EP1070115B1 - Coloured granular composition for use in particulate detergent compositions - Google Patents

Coloured granular composition for use in particulate detergent compositions Download PDF

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Publication number
EP1070115B1
EP1070115B1 EP99944131A EP99944131A EP1070115B1 EP 1070115 B1 EP1070115 B1 EP 1070115B1 EP 99944131 A EP99944131 A EP 99944131A EP 99944131 A EP99944131 A EP 99944131A EP 1070115 B1 EP1070115 B1 EP 1070115B1
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EP
European Patent Office
Prior art keywords
water
granular composition
coloured
flow modifier
weight
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.)
Expired - Lifetime
Application number
EP99944131A
Other languages
German (de)
French (fr)
Other versions
EP1070115A2 (en
Inventor
Vijay Daru
Winston Anthony Pereira
Rana Hindustan Lever Ltd. Survey No. 907 SENGUPTA
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
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Unilever PLC
Unilever NV
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Publication date
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Publication of EP1070115A2 publication Critical patent/EP1070115A2/en
Application granted granted Critical
Publication of EP1070115B1 publication Critical patent/EP1070115B1/en
Anticipated expiration legal-status Critical
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Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/40Dyes ; Pigments
    • C11D3/42Brightening agents ; Blueing agents
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0034Fixed on a solid conventional detergent ingredient
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005Other compounding ingredients characterised by their effect
    • C11D3/0063Photo- activating compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/20Organic compounds containing oxygen
    • C11D3/2075Carboxylic acids-salts thereof
    • C11D3/2082Polycarboxylic acids-salts thereof
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/20Organic compounds containing oxygen
    • C11D3/22Carbohydrates or derivatives thereof
    • C11D3/222Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3746Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3769(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
    • C11D3/3776Heterocyclic compounds, e.g. lactam
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/40Dyes ; Pigments

