ES2255638T3 - WATER SOLUBLE POLYEDRICAL CONTAINER WITH DETERGENT LIQUID OF COLADA IN COAT - Google Patents

Abstract

A layered liquid detergent composition in a water-soluble single use package, wherein the package is in the shape of a polyhedron, preferably a tetrahedron. The composition comprises at least two layers, hydrophilic and hydrophobic, with the hydrophobic layer preferably on top. The hydrophobic layer preferably comprises a sensitive benefit ingredient (e.g., enzyme), which is contained predominantly in the hydrophobic layer. By virtue of the shape of the package, the interface between the top layer and the next lower layer is minimized, which in turn leads to a reduced interaction between the two layers, resulting in the increased stability of the ingredient in the top layer.

Description

Water-soluble polyhedral container with detergent Layered pouring liquid.

Field of the Invention

A single use polyhedral container soluble in water, which comprises liquid detergent with at least two layers in the portion of water soluble structure and a procedure for its preparation.

Background of the invention

Detergent compositions are provided of many forms, of which granular and liquid compositions They are the most predominant. More recently, they have been proposed unit dose forms in the form of compressed tablets of detergent powder or water soluble containers, which are consumed during a single cleaning application. Dosage forms units are preferred by some consumers, as the dose is previously measured and, consequently, the dosage form Unitary is faster, easier and less complicated to use. The water soluble containers filled with a detergent composition liquid are especially desired by consumers who are used to liquid detergents.

Water-soluble unit dose containers Containing liquids are known. See, for example, Kennedy (U.S. Patent 4,973,416), Dickler et al. (U.S. Patent 6,037,319), Haq (US Patent 4,416,791) and Richardson (Patent from the USA 4,115,292). The containers may contain different quantities, which include relatively high amounts of water. See, for example, documents WO 94/14941, EP 518,689, WO 97/27743 and JP 06 / 340,899.

Containers of various shapes are described by Huff, U.S. Pat. No. 6,040,286, Buchanan, U.S. Pat. nº 5,273,362, Anderson, U.S. Pat. No. 4,810,844, Mahler et al., U.S. Patent No. 4,223,029, Wierenga et al., U.S. Pat. No. 5,002,681, Smith et al., U.S. Pat. No. DES 392,559, Buchanan et al., U.S. Pat. No. 5,135,464 and Buchanan et al., U.S. Patent No. 6,120,183. Giesen, U.S. Pat. 2,444,987; Schneider et al., U.S. Pat. 3,367,489; Shaw et al., U.S. Patent 3,618,758; Guerry et al., U.S. Pat. 4,176,079; Davies et al., U.S. Pat. 4,410,441; Ginn, U.S. Patent 4,588,080; Ginn, U.S. Pat. 4,680,916; Leigh et al., U.S. Pat. 4,706,802; Gouge et al., Patent from the USA 5,224,601; Saam, U.S. Pat. 5,927,498.

Sometimes it is desirable to separate various ingredients of the detergent composition. See, for example, WO 01/60966 describing a water soluble bag with multiple compartments It is also desirable to increase the visual appeal of the packaging and also provide a unique appearance that is associated by consumers to a particular product. It is also desirable to provide a visual indication to a consumer of the presence of a special ingredient (for example, advantageous) in the composition.

EP 116422, EP 175485, GB 1247189, WO 99/47635 and Ginn (U.S. Patent 4,348,292) describe double layer liquid cleaning compositions in a bottle or a water insoluble container. The layers are achieved using a electrolyte, which when added to a surfactant solution aqueous, forces the separation of the surfactant from the aqueous phase. The phenomenon of separating an organic component from an aqueous layer, by adding a salt (electrolyte) it is known as "saline separation". Salt increases the ionic character of water and set aside the organic component, less polar.

Another known technique to separate ingredients In a common container includes encapsulation. The technology of the Encapsulation is well known for different applications. Generally, encapsulation includes a medium that surrounds at least a component and thus provides a barrier between the component "encapsulated" and other components. The barrier is normally provisional and is designed to decompose and release material encapsulated at the desired time, as at a temperature in particular, after the reaction or dissolution with chemicals, or Due to mechanical stress. Encapsulation methods include coacervation, liposome formation, granulation, lining, emulsification, atomization and spray cooling.

See, for example, descriptions of Enzyme encapsulates and encapsulation procedures: Falholt and cols. (U.S. Patent 4,906,396, UK documents 2,116,884 and EP 0.273.775), Tsaur et al. (U.S. Patent 5,434,069 and 5,441,660), Ratuiste et al. (U.S. Patent 5,589,370). See also Mitchnik et al. (U.S. Patent 5,733,531) and Leong (U.S. Patent 5,296,166).

It is desirable to provide a composition liquid detergent layered in a single-use container soluble in water, which provides additional protection to the ingredients sensitive

Summary of the invention

The present invention includes a composition liquid detergent layered in a single-use container soluble in water, in which the container is in the form of a polyhedron, preferably a tetrahedron. The composition comprises at least two layers, hydrophilic and hydrophobic, with the hydrophobic layer preferably on top. The hydrophobic layer preferably comprises a sensitive advantageous ingredient (for example, enzyme), which is predominantly contained in the hydrophobic layer. Due to the way of the container, the interfacial surface between the layer is minimized upper and the next lower layer, which in turn leads to a reduced interaction between the two layers, leading to increased stability of the ingredient in the top layer.

