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WO2025002741A1 - Laundry composition - Google Patents

Laundry composition Download PDF

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Publication number
WO2025002741A1
WO2025002741A1 PCT/EP2024/065538 EP2024065538W WO2025002741A1 WO 2025002741 A1 WO2025002741 A1 WO 2025002741A1 EP 2024065538 W EP2024065538 W EP 2024065538W WO 2025002741 A1 WO2025002741 A1 WO 2025002741A1
Authority
WO
WIPO (PCT)
Prior art keywords
solid fragrance
composition according
fragrance booster
solid
booster composition
Prior art date
Application number
PCT/EP2024/065538
Other languages
French (fr)
Inventor
Shah Faisal SYED
Dhanalakshmi THIRUMENI
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.
Publication of WO2025002741A1 publication Critical patent/WO2025002741A1/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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/50—Perfumes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—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
    • C11D3/50—Perfumes
    • C11D3/502—Protected perfumes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/12—Soft surfaces, e.g. textile

Definitions

  • the present invention is in the field of solid fragrance boosters for providing fragrance in the laundry process. of the Invention
  • Solid fragrance boosters are known in the field of laundry.
  • a solid fragrance booster composition comprising: a 30 to 95 wt.% Sodium carbonate; b 0.25 to 40 wt.% ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups; c 2 to 49 wt.% water; and d 0.1 to 30 wt.% perfume.
  • composition is formed using a process selected from: extrusion, tableting, granulation, casting, pelletising, pastillation or a compression method.
  • a use of solid fragrance booster composition as described herein to deliver fragrance in the laundry process is provided.
  • a “Solid fragrance booster particle” refers to an individual article.
  • Solid fragrance booster composition refers to one or more solid fragrance booster particles.
  • the solid fragrance booster composition described herein comprises sodium carbonate (Na2COs), also known as soda ash.
  • the solid fragrance booster composition comprises 30 to 95 wt.% sodium carbonate by weight of the composition, more preferably 40 to 90 wt.% and most preferably 50 to 85 wt.% sodium carbonate by weight of the composition.
  • the sodium carbonate may be hydrated once it is mixed with the water to form, e.g. sodium monohydrate, sodium heptahydrate or sodium decahydrate.
  • the sodium carbonate is preferably a so called ‘light’ soda ash or sodium carbonate product.
  • the sodium carbonate has a poured bulk density of less than 1000 kg/m 3 , more preferably less than 900 kg/m 3 and most preferably less than 800 kg/m 3 .
  • the solid fragrance booster composition described herein comprises 0.25 to 40 wt.% ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups by weight of the composition, more preferably 0.5 to 20 wt.%, even more preferably 0.75 to 10 wt.% and most preferably 0.5 to 5 wt.% ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups by weight of the composition.
  • the ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups is preferably solid at room temperature (20°C).
  • the ethoxylated non-ionic surfactant has 15 to 80 ethoxylate groups and more preferably 20 to 60 ethoxylate groups.
  • the alcohol group of the ethoxylated non-ionic is preferably C6 to C30, more preferably C8 to C20, most preferably C10 to C18.
  • the solid fragrance booster composition described herein comprises 2 to 49 wt.% water by weight of the composition, more preferably 3 to 40 wt.% water and most preferably 4 to 30 wt.% water by weight of the composition. This refers to the weight of water added to the composition.
  • the water may associate with the sodium carbonate to form hydrated sodium carbonate. Preferably the water is deionized.
  • the solid fragrance booster composition may preferably further comprise additional inorganic salts.
  • Inorganic salts are preferably selected from divalent (for example calcium or magnesium) and trivalent (for example Aluminium) metal salts of sulphate, chlorides, nitrides and the respective hydrates. Suitable examples preferably include CaCh, CaSCU, CaNCh, MgSCU, MgCh, MgNoa, Ah(SO4), AICI3, A ⁇ NOs) and their hydrates.
  • the solid fragrance booster composition preferably comprises 1 to 40 wt.% inorganic salts, more preferably 5 to 30 wt.% inorganic salts. The salts contribute to high temperature stability.
  • the solid fragrance booster composition may further comprise silicates, such as sodium silicate, disodium silicate, etc.
  • the compositions preferably comprise 0.5 to 10 wt.% silicate by weight of the composition, more preferably 2 to 5 wt.% silicate by weight of the composition.
  • the solid fragrance booster composition comprises 0.1 to 30 wt.% perfume by weight of the composition. More preferably the compositions comprise 0.5 to 25 wt.% perfume and most preferably 2 to 20 wt.% perfume by weight of the composition.
  • Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co. It is commonplace for a plurality of perfume components to be present in a formulation. In the compositions of the present invention 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.
  • the solid fragrance booster composition may preferably comprises perfume microcapsules.
  • the composition comprises 0.1 to 10 wt.% perfume microcapsules by weight of the composition, more preferably 0.25 to 8 wt.% perfume microcapsules and most preferably 0.5 to 5 wt.% perfume microcapsules by weight of the composition.
  • the encapsulating materials preferably comprise, but are not limited to; aminoplasts, proteins, polyurethanes, polyacrylates, polymethacrylates, polysaccharides, polyamides, polyolefins, gums, silicones, lipids, modified cellulose, polyphosphate, polystyrene, polyesters or combinations thereof. More preferably the encapsulating materials comprise aminoplast, such as melamine formaldehyde or urea formaldehyde microcapsules, proteins and/or polysaccharides, or polyesters.
