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EP2496676A1 - Compositions pour lessive - Google Patents

Compositions pour lessive

Info

Publication number
EP2496676A1
EP2496676A1 EP09748116A EP09748116A EP2496676A1 EP 2496676 A1 EP2496676 A1 EP 2496676A1 EP 09748116 A EP09748116 A EP 09748116A EP 09748116 A EP09748116 A EP 09748116A EP 2496676 A1 EP2496676 A1 EP 2496676A1
Authority
EP
European Patent Office
Prior art keywords
perfume
micro
particles
perfume particles
fibrous cellulose
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.)
Granted
Application number
EP09748116A
Other languages
German (de)
English (en)
Other versions
EP2496676B1 (fr
Inventor
Paul Ferguson
Christopher Clarkson Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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
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Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP2496676A1 publication Critical patent/EP2496676A1/fr
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Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/50—Perfumes
    • C11D3/502—Protected perfumes
    • C11D3/505—Protected perfumes encapsulated or adsorbed on a carrier, e.g. zeolite or clay
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin

Definitions

  • This invention relates to improvement to laundry compositions. More particularly, the invention is directed to laundry compositions comprising perfume and micro- fibrous cellulose.
  • Perfume is an important ingredient of laundry products.
  • the perfume provides a pleasing fragrance for the consumer and is a sensorial cue that the product has performed its intended function, providing clean and fresh laundered garments.
  • Perfume however is an expensive component, and a problem in the field is that perfume deposition from laundry products is inefficient.
  • EP 1 844 759(A1 ) discloses compositions which increase perfume deposition comprising a fragrance material, a derivatised polysaccharide, a branched polyglycerol -modified silicone and a surfactant. It is believed therein that the perfume deposition enhancement is attributable to the synergistic effect between the derivatised polysaccharide and the branched polyglycerol-modified silicone.
  • US patent application US 2007/0197779 discloses a structurant consisting of bacterially produced micro-fibrous cellulose combined with carboxy methyl cellulose and xanthan gum as dispersion aids.
  • US 2008/0108541 and US 2008/0146485 disclose surfactant systems which use micro-fibrous cellulose to suspend particulates therein.
  • the applicants have found that micro-fibrous cellulose can be used to increase the deposition of perfume on fabric, thus solving the aforementioned problem.
  • this invention is directed to a laundry detergent composition
  • a laundry detergent composition comprising:- a) from 5 to 80 wt.% of an anionic and/or nonionic surfactant; and, b) from 0.001 to 5 wt.% of micro-fibrous cellulose; and,
  • perfume particles from 0.025 to 10 wt.% of perfume particles. with the proviso that when the perfume particles are present at a level of 1 .5 wt.% and have a polymeric melamine-formaldehyde shell, then the perfume particles additionally comprise a deposition aid.
  • a second aspect of the invention relates to a process to make the laundry detergent composition of the first aspect comprises mixing together in any order 5 to 80 wt.% of an anionic and/or nonionic surfactant, 0.001 to 5 wt.% micro-fibrous cellulose and 0.025 to 10 wt.% perfume particles.
  • Another aspect of the invention relates to the use of micro-fibrous cellulose to increase the deposition of perfume particles.
  • a further aspect of the invention relates to a method of treating textile comprising :- a) provision of an aqueous wash liquor incorporating the composition of any one of claims 1 to 6; and,
  • the term “comprising” means including, made up of, composed of, consisting and/or consisting essentially of.
  • a formula shall be considered physically "stable" when after 1 week at 21 degrees Celsius it exhibits no signs of phase separation.
  • micro-fibrous cellulose is added to the surfactant as a pre-mix in water.
  • perfume particles are post-dosed to the surfactant.
  • the emulsion can be included in laundry detergent products taking a number of forms.
  • the laundry detergent composition may be a main wash composition, a rinse composition, or a pre- or after-wash treatment composition, all of which may be dilutable or non-dilutable.
  • Main wash compositions are preferred.
  • the compositions of the invention may be in any physical form e.g. a solid such as a powder or granules, a tablet, a solid bar, a paste, gel or liquid, especially, an aqueous based liquid.
  • the compositions may be used in laundry compositions, especially in liquid, gel, powder or tablet laundry composition.
  • the pH range of the composition is from pH 7-12, preferably from pH 8.5 to 9.5. It is desirable to buffer the formulation at whatever the target pH of the composition is.
  • Another aspect of the invention relates to the use of micro-fibrous cellulose to increase the deposition of perfume particles.
  • the preferred substrate for deposition is clothes.