The following detailed description and examples illustrate some of the effects of the compositions of the invention. The invention and the claims, however, do not They are limited to the following description and examples.

Detailed description of the invention

All quantities are by weight of the liquid detergent composition, unless otherwise specified thing.

It should be noted that in the specification of any concentration range, any concentration particular superior can be associated with any concentration lower particular.

For the avoidance of doubt, the expression "that includes "is intended to mean" that includes ", but not necessarily "consisting of" or "composed of". In other words, the stages or options mentioned do not have to be exhaustive

"Water soluble structure", as used in The present specification, means soluble in cold water, is that is, soluble at 5 ° C and above.

"Liquid", as used herein descriptive memory means that a continuous phase or part predominant of the composition is liquid and that a composition is fluid at 20 ° C. Solids may be included (for example, in suspension or others).

"Seal" or "sealed", as used in the This specification includes both heat sealing and sealed with water.

"Transparent", as used herein Descriptive report, includes both transparent and translucent and means that an ingredient, or a mixture, or a phase, or a composition, or a container according to the invention preferably has a transmittance of more than 25%, more preferably more than 30%, what more preferably more than 40%, optimally more than 50% in the part visible spectrum (approx. 400-800 nm). Alternatively, the absorbance can be measured as less than 0.6 (approximately equivalent to a 25% transmission) or for having a transmittance greater than 25% in which

% transmittance equals: 1/10 absorbance x 100%

For the purposes of the invention, to the extent that a wavelength in the range of visible light has more than 25% transmittance, is considered to be transparent / translucent.

The expression "composition" or the expression "liquid detergent composition", as used herein Descriptive memory means the final detergent composition (it is say, the detergent composition itself, but not the structure water soluble), which includes at least two layers.

Water soluble structure portion

The package is preferably made of a water soluble, sealable and transparent film as poly (vinyl alcohol). The thickness may vary in the range of 25 to 100 µm, more preferably 35 to 80 µm, most preferably from 45 to 75 µm. Other materials from of which the package can be prepared include, but are not limited to, methyl hydroxypropyl cellulose and poly (ethylene oxide). The polyvinyl alcohol is preferred due to its easy availability and low cost. A Poly (vinyl alcohol) film supplier is Monosol LLC. European suppliers of suitable films include, but are not limited to, Monosol supplied by Monosol LLC, or PT supplied by Aicello or the K series supplied by Kurary or Hydrofilm supplied by Rainier Specialty Polymers Ltd or the series QSA by Polymer Films, Inc.

Preferably, the water soluble film of the base wall is the same material as used to prepare The wall of the structure. Both thermoforming are possible such as cold forming (for example, with water).

The water soluble container of the invention is in the shape of the polyhedron that has four or more walls than each wall is tilted at an angle relative to each other wall.

Preferably, the inclination of each wall is between 30 and 90 degrees, more preferably between 30 and 60 degrees.

In a preferred embodiment, the package is in the shape of a tetrahedron (four-wall polyhedron). Tetrahedron it can be regular or irregular, that is, the walls can adopt the shape of regular or irregular polygons. The tetrahedron shape is advantageous in that it can be a fairly simple structure of manufacturing (compared to other polyhedra with more walls) and at the same time the inclination of each wall is optimized in relation to to each of the other walls. The container can be shaped by any suitable method, but preferably it is conformed to from a flexible film arranged in folded configuration and sealed with one or more longitudinal seals; and the first and second final seals located at opposite ends of the container, where the first end seal is substantially orthogonal to the seal longitudinal or each of them and inclined at an angle to to the seal of the second end.

With this arrangement, the container can be shaped like a polyhedron adapting the filling machinery and sealing of existing vertical forms, thus reducing the costs of Packaging production according to the invention.

Preferably, the relative inclination of the First and second end seals is between 30 and 90 degrees. In a preferred embodiment, the first and second end seals they are orthogonally oriented relative to each other. This Provides a tetrahedral container.

The transition between adjacent walls can be slightly curved (for example, due to the force exerted by the container content, and flexibility of the packaging material) while at the same time, different walls can still be observed and are still distinguishable from each other.

The walls can be substantially smooth, without however this is not essential, in fact, the wall or each wall can have a slight curvature (for example, due to the force exerted for the content of the container, and the flexibility of the material of the packaging) to the extent that the overall shape is still evident and the general plane of each wall is inclined with respect to the plane general of each of the other walls.

The edges of the polyhedron can be shaped with an increased angle, for example, by arranging one or more seals during shaping, so that one or more seals are oriented along one or more respective parts of the edges of the polyhedron to provide more distinct edges.

Laundry composition Layers

The casting compositions within the scope of the invention are liquid compositions comprising at least two layers, of which at least one layer is hydrophilic and at least one layer It is hydrophobic. The hydrophobic layer is normal and preferably the layer higher.

The hydrophilic layer uses water, usually in a amount from 0 to 60%, preferably from 5 to 50%, the most preferably from 10 to 40% by weight of the hydrophilic layer.