  • Perfume microcapsules of the present invention can be friable microcapsules and/or moisture activated microcapsules.
  • friable it is meant that the perfume microcapsule will rupture when a force is exerted.
  • moisture activated it is meant that the perfume is released in the presence of water.
  • the particles of the present invention preferably comprises friable microcapsules. Moisture activated microcapsules may additionally be present. Examples of a microcapsules which can be friable include aminoplast microcapsules.
  • Perfume components contained in a microcapsule may comprise odiferous materials and/or pro-fragrance materials. It is commonplace for a plurality of perfume components to be present in a microcapsule. In the compositions for use in the present invention it is envisaged that there will be three or more, preferably four or more, more preferably five or more, most preferably six or more different perfume components in a microcapsule. An upper limit of 300 perfume components may be applied.
  • the microcapsules may comprise perfume components and a carrier for the perfume ingredients, such as zeolites or cyclodextrins.
  • the solid fragrance booster composition may comprise an optical enhancer.
  • the optical enhancer is selected from pearlisers, dyes, colourants, pigments or combinations thereof.
  • Optical enhancers are intended to improve the aesthetics of the solid fragrance booster. They should be non-substantive to fabrics.
  • the solid fragrance booster composition may comprise individual fragrance boosters having different optical enhancers, for example the composition may comprise a mixture of blue boosters and yellow fragrance boosters.
  • the solid fragrance booster composition may comprise other fabric benefit agents in addition to perfumes. These may be selected from: silicones, softening agents, antifoams, insect repellents, shading or hueing dyes, preservatives (e.g.
  • bactericides perfume carriers, hydrotropes, anti-redeposition agents, soil-release agents, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, dyes, colorants, sunscreens, drape imparting agents, anti-static agents, sequestrants and ironing aids.
  • the solid fragrance booster composition may comprise a single solid fragrance booster particle or multiple solid fragrance booster particles.
  • the solid fragrance booster particles may be any suitable shape. Examples of suitable shapes include: spheres, hemispheres, compressed hemispheres, cylinders, cubes, cuboids, tetrahedron, cones, ellipsoid and prisms having any cross-sectional shape (triangle, pentagon, hexagon, star shapes, heart shapes, etc.).
  • the solid fragrance booster composition may comprise fragrance booster particles having of different shapes.
  • the solid fragrance booster composition may comprise a mixture of spherical particles and star shaped prism particles.
  • the solid laundry booster composition may comprise a single unit dose particle.
  • a unit dose solid laundry booster particle would have a maximum linear dimension of 60 mm and a minimum linear dimension of 5 mm.
  • the mass is preferably 6 to 20 g.
  • the solid laundry booster composition comprises a plurality (two or more) of solid laundry booster particles.
  • a solid fragrance booster particle preferably has a maximum linear dimension of 1 mm to 20 mm, preferably 2 mm to 15 mm and most preferably 3 mm to 10 mm. This dimension refers to the largest cross sectional measurement of the solid fragrance booster particle.
  • a solid fragrance booster particle preferably has a minimum linear dimension of 0.1 mm to 10mm, preferably 0.2 mm to 8 mm and most preferably 0.5 mm to 5 mm. This dimension refers to the smallest cross sectional measurement of the solid fragrance booster particle.
  • the solid fragrance booster particles may be prepared by any suitable method.
  • the ingredients may be mixed in any order. Preferably all ingredients excluding water are mixed, followed by the addition of water. Preferably the mixtures are prepared at a temperature of 15 to 70°C. The mixture is then preferably shaped into the desired shape of solid fragrance booster particles.
  • the solid fragrance booster particles may be shaped by any suitable method, these may be selected from: extrusion, tableting, granulation, casting, pelletising, pastillation or a compression method.
  • the solid laundry booster composition described herein may be used to deliver fragrance in the laundry process. Preferably they are added to the wash stage of the laundry process. Preferably the solid laundry booster composition is used to in addition to a detergent composition.
  • a liquid part was prepared by, by mixing the non-ionic surfactant in hot water. Cooling the mixture to 45°C and adding the perfume, perfume microcapsules and glycerol. Mixing continued until homogeneous.
  • a solid part was prepared by mixing the sodium carbonate, calcium sulphate and silica. Mixing continued until a uniform powder was obtained.
  • the solid and liquid parts were mixed to form a paste.
  • the paste was then cast into moulds to form the desired shape.
  • Strength was assessed: Strength was measured using texture analyzer (model TA-HDi Perfect ex. Stable Micro Systems). The texture analyzer evaluated the compression strength of an individual bead in force divided by distance, using a 25 kg load. Beads were stored at the relevant temperature for 24 hours before measurements were taken. Multiple beads were measured to calculate the average strength of beads. Table 2: Results
  • the presence of the non-ionic surfactant increased the high temperature stability of the fragrance booster.

