WO2022258453A1 - Composition de pastille - Google Patents

Composition de pastille Download PDF

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Publication number
WO2022258453A1
WO2022258453A1 PCT/EP2022/064894 EP2022064894W WO2022258453A1 WO 2022258453 A1 WO2022258453 A1 WO 2022258453A1 EP 2022064894 W EP2022064894 W EP 2022064894W WO 2022258453 A1 WO2022258453 A1 WO 2022258453A1
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WO
WIPO (PCT)
Prior art keywords
unit dose
tablet
water
hydrogel
weight
Prior art date
Application number
PCT/EP2022/064894
Other languages
English (en)
Inventor
Girish Muralidharan
Gaurav Pathak
Rajeesh Kumar Ramachandran
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 EP22731589.2A priority Critical patent/EP4352195A1/fr
Priority to BR112023025567A priority patent/BR112023025567A2/pt
Priority to CN202280040415.4A priority patent/CN117425720A/zh
Publication of WO2022258453A1 publication Critical patent/WO2022258453A1/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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0065—Solid detergents containing builders
    • C11D17/0073—Tablets
    • 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
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0065—Solid detergents containing builders
    • C11D17/0073—Tablets
    • C11D17/0091—Dishwashing tablets
    • 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
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
    • C11D17/044—Solid compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—Carbonates ; Bicarbonates
    • 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
    • C11D3/37—Polymers
    • 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
    • C11D3/37—Polymers
    • C11D3/3788—Graft polymers

Definitions

  • the present invention relates to a detergent tablet.
  • a detergent tablet for providing a liquid detergent composition on dissolution in water.
  • compositions Consumers spend considerable amount of time and effort in cleaning their households. They prefer to use different cleaning compositions depending on the substrates to be cleaned. Typically, such compositions differ in terms of their ingredients such as, detersive agents, builders, perfume, soil release polymers etc. Moreover, a particular composition is available in different formats such as, powder, liquid, tablet, pod etc.
  • a composition in tablet format contains concentrated detergent. Consumers dissolves the tablet in water to form a liquid detergent composition and use it. Tablets are compact in size. Hence requires less packaging material compared to a liquid or powder detergent having similar level of detersive agent. Often the packaging materials includes polyethylene, polyethylene terephthalate etc. which are predominantly sourced from non-renewable resources. There are continuous efforts to reduce such consumptions, and tablet format perfectly fits in to this. Moreover, when a tablet is formulated as a unit dose, it provides relief to consumer from adjudging and dosing right amount of composition in water. Hence tablet format is gaining popularity in this space.
  • a tablet contains a unit dose of concentrated detergent, which forms a liquid detergent composition on dissolution in water.
  • concentrated detergent which forms a liquid detergent composition on dissolution in water.
  • a tablet is formed by compacting a homogenised powder comprising the required ingredients.
  • a high compression force leads to hard tablets which fails to dissolve fast.
  • lower compression force leads to loosely packed ingredients which helps in faster dissolution, however, does not have the required strength. It is desirable to have a fast-dissolving tablet with sufficient strength.
  • One way to improve the performance of tablets is to incorporate a disintegrant in the composition which disintegrates the tablet in water, helping in faster dissolution.
  • a disintegrant in the composition which disintegrates the tablet in water, helping in faster dissolution.
  • most of the disintegrants are insoluble in water leaving residue upon dissolution in the liquid composition, which is not preferred by consumers.
  • EP 1 642 960 (Unilever N.V, 2006) describes a detergent composition in the form of a tablet, which includes a semi-solid region and a solid tablet body, characterised in that a barrier layer formed from a hydrated polymeric material is interposed between the semi-solid region and the solid tablet body.
  • the barrier layer according to the invention has superior stability and appearance, as well as good barrier properties.
  • It is yet another object of the present invention is to a provide a unit dose tablet which forms a liquid detergent composition on dissolution in water.
  • a tablet comprising a surfactant and a hydrogel, dissolves fast in water providing a transparent liquid detergent.
