloride dihydrate and magnesium chloride hexahydrate was utilized. WFK 10A standard fabric was chosen for the experiment. Standard OMO detergent powder was taken. The fabric cleaning composition of the present invention comprising the benefit agent containing delivery particles, formed by the different processing routes described herein, was included at 1.1 % level and also at 0.55%. 20min of soaking, 15min of wash and 2 rinses each 2min, was maintained during the experiment. The experiment was continued for 10 wash cycle. The data is provided in the table below. After washing, the R460 and Lab values (both UV excluded and UV included) were measured using Macbeth spectrophotometer. Ab value was calculated (w.r.t. to untreated fabric). More negative values indicate more whiteness. Experiments were also carried out at 50% lower particle dosage and similar results were obtained.
  • the particles made through sodium carbonate and potassium carbonate could hold the performance better than processed through pre-formed route or control.

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
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  • Organic Chemistry (AREA)
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  • Inorganic Chemistry (AREA)
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Abstract

L'invention concerne une composition de détergent à lessive comprenant un agent bénéfique contenant des particules de distribution, au moins 90 % des particules étant plus petites qu'environ 20 µm, lesdites particules comprenant au moins 70 % massiques d'un matériau inorganique et de 0,1 à 20 % massiques d'au moins un agent bénéfique, et les particules étant produites par co-précipitation dudit matériau inorganique en présence dudit agent bénéfique in situ. La présente invention concerne également un procédé pour conférer un bénéfice souhaité à une étoffe, comprenant l'étape consistant à mettre en contact l'étoffe avec une solution aqueuse de la composition de détergent à lessive susmentionnée comprenant un agent bénéfique contenant des particules de distribution.
PCT/EP2019/071261 2018-08-14 2019-08-07 Matières inorganiques fonctionnalisées pour une administration améliorées d'agents bénéfiques à une étoffe WO2020035378A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR112021002702-5A BR112021002702A2 (pt) 2018-08-14 2019-08-07 composição detergente para lavanderia, processo para preparar partículas de distribuição contendo agente de benefício, processo para preparação de uma composição detergente para lavanderia, método para fornecer um benefício desejado a um tecido e composição compreendendo agente de benefício
EP19748568.3A EP3837339B1 (fr) 2018-08-14 2019-08-07 Matières inorganiques fonctionnalisées pour une administration améliorées d'agents bénéfiques à une étoffe
CN201980053448.0A CN112585252B (zh) 2018-08-14 2019-08-07 用于改善有益剂向织物的递送的功能化无机物
PH12021550177A PH12021550177A1 (en) 2018-08-14 2021-01-22 Functionalized inorganics for improved delivery of benefit agents to a fabric
ZA2021/00630A ZA202100630B (en) 2018-08-14 2021-01-28 Functionalized inorganics for improved delivery of benefit agents to a fabric

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EP18188864.5 2018-08-14
EP18188864 2018-08-14

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WO2020035378A1 true WO2020035378A1 (fr) 2020-02-20

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PH (1) PH12021550177A1 (fr)
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ZA (1) ZA202100630B (fr)

Citations (10)

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Publication number Priority date Publication date Assignee Title
WO1996021719A1 (fr) * 1995-01-11 1996-07-18 Unilever Plc Particules contenant du parfum
EP0750220A2 (fr) * 1995-06-23 1996-12-27 Eastman Kodak Company Procédé pour la préparation des émulsions à haute teneur en chlorure pour l'imagerie digitale
US6133215A (en) 1997-08-28 2000-10-17 Ciba Specialty Chemicals Corporation Fluorescent whitening agent
WO2005007320A1 (fr) 2003-07-16 2005-01-27 Sumitomo Metal Industries, Ltd. Procede de coulage en continu pour alliage a base de magnesium
EP1618936A1 (fr) * 2004-07-23 2006-01-25 Wacker Chemie AG Compositions anti-mousse
WO2006029676A1 (fr) * 2004-09-13 2006-03-23 Unilever Plc Compositions detergentes et procedes de fabrication associes
US20080207476A1 (en) 2005-09-02 2008-08-28 Henkel Kommanditgesellschaft Auf Aktien Particles containing perfume having improved fragrance properties
WO2009101593A2 (fr) 2008-02-15 2009-08-20 The Procter & Gamble Company Particule d'administration
US20090247449A1 (en) * 2008-03-26 2009-10-01 John Allen Burdis Delivery particle
WO2009154933A2 (fr) 2008-06-20 2009-12-23 The Procter & Gamble Company Composition de blanchisserie

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DE4322229A1 (de) * 1993-07-05 1995-01-12 Cognis Bio Umwelt Umhüllte Enzymzubereitung für Wasch- und Reinigungsmittel
AU4641599A (en) * 1998-07-29 2000-02-21 Procter & Gamble Company, The Particulate compositions having a plasma-induced, water-soluble coating and process for making same
US20160137956A1 (en) * 2014-11-17 2016-05-19 The Procter & Gamble Company Benefit agent delivery compositions

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Publication number Priority date Publication date Assignee Title
WO1996021719A1 (fr) * 1995-01-11 1996-07-18 Unilever Plc Particules contenant du parfum
EP0750220A2 (fr) * 1995-06-23 1996-12-27 Eastman Kodak Company Procédé pour la préparation des émulsions à haute teneur en chlorure pour l'imagerie digitale
US6133215A (en) 1997-08-28 2000-10-17 Ciba Specialty Chemicals Corporation Fluorescent whitening agent
WO2005007320A1 (fr) 2003-07-16 2005-01-27 Sumitomo Metal Industries, Ltd. Procede de coulage en continu pour alliage a base de magnesium
EP1618936A1 (fr) * 2004-07-23 2006-01-25 Wacker Chemie AG Compositions anti-mousse
WO2006029676A1 (fr) * 2004-09-13 2006-03-23 Unilever Plc Compositions detergentes et procedes de fabrication associes
US20080207476A1 (en) 2005-09-02 2008-08-28 Henkel Kommanditgesellschaft Auf Aktien Particles containing perfume having improved fragrance properties
WO2009101593A2 (fr) 2008-02-15 2009-08-20 The Procter & Gamble Company Particule d'administration
US20090247449A1 (en) * 2008-03-26 2009-10-01 John Allen Burdis Delivery particle
WO2009154933A2 (fr) 2008-06-20 2009-12-23 The Procter & Gamble Company Composition de blanchisserie

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Title
H. STACHE: "McCutcheon's Emulsifiers and Detergents", 1981, MANUFACTURING CONFECTIONERS COMPANY
SCHWARTZPERRY: "Surface Active Agents", vol. 1, 1949, INTERSCIENCE

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EP3837339A1 (fr) 2021-06-23
CN112585252B (zh) 2022-04-12
BR112021002702A2 (pt) 2021-05-11
CN112585252A (zh) 2021-03-30
EP3837339B1 (fr) 2022-07-27
PH12021550177A1 (en) 2022-02-14
ZA202100630B (en) 2022-08-31

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