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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)
  • Fats And Perfumes (AREA)

Abstract

A solid fragrance booster composition comprising: a) 30 to 95 wt.% sodium carbonate; b) 0.25 to 40 wt.% ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups; c) 2 to 49 wt.% water; and d) 0.1 to 30 wt.% perfume.

Description

LAUNDRY COMPOSITION
Field of the Invention
The present invention is in the field of solid fragrance boosters for providing fragrance in the laundry process.
Figure imgf000002_0001
of the Invention
Solid fragrance boosters are known in the field of laundry.
However there remains a need to improve theses solid boosters. One particular problem faced by consumers is the heat stability of the products. While the average consumer home is below 30°C most of the year, higher temperatures are not uncommon. Furthermore, in the supply chain, products may be exposed to much higher temperatures for examples in containers and lorries left in direct sunshine. Temperatures may reach 50°C or higher. of the Invention
It has been found that using hydrated sodium carbonate in combination with ethoxylated nonionic surfactant having 10 to 100 ethoxylate groups provides improved temperature stability.
According in a first aspect of the present invention is provided a solid fragrance booster composition comprising: a 30 to 95 wt.% Sodium carbonate; b 0.25 to 40 wt.% ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups; c 2 to 49 wt.% water; and d 0.1 to 30 wt.% perfume.
Also provided is a method of preparing the solid fragrance boosters described here wherein the composition is formed using a process selected from: extrusion, tableting, granulation, casting, pelletising, pastillation or a compression method. In a further aspect of the present invention is provided a use of solid fragrance booster composition as described herein to deliver fragrance in the laundry process.
Detailed Description of the Invention
These and other aspects, features and advantages will become apparent to those of ordinary skill in the art from a reading of the following detailed description and the appended claims. For the avoidance of doubt, any feature of one aspect of the present invention may be utilised in any other aspect of the invention. The word “comprising” is intended to mean “including” but not necessarily “consisting of” or “composed of.” In other words, the listed steps or options need not be exhaustive. It is noted that the examples given in the description below are intended to clarify the invention and are not intended to limit the invention to those examples per se. Similarly, all percentages are weight/weight percentages unless otherwise indicated. Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and/or use are to be understood as modified by the word “about”. Numerical ranges expressed in the format "from x to y" are understood to include x and y. When for a specific feature multiple preferred ranges are described in the format "from x to y", it is understood that all ranges combining the different endpoints are also contemplated.
A “Solid fragrance booster particle” refers to an individual article.
A “Solid fragrance booster composition” refers to one or more solid fragrance booster particles.
The solid fragrance booster composition described herein comprises sodium carbonate (Na2COs), also known as soda ash. The solid fragrance booster composition comprises 30 to 95 wt.% sodium carbonate by weight of the composition, more preferably 40 to 90 wt.% and most preferably 50 to 85 wt.% sodium carbonate by weight of the composition. The sodium carbonate may be hydrated once it is mixed with the water to form, e.g. sodium monohydrate, sodium heptahydrate or sodium decahydrate. The sodium carbonate is preferably a so called ‘light’ soda ash or sodium carbonate product. Preferably the sodium carbonate has a poured bulk density of less than 1000 kg/m3, more preferably less than 900 kg/m3 and most preferably less than 800 kg/m3.
