EP1903099A1 - Coated detergent compositions and manufacture process - Google Patents
Coated detergent compositions and manufacture process Download PDFInfo
- Publication number
- EP1903099A1 EP1903099A1 EP06019837A EP06019837A EP1903099A1 EP 1903099 A1 EP1903099 A1 EP 1903099A1 EP 06019837 A EP06019837 A EP 06019837A EP 06019837 A EP06019837 A EP 06019837A EP 1903099 A1 EP1903099 A1 EP 1903099A1
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- EP
- European Patent Office
- Prior art keywords
- detergent
- composition
- coating
- acid
- water
- 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.)
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Classifications
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- 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
- C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
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- 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
- C11D17/0082—Coated tablets
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/221—Mono, di- or trisaccharides or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
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- 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
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
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- 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
- C11D3/38—Products with no well-defined composition, e.g. natural products
Definitions
- the present invention relates to a coated detergent and/or additive composition e.g. for the dish washing or laundry machine or water softener tablets coated with a water or temperature dissolvable material and a process of manufacturing thereof.
- the traditional form of detergent and/or additive compositions for use in dish washing or washing machines is granules or non particulate solids such as bars or tablets or briquettes.
- the term tablet will refer to any form of non particulate solids.
- said detergent and/or additive tablets or granules are respectively placed or poured in the dispenser located in said machine or in an adequate dispensing device which is then placed in said machine.
- EP-A 700 989 describes a unit packaged detergent.
- Said unit packaged detergent is a detergent packaged in a water soluble polymer film or sheet in such a form that it is suitable for one wash. This unit packaged detergent is placed in the detergent disperser of the machine without unwrapping the contained detergent from the packaging.
- said unit packaged detergent prevents wasting through spillage of the detergent and/or additive composition.
- said unit packaged detergent eliminates the need for the user to estimate the dosage of said composition required and ensures that the correct dosage of said composition per wash cycle is used by the user.
- the fingers of a user do not come in contact with the wrapped detergent composition.
- WO 04/20509 describes a water soluble non-homogenous polymer containing water soluble fillers for wrapping detergent compositions.
- the polymer is used in an injection moulding process using a water soluble resin comprising a water soluble polymer and a water soluble filler.
- Residues of the film or foil used as soluble wrapping material may soil e.g. the dish washing machines, dependent from the used film or foils.
- the process of manufacture Independent from the solubility of the films or foils used for wrapping /packaging of the detergent particles the process of manufacture has to include a wrapping /packaging step, which affects the speed of the manufacture process.
- Unwrapped tablets having a coating primarily are provided for laundry dishwashing compositions, particularly for increasing mechanical resistance of the tablet and for stabilise them.
- WO00/66701 describe shaped detergent tablets coated with several types of water soluble polymers, particularly with (co)polymers comprising acid monomers and/or unsaturated monomers.
- US 6,576,599 discloses dishwashing tablets having a water insoluble coating for improving mechanical stability of the tablets.
- WO 04/ 20569 A1 describes a detergent particle having a base layer of a fine powder dispersed in a binder on the surface of the particle, said base layer is coated with a surface modifier.
- the object of the present invention was to provide a detergent composition providing safe and easy handling for the user and a fast and easy production process for said composition.
- a unit coated detergent composition wherein the detergent composition is coated with a water dissolvable or dispersible coating comprising at least one compound, selected from cellulose, starch or starch derivatives, pectine, proteins or peptides, particularly gelatine, sugar(s) or amino acid(s).
- detergent and/or additive compositions will be encompassed by the term "detergent”.
- This detergent composition may be in the form of granules or of any non particulate solids such as bars or tablets or briquettes.
- tablet encompasses in the following any form of non particulate solids.
- Said tablet may have any shape.
- said solid detergent tablet is formed in a shape to ensure the uniform dissolution of the tablet in the wash liquor.
- the detergent and/or additive composition may comprise any ingredients known in the art for dish washing, laundry or water softening. Such ingredients may include for example surfactants, suds suppressers, bleach systems, chelating agents, builders, enzymes, fillers and perfumes, however, is not limited to these.
- One particular preferred embodiment of the present invention is a shaped body for automatic dishwashing formed of a particulate detergent composition , wherein the detergent composition comprises any of the ingredients which are typical for such compositions.
- the detergent composition comprises any of the ingredients which are typical for such compositions.
- Such ingredients are not limiting the invention, however, examples of suitable ingredients are listed below.
- a predosed quantity of detergent is coated with a water soluble or dissolvable material to provide a coated detergent particle as a "unit coated detergent".
- unit coated detergent means an amount of detergent suitable for one wash. Nevertheless, two or more unit coated detergents according to the present invention may be used in a single wash to meet different washing conditions, like dirtiness of washing, amount of washing, volume of washing machine, hardness of water, temperature of water and type of detergent. Said coating is made of a water or temperature dissolvable material.
- the unit coated detergent according to the present invention may contain between 5 grams and 60 grams of detergent.
- This unit coated detergent of the present invention is placed in the machine without any further handling step. This is possible, since said coating is made of a water solvable, dissolvable or dispersible material.
- Providing the detergent in coated form has several advantages. First, said unit coated detergent prevents wasting through spillage of the detergent and/or additive composition. Spillage may occur during the measuring and/or dispensing into the dispenser of the washing machine or into a dispensing device. Second, said unit coated detergent eliminates the need for the user to estimate the dosage of said composition required and ensures that the correct dosage of said composition per wash cycle is used by the user. Therefore, separate measuring and/or dosing devices are superfluous. Third, the fingers of a user do not come in contact with the detergent composition, which means that the user avoids to soil its fingers and/or hands. Either in case of water solvable films wrapped around the detergent unit people may be confused and try to open said wrapping.
- the coating of the unit coated detergent is made of a material which is water soluble or dissolves in water or is dispersible in water, is harmless for the user and can be processed at high speed during manufacture of the coating of detergent compositions.
- compositions mentioned under items A.) to F.) optionally can comprise a binder material.
- compositions A.) to C. may comprise at least 5% by weight, preferably at least 15 % by weight, more preferably at least 35 % by weight, most preferably at least 50 % by weight and up to 100% by weight, or up to 90 % by weight, maybe up to 75 % by weight of the materials mentioned in A.) to C.)
- compositions D.) to F. may comprise at least 5% by weight, preferably at least 15 % by weight, more preferably at least 35 % by weight, most preferably at least 50 % by weight of the compounds mentioned in A.) to C.) and 5 to 95, preferably 10 to 75, more preferably 15 to 50 % by weight of at least one of the compounds mentioned in D.) to F.) as further compounds.
- a preferred water soluble low molecular weight compound is any type of sugar, amino acid or other low molecular acids, e.g. citric acid or the like.
- One particular advantage of these materials is on one side the water solubility / dispersibility on the other hand the non-toxicity of the compounds.
- water-soluble/dissolvable/disperible is herein defined when more than 99% of a coating (layer) of such material dissolves within 15 minutes in a beaker containing 1 L of deionised water at 40° C which is stirred with a stirrer revolving at 200 r. p.m. It is pointed out that materials can be used as ingredients for the coating which itself may not be soluble, but e.g. dispersible, as long as the coating comprising said material is dissolved by water.
- One of the preferred water soluble / dissolvable / dispersible materials is cellulose, particularly preferred cellulose fibres or microcristalline cellulose with an average particle size in dry state of below 1000 ⁇ m, preferably below 500 ⁇ m, more preferred 250 ⁇ m or smaller and particularly preferred of between 20 and 150 ⁇ m; starch or starch derivatives, pectine like glycogene or proteins or peptides (at least 10mer), particularly gelatine or derivatives or peptide fragments thereof.
- Another suitable and preferred material is shellac, which preferably is used in degreased form.