  • Ws is the weight of the hydrogel after swelling
  • WD is the weight of the dried hydrogel
  • the present invention provides a process for forming a liquid detergent comprising the steps of providing water in a container, adding a tablet according to the first aspect into the water, wherein the ratio of tablet to water is in the range from 1 :5 to 1 : 100 by weight.
  • the present invention provides the use of a unit dose tablet according to the first aspect for dishwashing.
  • unit dose implies an amount of a composition suitable for single time use.
  • cross-polymer preferably refers to a polymer formed by cross-linking of two or more copolymers, which contains repeating units of one or more monomers.
  • stimulus as used herein, preferably refers to environmental factors influencing the phase behaviour of a compound. For example, swelling-deswelling of certain hydrogels are affected by environmental factors such as, pH, temperature, ionic strength etc.
  • the tablet according to the present invention comprises a surfactant for providing detersive benefit.
  • the amount of the surfactant is in the range 10 to 70% by weight of the tablet.
  • higher the amount of surfactant is better the performance of the tablet.
  • the amount of surfactant is in the range 15 to 70% by weight, even more preferably 20 to 70% by weight, yet more preferably 25 to 70% by weight of the tablet.
  • the amount of surfactant is 30 to 60% by weight of the tablet.
  • the surfactant in the tablet is selected from anionic, non-ionic, cationic, amphoteric surfactant and mixture thereof.
  • the surfactant is an anionic surfactant.
  • Anionic surfactant suitable for the present invention includes salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term “alkyl” being used to include the alkyl portion of higher acyl radicals. Examples of such materials include alkyl sulphates, alkyl ether sulphates, alkaryl sulfonates, alpha-olefin sulfonates and mixtures thereof.
  • the alkyl radicals preferably contain from 10 to 18 carbon atoms and may be unsaturated.
  • the alkyl ether sulphates may contain from one to ten ethylene oxide or propylene oxide units per molecule, and preferably contain one to three ethylene oxide units per molecule.
  • the suitable anionic surfactant includes alkylbenzene sulfonates.
  • Preferably in an embodiment suitable for dishwash comprises 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 sulpho-phenyl 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.
  • 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), monoisopropanolamine (MIPA). Mixtures of such counterions may also be employed. Sodium and potassium are preferred.
  • the suitable anionic surfactant includes alkyl sulphate surfactant (PAS), such as non- ethoxylated primary and secondary alkyl sulphates with an alkyl chain length of from 10 to 18.
  • PAS alkyl sulphate surfactant
  • the tablet suitable for laundry application may contain alkyl ether sulphates having a straight or branched chain alkyl group having 10 to 18, more preferably 12 to 14 carbon atoms and containing an average of 1 to 3 ethylene oxide (EO) units per molecule.
  • alkyl ether sulphates having a straight or branched chain alkyl group having 10 to 18, more preferably 12 to 14 carbon atoms and containing an average of 1 to 3 ethylene oxide (EO) units per molecule.
  • EO ethylene oxide
  • a preferred example is sodium lauryl ether sulphate (SLES) in which the predominantly C12 lauryl alkyl group has been ethoxylated with an average of 3 EO units per molecule.
  • SLES sodium lauryl ether sulphates
  • the alkyl ether sulphates may be used alone or in combination with any other anionic surfactant.
  • the anionic surfactant is selected from primary alkyl sulphate, alkyl benzene sulphonates, alkyl ether sulphates and mixture thereof.
  • the amount of the anionic surfactant is in the range up to 100% by weight of the total amount of the surfactant. More preferably, the amount of anionic surfactant is in the range 10 to 90%, even more preferably 20 to 80%, most preferably 30 to 70% by weight of the total amount of surfactant.
  • the tablet according to the present invention may preferably comprises a non-ionic, cationic and amphoteric surfactant in addition to anionic surfactant.
  • Suitable non-ionic surfactants include water soluble aliphatic ethoxylated non-ionic surfactants including the primary aliphatic alcohol ethoxylates and secondary aliphatic alcohol ethoxylates.