The hydrophobic layer employs a hydrophobic liquid, usually in an amount of 30 to 100%, preferably 40 to 80%, most preferably 50 to 70% by weight of the hydrophobic layer. The hydrophobic fluid is generally selected from the group consisting of paraffin, wax, oil, petrolatum, a hydrophobic polymer and mixtures thereof. A natural or synthetic hydrocarbon oil or mixtures thereof can be used. Generally, the hydrocarbon oil may be a paraffinic oil, a naphthenic oil, a natural mineral oil or the like. Examples include, but are not limited to, mineral oil, castor oil, vegetable oil, corn oil, peanut oil, jojoba oil, 2-ethylhexyl oxiestearate (and other alkyl oxystearates), acetylated lanolin alcohol, palmitates alkyl such as isopropyl palmitate, 2-ethylhexyl palmitate, glycerol triacetates, diisopropyl adipate, dioctyl adipate (and other alkyl adipates), isorpopyl myristate, C 12 to C 15 alcohol benzoates and the like. Most preferably, the oil is mineral oil, because it is economical and the most easily
tractable.

The hydrophobic fluid can be used in combination with a hydrophobic advantageous agent and / or a dye (for example, an oil-soluble dye), or it can form a phase It continues to surround a discontinuous phase. The discontinuous phase can be itself an advantageous agent and / or a dye or it may contain a advantageous agent and / or additional dye.

Preferably, at least one layer is transparent / translucent. Preferably, at least one layer is colored. Preferred compositions comprise two layers, in which the top layer contains most, preferably all, of the sensitive advantageous ingredient, and the lower layer contains the most, preferably all, of the surfactant.

When agitated, the layers in the composition They can coalesce. However, they are separated into visible layers, in which each layer regains its clarity (if transparent) after being in rest for a maximum of 24 hours at 20 ° C.

The volume ratio of the two layers in the Final composition is generally in the range of 1:99 to 99: 1. In the preferred compositions, the bottom layer is aqueous and is predominant, that is, the volume ratio of the layer below the top layer is at least 60:40, more preferably at least 70:30, most preferably at least 80:20, in order to provide the most pleasant appearance, optimal advantages of cleanliness and optimal protection for the hydrophobic layer and ingredients contained in it. The resulting layers have volume relations at the same intervals as described above (but the relationship of layers may not be same as the ratio of starting components).

It should be noted that in the final composition, the compositions of the resulting layers do not correspond necessarily with the compositions of the respective layers before if combined in the form of a single composition. This is because the reaction between ingredients, in particular the ingredients acids and basic ingredients (for example, sodium hydroxide) and also due to the possible displacement of the material between the two layers, or the emulsification of some of the layers in each of the others.

Some of the preferred embodiments of the laundry products are listed below:

No. Hydrophilic layer (Lower) Interval Hydrophobic layer (top) Interval Relationship in Ingredients % in weigh of the phase % in weigh layer volume of the phase of the phase less than higher one Water 0-60 Petrolatum 45-80 From 99: 1 Propylene glycol 0-25 Perborate of sodium 5-20 to 60:40 Xylene 0-15 4-Nonanoyloxybenzene- 5-20 Ethoxylate of alcohol- 0-95 sulfonate of sodium sulphonate Alkylbenzenesulfonate 0-75 from sodium Ethoxylate sulfate from sodium 0-80 from alcohol Miscellaneous 0-10 2 Water 0-60 Oil mineral 40-80 From 99: 1 Monoethanolamine 0-30 Kraton G1650M 0.5-10 to 60:40 Propylene glycol 0-25 Lipase 0.5-5 Ethoxylate from alcohol 1-95 Alkylbenzenesulfonate 1-80 from monoethanolamine Protease 0-5 Miscellaneous 0-10 3 Water 0-65 Oil mineral 40-80 From 99: 1 Lauryl sulfate ammonium 1-20 Wax paraffin 5-30 to 60:40 Monoethanol-Amine- 1-20 Surfactant cationic 1-10 cocamida Chloride from ammonium 0.1-10 Miscellaneous 1-10

Preferred ingredients of the laundry composition Surfactant

The compositions of the invention contain preferably one or more surface activity agents (surfactants) selected from the group consisting of anionic, nonionic, cationic, amphoteric and hybrid ions or mixtures thereof. Surfactant detergents Preferred to be used in the present invention are mixtures of anionic and nonionic surfactants, although it should be understood that any surfactant can be used alone or in combination with any other surfactant or surfactants. The surfactant must comprise at least 5%, for example, 5% to 80%, preferably at less 10% to 80%, more preferably 15% to 40%; even more preferably 1% to 35% of the composition. Preferably, the predominant part or all of the surfactant, for example, at less 80% of all surfactant in the composition, more preferably at least 90%, it is contained in the layer hydrophilic

Nonionic Surfactant

The detergents are described below. nonionic synthetic organics that can be used in the invention, alone or in combination with other surfactants. The Nonionic surfactants are typically included.

Preferred non-ionic surfactants are nonionic surfactants that are pourable liquids, gels or pastes at 25 ° C. Nonionic detergent surfactants normally have molecular weights from about 300 to about 11,000. Mixtures of different surfactants can also be used non-ionic detergents, provided that the mixture is a gel liquid or paste at 25 ° C. Optionally, the composition can comprise one or more nonionic surfactants that are solid at 25 ° C These dissolve and / or disperse in either or both liquid layers

As is well known, non-ionic detergents they are characterized by the presence of an organic hydrophobic group and a organic hydrophilic group and are normally produced by the condensation of an organic aliphatic hydrophobic compound or alkyl aromatic with ethylene oxide (of nature hydrophilic). Normal suitable non-ionic surfactants are those described in US Pat. No. 4,316,812 and 3,630,929 and in the European applicant's published specification EP-A-225,654.