- Suitable compounds are "low molecular weight compounds" like C 3 -C 6 sugars in aldose or ketose form like allose, altrose, glucose, mannose, gulose, idose, galactose, talose, psicose, fructose, sorbose, tagatose, xylulose, ribulose, ribose, arabinose, xylose, lyxose, threose, erythrose, erythrulose, dihydroxy acetone or glycerol aldehyde or disaccharides like for example saccharose, lactose, maltose or Isomalt or oligosaccharides comprising 3 to 10 sugar units or amino acids, preferably natural amino acids (commonly contained in natural proteins) without being restricted to the mentioned examples.
- One particularly preferred low molecular weight compound is the sugar Isomalt ST, comprising 6-O- ⁇ -D-glucopyranosyl-D-sorbite and 1-O- ⁇ -D-glucopyranosyl-D-mannite dihydrate units. Further information about said sugar is available under www.chemistryworld.de/schene/prs-html/analysen/2444-spz.htm.
- Said materials can be used solely each or as a mixture of the single materials.
- the mentioned material(s) of A.) to F.) can form one layer on the surface of the unit composition
- the unit composition comprises at least two layers of the above mentioned materials, wherein the layers can comprise different material selected from A.) to F.) , as well as different combinations of the material(s) of A.) to F.) as mentioned above.
- water soluble / dissolvable / dispersible compounds are used in combination with an additional water soluble or dispersible polymer.
- water soluble/dispersible polymer it will be appreciated that the water soluble polymer may comprise a homopolymer or a copolymer.
- the copolymer may be a random or block copolymer.
- a suitable additional water soluble polymer may comprise a cellulose derivative such as a cellulose ether e.g. hydroxypropyl cellulose, carboxymethyl cellulose, or the polymer comprises monomers of polyvinyl alcohol, polyvinyl pyrrolidone, partially hydrolysed polyvinyl acetate, polyvinyl acetate, modified acrylic, fumaric, maleic, itaconic, aconitic, mesaconic, citraconic and methylenemalonic acid or their salts, maleic anhydride, acrylamide, alkylene, vinylmethyl ether or styrene.
- Such polymers can either be homo- or copolymers of the mentioned monomer units.
- polyvinyl pyrrolidone homopolymers or copolymers of polyvinylalcohol preferably copolymers of polyvinylalcohol and polycarboxylates, most preferred are copolymers of polyvinylalcohol with maleic acid or (meth)acrylic acid.
- the water soluble polymer preferably has dispersant, anti-redeposition, soil releasing or other detergency properties.
- the additional water soluble polymer may further be a polymer comprising sulfonic acid groups like e.g. the polymers described in EP-A 1 299 513 , EP-A 1 363 986 , WO 95/12654 or EP-A 0 877 002
- the water soluble polymer system may comprise a soil release agent.
- polymeric soil release agents include those having: (a) one or more nonionic hydrophile components consisting essentially of (i) polyoxyethylene segments with a degree of polymerization of at least 2, or (ii) oxypropylene or polyoxypropylene segments with a degree of polymerization of from 2 to 10, wherein said hydrophile segment does not encompass any oxypropylene unit unless it is bonded to adjacent moieties at each end by ether linkages, or (iii) a mixture of oxyalkylene units comprising oxyethylene and from 1 to 30 oxypropylene units, said hydrophile segments preferably comprising at least 25% oxyethylene units and more preferably, especially for such components having 20 to 30 oxypropylene units, at least 50% oxyethylene units; or (b) one or more hydrophobe components comprising (i) C3 oxyalkylene terephthalate segments, wherein, if said hydrophobe components also comprise oxyethylene terephthalate, the ratio of oxyethylene terephthalate:
- the polyoxyethylene segments of (a)(i) will have a degree of polymerization of from 1 to 200, although higher levels can be used, preferably from 3 to 150, more preferably from 6 to 100.
- Suitable oxy C4-C6 alkylene hydrophobe segments include, but are not limited to, end-caps of polymeric soil release agents such as MO 3 S(CH:)nOCH:CH 2 O-, where M is sodium and n is an integer from 4-6.
- Other soil release agents useful herein also include cellulosic derivatives such as hydroxyether cellulosic polymers, copolymeric blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate, and the like.
- Such agents are commercially available and include hydroxyethers of cellulose such as METHOCEL (Dow).
- Cellulosic soil release agents for use herein also include those selected from the group consisting of Ct-C4 alkyl and C4 hydroxyalkyl cellulose.
- Further suitable surfactants include water-soluble cationic ethoxylated amine compounds with particulate soil/claysoil removal and/or anti-redeposition properties. Particularly preferred of these cationic compounds are ethoxylated cationic monoamines, diamines or triamines.
- a preferred coating system in accordance with the invention meets one or more of the following physical parameters:
- any additives are substantially water soluble or dispersible so that the overall system retains its water solubility / water dispersibility.
- the water soluble coating system may contain a plasticizer with a content of less than 10 wt %, most preferably less than 5%.
- Suitable types of plasticizers include solvents.
- solvents include alkylene glycol mono lower alkyl ethers, glycerol, propylene glycols, ethoxylated or propoxylated ethylene or propylene, glycerol esters, glycerol triacetate, lower molecular weight polyethylene glycols, lower molecular weight methyl esters and amides.
- Another preferred type of surfactant comprises the medium molecular weight polyethylene glycols (PEGs). Such materials preferably have molecular weights of at least 150. PEGs ofmolecular weight ranging from 200 to 3000 are most preferred. Yet another preferred type of surfactant comprises lower molecular weight methyl esters. Such materials are those of the general formula: R-C(O)- OCH 3 wherein R ranges from 1 to 18. Examples of suitable lower molecular weight methyl esters include methyl acetate, methyl propionate, methyl octanoate, and methyl dodecanoate.
- Suitable types of plasticisers also include nonionic surfactants.
- Preferred nonionic surfactants incorporated into the resin provide a suds suppression benefit.
- the alkyl ethoxylate condensation products of an alcohol with from 1 to 80 moles of an alkylene (liner/branched aliphatic / aromatic optionally subsituted C 2 to C 20 alkylene) oxide are suitable for this use.
- the alkyl chain of the alcohol can either be straight or branched, primary or secondary, and generally contains from 6 to 22 carbon atoms.
- Particularly preferred are the condensation products of alcohols having an alkyl group containing from 8 to 20 carbon atoms with from 2 to 10 moles of ethylene oxide per mole of alcohol.
- Suitable surfactants include POLY-TERGENT(R) SLF-18B nonionic surfactants by Olin Corporation.
- Ethoxylated C 6 -C 18 fatty alcohols and C 6 -C 18 mixed ethoxylated/propoxylated fatty alcohols are suitable surfactants for use herein.
- the ethoxylated fatty alcohols are the C 10 -C 18 ethoxylated fatty alcohols with a degree of ethoxylation of from 3 to 50, most preferably these are the C 12 -C 18 ethoxylated fatty alcohols with a degree of ethoxylation from 3 to 40.
- the mixed ethoxylated/propoxylated fatty alcohols have an alkyl chain length of from 10 to 18 carbon atoms, a degree of ethoxylation of from 3 to 30 and a degree of propoxylation of from 1 to 10.
- the condensation products of ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol are suitable for use herein.
- the hydrophobic portion of these compounds preferably has a molecular weight of from 1500 to 1800 and exhibits water insolubility.
- Examples of compounds of this type include certain of the commercially-available Pluronic (TM) surfactants, marketed by BASF.
- condensation products of ethylene oxide with the product resulting from the reaction of propylene oxide and ethylenediamine are suitable for use herein.
- the hydrophobic moiety of these products consists of the reaction product of ethylenediamine and excess propylene oxide, and generally has a molecular weight of from 2500 to 3000.
- this type of nonionic surfactant include certain of the commercially available Tetronic(TM) compounds, marketed by BASF.
- the polymer system may comprises a mixed nonionic surfactant system.