The solid fragrance booster composition described herein comprises 0.25 to 40 wt.% ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups by weight of the composition, more preferably 0.5 to 20 wt.%, even more preferably 0.75 to 10 wt.% and most preferably 0.5 to 5 wt.% ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups by weight of the composition. The ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups is preferably solid at room temperature (20°C). Preferably the ethoxylated non-ionic surfactant has 15 to 80 ethoxylate groups and more preferably 20 to 60 ethoxylate groups. The alcohol group of the ethoxylated non-ionic is preferably C6 to C30, more preferably C8 to C20, most preferably C10 to C18.
The solid fragrance booster composition described herein comprises 2 to 49 wt.% water by weight of the composition, more preferably 3 to 40 wt.% water and most preferably 4 to 30 wt.% water by weight of the composition. This refers to the weight of water added to the composition. The water may associate with the sodium carbonate to form hydrated sodium carbonate. Preferably the water is deionized.
The solid fragrance booster composition may preferably further comprise additional inorganic salts. Inorganic salts are preferably selected from divalent (for example calcium or magnesium) and trivalent (for example Aluminium) metal salts of sulphate, chlorides, nitrides and the respective hydrates. Suitable examples preferably include CaCh, CaSCU, CaNCh, MgSCU, MgCh, MgNoa, Ah(SO4), AICI3, A^NOs) and their hydrates. The solid fragrance booster composition preferably comprises 1 to 40 wt.% inorganic salts, more preferably 5 to 30 wt.% inorganic salts. The salts contribute to high temperature stability.
The solid fragrance booster composition may further comprise silicates, such as sodium silicate, disodium silicate, etc. the compositions preferably comprise 0.5 to 10 wt.% silicate by weight of the composition, more preferably 2 to 5 wt.% silicate by weight of the composition.
The solid fragrance booster composition comprises 0.1 to 30 wt.% perfume by weight of the composition. More preferably the compositions comprise 0.5 to 25 wt.% perfume and most preferably 2 to 20 wt.% perfume by weight of the composition. Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co. It is commonplace for a plurality of perfume components to be present in a formulation. In the compositions of the present invention 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. The solid fragrance booster composition may preferably comprises perfume microcapsules. Preferably the composition comprises 0.1 to 10 wt.% perfume microcapsules by weight of the composition, more preferably 0.25 to 8 wt.% perfume microcapsules and most preferably 0.5 to 5 wt.% perfume microcapsules by weight of the composition.
The encapsulating materials, preferably comprise, but are not limited to; aminoplasts, proteins, polyurethanes, polyacrylates, polymethacrylates, polysaccharides, polyamides, polyolefins, gums, silicones, lipids, modified cellulose, polyphosphate, polystyrene, polyesters or combinations thereof. More preferably the encapsulating materials comprise aminoplast, such as melamine formaldehyde or urea formaldehyde microcapsules, proteins and/or polysaccharides, or polyesters.
Perfume microcapsules of the present invention can be friable microcapsules and/or moisture activated microcapsules. By friable, it is meant that the perfume microcapsule will rupture when a force is exerted. By moisture activated, it is meant that the perfume is released in the presence of water. The particles of the present invention preferably comprises friable microcapsules. Moisture activated microcapsules may additionally be present. Examples of a microcapsules which can be friable include aminoplast microcapsules.
Perfume components contained in a microcapsule may comprise odiferous materials and/or pro-fragrance materials. It is commonplace for a plurality of perfume components to be present in a microcapsule. In the compositions for use in the present invention it is envisaged that there will be three or more, preferably four or more, more preferably five or more, most preferably six or more different perfume components in a microcapsule. An upper limit of 300 perfume components may be applied.
The microcapsules may comprise perfume components and a carrier for the perfume ingredients, such as zeolites or cyclodextrins.