Usually, non-ionic detergents are polyalkoxylated lipophilic in which the balance desired hydrophilic-lipophilic is obtained from the addition of a hydrophilic polyalkoxy group to a lipophilic moiety. A preferred class of non-ionic detergent is that of the alkanols alkoxylates in which the alkanol is 9 to 18 carbon atoms and in which the number of moles of alkylene oxide (of 2 or 3 atoms carbon) is 3 to 12. Of these materials, it is preferred to use those in which alkanol is a fatty alcohol from 9 to 11 or 12 to 15 carbon atoms and containing 5 to 8 or 5 to 9 alkoxy groups per mole

Examples of these compounds are those in the that the alkanol is 12 to 15 carbon atoms and that contain 7 ethylene oxide groups per mole, for example, Neodol® 12®-6.5, products that are prepared by the Shell Chemical Company, Inc. The first is a condensation product of a mixture of higher fatty alcohols with an average of about 12 to 15 carbon atoms, with 7 moles of ethylene oxide and the last one is a corresponding mixture in which the content of atoms of Carbon of the higher fatty alcohol is 12 to 13 and the number of groups Ethylene oxide present is an average of 6.5. Alcohols Higher are mainly alkanols.

Other useful non-ionic products are represented by the commercially well-known class of products Non-ionic traded under the registered trademark Plurafac®. The Plurafac® are the reaction products of a linear alcohol top and a mixture of ethylene and propylene oxides, which contain a mixed chain of ethylene oxide and oxide of propylene, terminated with a hydroxyl group. Examples include a C 13 -C 15 fatty alcohol condensed with 6 moles of ethylene oxide and 3 moles of propylene oxide, alcohol C 13 -C 15 fat condensed with 7 moles of propylene oxide and 4 moles of ethylene oxide, fatty alcohol of C 13 -C 15 condensed with 5 moles of oxide propylene and 10 moles of ethylene oxide, or mixtures of any of the above.

Another group of liquid non-ionic products are commercially available from Shell Chemical Company, Inc. under the trademark Dobanol® 91-5 which is a C 9 -C 11 fatty alcohol with a average of 5 moles of ethylene oxide and Dobanol® 23-7 it is a C 12 -C 13 ethoxylated fatty alcohol with an average of 7 moles of ethylene oxide per mole of alcohol fatty.

In the compositions of this invention, Preferred non-ionic surfactants include fatty alcohols C_ {12} -C_ {15} primaries with contents relatively narrow ethylene oxide in the range of 7 to 9 moles, and the C 9 -C 11 fatty alcohols ethoxylated with 5-6 moles of ethylene oxide.

Another class of non-ionic surfactants that can to be used in accordance with this invention are surfactants of glycosides The glycoside surfactants suitable to be used in accordance with the present invention include those of formula:

RO --- R'O_ {y} --- (Z) x

in which R is an organic radical monovalent containing from about 6 to about 30 (preferably from about 8 to about 18) atoms carbon; R 'is a divalent hydrocarbon radical that contains from about 2 to 4 carbon atoms; Or is an atom of oxygen; and is a number that can have an average value of 0 to about 12 but that is most preferably zero; Z is a residue derived from a reducing saccharide containing 5 or 6 atoms of carbon; y x is a number that has an average value of 1 to 10 (preferably 1.5 to 10).

A particularly preferred group of glycoside surfactants to be used in the practice of this invention includes those of the above formula in which R is a monovalent organic radical (linear or branched) containing about 6 to about 18 (especially of about 8 to about 18) carbon atoms; And it is zero; Z is glucose or a residue derived therefrom; x is a number which has an average value of 1 to about 4 (preferably from about 1 to 4).

Surfactants particularly useful for This application includes, but is not limited to: ethoxylates of alcohols (for example, the company's Neodol® 25-9 Shell Chemical Co.), alkyl phenol ethoxylates (by example, Tergitol® NO-9 from Union Carbide Corp.), alkyl polyglycosides (for example Glucappon® 600CS of the Henkel Corp. company), polyoxyethylene polyoxypropylene glycols (for example, Pluronic® L-65 from BASF Corp.), sorbitol esters (for example, Emsorb® 2515 from the company Henkel Corp.), polyoxyethylene sorbitol esters (for example, Emsorb® 6900 from Henkel Corp.), alkanolamides (for example, company Alkamide® DC212 / SE Rhone-Poulenc Co.) and N-alkyl pyrrolidones (for example, Surfadone® LP-100 from ISP Technologies Inc.).

Mixtures of two or more of the nonionic surfactants.