- Suitable compounds include fatty esters of mono- or polyhydric alcohols having from 1 to 40 carbon atoms in the hydrocarbon chain.
- the fatty acid portion of the fatty ester can be obtained from mono- or poly-carboxylic acids having from 1 to 40 carbon atoms in the hydrocarbon chain.
- monocarboxylic fatty acids include behenic acid, stearic acid, oleic acid, palmitic acid, myristic acid, lauric acid, acetic acid, propionic acid, butyric acid, isobutyric acid, Valerie acid, lactic acid, glycolic acid and beta,beta'-dihydroxyisobutyric acid.
- Suitable polycarboxylic acids include: n-butyl-malonic acid, isocitric acid, citric acid, maleic acid, malic acid and succinic acid.
- the fatty alcohol radical in the fatty ester can be represented by mono- or polyhydric alcohols having from 1 to 40 carbon atoms in the hydrocarbon chain.
- suitable fatty alcohols include; behenyl, arachidyl, cocoyl, oleyl and lauryl alcohol, ethylene glycol, glycerol, ethanol, isopropanol, vinyl alcohol, diglycerol, xylitol, sucrose, erythritol, pentaerythritol, sorbitol or sorbitan.
- the fatty acid and/or fatty alcohol group of the fatty ester adjunct material has from 1 to 24 carbon atoms in the alkyl chain.
- Preferred fatty esters herein are ethylene glycol, glycerol and sorbitan esters wherein the fatty acid portion of the ester normally comprises a species selected from behenic acid, stearic acid, oleic acid, palmitic acid or myristic acid.
- the glycerol esters are also highly preferred.
- Specific examples of fatty alcohol esters for use herein include: stearyl acetate, palmityl all-lactate, cocoyl isobutyrate, oleyl maleate, oleyl dimaleate, and tallowyl proprionate.
- Fatty acid esters useful herein include: xylitol monopalmitate, pentaerythritol monostearate, sucrose monostearate, glycerol mono stearate, ethylene glycol mono stearate, sorbitan esters.
- Suitable sorbitan esters include sorbitan monostearate, sorbitan palmitate, sorbitan monolaurate, sorbitan monomyristate, sorbitan monobehenate, sorbitan mono-oleate, sorbitan dilaurate, sorbitan distearate, sorbitan dibehenate, sorbitan dioleate, and also mixed tallow alkyl sorbitan mono- and all-esters.
- Glycerol monostearate, glycerol mono-oleate, glycerol monopalmitate, glycerol monobehenate, and glycerol distearate are preferred glycerol esters herein.
- Further suitable agents include triglycerides, mono or diglycerides, and wholly or partially hydrogenated derivatives thereof, and any mixtures thereof.
- Suitable sources of fatty acid esters include vegetable and fish oils and animal fats. Suitable vegetable oils include soy bean oil, cotton seed oil, castor oil, olive oil, peanut oil, safflower oil, sunflower oil, rapeseed oil, grapeseed oil, palm oil and corn oil.
- Waxes including microcrystalline waxes are possible lubricants, although much less preferred in the present invention due to their poor solubility in water.
- Preferred waxes have a melting point in the range from 35° C to 110° C and comprise generally from 12 to 70 carbon atoms.
- Preferred are petroleum waxes of the paraffin and microcrystalline type which are composed of long-chain saturated hydrocarbon compounds.
- the coating may include a colourant.
- Colourant when present as a component in the resin is preferably present at a level of from 0.001 wt % to 1.5wt %, preferably from 0.01 wt % to 1.0wt %, most preferably from 0.1wt % to 0.3wt %.
- the colourant may comprise a dye or a pigment.
- suitable dyes include reactive dyes, direct dyes, azo dyes.
- Preferred dyes include phthalocyanine dyes, anthraquinone dye, quinoline dyes, monoazo, disazo and polyazo. More preferred dyes include anthraquinone, quinoline and monoazo dyes.
- Preferred dyes include SANDOLAN E-HRL 180% (tradename), SANDOLAN MILLING BLUE (tradename), TURQUOISE ACID BLUE (tradename) and SANDOLAN BRILLIANT GREEN (tradename) all available from Clariant UK, HEXACOL QUINOLINE YELLOW (tradename) and HEXACOL BRILLIANT BLUE (tradename) both available from Paintings, UK, ULTRA MARINE BLUE (tradename) available from Holliday or LEVAFIX TURQUISE BLUE EBA (tradename) available from Bayer, USA.
- the article preferably comprises a cleaning composition or a water softener composition.
- the cleaning composition may be an automatic dishwashing detergent or additive, a laundry detergent or additive, a hard surface cleaning composition (such as an all-purpose cleaner) or a toilet reservoir cleaner.
- Such a coated article has been found to be particularly suitable since the coating material is formed of components allowing a fast decomposition of the coating; in use the article has been found to overcome the problem of residue formation on items being cleaned, said residue being formed of packaging material having poor solubility.
- the cleaning composition may comprise of among others a builder system, a bleach system, a silver protecting system, a protecting system for glass (against glass corrosion), an enzyme system, a viscosity modifier, a perfume or odor control system, one or more colourants, an acidity modifier, a bactericide / fungicide, a surfactant system, and a polymer system comprising a polymer supporting spotting characteristics and/or a polymer supporting filming characteristics (like for example discussed in EP-A 1299 513 , 1 363 986 , WO 95/12654 or EP-A 0 877 002 ) and a tablet disintegrate without being limited to these ingredients.
- a builder system a bleach system, a silver protecting system, a protecting system for glass (against glass corrosion), an enzyme system, a viscosity modifier, a perfume or odor control system, one or more colourants, an acidity modifier, a bactericide / fungicide, a surfactant system,
- ingredients of the composition do not limit the present invention and any suitable detergent composition for different purposes can be used.
- Typical components of automatic dishwashing compositions are disclosed for example in EP-A 1 268 729 , EP-A 1 299 513 , EP-A 1 571 198 , EP-A 1 520 908 and EP-A 1 524 313 . All the components described therein may be part of the compositions coated according to the present invention..
- the composition may be formulated having regard to the fact that the user will not come into contact with the composition, whether by inhalation or by skin contact.
- the composition may include an enzyme, without concern about physical contact between the composition containing the enzyme, and the user.
- dishwashing compositions particularly preferred dishwashing compositions comprising silver protection systems, low phosphate content and a polymer system providing good spotting and filming characteristics.
- a fast dissolving rate is achieved by a thin coating of said water dissolvable material.
- the present invention uses coatings of water dissolvable materials with thicknesses between 5 ⁇ m and 1000 ⁇ m, more preferably between 20 ⁇ m and 600 ⁇ m.
- said unit coated detergent may be provided in a bag which contains substantially in a loose manner the detergent particles.
- said unit packaged detergents are delivered in a container made of any material, like carton, plastic or metal if required supplied with a coating.
- said unit coated detergent may comprise an additive which provides an unbearable bitter taste, particularly in case the coating comprises any sugar.
- This additive may be coated onto said detergent composition, either as part of the water soluble coating or as a separate coating. This improves the prevention that children may accidentally ingest the complete detergent.
- the unit coated detergent according to the present invention may be manufactured in the following way:
- the water soluble material prepared as a solution, melt or dispersion comprising all components desired to be in the coating, is coated onto the material by any suitable method.
- the material is coated by spraying, dipping, immersing or similar.
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Abstract
The present invention relates to a coated detergent and/or additive composition e.g. for the dish washing or laundry machine or water softener tablets coated with a water soluble / dissolvable /disperible material and a process of manufacturing thereof.
Description
- The present invention relates to a coated detergent and/or additive composition e.g. for the dish washing or laundry machine or water softener tablets coated with a water or temperature dissolvable material and a process of manufacturing thereof.