Definitions

  • the present invention relates to a fast-dissolving, low-staining granular composition containing a visually distinct, eg coloured or fluorescent, ingredient, for example, a photobleach.
  • the invention more particularly relates to granules containing a coloured or fluorescent ingredient which may be incorporated into a detergent composition without encountering the problem of staining of the fabric during the wash.
  • Coloured speckles are used in detergent formulations to give a distinct appearance to the product as well as to deliver functional benefits. In the wash process, it is undesirable that these coloured speckles settle onto the fabric surface leading to staining of the fabric. It has also been noticed that these stains do not get washed out in subsequent laundering. Further the uneven concentration of these speckles on the substrate could result in localised higher levels of the active causing fabric damage.
  • US 4 097 418 discloses a granular coloured speckle having non-staining qualities comprising an agglomerate of a granular water soluble inorganic alkaline salt with an anionic surfactant which contains a dye or pigment. Mixing of the dye and the anionic surfactant prior to agglomeration prevents the pigment particles from attaching to each other and onto the fabric surface thus preventing staining of the fabric.
  • US 4 762 636 (Ciba-Geigy, 1988 ) discloses a process for obtaining granules with defined physical properties that float on an aqueous treatment liquor and release the active ingredient without getting deposited onto the substrate.
  • the present invention provides a granular composition suitable for incorporation into a particulate detergent composition, the granular composition comprising
  • the water-soluble or water-dispersible barrier material serves to provide a protective layer or coating on the combination of the coloured or fluorescent ingredient and its carrier material, the citric acid. Preferably at least a part of the inorganic flow modifier is also thus protected. Additional inorganic flow modifier that is not protected by the barrier material may also be present.
  • the granule composition comprises:
  • the granular composition of the invention may be prepared by a process in which the coloured or fluorescent ingredient is dispersed onto the citric acid, which is then mixed with part or all of the inorganic flow modifier and the whole treated with the barrier material, then granulated with any remaining inorganic flow modifier.
  • coloured or fluorescent ingredients are photoactivators (also known as photobleaches), especially phthalocyanines; coloured dyes and pigments; fluorescent whitening agents; and mixtures thereof.
  • photoactivators also known as photobleaches
  • phthalocyanines especially phthalocyanines
  • coloured dyes and pigments especially coloured dyes and pigments
  • fluorescent whitening agents especially preferred ingredients are the photobleaches, zinc and aluminium phthalocyanine sulphonates.
  • the inorganic flow modifier can be selected from china clay, (preferably washed china clay), silica, precipitated silica, precipitated calcium carbonate and diatomaceous/siliceous earth. China clay, silica and mixtures thereof are especially preferred.
  • the water-soluble or water-dispersible, preferably water-soluble, barrier material may suitably be selected from water-soluble starches, polyvinyl alcohols, polyethylene glycols and latex. Preferred materials are starches and polyvinyl alcohols.