  • a higher alcohol e.g., an alkanol
  • non-ionic surfactants include, but are not limited to, the Neodol (trade mark, ex Shell), which are higher aliphatic, primary alcohol containing about 9 to 15 carbon atoms, such as C9 to C11 alkanol condensed with 4 to 10 moles of ethylene oxide (Neodol 91-8 or Neodol 91-5), C12 to C13 alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5), C12 to C15 alkanol condensed with 12 moles ethylene oxide (Neodol 25-12), C14 to C15 alkanol condensed with 13 moles ethylene oxide (Neodol 45-13), and the like.
  • Neodol trade mark, ex Shell
  • 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 ethylene oxide groups and tend to be poor emulsifiers and poor detergents.
  • HLB hydrophobic lipophilic balance
  • alkyl polyglycosides(APG) which are sugar derivatives of fatty alcohol.
  • APG alkyl polyglycosides
  • surfactants are decyl glucoside, lauryl glucoside, myristyl glucoside.
  • Suitable cationic surfactants are quaternary ammonium salts.
  • quaternary ammonium salts are characterised in that the ammonium salt has the general formula: R1R2R3R4N+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, R3 and R4 are preferably methyl groups.
  • the inorganic anion (X-) is preferably chosen from halide, sulphate, bisulphate or hydroxide.
  • 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 amphoteric 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.
  • amphoteric surfactants suitable for the present invention include cocoamidopropyl betaine (CAPB), cocoamidopropyl amine oxide (CAPAO), cocodiethanol amide (CDEA) and cocomonoethanol amide (CMEA).
  • CAPB cocoamidopropyl betaine
  • CAPAO cocoamidopropyl amine oxide
  • CDEA cocodiethanol amide
  • CMEA cocomonoethanol amide
  • the tablet according to the present invention comprises a hydrogel.
  • Hydrogels are crosslinked polymers capable of absorbing water from 15 to 1500 times of their own weight. Without wishing to be limited by theory it is believed that the hydrogel in the tablet swells in contact with water, thereby disintegrates the tablet. This results in dissolving the detersive actives quickly in water.
  • hydrogels having higher water absorbing capacity provides faster dissolution of the tablet.
  • water absorbing capacity or swelling of a hydrogel is expressed in terms of swelling ratio, defined by,
  • Ws is the weight of the hydrogel after swelling or fully hydrated
  • W D is the weight of the dried hydrogel.
  • higher values of SR indicate higher water absorbing capacity.
  • the swelling ratio (SR) of the hydrogels suitable for the present invention is at least 50, more preferably, at least 100 and most preferably at least 150.
  • the hydrogel has a swelling ratio at most 1500, more preferably 1200 and most preferably 1000.
  • the amount of the hydrogel is in the range of 0.1 to 10% by weight of the tablet. More preferably, the amount of the hydrogel is in the range, 0.3 to 9% by weight, even more preferably 0.5 to 8% by weight, most preferably 0.8 to 7% by weight of the tablet.
  • the hydrogel is a cross-polymers comprising monomers selected from n-alkyl acrylamide, alkyl acrylic acid, ethylene oxide and mixture thereof.
  • the alkyl acrylic acid is C2 to C8 alkyl acrylic acid.
  • the alkyl acrylic acid is selected from ethyl acrylic acid, n-propyl acrylic acid, n-butyl acrylic acid and mixture thereof.
  • the n-alkyl acrylamide is C3 to C8 alkyl acrylamide.
  • swellable disintegrants such as, cellulose derivative, pyrrolidone based, starch, clay
  • swellable disintegrants such as, cellulose derivative, pyrrolidone based, starch, clay
  • swellable disintegrants are known in tablet context. They swell in contact with water, thereby accelerate the disintegration of tablets.
  • water absorption or swelling ratio of such disintegrants are significantly less compared to the hydrogel as claimed.
  • such disintegrants typically do not form gel like hydrogels, hence they do not involve de-swelling characteristic.
  • the hydrogel is responsive to a stimulus selected from pH, temperature, ionic strength or combination thereof.
  • a stimulus selected from pH, temperature, ionic strength or combination thereof.