- The traditional form of detergent and/or additive compositions for use in dish washing or washing machines is granules or non particulate solids such as bars or tablets or briquettes. In the following, the term tablet will refer to any form of non particulate solids. For automatic dish washing or washing machines, said detergent and/or additive tablets or granules are respectively placed or poured in the dispenser located in said machine or in an adequate dispensing device which is then placed in said machine.
- Up to now it is very common to provide detergent tablets as packaged pieces, either in a package which has to be opened before the tablet is put in the dish washing machine or washing machine, or packaged in a water soluble package left around the tablet when putted in the machine. Water soluble packages comprising an agent to be dispensed in an aqueous medium are well known.
- In order to simplify the dosing of detergents for a washing cycle in a machine and to avoid wasting through spillage during the dosing action,
EP-A 700 989 - To avoid the unwrapping of the detergent from the packaging has several advantages. First, said unit packaged detergent prevents wasting through spillage of the detergent and/or additive composition. Second, said unit packaged detergent eliminates the need for the user to estimate the dosage of said composition required and ensures that the correct dosage of said composition per wash cycle is used by the user. Third, the fingers of a user do not come in contact with the wrapped detergent composition.
-
WO 04/20509 - Residues of the film or foil used as soluble wrapping material may soil e.g. the dish washing machines, dependent from the used film or foils. Independent from the solubility of the films or foils used for wrapping /packaging of the detergent particles the process of manufacture has to include a wrapping /packaging step, which affects the speed of the manufacture process.
- Unwrapped tablets having a coating primarily are provided for laundry dishwashing compositions, particularly for increasing mechanical resistance of the tablet and for stabilise them.
WO00/66701 -
US 6,576,599 discloses dishwashing tablets having a water insoluble coating for improving mechanical stability of the tablets. -
WO 04/ 20569 A1 - The object of the present invention was to provide a detergent composition providing safe and easy handling for the user and a fast and easy production process for said composition.
- This object is met by a unit coated detergent composition, wherein the detergent composition is coated with a water dissolvable or dispersible coating comprising at least one compound, selected from cellulose, starch or starch derivatives, pectine, proteins or peptides, particularly gelatine, sugar(s) or amino acid(s).
- In the following any detergent and/or additive compositions will be encompassed by the term "detergent". This detergent composition may be in the form of granules or of any non particulate solids such as bars or tablets or briquettes. The word "tablet" encompasses in the following any form of non particulate solids. Said tablet may have any shape. Preferably, said solid detergent tablet is formed in a shape to ensure the uniform dissolution of the tablet in the wash liquor. According to one preferred embodiment of the present invention the detergent and/or additive composition may comprise any ingredients known in the art for dish washing, laundry or water softening. Such ingredients may include for example surfactants, suds suppressers, bleach systems, chelating agents, builders, enzymes, fillers and perfumes, however, is not limited to these.
- One particular preferred embodiment of the present invention is a shaped body for automatic dishwashing formed of a particulate detergent composition , wherein the detergent composition comprises any of the ingredients which are typical for such compositions. Such ingredients are not limiting the invention, however, examples of suitable ingredients are listed below.
- According to the present invention, a predosed quantity of detergent is coated with a water soluble or dissolvable material to provide a coated detergent particle as a "unit coated detergent". The wording "unit coated detergent" means an amount of detergent suitable for one wash. Nevertheless, two or more unit coated detergents according to the present invention may be used in a single wash to meet different washing conditions, like dirtiness of washing, amount of washing, volume of washing machine, hardness of water, temperature of water and type of detergent. Said coating is made of a water or temperature dissolvable material. The unit coated detergent according to the present invention may contain between 5 grams and 60 grams of detergent.
- This unit coated detergent of the present invention is placed in the machine without any further handling step. This is possible, since said coating is made of a water solvable, dissolvable or dispersible material. Providing the detergent in coated form has several advantages. First, said unit coated detergent prevents wasting through spillage of the detergent and/or additive composition. Spillage may occur during the measuring and/or dispensing into the dispenser of the washing machine or into a dispensing device. Second, said unit coated detergent eliminates the need for the user to estimate the dosage of said composition required and ensures that the correct dosage of said composition per wash cycle is used by the user. Therefore, separate measuring and/or dosing devices are superfluous. Third, the fingers of a user do not come in contact with the detergent composition, which means that the user avoids to soil its fingers and/or hands. Either in case of water solvable films wrapped around the detergent unit people may be confused and try to open said wrapping.
- As one feature of the present invention, the coating of the unit coated detergent is made of a material which is water soluble or dissolves in water or is dispersible in water, is harmless for the user and can be processed at high speed during manufacture of the coating of detergent compositions.
- In the preferred embodiments said coating material comprises
- A.) at least one water soluble or dissolvable polymer selected from:
- a protein or a peptide having at least 10, preferably at least 50, more preferred at least 80, most preferred at least 100 amino acids. The most preferred protein is gelatine. Enzymes in their active form are not preferred.
- sugar polymers like cellulose, starch, starch derivatives, pectines like glycogene.
- shellac, preferably degreased.
- B.) low molecular sugars comprising 1 to 10 sugar units or any amino acid, preferably natural amino acids or a mixture of sugars, a mixture of amino acids or a mixture of sugars and amino acids. The coating may consist essentially of these compounds.
- C.) a mixture of compounds mentioned in A.) and B.)
- D.) a mixture of compounds mentioned in A.), B.) or C.) with further homo- and/or blockcopolymers.
- E.) a blend of compounds mentioned in A.), B.), C.) or D.) with compounds either non-ionic, amphoter, anionic or cationic like
- a shellac type
- polyethyleneglycole (PEG)
- poly(meth)acrylic acid (co)polymers
- vinylacetate
- quaternized polyvinylalcohole
- or derivatives thereof.