  • the granules of the present invention may be prepared by dispersing the coloured or fluorescent ingredient on the citric acid, for example, in a rotary pan granulator, and subsequently or simultaneously adding a suitable flow modifier.
  • the resultant agglomerate is dried and further coated with the water-soluble or water-dispersible barrier material, and optionally granulated with further flow modifier and dried.
  • a further subject of the invention is a particulate detergent composition comprising organic detergent surfactants and other detergent ingredients, and comprising a granular composition as defined previously.
  • the particulate laundry detergent composition of the invention may suitably comprise from 5 to 60 wt% of organic surfactant, from 10 to 80 wt% of detergency builder, from 0.1 to 10 wt%, preferably from 0.5 to 5 wt%, of a granular composition as defined previously, and optionally other detergent ingredients to 100 wt%.
  • Example 1 photobleach granules using citric acid carrier and starch barrier material
  • the formulation of the granular material was as follows: Starting material (g) Final formulation (wt%) Aluminium phthalocyanine sulphonate 20 2 Citric acid 8000 80 China clay 800 8 Silica 500 5 Starch 50 0.5 Water to 100% 630 4.5
  • Example 2 photobleach granules using citric acid carrier and polyvinyl alcohol barrier material
  • Photobleach granules were prepared as in Example 1 but the starch solution was replaced by polyvinyl alcohol solution (concentration 10% by weight).
  • the final formulation of the granular material was as follows: Starting material (g) Final formulation (wt%) Aluminium phthalocyanine sulphonate 20 2 Citric acid 8000 80 China clay 800 8 Silica 500 5 Polyvinyl alcohol 50 0.5 Water to 100% 630 4.5
  • Granules were prepared by the process of Example 1 but using soda ash instead of citric acid.
  • Granules were prepared by the process of Example 1 but using sodium tripolyphosphate instead of citric acid.
  • Cotton fabric pieces of dimension 10 inch x 10 inch (25.4 cm x 25.4 cm) were placed in trays, each together with 2 kg of water and one of the following photobleach granular compositions:
  • Comparative Example C commercially available blue speckles, Laundrosil (Trade Mark) PRT-2 ex Sud-Chemie, containing aluminium phthalocyanine sulphonate on a bentonite clay carrier.
  • Granular detergent compositions were prepared by dry mixing to the following formulations: Linear alkylbenzene sulphonate 30 Sodium carbonate 20 Sodium tripolyphosphate 40 Photobleach granules (see below) 2 Enzymes, perfume, fluorescer, water etc to 100
  • the detergent composition of Example 3 contained the photobleach granules of Example 1 (citric acid carrier, starch barrier material).
  • the detergent composition of Example 4 contained the photobleach granules of Example 2 (citric acid carrier, polyvinyl alcohol barrier material).

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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)
  • Emergency Medicine (AREA)
  • Molecular Biology (AREA)
  • Detergent Compositions (AREA)

Abstract

A granular composition suitable for incorporation into a particulate detergent composition comprises: (a) a coloured or fluorescent ingredient, for example, a photobleach such as zinc or aluminium phthalocyanine sulphonate; (b) a carrier material for the coloured or fluorescent ingredient which is an α-hydroxy organic acid, preferably citric acid; (c) a water-soluble or water-dispersible barrier material, preferably a water-soluble starch or polyvinyl alcohol; and (d) an inorganic flow modifier, for example, silica and/or china clay.