  • the hydrogel in the tablet first swells in contact with water to disintegrate the tablet and then de swells in response to one of said stimuli forming a homogenous liquid, which blend with the surfactant and water to form a transparent liquid detergent.
  • the tablet comprises a water-soluble inorganic salt.
  • the inorganic salt provide the ionic strength to the liquid.
  • the water-soluble salt does not leave any residue, thereby forming transparent liquid detergent.
  • the hydrogel in contact with water, the hydrogel rapidly absorbs water and swells, thus disintegrate the tablet.
  • the hydrogels are responsive to external stimuli.
  • the stimulus is ionic strength. Wthout wishing to be limited by theory, it is believed that the water-soluble salt provides desired ionic strength to de-swells the hydrogel. Thereby the tablet completely dissolves in water providing a transparent liquid detergent composition.
  • the solubility of the inorganic salt is in the range of 0.5 g/100 ml_ to 75 g/100 ml_ at 25 °C, preferably 1 g/100 ml_ to 70 g /100 ml_ at 25 °C, more preferably 5 g/100 ml_ to 65 g/100 ml_ at 25 °C, even more preferably 10 g/100 ml_ to 60 g/100 ml_.
  • the water-soluble inorganic salt suitable for the invention includes anhydrous forms or hydrates of salts of mono or divalent alkali metals, preferably anhydrous form, or hydrates of salts of mono alkali metals, more preferably wherein the mono alkali metals is sodium or potassium.
  • the anhydrous forms or hydrates of salts of mono alkali metals is selected from the group consisting of sodium chloride, sodium sulphate, sodium carbonate, potassium chloride, potassium sulphate, potassium carbonate and mixtures thereof.
  • the amount of the inorganic salt is in the range of 0.1 to 40% by weight of the composition. More preferably, the amount of the inorganic salt is in the range 0.5 to 35% by weight, even more preferably 0.8 to 30% and most preferably 1.0 to 25% by weight of the tablet.
  • the tablet according to the present invention comprises an effervescent system.
  • the effervescence provides a cue to consumers about formation of the liquid detergent composition.
  • the effervescent system comprises a carbonate or bicarbonate salt and a compound selected from an organic acid, a salt of organic acid, a salt of inorganic acid and mixture thereof.
  • the carbonate or bicarbonate salt is selected from sodium carbonate, potassium carbonate, calcium carbonate, sodium bicarbonate, potassium bicarbonate, calcium carbonate, calcium bicarbonate and magnesium carbonate as well as mixtures thereof.
  • organic acid is selected from citric acid, tartaric acid, fumaric acid, malic acid, adipic acid, succinic acid, and mixture thereof.
  • a preferred effervescent system is sodium bicarbonate and citric acid.
  • the effervescent system may comprise a salt of an organic acid, such as sodium or potassium salt of an organic acid.
  • the effervescent system preferably comprises a salt of inorganic acid.
  • the salt of inorganic acid is an acid salt, which formed by incomplete neutralisation of a bivalent or trivalent acid. Examples of such salts include sodium bisulphate, potassium bisulphate, mono-sodium phosphate etc.
  • effervescent systems are as follows: a) a combination of sodium bicarbonate and citric acid; and b) a combination of sodium bicarbonate and sodium bisulphate.
  • the amount of the effervescent system is in the range from 1 to 40% by weight of the tablet. More preferably the amount of the effervescent system is in the range from 5 to 35% by weight and most preferably 10 to 30% by weight of the tablet.
  • the ratio of the bicarbonate salt to the organic acid or salt of organic acid or salt of inorganic acid is in the range 10:1 to 1:10, more preferably 5:1 to 1:5, most preferably 3:1 to 1:3 by weight.
  • the tablet according to the present invention is formulated for laundering.
  • laundering herein refers to treating or washing fabrics.
  • the tablet may be used directly for laundering, wherein a consumer drops the tablet in a bucket of water forming a wash liquor and soak their laundry load in the wash liquor and subsequently wash it.