- F.) a blend of compounds mentioned in A.), B.), C.), D.) or E.) with compounds either non-ionic, amphoter, anionic or cationic like
- a) water-soluble nonionic polymers from the group of
- a1) polyvinyl pyrrolidones,
- a2) vinyl pyrrolidone/vinyl ester copolymers,
- a3) cellulose ethers
- b) water-soluble amphoteric polymers from the group of
- b1) alkyl acrylamide/acrylic acid copolymers,
- b2) alkyl acrylamide/methacrylic acid copolymers,
- b3) alkyl acrylamide/methyl methacrylic acid copolymers,
- b4) alkyl acrylamide/acrylic acid/alkylaminoalkyl (meth)acrylic acid copolymers,
- b5) alkyl acrylamide/methacrylic acid/alkylaminoalkyl (meth)acrylic acid copolymers,
- b6) alkyl acrylamide/methyl methacrylic acid/alkylaminoalkyl (meth)acrylic acid copolymers,
- b7) alkyl acrylamide/alkyl methacrylate/alkylaminoethyl methacrylate/alkyl methacrylate copolymers,
- b8) copolymers of
- b8i) unsaturated carboxylic acids,
- b8ii) cationically derivatized unsaturated carboxylic acids,
- b8iii) optionally other ionic or nonionic monomers,
- c) water-soluble zwitterionic polymers from the group of
- c1) acrylamidoalkyl trialkylammonium chloride/acrylic acid copolymers and alkali metal and ammonium salts thereof,
- c2) acrylamidoalkyl trialkylammonium chloride/methacrylic acid copolymers and alkali metal and ammonium salts thereof,
- c3) methacroyl ethyl betaine/methacrylate copolymers,
- d) water-soluble anionic polymers from the group of
- d1) vinyl acetate/crotonic acid copolymers,
- d2) vinyl pyrrolidone/vinyl acrylate copolymers,
- d3) acrylic acid/ethyl acrylate/N-tert.-butyl acrylamide terpolymers,
- d4) graft polymers of vinyl esters, esters of acrylic acid or methacrylic acid idividually or in admixture copolymerized with crotonic acid, acrylic acid or methacrylic acid with polyalkylene oxides and/or polyalkylene glycols,
- d5) grafted and crosslinked copolymers from the copolymerization of
- d5i) at least one monomer of the nonionic type,
- d5ii) at least one monomer of the ionic type,
- d5iii) polyethylene glycol and
- d5iv) a crosslinking agent,
- d6) copolymers obtained by copolymerization of at least one monomer of each of the following three groups:
- d6i) esters of unsaturated alcohols and short-chain saturated carboxylic acids and/or esters of short-chain saturated alcohols and unsaturated carboxylic acids,
- d6ii) unsaturated carboxylic acids,
- d6iii) esters of long-chain carboxylic acids and unsaturated alcohols and/or esters of the carboxylic acids of group d6ii) with saturated or unsaturated, linear or branched C8-18 alcohols,
- d7) terpolymers of crotonic acid, vinyl acetate and an allyl or methallyl ester,
- d8) tetrapolymers and pentapolymers of
- d8i) crotonic acid or allyloxyacetic acid,
- d8ii) vinyl acetate or vinyl propionate,
- d8iii) branched allyl or methallyl esters,
- d8iv) vinyl ethers, vinyl esters or straight-chain allyl or methallyl esters,
- d9) crotonic acid copolymers with one or more monomers from the group consisting of ethylene, vinyl benzene, vinyl methyl ether, acrylamide and water-soluble salts thereof,
- d10) terpolymers of vinyl acetate, crotonic acid and vinyl esters of a saturated aliphatic monocarboxylic acid branched in the α-position,
- e) water-soluble cationic polymers from the group of
- e1) quaternized cellulose derivatives,
- e2) polysiloxanes containing quaternary groups,
- e3) cationic guar derivatives,
- e4) polymeric dimethyl diallylammonium salts and copolymers thereof with esters and amides of acrylic acid and methacrylic acid,
- e5) copolymers of vinyl pyrrolidone with quaternized derivatives of dialkylaminoacrylate and methacrylate,
- e6) vinyl pyrrolidone/methoimidazolinium chlorid copolymers,
- e7) quaternized polyvinyl alcohol,
- e8) polymers known by the INCI names of polyquaternium 2, polyquaternium 17, polyquaternium 18 and polyquaternium 27.
- a) water-soluble nonionic polymers from the group of
- All the compounds of F.) are described in detail in
EP 1 173 539 B1 . - The compositions mentioned under items A.) to F.) optionally can comprise a binder material.
- In case of coating compositions A.) to C.) said compositions may comprise at least 5% by weight, preferably at least 15 % by weight, more preferably at least 35 % by weight, most preferably at least 50 % by weight and up to 100% by weight, or up to 90 % by weight, maybe up to 75 % by weight of the materials mentioned in A.) to C.)
- In case of coating compositions D.) to F.) said compositions may comprise at least 5% by weight, preferably at least 15 % by weight, more preferably at least 35 % by weight, most preferably at least 50 % by weight of the compounds mentioned in A.) to C.) and 5 to 95, preferably 10 to 75, more preferably 15 to 50 % by weight of at least one of the compounds mentioned in D.) to F.) as further compounds.
- A preferred water soluble low molecular weight compound is any type of sugar, amino acid or other low molecular acids, e.g. citric acid or the like. One particular advantage of these materials is on one side the water solubility / dispersibility on the other hand the non-toxicity of the compounds.
- When used as a material for the formation of a water soluble/dispersible coating use of cellulose, starch, pectine, gelatine and/ or low molecular sugar or amino acid compounds as the water soluble/dissolvable/dispersible material has been found to be particularly suitable, specifically by displaying a very short dissolution/dispersion time, by being harmless (common ingredients of food) and also by producing a very low amount of remains in use. On the other hand the use of said materials provides a very high speed preparation process.
- When referring to the material, water-soluble/dissolvable/disperible is herein defined when more than 99% of a coating (layer) of such material dissolves within 15 minutes in a beaker containing 1 L of deionised water at 40° C which is stirred with a stirrer revolving at 200 r. p.m. It is pointed out that materials can be used as ingredients for the coating which itself may not be soluble, but e.g. dispersible, as long as the coating comprising said material is dissolved by water.
- One of the preferred water soluble / dissolvable / dispersible materials is cellulose, particularly preferred cellulose fibres or microcristalline cellulose with an average particle size in dry state of below 1000µm, preferably below 500µm, more preferred 250µm or smaller and particularly preferred of between 20 and 150µm; starch or starch derivatives, pectine like glycogene or proteins or peptides (at least 10mer), particularly gelatine or derivatives or peptide fragments thereof. Another suitable and preferred material is shellac, which preferably is used in degreased form. Further suitable compounds are "low molecular weight compounds" like C3-C6 sugars in aldose or ketose form like allose, altrose, glucose, mannose, gulose, idose, galactose, talose, psicose, fructose, sorbose, tagatose, xylulose, ribulose, ribose, arabinose, xylose, lyxose, threose, erythrose, erythrulose, dihydroxy acetone or glycerol aldehyde or disaccharides like for example saccharose, lactose, maltose or Isomalt or oligosaccharides comprising 3 to 10 sugar units or amino acids, preferably natural amino acids (commonly contained in natural proteins) without being restricted to the mentioned examples. One particularly preferred low molecular weight compound is the sugar Isomalt ST, comprising 6-O-α-D-glucopyranosyl-D-sorbite and 1-O- α-D-glucopyranosyl-D-mannite dihydrate units. Further information about said sugar is available under www.chemistryworld.de/preise/prs-html/analysen/2444-spz.htm.
- Said materials can be used solely each or as a mixture of the single materials. In one preferred embodiment the mentioned material(s) of A.) to F.) can form one layer on the surface of the unit composition, in an alternative preferred embodiment the unit composition comprises at least two layers of the above mentioned materials, wherein the layers can comprise different material selected from A.) to F.) , as well as different combinations of the material(s) of A.) to F.) as mentioned above.
- In one embodiment the above mentioned water soluble / dissolvable / dispersible compounds are used in combination with an additional water soluble or dispersible polymer. In case water soluble/dispersible polymer is used it will be appreciated that the water soluble polymer may comprise a homopolymer or a copolymer. In case the water soluble polymer comprises a copolymer the copolymer may be a random or block copolymer.
- A suitable additional water soluble polymer may comprise a cellulose derivative such as a cellulose ether e.g. hydroxypropyl cellulose, carboxymethyl cellulose, or the polymer comprises monomers of polyvinyl alcohol, polyvinyl pyrrolidone, partially hydrolysed polyvinyl acetate, polyvinyl acetate, modified acrylic, fumaric, maleic, itaconic, aconitic, mesaconic, citraconic and methylenemalonic acid or their salts, maleic anhydride, acrylamide, alkylene, vinylmethyl ether or styrene. Such polymers can either be homo- or copolymers of the mentioned monomer units. Preferred are polyvinyl pyrrolidone homopolymers or copolymers of polyvinylalcohol, preferably copolymers of polyvinylalcohol and polycarboxylates, most preferred are copolymers of polyvinylalcohol with maleic acid or (meth)acrylic acid.
- The water soluble polymer preferably has dispersant, anti-redeposition, soil releasing or other detergency properties.
- The additional water soluble polymer may further be a polymer comprising sulfonic acid groups like e.g. the polymers described in
EP-A 1 299 513 ,EP-A 1 363 986 ,WO 95/12654 EP-A 0 877 002 - The water soluble polymer system may comprise a soil release agent.