Anionic surfactant

Anionic surfactants that can to be used in the present invention are those compounds surfactants containing a hydrocarbon hydrocarbon group of long chain in its molecular structure and a hydrophilic group, is that is, a water solubilizing group such as a sulfonate group, sulfate or carboxylate. Anionic surfactants include alkali metals (for example, sodium and potassium), alkyl benzene sulphonates, alkyl sulphonates, alkyl sulfates and soluble alkyl polyether sulfates in Water. They can also include fatty acids or acid soaps fatty Preferred anionic surfactants are salts of alkali metals, ammonium or alkanolamides and higher alkyl benzene sulphonates and the alkali metal, ammonium or alkanolamide salts of higher alkyl sulphonates. The Preferred higher alkyl sulphonates are those in which the alkyl groups contain 8 to 26 carbon atoms, preferably 12 to 22 carbon atoms and more preferably 14 to 18 carbon atoms The alkyl group in the alkyl benzenesulfonate preferably contains 8 at 16 carbon atoms and more preferably 10 to 15 atoms of carbon. A alkyl benzene sulfonate particularly preferred is the sodium dodecyl benzene sulphonate or potassium, for example, dodecil linear benzene sulphonate sodium.

The primary alkyl sulphonates and Side effects can be prepared by reacting long chain alpha-olefins with sulphites or bisulfites, for example, sodium bisulfite. The alkyl sulphonates can also be prepared reacting normal chain paraffin hydrocarbons long with sulfur dioxide and oxygen as described in the US patents No. 2,503,280, 2,507,088, 3,372,188 and 3,260741 to obtain higher alkyl sulphonates normal or secondary suitable for use as detergents surfactants

The alkyl substituent is preferably linear, that is, normal alkyl, however, they can be used branched chain alkyl sulphonates, although not They are so good about biodegradability. The alkane is that is, the alkyl substituent may be terminally sulfonated or may be attached, for example, to the carbon atom of the chain, that is, it can be a secondary sulfonate. Should It is understood in the art that the substituent may be attached to any carbon atom in the alkyl chain. The higher alkyl sulphonates can be used as alkali metal salts, such as sodium and potassium. Salts Preferred are sodium salts. The Preferred alkyl sulphonates are (normal alkyl) from C 10 to C 18) - sodium sulphonates and potassium, of which salts of (normal alkyl) are more preferred C 10 to C 15) primary sulphonates.

Mixtures of higher alkyl benzene sulphonates and higher alkyl sulphonates as well as mixtures of higher alkyl benzene sulphonates and rent superior-polyether sulfates.

Alkyl sulfates can also be used. normal and branched chain alkyl (for example, primary alkyl sulfates) as the component anionic

The (rent top) -polyter sulfates used according to the present invention they can be chain alkyl normal or branched and contain lower alkoxy groups containing Two or three carbon atoms. The (upper alkyl normal) -polyether sulfates are preferred because they have a degree of biodegradability more elevated than branched chain alkyl groups, and groups Lower polyalkoxy are preferably ethoxy groups.

The (rent lower) -polyethoxy sulfates Preferred used in accordance with the present invention are represented by the formula:

R '--- O (CH 2 CH 2 O) p --- SO 3 M,

wherein R 'is C 8 alkyl to C 20, preferably C 10 to C 18 and more preferably C 12 to C 15; p is 2 to 8, preferably 2 to 6 and more preferably 2 to 4; and M is an alkali metal, such as sodium or potassium, or an ammonium cation. Sodium salts and potassium.

A (higher alkyl) sulfate Preferred polyethoxylated is the sodium salt of a sulfate of triethoxy-C 12 to C 15 alcohol having the formula:

C_12-15 --- O --- (CH2CH2O) 3 --- SO3 Na

Examples of suitable alkyl ethoxy sulfates that they can be used according to the present invention are salt of sodium of (normal or primary alkyl C 12-15) - triethoxy sulfate; sodium salt of n-decyl diethoxy sulfate; ammonium salt of (primary alkyl C 12) - diethoxy sulfate; Get ouf of sodium of (primary alkyl C 12) - triethoxy sulfate; Get ouf of sodium of (primary alkyl C 15) -tetraethoxy sulfate; Get ouf of sodium of (C 14-15 normal primary alkyl) mixed) - (tri- and tetra-ethoxy mixed) -sulfate; sodium salt of stearyl-pentaethoxy sulfate; and salt potassium (C 10-18 normal primary alkyl) mixed) -triethoxy sulfate.

The (rent normal) -ethoxy sulfates are easily biodegradable and are preferred. The alkyl poly (alkoxy lower) -sulfates can be used in mixtures of with each other and / or mixtures with the alkyl benzene- and higher alkyl sulphonates or alkyl sulfates discussed above.

The (alkyl top) - metal polyethoxy sulfate alkaline can be used with the alkyl benzene sulfate and / or with a alkyl sulfonate or sulfonate, in an amount of 0 to 70%, preferably 10 to 50% and, more preferably, 10 to 20% in weight of the entire composition.

Anionic surfactants particularly Useful for this application include, but are not limited to: (linear alkyl) benzene sulphonates (for example, Vista® C-500 from Vista Chemical Col.), alkyl sulfates (for example, Polystep® B-5 from Stepan Co.), polyoxyethylene alkyl sulfates (for example, Standapol® ES-3 from Stepan Col.), alpha-olefin sulfonates (for example, Witconate® AOS from Witco Corp.), esters alpha-sulfo-methyl (for example, AlphaStep® MC-48 from Stepan Co.), alkyl ether sulfates and -isethionates (for example, Jordapon® C1 from PPG Industries Inc.).