The solid fragrance booster composition may comprise an optical enhancer. Preferably the optical enhancer is selected from pearlisers, dyes, colourants, pigments or combinations thereof. Optical enhancers are intended to improve the aesthetics of the solid fragrance booster. They should be non-substantive to fabrics. The solid fragrance booster composition may comprise individual fragrance boosters having different optical enhancers, for example the composition may comprise a mixture of blue boosters and yellow fragrance boosters. The solid fragrance booster composition may comprise other fabric benefit agents in addition to perfumes. These may be selected from: silicones, softening agents, antifoams, insect repellents, shading or hueing dyes, preservatives (e.g. bactericides), perfume carriers, hydrotropes, anti-redeposition agents, soil-release agents, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, dyes, colorants, sunscreens, drape imparting agents, anti-static agents, sequestrants and ironing aids.
The solid fragrance booster composition may comprise a single solid fragrance booster particle or multiple solid fragrance booster particles.
The solid fragrance booster particles may be any suitable shape. Examples of suitable shapes include: spheres, hemispheres, compressed hemispheres, cylinders, cubes, cuboids, tetrahedron, cones, ellipsoid and prisms having any cross-sectional shape (triangle, pentagon, hexagon, star shapes, heart shapes, etc.). The solid fragrance booster composition may comprise fragrance booster particles having of different shapes. For example the solid fragrance booster composition may comprise a mixture of spherical particles and star shaped prism particles.
The solid laundry booster composition may comprise a single unit dose particle. Preferably a unit dose solid laundry booster particle would have a maximum linear dimension of 60 mm and a minimum linear dimension of 5 mm. The mass is preferably 6 to 20 g.
Preferably the solid laundry booster composition comprises a plurality (two or more) of solid laundry booster particles.
A solid fragrance booster particle preferably has a maximum linear dimension of 1 mm to 20 mm, preferably 2 mm to 15 mm and most preferably 3 mm to 10 mm. This dimension refers to the largest cross sectional measurement of the solid fragrance booster particle.
A solid fragrance booster particle preferably has a minimum linear dimension of 0.1 mm to 10mm, preferably 0.2 mm to 8 mm and most preferably 0.5 mm to 5 mm. This dimension refers to the smallest cross sectional measurement of the solid fragrance booster particle.
The solid fragrance booster particles may be prepared by any suitable method. The ingredients may be mixed in any order. Preferably all ingredients excluding water are mixed, followed by the addition of water. Preferably the mixtures are prepared at a temperature of 15 to 70°C. The mixture is then preferably shaped into the desired shape of solid fragrance booster particles.
The solid fragrance booster particles may be shaped by any suitable method, these may be selected from: extrusion, tableting, granulation, casting, pelletising, pastillation or a compression method.
The solid laundry booster composition described herein may be used to deliver fragrance in the laundry process. Preferably they are added to the wash stage of the laundry process. Preferably the solid laundry booster composition is used to in addition to a detergent composition.
Examples
Table 1: Formulations
Figure imgf000007_0001
A liquid part was prepared by, by mixing the non-ionic surfactant in hot water. Cooling the mixture to 45°C and adding the perfume, perfume microcapsules and glycerol. Mixing continued until homogeneous.
A solid part was prepared by mixing the sodium carbonate, calcium sulphate and silica. Mixing continued until a uniform powder was obtained.
The solid and liquid parts were mixed to form a paste. The paste was then cast into moulds to form the desired shape.
Strength was assessed: Strength was measured using texture analyzer (model TA-HDi Perfect ex. Stable Micro Systems). The texture analyzer evaluated the compression strength of an individual bead in force divided by distance, using a 25 kg load. Beads were stored at the relevant temperature for 24 hours before measurements were taken. Multiple beads were measured to calculate the average strength of beads. Table 2: Results
Figure imgf000008_0001
The presence of the non-ionic surfactant increased the high temperature stability of the fragrance booster.