- Examples of polymeric soil release agents include those having: (a) one or more nonionic hydrophile components consisting essentially of (i) polyoxyethylene segments with a degree of polymerization of at least 2, or (ii) oxypropylene or polyoxypropylene segments with a degree of polymerization of from 2 to 10, wherein said hydrophile segment does not encompass any oxypropylene unit unless it is bonded to adjacent moieties at each end by ether linkages, or (iii) a mixture of oxyalkylene units comprising oxyethylene and from 1 to 30 oxypropylene units, said hydrophile segments preferably comprising at least 25% oxyethylene units and more preferably, especially for such components having 20 to 30 oxypropylene units, at least 50% oxyethylene units; or (b) one or more hydrophobe components comprising (i) C3 oxyalkylene terephthalate segments, wherein, if said hydrophobe components also comprise oxyethylene terephthalate, the ratio of oxyethylene terephthalate:C3 oxyalkylene terephthalate units is 2:1 or lower, (ii) C4-C6 alkylene or oxy C4-C6 alkylene segments, or mixtures therein, (iii) poly(vinyl ester) segments, preferably polyvinyl acetate, having a degree of polymerization of at least 2, or (iv) C'-C4 alkyl ether or C4 hydroxyalkyl ether substituents, or mixtures therein, wherein said substituents are present in the form of Cj-C4 alkyl ether or C4 hydroxyalkyl ether cellulose derivatives, or mixtures therein, or a combination of (a) and (b). Typically, the polyoxyethylene segments of (a)(i) will have a degree of polymerization of from 1 to 200, although higher levels can be used, preferably from 3 to 150, more preferably from 6 to 100. Suitable oxy C4-C6 alkylene hydrophobe segments include, but are not limited to, end-caps of polymeric soil release agents such as MO3S(CH:)nOCH:CH2O-, where M is sodium and n is an integer from 4-6. Other soil release agents useful herein also include cellulosic derivatives such as hydroxyether cellulosic polymers, copolymeric blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate, and the like. Such agents are commercially available and include hydroxyethers of cellulose such as METHOCEL (Dow). Cellulosic soil release agents for use herein also include those selected from the group consisting of Ct-C4 alkyl and C4 hydroxyalkyl cellulose. Further suitable surfactants include water-soluble cationic ethoxylated amine compounds with particulate soil/claysoil removal and/or anti-redeposition properties. Particularly preferred of these cationic compounds are ethoxylated cationic monoamines, diamines or triamines.
- A preferred coating system in accordance with the invention meets one or more of the following physical parameters:
- a) High suitability for coated materials (e.g. detergents) such as providing an effective barrier to the materials coated therewith and displaying compatibility with hydroscopic and caustic materials.
- b) High solubility in water, for example a 0,3-0,5g of the coating composition material of the present invention dissolves within 20 minutes in a 1L beaker of water at 40° C when stirred at 200 r.p.m and within 30 minutes at 20° C under the same conditions. To meet these properties the material may include a dissolubility modifying additive. Preferred examples of such additives include plasticizers.
- In this regard it will be appreciated that any additives are substantially water soluble or dispersible so that the overall system retains its water solubility / water dispersibility.
- The water soluble coating system may contain a plasticizer with a content of less than 10 wt %, most preferably less than 5%.
- Suitable types of plasticizers include solvents.
- Preferred examples of solvents include alkylene glycol mono lower alkyl ethers, glycerol, propylene glycols, ethoxylated or propoxylated ethylene or propylene, glycerol esters, glycerol triacetate, lower molecular weight polyethylene glycols, lower molecular weight methyl esters and amides.
- Another preferred type of surfactant comprises the medium molecular weight polyethylene glycols (PEGs). Such materials preferably have molecular weights of at least 150. PEGs ofmolecular weight ranging from 200 to 3000 are most preferred. Yet another preferred type of surfactant comprises lower molecular weight methyl esters. Such materials are those of the general formula: R-C(O)- OCH3 wherein R ranges from 1 to 18. Examples of suitable lower molecular weight methyl esters include methyl acetate, methyl propionate, methyl octanoate, and methyl dodecanoate.
- Suitable types of plasticisers also include nonionic surfactants.
- Preferred nonionic surfactants incorporated into the resin provide a suds suppression benefit. The alkyl ethoxylate condensation products of an alcohol with from 1 to 80 moles of an alkylene (liner/branched aliphatic / aromatic optionally subsituted C2 to C20 alkylene) oxide are suitable for this use. The alkyl chain of the alcohol can either be straight or branched, primary or secondary, and generally contains from 6 to 22 carbon atoms. Particularly preferred are the condensation products of alcohols having an alkyl group containing from 8 to 20 carbon atoms with from 2 to 10 moles of ethylene oxide per mole of alcohol. In this regard Suitable surfactants include POLY-TERGENT(R) SLF-18B nonionic surfactants by Olin Corporation.
- Ethoxylated C6-C18 fatty alcohols and C6-C18 mixed ethoxylated/propoxylated fatty alcohols are suitable surfactants for use herein. Preferably the ethoxylated fatty alcohols are the C10-C18 ethoxylated fatty alcohols with a degree of ethoxylation of from 3 to 50, most preferably these are the C12-C18 ethoxylated fatty alcohols with a degree of ethoxylation from 3 to 40. Preferably the mixed ethoxylated/propoxylated fatty alcohols have an alkyl chain length of from 10 to 18 carbon atoms, a degree of ethoxylation of from 3 to 30 and a degree of propoxylation of from 1 to 10.
- The condensation products of ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol are suitable for use herein. The hydrophobic portion of these compounds preferably has a molecular weight of from 1500 to 1800 and exhibits water insolubility. Examples of compounds of this type include certain of the commercially-available Pluronic (TM) surfactants, marketed by BASF.
- The condensation products of ethylene oxide with the product resulting from the reaction of propylene oxide and ethylenediamine are suitable for use herein. The hydrophobic moiety of these products consists of the reaction product of ethylenediamine and excess propylene oxide, and generally has a molecular weight of from 2500 to 3000. Examples of this type of nonionic surfactant include certain of the commercially available Tetronic(TM) compounds, marketed by BASF.
- In a preferred embodiment of the present invention the polymer system may comprises a mixed nonionic surfactant system.
- Suitable compounds include fatty esters of mono- or polyhydric alcohols having from 1 to 40 carbon atoms in the hydrocarbon chain. The fatty acid portion of the fatty ester can be obtained from mono- or poly-carboxylic acids having from 1 to 40 carbon atoms in the hydrocarbon chain. Suitable examples of monocarboxylic fatty acids include behenic acid, stearic acid, oleic acid, palmitic acid, myristic acid, lauric acid, acetic acid, propionic acid, butyric acid, isobutyric acid, Valerie acid, lactic acid, glycolic acid and beta,beta'-dihydroxyisobutyric acid. Examples of suitable polycarboxylic acids include: n-butyl-malonic acid, isocitric acid, citric acid, maleic acid, malic acid and succinic acid. The fatty alcohol radical in the fatty ester can be represented by mono- or polyhydric alcohols having from 1 to 40 carbon atoms in the hydrocarbon chain. Examples of suitable fatty alcohols include; behenyl, arachidyl, cocoyl, oleyl and lauryl alcohol, ethylene glycol, glycerol, ethanol, isopropanol, vinyl alcohol, diglycerol, xylitol, sucrose, erythritol, pentaerythritol, sorbitol or sorbitan. Preferably, the fatty acid and/or fatty alcohol group of the fatty ester adjunct material has from 1 to 24 carbon atoms in the alkyl chain. Preferred fatty esters herein are ethylene glycol, glycerol and sorbitan esters wherein the fatty acid portion of the ester normally comprises a species selected from behenic acid, stearic acid, oleic acid, palmitic acid or myristic acid. The glycerol esters are also highly preferred. Specific examples of fatty alcohol esters for use herein include: stearyl acetate, palmityl all-lactate, cocoyl isobutyrate, oleyl maleate, oleyl dimaleate, and tallowyl proprionate. Fatty acid esters useful herein include: xylitol monopalmitate, pentaerythritol monostearate, sucrose monostearate, glycerol mono stearate, ethylene glycol mono stearate, sorbitan esters. Suitable sorbitan esters include sorbitan monostearate, sorbitan palmitate, sorbitan monolaurate, sorbitan monomyristate, sorbitan monobehenate, sorbitan mono-oleate, sorbitan dilaurate, sorbitan distearate, sorbitan dibehenate, sorbitan dioleate, and also mixed tallow alkyl sorbitan mono- and all-esters. Glycerol monostearate, glycerol mono-oleate, glycerol monopalmitate, glycerol monobehenate, and glycerol distearate are preferred glycerol esters herein. Further suitable agents include triglycerides, mono or diglycerides, and wholly or partially hydrogenated derivatives thereof, and any mixtures thereof. Suitable sources of fatty acid esters include vegetable and fish oils and animal fats. Suitable vegetable oils include soy bean oil, cotton seed oil, castor oil, olive oil, peanut oil, safflower oil, sunflower oil, rapeseed oil, grapeseed oil, palm oil and corn oil.