Description

    Technical field
  • The present invention relates to a fast-dissolving, low-staining granular composition containing a visually distinct, eg coloured or fluorescent, ingredient, for example, a photobleach. The invention more particularly relates to granules containing a coloured or fluorescent ingredient which may be incorporated into a detergent composition without encountering the problem of staining of the fabric during the wash.
  • Background and Prior Art
  • Coloured speckles are used in detergent formulations to give a distinct appearance to the product as well as to deliver functional benefits. In the wash process, it is undesirable that these coloured speckles settle onto the fabric surface leading to staining of the fabric. It has also been noticed that these stains do not get washed out in subsequent laundering. Further the uneven concentration of these speckles on the substrate could result in localised higher levels of the active causing fabric damage.
  • US 4 097 418 (Procter & Gamble, 1978 ) discloses a granular coloured speckle having non-staining qualities comprising an agglomerate of a granular water soluble inorganic alkaline salt with an anionic surfactant which contains a dye or pigment. Mixing of the dye and the anionic surfactant prior to agglomeration prevents the pigment particles from attaching to each other and onto the fabric surface thus preventing staining of the fabric.
  • US 4 762 636 (Ciba-Geigy, 1988 ) discloses a process for obtaining granules with defined physical properties that float on an aqueous treatment liquor and release the active ingredient without getting deposited onto the substrate.
  • Summary of the invention
  • It is thus an object of the present invention to provide a granule composition containing a coloured or fluorescent ingredient which may be incorporated into a detergent composition without encountering the problem of staining of the fabric during the wash process.
  • It is a further object of the invention to provide a granule composition having a superior non-staining property, which may be manufactured by a process which is more economical and would involve lower capital cost as compared to the known processes.
  • Accordingly the present invention provides a granular composition suitable for incorporation into a particulate detergent composition, the granular composition comprising
    1. (a) a coloured or fluorescent ingredient,
    2. (b) citric acid as a carrier material for the coloured or fluorescent ingredient,
    3. (c) a water-soluble or water-dispersible barrier material, and
    4. (d) an inorganic flow modifier.
  • The water-soluble or water-dispersible barrier material serves to provide a protective layer or coating on the combination of the coloured or fluorescent ingredient and its carrier material, the citric acid.
    Preferably at least a part of the inorganic flow modifier is also thus protected. Additional inorganic flow modifier that is not protected by the barrier material may also be present.
  • The term coating used above does not necessarily imply complete coating.
  • According to a preferred embodiment of the invention, therefore,
    • the coloured or fluorescent ingredient is dispersed onto, or in the form of a coating over, the citric acid,
    • the citric acid carrying the coloured or fluorescent ingredient is in admixture with the flow modifier or a portion thereof,
    • the barrier material is in the form of a coating over the said mixture of citric acid and flow modifier, being combined with (in admixture with) any remaining portion of the flow modifier.
  • According to a further preferred aspect of the invention the granule composition comprises:
    • from 40 to 90% by weight, preferably from 60 to 80% by weight, of the citric acid,
    • from 0.5 to 5% by weight, preferably from 1 to 2% by weight, of the coloured or fluorescent ingredient,
    • from 10 to 50% by weight, preferably from 18 to 40% by weight, of the inorganic flow modifier, and
    • from 0.5 to 5% by weight, preferably from 1 to 3% by weight, of the water soluble barrier material.
  • The granular composition of the invention may be prepared by a process in which the coloured or fluorescent ingredient is dispersed onto the citric acid, which is then mixed with part or all of the inorganic flow modifier and the whole treated with the barrier material, then granulated with any remaining inorganic flow modifier.
  • According to a further aspect of the invention, therefore, there is provided a process for the preparation of a granule composition which comprises the steps of:
    • (i) dispersing the coloured or fluorescent ingredient on the citric acid and granulating with the inorganic flow modifier or a portion thereof;
    • (ii) drying the material, preferably at a temperature within the range of from 15 to 50°C, more preferably from 20 to 40°C;
    • (iii) treating the dried material with the water-soluble or water-dispersible barrier material;
    • (iv) optionally, granulating the said treated material with any remaining flow aid modifier and drying.
  • Examples of coloured or fluorescent ingredients are photoactivators (also known as photobleaches), especially phthalocyanines; coloured dyes and pigments; fluorescent whitening agents; and mixtures thereof. Especially preferred ingredients are the photobleaches, zinc and aluminium phthalocyanine sulphonates.
  • The inorganic flow modifier can be selected from china clay, (preferably washed china clay), silica, precipitated silica, precipitated calcium carbonate and diatomaceous/siliceous earth. China clay, silica and mixtures thereof are especially preferred.