  • micro-fibrous cellulose is particularly applicable for compositions which comprise perfume particles which are in the form of perfume encapsulates.
  • micro-fibrous cellulose is also especially applicable for perfume particles (particularly perfume encapsulates) which have been modified by a deposition aid.
  • the deposition aid in this case is preferably a polysaccharide, more preferably locust bean gum.
  • Preferred micro-fibrous celluloses suitable for use in embodiments of the present invention include those described in US 2007/019779 (CP Kelco). Particular preferred materials are those obtained from Acetobacter. These materials are available in the marketplace from CP Kelco (Atlanta, Georgia USA).
  • the micro-fibrous cellulose has an individual fibre diameter of from about 40nm to ⁇ . ⁇ , for example 0.1 m.
  • micro-fibrous cellulose is non-ionic.
  • the micro-fibrous cellulose is present at a level of from 0.001 to 5 wt.%, preferably from 0.01 to 2.5 wt.%, more preferably 0.01 to 1 wt.%, optionally from 0.02 to 0.75 wt.%, for example from 0.025 to 0.4 wt.%.
  • the perfume is present in the form of perfume particles. These particles are incorporated in the laundry composition at a level of from 0.001 to 10 wt.%, preferably 0.0025 to 3 wt.%, most preferably 0.05 to 2 wt.%.
  • the perfume is typically present in an amount of from 10 to 85 wt.% by total weight of the perfume particle, preferably from 20 to 75 wt.% of the particle.
  • the perfume suitably has a molecular weight of from 50 to 500.
  • perfume particles preferably polymeric core-shell perfume encapsulates
  • many other types of particle can be envisaged as the carrier.
  • Perfumes have been adsorbed onto a clay or zeolite material that is then admixed into particulate detergent compositions:
  • U.S. Pat. No. 4,539,135 discloses particulate laundry compounds comprising a clay or zeolite material carrying perfume.
  • Other perfume delivery systems are taught by WO 97/34982 and WO 98/41607, published by The Procter & Gamble.
  • WO 97/34982 discloses particles comprising perfume loaded zeolite and a release barrier, which is an agent derived from a wax and having a size (i.e., a cross- sectional area) larger than the size of the pore openings of the zeolite carrier.
  • WO 98/41607 discloses glassy particles comprising agents useful for laundry or cleaning compositions and a glass derived from one or more of at least partially- water-soluble hydroxylic compounds.
  • Silicas amorphous silicates, crystalline nonlayer silicates, layer silicates, calcium carbonates, calcium/sodium carbonate double salts, sodium carbonates, sodalites, alkali metal phosphates, pectin, chitin microbeads,
  • carboxyalkylcelluloses gums, resins, gelatin, gum arabic, porous starches, modified starches, carboxyalkyl starches, cyclodextrins, maltodextrins, synthetic polymers such as polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA), cellulose ethers, polystyrene, polyacrylates, polymethacrylates, polyolefins, aminoplast polymers, crosslinkers and mixtures thereof can all provide a basis for perfume particles.
  • PVP polyvinyl pyrrolidone
  • PVA polyvinyl alcohol
  • cellulose ethers polystyrene
  • polyacrylates polymethacrylates
  • polyolefins aminoplast polymers
  • crosslinkers and mixtures thereof can all provide a basis for perfume particles.
  • Aminoplast core-shell particles are particularly preferred.
  • Suitable particle sizes for the benefit agent range from nanometre scale to micron scale and even to millimetre scale. Typical particle sizes range from 1 micron to 1 mm, with, for encapsulated perfumes, particle sizes in the range of 5-50 microns being preferred, especially particles of 10-30 microns. Larger particles can be employed in the form of functional, but visible "beads", typically of a size range of 0.1 -5mm.
  • the perfume particles When the perfume particles are present at a level of 1 .5 wt.% and have a polymeric melamine-formaldehyde shell, then the perfume particles additionally comprise a deposition aid.
  • Perfume particle deposition aid When the perfume particles are present at a level of 1 .5 wt.% and have a polymeric melamine-formaldehyde shell, then the perfume particles additionally comprise a deposition aid.
  • Perfume particle deposition aid When the perfume particles are present at a level of 1 .5 wt.% and have a polymeric melamine-formaldehyde shell, then the perfume particles additionally comprise a deposition aid.
  • Perfume particle deposition aid When the perfume particles are present at a level of 1 .5 wt.% and have a polymeric melamine-formaldehyde shell, then the perfume particles additionally comprise a deposition aid.
  • Perfume particle deposition aid When the perfume particles are present at a level of
  • the perfume particles are preferably provided with a deposition aid.
  • a deposition aid can preferably be incorporated in the shell of an encapsulated perfume particle.
  • the deposition aid is preferably attached to the particle by means of a covalent bond, entanglement or strong adsorption, preferably by a covalent bond or entanglement and most preferably by means of a covalent bond.