  • the amount of surfactant should be sufficient to clean the fabrics, however, should not leave excess detersive, which may force the consumer to rinse the fabric multiple time. Therefore, in such embodiments, preferably the amount of surfactant is in the range 10 to 40% by weight, more preferably 10 to 30%, most preferably 10 to 20% by weight of the tablet.
  • the consumer may prepare a liquid detergent by dissolving the tablet in a secondary container and store it for multiple use.
  • the amount of surfactant is in the range 20 to 70% by weight, more preferably, 30 to 70% by weight and more preferably 40 to 70% by weight of the tablet.
  • the anionic surfactant in the tablet is selected from alkyl benzene sulphonates, alkyl ether sulphates and mixture thereof.
  • the tablet according to the present invention may further comprises other ingredients such as, builders, sequestrants, soil release polymers, perfume, enzyme, fluorescer. preservative etc.
  • the tablet according to the present invention may be used for hard surface cleaning.
  • Hard surface cleaning compositions are generally used for cleaning surfaces such as, kitchen utensils, dishes, kitchen platform, tabletop etc.
  • One of such embodiments is a tablet for dishwashing.
  • the anionic surfactant in the tablet is selected from primary alkyl sulphate, alkyl benzene sulphonates and mixture thereof.
  • the tablet may be used for machine dishwashing, where a consumer dose the tablet in dishwashing machine.
  • the tablet may not contain an effervescent system.
  • tablets according to the present invention suitable for dishwashing further comprises a solvent for providing degreasing benefit.
  • the tablet according to the present invention may be provided with a container.
  • the tablet may be dosed in the container containing sufficient water.
  • the tablet dissolves in the water thereby providing a cleaning composition.
  • the container may be equipped with a spray head or foam engine, which helps in dispensing the cleaning composition directly on the surface as spray or foam.
  • a cleaning product comprising a tablet as claimed herein along with a foam dispenser.
  • the tablet dissolves in water providing a liquid cleaning composition, which thereupon may be filled in the dispenser.
  • the tablet may be dosed in the dispenser and water is added, which forms a liquid cleaning composition inside the dispenser.
  • the foam dispenser herein may be a pressurised gas-based or foam trigger-based dispenser.
  • the foam dispenser comprises a container to hold the composition and a foam trigger, which includes a trigger lever, a pump, a mixing chamber and a nozzle.
  • the pump comprises a piston moving in a cavity against a spring.
  • the cavity is in fluid communication with the container and the mixing chamber, wherein it has one-way valves which allow the composition to flow from the container to the mixing chamber.
  • the foam trigger is actuated by pressing the trigger lever, which in turn pressed the piston against the spring thereby pushing the composition stored in the cavity to the mixing chamber.
  • the composition mixed with air and pass through a mesh before dispensing out of the nozzle as foam.
  • the spring push back the piston, thereby the empty cavity fills with the composition flowing from the container.
  • Foam dispensers equipped with foam trigger rely on the pump action, hence do not require a pressurised gas.
  • the foam dispenser comprises a pressurised gas, stored along with the composition in the container.
  • a pressurised gas stored along with the composition in the container.
  • Such dispenser is activated by opening a one-way valve, thereby releases the gas along with composition through a nozzle and dispenses a foam.
  • the tablet according to the invention is single dose format.
  • the consumer drops the tablet directly in to the water to form a liquid detergent.
  • the tablet is packed in a water-soluble primary packaging, which dissolve in contact with water releasing the tablet into the water.
  • tablets are prepared following conventional tablet making process.
  • a homogenised dry powder is prepared by mixing the ingredients in specified ratio.
  • the powder is filled in a die-block and compressed to form the tablet.
  • a rotary press or a hydraulic press maybe employed to compress the powder to tablet.
  • the pressure applied during the compression is in the range 1 to 100 kg-f/cm 2 , more preferably 2.5 to 75 kg-f/cm 2 , even more preferably 5 to 50 kg-f/cm 2 , and most preferably 7.5 to 30 kg-f/cm 2 .