  • The water-soluble or water-dispersible, preferably water-soluble, barrier material may suitably be selected from water-soluble starches, polyvinyl alcohols, polyethylene glycols and latex. Preferred materials are starches and polyvinyl alcohols.
  • As previously indicated, the granules of the present invention may be prepared by dispersing the coloured or fluorescent ingredient on the citric acid, for example, in a rotary pan granulator, and subsequently or simultaneously adding a suitable flow modifier. The resultant agglomerate is dried and further coated with the water-soluble or water-dispersible barrier material, and optionally granulated with further flow modifier and dried.
  • A further subject of the invention is a particulate detergent composition comprising organic detergent surfactants and other detergent ingredients, and comprising a granular composition as defined previously. The particulate laundry detergent composition of the invention may suitably comprise from 5 to 60 wt% of organic surfactant, from 10 to 80 wt% of detergency builder, from 0.1 to 10 wt%, preferably from 0.5 to 5 wt%, of a granular composition as defined previously, and optionally other detergent ingredients to 100 wt%.
  • The invention will now be illustrated further by means of the following non-limiting Examples, in which parts and percentages are by weight unless otherwise stated. Examples denoted by a number are in accordance with the invention, while Examples denoted by a letter are comparative.
  • EXAMPLE 1, COMPARATIVE EXAMPLES A TO C Preparation of granular compositions Example 1: photobleach granules using citric acid carrier and starch barrier material
  • 8 Kg of citric acid were placed in a rotary pan granulator and 200 g of aluminium phthalocyanine sulphonate solution (10% concentration) were sprayed on to it. During spraying, half the quantity of a mixture of 0.8 kg of china clay and 500 g of silica was added. The material was dried at 40°C for about 4 hours. The material was taken back into a rotary pan granulator and 500 g of starch solution (concentration 10% by weight) was sprayed on. The balance half of the mixture of china clay and silica was added. The material was dried at 40°C for 4 hours.
  • The formulation of the granular material was as follows:
    Starting material (g) Final formulation (wt%)
    Aluminium phthalocyanine sulphonate 20 2
    Citric acid 8000 80
    China clay 800 8
    Silica 500 5
    Starch 50 0.5
    Water to 100% 630 4.5
  • Example 2: photobleach granules using citric acid carrier and polyvinyl alcohol barrier material
  • Photobleach granules were prepared as in Example 1 but the starch solution was replaced by polyvinyl alcohol solution (concentration 10% by weight).
  • The final formulation of the granular material was as follows:
    Starting material (g) Final formulation (wt%)
    Aluminium phthalocyanine sulphonate 20 2
    Citric acid 8000 80
    China clay 800 8
    Silica 500 5
    Polyvinyl alcohol 50 0.5
    Water to 100% 630 4.5
  • Comparative Example A
  • Granules were prepared by the process of Example 1 but using soda ash instead of citric acid.
  • Comparative Example B
  • Granules were prepared by the process of Example 1 but using sodium tripolyphosphate instead of citric acid.
  • Wash protocol
  • Cotton fabric pieces of dimension 10 inch x 10 inch (25.4 cm x 25.4 cm) were placed in trays, each together with 2 kg of water and one of the following photobleach granular compositions:
  • Example 1 Comparative Example A Comparative Example B
  • Comparative Example C: commercially available blue speckles, Laundrosil (Trade Mark) PRT-2 ex Sud-Chemie, containing aluminium phthalocyanine sulphonate on a bentonite clay carrier.
  • Each fabric piece was allowed to soak for 30 minutes. Later the fabric was washed in running water and dried in the sun. Four replications were maintained for each treatment. A panel of trained members analysed the fabric visually for blue stains on a scale of 0 to 5 as follows:
    Scores Staining level
    0-1 minimal/negligible
    2-3 perceptible
    4-5 significant blue staining
  • The data were analysed statistically and are shown in the following Table.
    Example Carrier material in photobleach granule Average score
    1 citric acid 0.9
    A soda ash 2.9
    B sodium tripolyphosphate 4.8
    C commercial 4.5
    CD @ 99% 0.71
  • The data presented in the table show that the commercially available granules stained the fabric considerably while the use of the granules according to the invention had a significantly superior effect in controlling the staining of the fabric. This is further substantiated by the fact that granules made by the same process but by replacing the citric acid with soda ash or sodium tripolyphosphate did not prevent staining of the fabric significantly.
  • EXAMPLES 3 and 4: DETERGENT COMPOSITIONS
  • Granular detergent compositions were prepared by dry mixing to the following formulations:
    Linear alkylbenzene sulphonate 30
    Sodium carbonate 20
    Sodium tripolyphosphate 40
    Photobleach granules (see below) 2
    Enzymes, perfume, fluorescer, water etc to 100
  • The detergent composition of Example 3 contained the photobleach granules of Example 1 (citric acid carrier, starch barrier material).
  • The detergent composition of Example 4 contained the photobleach granules of Example 2 (citric acid carrier, polyvinyl alcohol barrier material).
  • Both detergent compositions were stored in 500 g pouches from May to December under the following conditions representing summer, monsoon and winter conditions in India:
    Temperature (°C) Relative Humidity (%)
    Room temperature 35 80
    Hot and dry 42 45
    Hot and humid 42 85
  • No instability, as determined by visual inspection, could be detected at the end of the storage period.