  • entanglement as used herein is meant that the deposition aid is for example adsorbed onto the particle as polymerisation proceeds and the particle grows in size, part of the adsorbed deposition aid becomes buried within the interior of the particle.
  • the deposition aid can be nonionic, cationic or anionic.
  • the deposition aid is a polysaccharide.
  • the polysaccharide preferably has a ⁇ -1 ,4-linked backbone and is substantive to cellulose.
  • the polysaccharide is cellulose, a cellulose derivative, or another ⁇ - 1 ,4-linked polysaccharide having an affinity for cellulose, such as polymannan, polyglucan, polyglucomannan, polyxyloglucan and polygalactomannan or a mixture thereof. More preferably, the polysaccharide is selected from the group consisting of polyxyloglucan and polygalactomannan.
  • preferred polysaccharides are locust bean gum, tamarind xyloglucan, guar gum or mixtures thereof. Most preferably, the deposition aid is locust bean gum.
  • Useful components of the perfume include materials of both natural and synthetic origin. They include single compounds and mixtures. Specific examples of such components may be found in the current literature, e.g., in Fenaroli's Handbook of Flavor Ingredients, 1975, CRC Press; Synthetic Food Adjuncts, 1947 by M. B. Jacobs, edited by Van Nostrand; or Perfume and Flavor Chemicals by S.
  • perfume in this context is not only meant a fully formulated product fragrance, but also selected components of that fragrance, particularly those which are prone to loss, such as the so-called 'top notes'.
  • the perfume component could also be in the form of a profragrance.
  • WO 2002/038120 relates to photo-labile pro-fragrance conjugates which upon exposure to electromagnetic radiation are capable of releasing a fragrant species.
  • Top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80 [1955]). Examples of well known top-notes include citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol. Top notes typically comprise 15 to 25 wt.% of a perfume composition and in those embodiments of the invention which contain an increased level of top-notes it is envisaged at that least 20 wt.% would be present within the encapsulate.
  • Typical perfume components which it is advantageous to encapsulate include those with a relatively low boiling point, preferably those with a boiling point of less than 300°C, preferably 100 to 250°C.
  • perfume components which have a low LogP (i.e. those which will be partitioned into water), preferably with a LogP of less than 3.0.
  • materials, of relatively low boiling point and relatively low LogP have been called the "delayed blooming" perfume ingredients and include the following materials:
  • perfume components it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components from the list given of delayed blooming perfumes given above present in the encapsulated perfume.
  • a pro-fragrance is any material which comprises a fragrance precursor that can be converted into a fragrance.
  • Suitable pro-fragrances are those that generate perfume components which are aldehydes. Aldehydes useful in perfumery include but are not limited to
  • perfumery include many components also used in perfumery, including components of essential oils such as Clary Sage, Eucalyptus, Geranium, Lavender, Mace Extract, Neroli, Nutmeg, Spearmint, Sweet Violet Leaf and Valerian.
  • essential oils such as Clary Sage, Eucalyptus, Geranium, Lavender, Mace Extract, Neroli, Nutmeg, Spearmint, Sweet Violet Leaf and Valerian.
  • the perfume may be encapsulated alone or co-encapsulated with carrier materials, further deposition aids and/or fixatives.
  • Preferred materials to be co- encapsulated with the perfume include waxes, paraffins, stabilizers and fixatives.
  • An optional yet preferred component of capsule is a formaldehyde scavenger. This is particularly advantageous in capsules which may comprise formaldehyde as a consequence of their manufacturing process or components.
  • Formaldehyde scavenger is chosen from: sodium bisulfite, urea, cysteine,
  • cysteamine lysine, glycine, serine, carnosine, histidine, glutathione, 3,4- diaminobenzoic acid, allantoin, glycouril, anthranilic acid, methyl anthranilate, methyl 4-aminobenzoate, ethyl acetoacetate, acetoacetamide, malonamide, ascorbic acid, 1 ,3-dihydroxyacetone dimer, biuret, oxamide, benzoguanamine, pyroglutamic acid, pyrogallol, methyl gallate, ethyl gallate, propyl gallate, triethanol amine, succinamide, thiabendazole, benzotriazol, triazole, indoline, sulfanilic acid, oxamide, sorbitol, glucose, cellulose, polyvinyl alcohol), polyvinyl amine), hexane diol, ethylenediamine-N,N'-bisaceto
  • the laundry composition comprises a surfactant, preferably a detersive
  • Suitable surfactants comprise nonionic surfactants and anionic surfactants.
  • surfactants used are saturated.
  • Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • Specific nonionic detergent compounds are C6 to C22 alkyl phenol- ethylene oxide condensates, generally 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic Cs to Cis primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 EO.
  • Suitable anionic detergent compounds which may be used are usually water- soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
  • suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, especially those obtained by sulphating higher Cs to Cis alcohols, produced for example from tallow or coconut oil, sodium and potassium alkyl Cg to C20 benzene sulphonates, particularly sodium linear secondary alkyl C10 to C15 benzene sulphonates; and sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
  • the preferred anionic detergent compounds are sodium C11 to C15 alkyl benzene sulphonates and sodium C12 to Cis alkyl sulphates.
  • anionic surfactants include fatty acid-based soaps containing between C8-C26 carbon atoms. Also applicable are surfactants such as those described in EP-A-328 177 (Unilever), which show resistance to salting-out, the alkyl polyglycoside surfactants described in EP-A-070 074, and alkyl
  • the total amount of surfactant present in the liquid composition is from 5 to 65 wt.%.
  • the total amount of surfactant is from 10 to 65 wt.%, preferably from 15 to 50 wt.%.
  • surfactants such as amphoteric, zwitterionic and cationic surfactants may also be present in addition to the aforementioned nonionic and/or anionic surfactants.
  • Optional Ingredients such as amphoteric, zwitterionic and cationic surfactants may also be present in addition to the aforementioned nonionic and/or anionic surfactants.
  • the laundry composition may additionally comprise one or more of the following optional ingredients.
  • the laundry composition optionally comprises from 1 to 50 wt.% of a builder.
  • the builder is present at a level of from 1 to 40 wt.%.
  • Builder materials may be selected from 1 ) calcium sequestrant materials, 2) precipitating materials, 3) calcium ion-exchange materials and 4) mixtures thereof.
  • the size is in the range 0.1 to 10 microns (as measured by The Mastersizer 2000 particle size analyzer using laser diffraction ex MalvernTM).
  • calcium sequestrant builder materials examples include alkali metal
  • polyphosphates such as sodium tripolyphosphate and organic sequestrants, such as ethylene diamine tetra-acetic acid.
  • precipitating builder materials examples include sodium orthophosphate and sodium carbonate.
  • Examples of calcium ion-exchange builder materials include the various types of water-insoluble crystalline or amorphous aluminosilicates, of which zeolites are the best known representatives, e.g. zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in
  • the composition may also contain 0-50 wt.% of a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or the other builders mentioned below. Many builders are also bleach-stabilising agents by virtue of their ability to complex metal ions.
  • a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or the other builders mentioned below.
  • Many builders are also bleach-stabilising agents by virtue of their ability to complex metal ions.
  • Zeolite and carbonate are preferred builders.
  • the composition may contain as builder a crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably a sodium aluminosilicate. This is typically present at a level of less than 15 wt.%.
  • Aluminosilicates are materials having the general formula: 0.8-1 .5 M 2 0. AI 2 O 3 . 0.8-6 SiO 2 where M is a monovalent cation, preferably sodium. These materials contain some bound water and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g.
  • the preferred sodium aluminosilicates contain 1 .5-3.5 S1O2 units in the formula above. They can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature.
  • the ratio of surfactants to aluminosilicate (where present) is preferably greater than 5:2, more preferably greater than 3:1 .
  • phosphate builders may be used. In this art the term 'phosphate' embraces diphosphate,
  • silicates such as soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from
  • the laundry detergent formulation is a non-phosphate built laundry detergent formulation, i.e., contains less than 1 wt.% of phosphate.
  • the laundry composition preferably comprises a blue or violet shading agent in the range from 0.0001 to 0.01 wt.%.
  • the shading agents reduce the perception of damage to many coloured garments and increase whiteness of white garments.
  • the shading agents are preferably selected from blue and violet dyes of the solvent disperse basic, direct and acid type listed in the colour index (Society of Dyers and Colourists and American Association of Textile Chemists and Colorists 2002).
  • a direct violet or direct blue dyes is present.
  • the dyes are bis-azo, tris-azo dyes or triphendioxazine dye.
  • the carcinogenic benzidene based dyes are not preferred.
  • the laundry composition preferably comprises a fluorescent agent (optical brightener).
  • fluorescent agents are well known and many such fluorescent agents are available commercially. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts.
  • the total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt.%, more preferably 0.01 to 0.1 wt.%.
  • Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, Di-amine stilbene di-sulphonic acid compounds, e.g. Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH, and Pyrazoline compounds, e.g.
  • Blankophor SN Preferred fluorescers are: sodium 2-(4-styryl-3-sulfophenyl)-2H- napthol[1 ,2-d]trazole, 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)]annino ⁇ stilbene-2-2' disulfonate, and disodium 4,4'-bis(2-sulfoslyryl)biphenyl. Polymers