Claims

Claims
1. A solid fragrance booster composition comprising: a 30 to 95 wt.% sodium carbonate; b 0.25 to 40 wt.% ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups; c 2 to 49 wt.% water; and d 0.1 to 30 wt.% perfume.
2. A solid fragrance booster composition according to claim 1 , wherein the composition further comprises perfume microcapsules.
3. A solid fragrance booster composition according to any preceding claim, wherein the ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups is solid at room temperature (20°C).
4. A solid fragrance booster composition according to any preceding claim, wherein the ethoxylated non-ionic surfactant having 10 to 100 ethoxylate groups comprises an alcohol group of C6 to C30.
5. A solid fragrance booster composition according to any preceding claim, wherein the composition comprises 1 to 40 wt.% additional inorganic salt.
6. A solid fragrance booster composition according to any preceding claim, wherein the composition further comprises optical enhancer is selected from pearlisers, dyes, colourants, pigments or combinations thereof.
7. A solid fragrance booster composition according to any preceding claim, wherein the sodium carbonate has a poured bulk density of less than 1000 kg/m3.
8. A solid fragrance booster composition according to any preceding claim, wherein the composition comprises multiple solid fragrance booster particles.
9. A solid fragrance booster composition according to claim 8, wherein the particles have a maximum linear dimension of 1 mm to 20 mm.
10. A solid fragrance booster composition according to claim 8, wherein the particles have a minimum linear dimension of 0.1 mm to 10mm.
11. A solid fragrance booster composition according to claims 1 to 7, wherein the composition comprises a single unit dose solid fragrance booster particle.
12. A solid fragrance booster composition according to claim 11 , wherein the particle has a maximum linear dimension of 60 mm and minimum linear dimension of 5 mm.
13. A method of preparing the solid fragrance boosters according to claim 1, wherein the composition is formed using a process selected from: extrusion, tableting, granulation, casting, pelletising, pastillation or a compression method.
14. Use of solid fragrance booster composition according to any preceding claim to deliver fragrance in the laundry process.
PCT/EP2024/065538 2023-06-30 2024-06-06 Laundry composition WO2025002741A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23182820.3 2023-06-30
EP23182820 2023-06-30

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2003913A (en) * 1977-09-12 1979-03-21 Colgate Palmolive Co Particulate detergent compositions containing alkali metal carbonate and bicarbonate
US20080032910A1 (en) * 1999-12-22 2008-02-07 The Procter & Gamble Company Laundry and cleaning and/or fabric care composition
US20080207476A1 (en) * 2005-09-02 2008-08-28 Henkel Kommanditgesellschaft Auf Aktien Particles containing perfume having improved fragrance properties
US20110015114A1 (en) * 2009-07-09 2011-01-20 The Procter & Gamble Company Process for Preparing a Perfume Particle
US20170218310A1 (en) * 2014-07-30 2017-08-03 Colgate-Palmolive Company Laundry Scent Booster
WO2018055115A1 (en) * 2016-09-26 2018-03-29 Henkel Ag & Co. Kgaa Perfume-containing melting bodies which contain highly ethoxylated non-ionic surfactants
US20200255776A1 (en) * 2017-10-24 2020-08-13 Henkel Ag & Co. Kgaa Solid Perfume-Containing Composition
US20220071863A1 (en) * 2018-12-18 2022-03-10 International Flavors & Fragrances Inc. Microcapsule compositions prepared from polysaccharid

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2003913A (en) * 1977-09-12 1979-03-21 Colgate Palmolive Co Particulate detergent compositions containing alkali metal carbonate and bicarbonate
US20080032910A1 (en) * 1999-12-22 2008-02-07 The Procter & Gamble Company Laundry and cleaning and/or fabric care composition
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