Claims (12)

  1. A granular composition suitable for incorporation into a particulate detergent composition, the granular composition comprising
    (a) a coloured or fluorescent ingredient,
    (b) a carrier material for the coloured or fluorescent ingredient,
    characterised in that the carrier material (b) is citric acid, and the granular composition further comprises
    (c) a water-soluble or water-dispersible barrier material, and
    (d) an inorganic flow modifier.
  2. A granular composition as claimed in claim 1,
    characterised in that:
    - the coloured or fluorescent ingredient (a) is dispersed onto, or in the form of a coating over, the citric acid (b), which is in admixture with the inorganic flow modifier (d) or a portion thereof, and
    - the barrier material (c) is in the form of a coating over the mixture of coated citric acid and inorganic flow modifier, the coated mixture being in admixture with any remaining inorganic flow modifier (d).
  3. A granular composition as claimed in any preceding claim, characterised in that it comprises:
    (a) from 0.5 to 5% by weight, preferably from 1 to 2% by weight, of the coloured or fluorescent ingredient,
    (b) from 40 to 90% by weight, preferably from 60 to 80% by weight, of citric acid,
    (c) from 0.5 to 5% by weight, preferably from 1 to 3% by weight, of the water-soluble or water-dispersible barrier material.
    (d) from 10 to 50% by weight, preferably from 18 to 40% by weight, of the inorganic flow modifier.
  4. A granular composition as claimed in any preceding claim, characterised in that the coloured or fluorescent ingredient (a) is selected from photoactivators (photobleaches), pigments, dyes, and fluorescent whitening agents.
  5. A granular composition as claimed in claim 4, characterised in that the coloured or fluorescent ingredient (a) is a zinc or aluminium phthalocyanine sulphonate.
  6. A granular composition as claimed in any preceding claim, characterised in that the water-soluble or water-dispersible barrier material (c) is selected from water-soluble starches, polyvinyl alcohols, polyethylene glycols, and latices.
  7. A granular composition as claimed in claim 6, characterised in that the barrier material (c) is water-soluble and is a starch or a polyvinyl alcohol.
  8. A granular composition as claimed in any preceding claim, characterised in that the inorganic flow modifier (d) is selected from china clay, silica, precipitated silica, precipitated calcium carbonate, and diatomaceous or siliceous earth.
  9. A granular composition as claimed in claim 8, characterised in that the inorganic flow modifier (d) comprises china clay, silica or a mixture thereof.
  10. A particulate laundry detergent composition which comprises from 5 to 60 wt% of organic surfactant, from 10 to 80 wt% of detergency builder, and optionally other detergent ingredients to 100 wt%, characterised in that it comprises from 0.1 to 10 wt%, preferably from 0.5 to 5 wt%, of a granular composition as claimed in any one of claims 1 to 11.
  11. A process for the preparation of a granular composition as claimed in claim 1, characterised in that it comprises the steps of:
    (i) dispersing the coloured or fluorescent ingredient (a) onto the citric acid (b), and granulating with a portion or the whole of the inorganic flow modifier (d),
    (ii) drying the granular material thus obtained,
    (iii) treating the dried material with the water-soluble or water-dispersible barrier material (c),
    (iv) optionally, granulating the treated material thus obtained with any remaining inorganic flow modifier (d) and drying.
  12. A process as claimed in claim 11, characterised in that the drying step (iii) is carried out at a temperature within the range of from 15 to 50°C, preferably from 20 to 40°C.
EP99944131A 1998-04-07 1999-01-26 Coloured granular composition for use in particulate detergent compositions Expired - Lifetime EP1070115B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9807477 1998-04-07
GBGB9807477.6A GB9807477D0 (en) 1998-04-07 1998-04-07 Coloured granular composition for use in particulate detergent compositions
PCT/EP1999/000493 WO1999051714A2 (en) 1998-04-07 1999-01-26 Coloured granular composition for use in particulate detergent compositions

Publications (2)

Publication Number Publication Date
EP1070115A2 EP1070115A2 (en) 2001-01-24
EP1070115B1 true EP1070115B1 (en) 2008-03-12

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EP99944131A Expired - Lifetime EP1070115B1 (en) 1998-04-07 1999-01-26 Coloured granular composition for use in particulate detergent compositions

Country Status (12)

Country Link
EP (1) EP1070115B1 (en)
CN (1) CN1137983C (en)
AU (1) AU5265299A (en)
BR (1) BR9909469A (en)
DE (1) DE69938341T2 (en)
EA (1) EA200001026A1 (en)
ES (1) ES2301245T3 (en)
GB (1) GB9807477D0 (en)
ID (1) ID26094A (en)
TR (1) TR200002800T2 (en)
WO (1) WO1999051714A2 (en)
ZA (1) ZA99839B (en)

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GB0110414D0 (en) * 2001-04-27 2001-06-20 Unilever Plc Radical initiator composition
GB0120160D0 (en) 2001-08-20 2001-10-10 Unilever Plc Photobleach speckle and laundry detergent compositions containing it
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ES2412683T5 (en) 2008-01-04 2020-11-13 Procter & Gamble Compositions containing enzyme and fabric tinting agent
WO2010086832A2 (en) * 2009-01-30 2010-08-05 Ecolab Inc. Development of an aluminum hydroxycarboxylate builder
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