  • the laundry composition may comprise one or more polymers.
  • examples are carboxymethylcellulose, poly(ethylene glycol), polyvinyl alcohol),
  • polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers, lauryl methacrylate/acrylic acid copolymers, and cationic polysaccharide-based polymers.
  • a liquid detergent composition may optionally include a hydrotrope, which can prevent liquid crystal formation.
  • Suitable hydrotropes include but are not limited to propylene glycol, ethanol, urea, salts of benzene sulphonate, toluene sulphonate, xylene sulphonate or cumene sulphonate.
  • Suitable salts include but are not limited to sodium, potassium, ammonium, monoethanolamine, triethanolamine.
  • the hydrotrope is selected from the group consisting of propylene glycol, xylene sulfonate, ethanol, and urea to provide optimum performance.
  • the amount of the hydrotrope is generally in the range of from 0 to 30%, preferably from 0.5 to 30%, more preferably from 0.5 to 30%, most preferably from 1 to 15%. Examples
  • Example 1 Improved perfume deposition
  • the use of micro-fibrous cellulose to enhance the deposition of perfume particles is shown in this example.
  • Encapsulted perfume particles (perfume encaps) were tested for deposition from laundry formulations with and without micro-fibrous cellulose.
  • Perfume encaps modified by addition of a locust bean gum deposition aid were also tested.
  • the micro-fibrous cellulose used was commercially available from CP Kelco.
  • Perfume encapsulates (1894.7g, 53.2% solids, 30 ⁇ particle size) and vinyl acetate (1 12g) were added, and the contents purged with nitrogen for 10 minutes, after which point the vessel and contents were left over a nitrogen blanket for the duration of the reaction.
  • the temperature was then raised to 70°C, and aqueous ascorbic acid solution (2.8g in 25g de-ionised water) together with aqueous hydrogen peroxide solution (8g, 35% active) were added to initiate the
  • Example 1 Deposition of the LBG-PVAc modified encapsulates in the
  • perfume encapsulate deposition in the presence of micro-fibrous cellulose was measured by turbidity as follows: Two sets of washes were conducted with the unmodified and LBG-PVAc modified perfume encapsulates using a laundry concentrated liquid detergent (Persil (Trademark) "Small and Mighty”). One set was tested with micro-fibrous cellulose present and one set without. 1) Preparation of Wash Solutions
  • a section of unfluoresced cotton measuring 20cm by 20cm was placed into each wash liquor and the Linitest pots were sealed.
  • the Linitest is a laboratory scale washing machine (Ex. Heraeus).
  • the equipment is designed and built to comply with the requirements for international standard test specifications. It is used for small scale detergency and stain removal testing particularly when low liquor to cloth ratios are required.
  • the model used in this case has a single rotation speed of 40rpm.
  • the carrier is capable of accommodating twelve 500ml steel containers and can be operated at
  • the Linitest comprises a 20 litre tank, control system and drive mechanism.
  • Permanent thermostatically controlled tubular heating elements in the base of the tank heat the bath liquor to the required temperature.
  • the stainless steel construction throughout ensures efficient heat transfer to the specimen containers that are mounted on a rotating horizontal carrier driven by a geared motor.
  • the rotating movement of the carrier 'throws' the liquid from one end of the container to the other in a continuous action. This movement simulates the mechanical washing process and additional mechanical action can be obtained by using steel ball bearings or discs.
  • the Linitest pots were attached to the Linitester cradle and rotated 45 minutes at 40°C to simulate the main wash. The cloths were then removed and wrung by hand and a 5ml aliquot of the remaining wash liquor was taken and the absorbance at 400nm measured using a 5cm cuvette as before. From interpolation of the initial calibration curve, the concentration of the particles remaining the liquor after the wash could be determined and hence the level deposited (wash deposition) on the cloth could be determined by difference.
  • the Linitest pots were then thoroughly rinsed and the 'wrung' cloths returned to the pots and 100ml of Wirral water was added.
  • the Linitester bath water was drained and the pots attached to the cradle and rotated for 10 minutes at ambient temperature ( ⁇ 20°C) to simulate a rinse procedure.
  • the clothes were then removed and wrung by hand.
  • a 5ml aliquot of the rinse solution was taken and the absorbance at 400nm determined.
  • the percentage loss from the cloth could be determined. This procedure was repeated to simulate and determine losses from the second rinse.
  • the Table below illustrates the results.
  • Table 1 Deposition of Perfume
  • the micro-fibrous cellulose improves the deposition of perfume, both of unmodified perfume encapsulates, and especially also for perfume encapsulates which have had their shell modified with a deposition aid.