- Waxes, including microcrystalline waxes are possible lubricants, although much less preferred in the present invention due to their poor solubility in water. Preferred waxes have a melting point in the range from 35° C to 110° C and comprise generally from 12 to 70 carbon atoms. Preferred are petroleum waxes of the paraffin and microcrystalline type which are composed of long-chain saturated hydrocarbon compounds.
- The coating may include a colourant. Colourant when present as a component in the resin is preferably present at a level of from 0.001 wt % to 1.5wt %, preferably from 0.01 wt % to 1.0wt %, most preferably from 0.1wt % to 0.3wt %.
- The colourant may comprise a dye or a pigment. Examples of suitable dyes include reactive dyes, direct dyes, azo dyes. Preferred dyes include phthalocyanine dyes, anthraquinone dye, quinoline dyes, monoazo, disazo and polyazo. More preferred dyes include anthraquinone, quinoline and monoazo dyes. Preferred dyes include SANDOLAN E-HRL 180% (tradename), SANDOLAN MILLING BLUE (tradename), TURQUOISE ACID BLUE (tradename) and SANDOLAN BRILLIANT GREEN (tradename) all available from Clariant UK, HEXACOL QUINOLINE YELLOW (tradename) and HEXACOL BRILLIANT BLUE (tradename) both available from Paintings, UK, ULTRA MARINE BLUE (tradename) available from Holliday or LEVAFIX TURQUISE BLUE EBA (tradename) available from Bayer, USA.
- The article preferably comprises a cleaning composition or a water softener composition. The cleaning composition may be an automatic dishwashing detergent or additive, a laundry detergent or additive, a hard surface cleaning composition (such as an all-purpose cleaner) or a toilet reservoir cleaner.
- Such a coated article has been found to be particularly suitable since the coating material is formed of components allowing a fast decomposition of the coating; in use the article has been found to overcome the problem of residue formation on items being cleaned, said residue being formed of packaging material having poor solubility.
- The cleaning composition may comprise of among others a builder system, a bleach system, a silver protecting system, a protecting system for glass (against glass corrosion), an enzyme system, a viscosity modifier, a perfume or odor control system, one or more colourants, an acidity modifier, a bactericide / fungicide, a surfactant system, and a polymer system comprising a polymer supporting spotting characteristics and/or a polymer supporting filming characteristics (like for example discussed in
EP-A 1299 513 ,1 363 986 ,WO 95/12654 EP-A 0 877 002 ) and a tablet disintegrate without being limited to these ingredients. The ingredients of the composition, however, do not limit the present invention and any suitable detergent composition for different purposes can be used. Typical components of automatic dishwashing compositions are disclosed for example inEP-A 1 268 729 ,EP-A 1 299 513 ,EP-A 1 571 198 ,EP-A 1 520 908 andEP-A 1 524 313 . All the components described therein may be part of the compositions coated according to the present invention.. - The composition may be formulated having regard to the fact that the user will not come into contact with the composition, whether by inhalation or by skin contact. For example, the composition may include an enzyme, without concern about physical contact between the composition containing the enzyme, and the user.
- Preferred are dishwashing compositions, particularly preferred dishwashing compositions comprising silver protection systems, low phosphate content and a polymer system providing good spotting and filming characteristics.
- A fast dissolving rate is achieved by a thin coating of said water dissolvable material. Preferably, the present invention uses coatings of water dissolvable materials with thicknesses between 5 µm and 1000 µm, more preferably between 20 µm and 600 µm.
- As options, said unit coated detergent may be provided in a bag which contains substantially in a loose manner the detergent particles. Preferably, said unit packaged detergents are delivered in a container made of any material, like carton, plastic or metal if required supplied with a coating.
- As a further option, said unit coated detergent may comprise an additive which provides an unbearable bitter taste, particularly in case the coating comprises any sugar. This additive may be coated onto said detergent composition, either as part of the water soluble coating or as a separate coating. This improves the prevention that children may accidentally ingest the complete detergent.
- The unit coated detergent according to the present invention may be manufactured in the following way:
- The detergent composition is prepared in its granular or particulate form;
- the granular or particulate detergent composition may be formed into a tablet of the desired shape and size by any of the methods known in the art, for example selected from the group of: compression, extrusion and casting, whereas said detergent composition is homogeneously distributed throughout the tablet or comprises different layers or phases of certain detergent ingredients;
- a water dissolvable or dispersible material is prepared as an aqueous or organic solution or dispersion (which means that the material is solved or dispersed in an aqueous system or a system comprising at least one organic solvent like alcohol or similar) or a melt (e.g. in case of sugars);
- The water soluble material, prepared as a solution, melt or dispersion comprising all components desired to be in the coating, is coated onto the material by any suitable method. Preferably the material is coated by spraying, dipping, immersing or similar.
optionally the unit coated detergent passes a drying step and/or a stabilizing / solidifying step, the last two mentioned steps (coating and drying) optionally can be repeated to provide more than one, preferably at least two layers of the water dissolvable or dispersible material.
Claims (9)
- A unit coated detergent composition, wherein the detergent composition is coated with a water dissolvable or dispersible coating comprising at least one compound, selected from cellulose, starch or starch derivatives, pectine, proteins or peptides, particularly gelatine, shellac, sugar(s) or amino acid(s).
- Use of a water dissolvable or dispersible material selected from cellulose, starch or starch derivatives, pectine, proteins or peptides, particularly gelatine, shellac, sugar or amino acid for coating a detergent composition.
- A process of manufacturing a detergent composition of claim 1, comprising the step of coating the detergent unit with an aqueous or organic solution or dispersion or a melt comprising the water dissolvable or dispersible material.
- A unit coated detergent composition according to claim 1, use according to claim 2 or process according to claim 3, wherein the coating further comprises a polymer or copolymer having monomer units of carboxylic acids and/ or unsaturated compounds.
- Composition, use or process according to any of claims 1 to 4, wherein the detergent composition is a dish washing, laundry detergent or water softener composition.
- Composition, use or process according to claim 5, wherein the dish composition is boron free.
- Composition, use or process according to claims 5 or 6, wherein the dish composition is tablet shaped.
- Composition, use or process according to any of claims 1 to 7, wherein the water dissolvable or dispersible material provides one, or at least two layers.