The anionic surfactants can be added pre-neutralized or, preferably, they can be formed in situ , neutralizing a precursor acid (fatty acid in the case of soaps). Additionally, the anionic precursor or fatty acid must be over-neutralized (ie, there must be an excess of the alkaline material used to form the counterion). The inorganic salt, preferably the sodium or potassium salt of the anionic precursor acid, is preferred to improve detergency, but the organic salt results in an improved transparency.

Cationic surfactants

Many cationic surfactants are known in the technique, and almost any cationic surfactant that has the minus a long chain alkyl group of about 10 to 24 Carbon atoms is suitable in the present invention. These Compounds are described in the publication "Cationic Surfactants ", Jungermann, 1970, incorporated as a reference to the Present descriptive report.

The specific cationic surfactants that they can be used as surfactants in the present invention are described in detail in US Pat. No. 4,497,718, incorporated as reference to the present specification.

As with non-ionic surfactants and anionic, the compositions of the invention can use cationic surfactants alone or in combination with any of the other surfactants known in the art. Naturally the compositions may not contain any cationic surfactants in absolute.

Amphoteric surfactants

Amphoteric synthetic detergents can be widely described as coming from aliphatic compounds or aliphatic derivatives of secondary heterocyclic amines and tertiary in which the aliphatic radical can be chain linear or branched and in which one of the aliphatic substituents it contains 8 to 18 carbon atoms and at least one contains a water-solubilizing anionic group, for example, carboxylate, sulphonate or sulfate. Examples of compounds that fall within This definition is sodium 3- (dodecylamino) propionate, 3- (dodecylamino) propane-1-sulfonate of sodium, 2- (dodecylamino) -ethyl sulfate sodium, sodium 2- (dimethylamino) octadecanoate, 3- (N-carboxymethyldodecylamino) propane-1-sulfonate of disodium, disodium octadecyl iminodiacetate, 1-carboxymethyl-2-undecylimidazole of sodium and N, N-bis (2-hydroxyethyl) -2-sulfate-3-dodecoxypropylamine of sodium. The 3- (dodecylamino) propane-1-sulfonate of sodium.

Hybrid ion surfactants can be widely described as derivatives of secondary amines and tertiary, derivatives of secondary heterocyclic amines and tertiary, or derivatives of quaternary ammonium compounds, quaternary phosphonium or tertiary sulfonium. The cationic atom in the Quaternary compound may be part of a heterocyclic ring. In all these compounds, there is at least one aliphatic, chain group linear or branched, containing approximately 3 to 18 atoms of carbon and at least one aliphatic substituent containing a anionic group sulubilizing in water, for example, carboxy, sulphonate, sulfate, phosphate or phosphonate.

Specific examples of ionic surfactants Hybrids that can be used are set forth in US Pat. nº 4,062,647, incorporated by reference herein descriptive

Preferably, the surfactant in the laundry compositions of the invention is an anionic and / or non-ionic compound, especially (linear alkyl) benzene sulphonate, alkyl ether sulfate, alcohol ethoxylates and mixtures thereof.
clas.

For formulations with higher foaming (top-loading washing machines), are especially preferred mixtures of anionic and non-ionic surfactants, for optimal suppression of grease and dirt spots in the form of particles. When mixtures are used, the most effective mixtures employ a anionic to nonionic ratio of 10: 1 to 1:10, preferably of 5: 1 to 1: 5, most preferably 3: 1 to 1: 3.

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When low formation formulations are desired foam, for example, for front-loading washing machines, se employ non-ionic surfactants, in the absence or with levels lower anionic surfactants, alone or in combination with cationic surfactants and / or defoamers.

Third layer optional

The laundry compositions may include a third layer A surfactant layer may contain components polar and non-polar and therefore can be separated into two layers. However, the third layer can generally be created by adding an electrolyte to the aqueous layer, containing the amount predominantly surfactant. The electrolyte can be added also in order to increase the water content of the casting compositions, without compromising the integrity of the package soluble in water.

Electrolyte

The electrolyte that can be included in the compositions of the invention is selected from the group of organic electrolytes, inorganic electrolytes and mixtures thereof.

Preferably, electrolytes suitable for be used in the present invention meet both criteria following:

(1) have a high separation capacity saline;

(2) are able to reduce activity watery

The "colored inorganic electrolyte" contains a transition metal cation, in the form of electrolytes (salts) containing these cations will produce a second colored aqueous solution. Suitable cations include, but they are not limited to, cobalt, copper (cuprous and cupric), chrome, nickel, iron (ferric and ferrous), zinc, manganese, vanadium (vanadyl), palladium and cadmium.

Suitable anions include, but are not limited to, sulfate, nitrate, fluoride, chloride, bromide, iodide, acetate, tartrate, ammonium tartrate, benzenesulfonate, benzoate, bicarbonate, carbonate, bisulfate, bisulfite, sulfate, sulphite, borate, borotartrate, bromate, butyrate, chlorate, canforate, chlorite, cinnamate, citrate, disilicate, dithionate, ethyl sulfate, ferricyanide, ferrocyanide, fluorosilicate, formate, Glycerophosphate, hydrogen phosphate, hydroxostannate, hypochlorite, Hyponitrite, hypophosphite, iodate, isobutyrate, lactate, laurate, metaborate, metasilicate, methionate, methylsulfate, nitrite, oleate, orthophosphate, orthophosphite, orthosilicate, oxalate, perborate, perchlorate, phosphate, polyfluoride, polychloride, polyiodide, polybromide, polysulfide, polysulfate, polysulfite, salicylate, silicate, sorbate, stannate, stearate, succinate or valerate, dichromate, chromate, nitrate, troyonate, permanganate, bromide, chloride, fluoride, gluconate, phenolsulfate or selenate.