  • a method for forming a liquid detergent comprising the steps of providing water in a container, adding a tablet according to the present invention, wherein the ratio of the tablet to water is in the range of 1 : 5 to 1 : 100 by weight. More preferably the ratio of the tablet to water is in the range 1:10 to 1: 70 by weight, most preferably 1:15 to 1:50 by weight.
  • a consumer prepares the liquid detergent by dissolving the tablet in a secondary container and store it for multiple use.
  • a use of a tablet according to present invention for dishwashing Preferably the tablet is dissolved in a bowl of water to form a liquid dishwashing detergent and subsequently used by consumers for hand dishwashing. Examples:
  • Dry mix compositions were prepared according to the recipes provided in table 1. In subsequent step, 19 gm of each dry mix composition was taken in die-block and compressed by applying a pressure of 10 kg-f/cm 2 , thereby forming the tablet.
  • Table 1 Formulation 1 is according to the invention and formulation A and B are comparative examples.
  • each tablet was added to 1 litre water and allowed to dissolve. The time of dissolution of each tablet was noted using a stopwatch.

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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)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention concerne une pastille détergente, en particulier une pastille détergente destinée à fournir une composition détergente liquide en cas de dissolution dans l'eau. L'invention concerne une pastille monodose comprenant un tensioactif, de 0,1 à 10 % en poids d'hydrogel et un sel inorganique hydrosoluble, l'hydrogel ayant un taux de gonflement supérieur ou égal à 50, le taux de gonflement étant défini par la formule : SR (taux de gonflement) = (WS-WD)/WD, Ws étant le poids de l'hydrogel après gonflement, et WD étant le poids de l'hydrogel séché, d'un tensioactif et d'un hydrogel. L'invention concerne en outre un procédé de formation d'une composition détergente liquide comprenant les étapes consistant à introduire de l'eau dans un récipient, ajouter ladite pastille dans l'eau, le rapport de la pastille à l'eau se trouvant dans la plage de 1/5 à 1/100 en poids.
PCT/EP2022/064894 2021-06-07 2022-06-01 Composition de pastille WO2022258453A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP22731589.2A EP4352195A1 (fr) 2021-06-07 2022-06-01 Composition de pastille
BR112023025567A BR112023025567A2 (pt) 2021-06-07 2022-06-01 Tablete de dose unitária, processo de formação de uma composição detergente líquida e uso de um tablete
CN202280040415.4A CN117425720A (zh) 2021-06-07 2022-06-01 片剂组合物

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21177953.3 2021-06-07
EP21177953 2021-06-07

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WO1998003064A1 (fr) * 1996-07-23 1998-01-29 Fmc Corporation Composition desintegrante pour solides dispersibles
WO1998055590A1 (fr) * 1997-06-06 1998-12-10 Unilever Plc Compositions detergentes
EP1004661A1 (fr) * 1998-11-11 2000-05-31 DALLI-WERKE WÄSCHE- und KÖRPERPFLEGE GmbH & Co. KG Granulé de haute densité, procédé pour sa production, son utilisation en tant que désintégrant pour tablettes
DE10002010A1 (de) * 2000-01-19 2001-07-26 Cognis Deutschland Gmbh Tablettensprengmittel
EP1642960A1 (fr) 2004-10-01 2006-04-05 Unilever N.V. Comprimés detergents
WO2021013394A1 (fr) * 2019-07-23 2021-01-28 Henkel Ag & Co. Kgaa Corps moulés contenant une substance active et procédé de fabrication de ceux-ci

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WO1998003064A1 (fr) * 1996-07-23 1998-01-29 Fmc Corporation Composition desintegrante pour solides dispersibles
WO1998055590A1 (fr) * 1997-06-06 1998-12-10 Unilever Plc Compositions detergentes
EP1004661A1 (fr) * 1998-11-11 2000-05-31 DALLI-WERKE WÄSCHE- und KÖRPERPFLEGE GmbH & Co. KG Granulé de haute densité, procédé pour sa production, son utilisation en tant que désintégrant pour tablettes
DE10002010A1 (de) * 2000-01-19 2001-07-26 Cognis Deutschland Gmbh Tablettensprengmittel
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