- Process according to any of claims 3 to 8, wherein the coating step(s) is selected form spraying, dipping and immersing.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06019837A EP1903099A1 (en) | 2006-09-22 | 2006-09-22 | Coated detergent compositions and manufacture process |
EP07818237A EP2126032B1 (en) | 2006-09-22 | 2007-09-19 | Coated detergent compositions and manufacture process |
PCT/EP2007/008137 WO2008034594A1 (en) | 2006-09-22 | 2007-09-19 | Coated detergent compositions and manufacture process |
ES07818237T ES2406068T3 (en) | 2006-09-22 | 2007-09-19 | Coated detergent compositions and manufacturing process |
RU2009115207/04A RU2462508C2 (en) | 2006-09-22 | 2007-09-19 | Composition for film-coated detergents and production method |
UAA200903929A UA98942C2 (en) | 2006-09-22 | 2007-09-19 | Single packaged detergent-coated composition and process for its preparation |
PL07818237T PL2126032T3 (en) | 2006-09-22 | 2007-09-19 | Coated detergent compositions and manufacture process |
MEP-86/09A MEP8609A (en) | 2006-09-22 | 2007-09-19 | Coated detergent compositions and manufacture process |
NO20091206A NO20091206L (en) | 2006-09-22 | 2009-03-23 | Coated detergent compositions and preparation feed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP06019837A EP1903099A1 (en) | 2006-09-22 | 2006-09-22 | Coated detergent compositions and manufacture process |
Publications (1)
Publication Number | Publication Date |
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EP1903099A1 true EP1903099A1 (en) | 2008-03-26 |
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Application Number | Title | Priority Date | Filing Date |
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EP06019837A Withdrawn EP1903099A1 (en) | 2006-09-22 | 2006-09-22 | Coated detergent compositions and manufacture process |
EP07818237A Active EP2126032B1 (en) | 2006-09-22 | 2007-09-19 | Coated detergent compositions and manufacture process |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP07818237A Active EP2126032B1 (en) | 2006-09-22 | 2007-09-19 | Coated detergent compositions and manufacture process |
Country Status (8)
Country | Link |
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EP (2) | EP1903099A1 (en) |
ES (1) | ES2406068T3 (en) |
ME (1) | MEP8609A (en) |
NO (1) | NO20091206L (en) |
PL (1) | PL2126032T3 (en) |
RU (1) | RU2462508C2 (en) |
UA (1) | UA98942C2 (en) |
WO (1) | WO2008034594A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2196531A1 (en) | 2008-12-05 | 2010-06-16 | Dalli-Werke GmbH & Co. KG | Polymer coated detergent tablet |
WO2014024170A1 (en) * | 2012-08-09 | 2014-02-13 | Ecover Co-Ordination Center Nv | Tablet coating |
ITUB20159349A1 (en) * | 2015-12-18 | 2017-06-18 | Deoflor Spa | PROCESS TO COVER PRODUCTS FOR THE CARE OF HEALTHCASES WITH A HYDRO-SOLUBLE COATING. |
US20180371383A1 (en) * | 2015-12-04 | 2018-12-27 | Eurotab | Coated detergent tablet |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TR201901858T4 (en) | 2015-08-11 | 2019-03-21 | Unilever Nv | Water Soluble Package |
US20190031982A1 (en) | 2016-02-09 | 2019-01-31 | Conopco, Inc. D/B/A Unilever | Water-soluble package |
US11649416B2 (en) | 2017-10-13 | 2023-05-16 | Conopco, Inc. | Aqueous spray composition comprising silicone and perfume microemulsions |
WO2019072645A1 (en) | 2017-10-13 | 2019-04-18 | Unilever Plc | Aqueous spray composition |
CN111212895A (en) | 2017-10-13 | 2020-05-29 | 荷兰联合利华有限公司 | Aqueous spray composition |
EP3694966A1 (en) | 2017-10-13 | 2020-08-19 | Unilever PLC | Fabric spray compositions |
FR3113065A1 (en) * | 2020-07-31 | 2022-02-04 | Eurotab Operations | New coated detergent tablet |
Citations (5)
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EP0481547A1 (en) * | 1990-10-17 | 1992-04-22 | Unilever N.V. | Machine dishwashing detergent tablets |
EP0716144A2 (en) * | 1994-11-14 | 1996-06-12 | Unilever Plc | Detergent tablet having a water-soluble coating |
WO1999051210A1 (en) * | 1998-04-02 | 1999-10-14 | Genencor International, Inc. | Modified starch coating |
WO2001064829A1 (en) * | 2000-03-01 | 2001-09-07 | The Procter & Gamble Company | Solid bodies |
WO2002097025A1 (en) * | 2001-05-25 | 2002-12-05 | Henkel Kommanditgesellschaft Auf Aktien | Method and additives required for increasing the stability of tablets |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US3297535A (en) * | 1963-02-28 | 1967-01-10 | Hoffmann La Roche | Shellac tablet coating compositions and methods of preparation |
DE69911623T2 (en) * | 1998-07-17 | 2004-07-01 | The Procter & Gamble Company, Cincinnati | detergent tablet |
-
2006
- 2006-09-22 EP EP06019837A patent/EP1903099A1/en not_active Withdrawn
-
2007
- 2007-09-19 PL PL07818237T patent/PL2126032T3/en unknown
- 2007-09-19 WO PCT/EP2007/008137 patent/WO2008034594A1/en active Application Filing
- 2007-09-19 EP EP07818237A patent/EP2126032B1/en active Active
- 2007-09-19 ME MEP-86/09A patent/MEP8609A/en unknown
- 2007-09-19 ES ES07818237T patent/ES2406068T3/en active Active
- 2007-09-19 RU RU2009115207/04A patent/RU2462508C2/en not_active IP Right Cessation
- 2007-09-19 UA UAA200903929A patent/UA98942C2/en unknown
-
2009
- 2009-03-23 NO NO20091206A patent/NO20091206L/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0481547A1 (en) * | 1990-10-17 | 1992-04-22 | Unilever N.V. | Machine dishwashing detergent tablets |
EP0716144A2 (en) * | 1994-11-14 | 1996-06-12 | Unilever Plc | Detergent tablet having a water-soluble coating |
WO1999051210A1 (en) * | 1998-04-02 | 1999-10-14 | Genencor International, Inc. | Modified starch coating |
WO2001064829A1 (en) * | 2000-03-01 | 2001-09-07 | The Procter & Gamble Company | Solid bodies |
WO2002097025A1 (en) * | 2001-05-25 | 2002-12-05 | Henkel Kommanditgesellschaft Auf Aktien | Method and additives required for increasing the stability of tablets |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2196531A1 (en) | 2008-12-05 | 2010-06-16 | Dalli-Werke GmbH & Co. KG | Polymer coated detergent tablet |
EP2196531B1 (en) * | 2008-12-05 | 2014-09-03 | Dalli-Werke GmbH & Co. KG | Polymer coated detergent tablet |
WO2014024170A1 (en) * | 2012-08-09 | 2014-02-13 | Ecover Co-Ordination Center Nv | Tablet coating |
BE1020860A3 (en) * | 2012-08-09 | 2014-06-03 | Ecover Co Ordination Ct Nv | TABLET COATING. |
US20180371383A1 (en) * | 2015-12-04 | 2018-12-27 | Eurotab | Coated detergent tablet |
US10927330B2 (en) | 2015-12-04 | 2021-02-23 | Eurotab | Coated detergent tablet |
ITUB20159349A1 (en) * | 2015-12-18 | 2017-06-18 | Deoflor Spa | PROCESS TO COVER PRODUCTS FOR THE CARE OF HEALTHCASES WITH A HYDRO-SOLUBLE COATING. |
WO2017103875A1 (en) * | 2015-12-18 | 2017-06-22 | Deoflor S.P.A. | Process for covering a toilet care product with a water-soluble coating |
Also Published As
Publication number | Publication date |
---|---|
WO2008034594A1 (en) | 2008-03-27 |
RU2009115207A (en) | 2010-10-27 |
NO20091206L (en) | 2009-04-22 |
ES2406068T3 (en) | 2013-06-05 |
EP2126032B1 (en) | 2013-03-06 |
UA98942C2 (en) | 2012-07-10 |
MEP8609A (en) | 2011-12-20 |
PL2126032T3 (en) | 2013-08-30 |
EP2126032A1 (en) | 2009-12-02 |
RU2462508C2 (en) | 2012-09-27 |
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