The use of colored inorganic electrolyte gives place to formulations containing an electrolyte layer colored, in which the color does not fade in the layer of surfactant

In addition to this, it is possible to have formulations stable multi-colored, with electrolyte inorganic colored in the electrolyte layer, and a dye organic in the surfactant layer.

Suitable colored electrolytes include, but are not limited to the following:

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Compound Color Sulfate nickel Green Sulfate cupric blue Dichromate potassium Orange-red Chromate ammonium Yellow Ammonium sulphate chrome Purple-red Sulfate tetraamine copper blue Ammonium sulphate iron Pale violet Chromate Sulfate potassium Purple-red Sulfate iron Light yellow Sulfate ferrous Brown-green Sulfate cobalt Red pink Sulfate potassium cobalt Purple Sulfate manganese Red pink Sulfate of vanadilo blue

(Continuation)

Compound Color Nitrate manganese Pinkish Ammonium citrate iron Brown Green Nitrate iron Purple-white Sulfate iron Yellowish Troyonato cobalt Blue green Merbromine Red Permanganate from zinc Violet-brown Sulfate from ammonium-nickel Blue green Acetate nickel Green Bromide nickel Yellow green Chloride nickel Green Fluoride nickel Yellow green Tetracyanniquelate potassium Orange Ammonium chloride cupric Yellow Acetate cupric Green Chloride cupric Blue green Formate cupric Pale blue Gluconate cupric Light Blue Glycinate cupric Light Blue Nitrate cupric Pale green Perchlorite cupric Pale green Phenolsulfate cupric Blue green Salicylate cupric Blue green Selenium cupric Green Blue Tartrate cupric Green Dark Cuproxoline Brown Chloride palladium Brown Sulfide cadmium Yellow orange

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Mixtures of electrolytes can be used.

The electrolyte can be previously formed or formed in situ .

Preferred electrolytes are selected between the group consisting of nickel, cupric and cobalt salts of sulfate and chloride, because these give rise to more colors Nice for a laundry detergent.

"Organic electrolyte", as used in the Present specification means an electrolyte that contains An organic cation. "Organic cation", in turn, means a non-metallic ionic entity with positive charge. The cations Suitable organic include, but are not limited to, ammonium, ammonium hydroxide, amines, more preferably alkanolamines (by example, monoethanolamine, diethanolamine, triethanolamine or isopropylamine). Preferred organic electrolytes are select from the group consisting of monoethanolamine, triethanolamine and ammonium oxide salts of citrate, carbonate, bicarbonate, borate and sulfate. Monoethanolamine salt is the most effective. Monoethanolamine Citrate, Monoethanolamine Carbonate and monoethanolamine borate are the most preferred, due to their ability to function also as detergency builders and / or buffering agents in the detergent composition. Citrate monoethanolamine is optimal, due to its optimal capacity for saline separation of a surfactant and / or reduce activity watery

"Inorganic electrolyte", as used in the Present specification means an electrolyte that contains an alkali or alkaline earth metal cation. The suitable additional inorganic electrolytes include, but not are limited to sodium, potassium, lithium, magnesium and calcium. Preferred electrolytes are selected from the group consisting of sodium and potassium salts of citrate, carbonate, bicarbonate, borate and sulfate. Sodium salt is the most economical. Sodium citrate, sodium carbonate and sodium borate are the more preferred, due to its ability to function also as detergency builders and / or buffering agents in the detergent composition Sodium citrate is optimal, due to its optimum capacity for the saline separation of a surfactant and / or reduce water activity.

Suitable anions for the inorganic electrolyte and the organic electrolyte are selected from the list an-
interior.

When the third layer is desired, the liquid detergent composition of the invention preferably includes from 1 to 50%, more preferably from 5 to 40%, most preferably from 5 to 35% and optimally from 10 to 30% of the electrolyte, with the in order to achieve a stable composition of three layers, at an optimal cost. When mixtures of the colored inorganic electrolyte with additional inorganic or organic electrolytes are used, the amount of the colored inorganic electrolyte is in the range of 0.001 to 10%, preferably 0.01 to 5%, more preferably 0.05 to 5%, optimally from 0.5 to 3%. The concentration of electrolyte to create the three layer composition depends on the concentration of surfactant, the amount of water and the identity of the electrolyte. The necessary concentration can be predicted by calculating the ionic resistance of the electrolyte at a particular concentration. It has been found as a part of the present invention that preferred electrolytes and preferred concentrations are those having a calculated ionic strength of at least 4.2, preferably at least 4.4, most preferably at
minus 5.