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  • Chemical & Material Sciences (AREA)
  • 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)
  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Molecular Biology (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention concerne une composition pour détergent à lessive qui comprend a) de 5 à 80 % en poids d'un tensioactif anionique et/ou non-ionique, b) de 0,001 à 5 % en poids de cellulose micro-fibreuse, et c) de 0,025 à 10 % en poids de particules parfumées, à condition que lesdites particules parfumées soient présentes en proportion de 1,5 % en poids et possèdent une coque mélamine-formaldéhyde polymère, et que ces particules parfumées comprennent par ailleurs un auxiliaire de dépôt. L'invention porte en outre sur un procédé de réalisation de ladite composition, sur un procédé de traitement qui incorpore ladite composition, et sur l'utilisation de cellulose micro-fibreuse afin d'améliorer le dépôt de parfum.
EP09748116.2A 2009-11-05 2009-11-05 Compositions pour lessive Revoked EP2496676B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/064702 WO2011054389A1 (fr) 2009-11-05 2009-11-05 Compositions pour lessive

Publications (2)

Publication Number Publication Date
EP2496676A1 true EP2496676A1 (fr) 2012-09-12
EP2496676B1 EP2496676B1 (fr) 2016-06-29

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EP09748116.2A Revoked EP2496676B1 (fr) 2009-11-05 2009-11-05 Compositions pour lessive

Country Status (5)

Country Link
EP (1) EP2496676B1 (fr)
CN (1) CN102695786B (fr)
BR (1) BR112012010662A2 (fr)
ES (1) ES2593808T3 (fr)
WO (1) WO2011054389A1 (fr)

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Publication number Priority date Publication date Assignee Title
ES2593808T3 (es) 2009-11-05 2016-12-13 Unilever N.V. Composiciones para la colada
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WO2011054389A1 (fr) 2011-05-12
ES2593808T3 (es) 2016-12-13
EP2496676B1 (fr) 2016-06-29
CN102695786B (zh) 2014-03-05
CN102695786A (zh) 2012-09-26
BR112012010662A2 (pt) 2017-08-08

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