The ionic resistance represents the ion interactions with water molecules and other ions in the solution. Ionic resistance can be calculated as follows:

I = ½ \ sum z_ {i} {} 2} m_ {i}

\ sum = summation for a number i of ions

I = ionic resistance

z = valence factor

m = molal concentration of the ith ion

Hydrotrope

A particularly preferred optional ingredient It is a hydrotrope, which prevents the formation of liquid crystals. By Thus, the addition of the hydrotrope helps clarity / transparency of the composition. The hydrotrope is normally included in the surfactant layer. Suitable hydrotropes include, but are not limited to, propylene glycol, ethanol, urea, salts of benzene sulfonate, toluene sulphonate, xylene sulphonate or cumene sulfonate. Suitable salts include, but they are not limited to those of sodium, potassium, ammonium, monoethanolamine or triethanolamine. Preferably, the hydrotrope is selected from the group consisting of propylene glycol, xylene sulphonate, ethanol and urea to provide a optimal performance The amount of hydrotrope is usually in the range of 0 to 30%, preferably 0.5 to 20%, the most preferably from 1 to 15%.

Protected ingredient in the top layer

The top layer is preferably hydrophobic. He ingredient that you want to protect (for example, ingredient advantageous or a dye) can form a continuous phase with the hydrophobic ingredient (can then be melted together with hydrophobic material) or may form a discontinuous phase (hydrophilic or hydrophobic incompatible). In the latter case, the hydrophobic material forms a continuous phase, which surrounds a phase discontinuous It is also possible a hybrid of the two cases, it is that is, both continuous and discontinuous phases contain advantageous ingredient (s) and / or dye (s).

If present, the discontinuous phase of the layer hydrophobic is itself and / or comprises an advantageous agent and / or a Colorant. In some embodiments of the invention, the phase discontinuous is itself an advantageous agent, for example, a vegetable oil such as sunflower seed oil, in compositions for personal care In other embodiments, the phase discontinuous is itself a dye (for example, a pigment solid). Still, in other embodiments, the discontinuous phase serves as a vehicle for an advantageous and / or coloring agent. And yet In other embodiments of the invention, the discontinuous phase may be itself an advantageous and / or coloring agent and may include also additionally an advantageous agent and / or additional dye. According to the present invention, the discontinuous phase is immiscible with the continuous phase, to avoid exposure of the continuous phase to the environment outside the capsule. The discontinuous phase can be a solution (aqueous or oily), an oil, an emulsion, a dispersion or a solid. The preferred form of the discontinuous phase is an oil or a solution (oily or aqueous solution), due to the relative ease of incorporation of the oil or solution into the continuous phase The layer can include more than one phase discontinuous

If the additional advantageous agent / dye is soluble in oils, then an oil is chosen to carry the advantageous / coloring agent in the discontinuous phase; if the agent advantageous / dye is water soluble, then the discontinuous phase It is an aqueous solution. Naturally as mentioned previously, they can be solid employees, without making a solution.

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The discontinuous phase may be present in a amount of 0.01 to 45%, more preferably 5 to 45%, most preferably from 10 to 40% and optimally from 20 to 35% (% by volume of the hydrophobic layer) in order to supply enough agent advantageous / coloring, provide adequate protection for the advantageous / coloring agent and to maintain the ease of treatment.

For a hydrophobic layer that contains a phase discontinuous, the continuous phase can sometimes be referred to as successive as "bark" or "bark material".

For simplicity, the trapped material inside the cortex, either directly or in the form of a phase discontinuous, it will be called an "enzyme." However, it is within the scope of this description that materials other than enzymes can be encapsulated by techniques described herein. The agent's choice advantageous depends largely on whether the final composition for the consumer is a detergent composition a composition for the personal care. As mentioned earlier, the phase continues or discontinuous may itself represent an advantageous agent, by what is not necessary for an advantageous agent to be present additional. Therefore, an advantageous agent may be present. additional in an amount of 0 to 100%, preferably 0.01 to 50%, more preferably 0.1 to 20% by weight of the discontinuous phase.

Normal advantageous agents include, but not are limited to a bleach, a bleach precursor, a surfactant, an enzyme, a bleaching agent, a fabric softener fabrics, an anti-wrinkle compound, a fixative of dyes, dye transfer inhibitors, polymers anti-redeposition, suppressor polymers of the dirt, an anti-foaming agent, a perfume, a silicone oil, a vegetable oil and its mixtures.

Enzymes

Enzymes that can be used herein Invention are described in more detail below. The enzyme is normally included in an amount of 0.05 to 5%, preferably 0.05 to 3%. The enzyme is preferably contained in a predominantly in the upper layer, which is preferably hydrophobic, with the lower to upper layer volume ratio of at least 90:10, preferably 95: 5. Therefore, generally, at least one 90%, preferably at least 90% of the enzyme is in the layer higher.

If a lipase is used, the lipolytic enzyme may be a fungal lipase produced by Humicola lanuginosa and Thermomyces lanuginosus , or a bacterial lipase that shows a positive immunological cross reaction with the lipase antibody produced by the microorganism Chromobacter viscosum var. lipolyticum NRRL B-3673. This microorganism has been described in the specification of Dutch patent 154,269 of Toyo Jozo Kabushiki Kaisha and has been deposited in the Fermentation Research Institut, Agency of Industrial Science and Technology, Ministry of International Trade and Industry, Tokyo, Japan, and added to the permanent collection under No. KO Hatsu Ken Kin Ki 137 and is available to the public at the United States Department of Agriculture, Agricultural Research Service, Northern Utilization and Development Division in Peoria, Ill., USA, under the NRRL number B-3673. Lipase produced by this microorganism is commercially available from Toyo Jozo Co., Tagata, Japan, hereinafter referred to as "Lipasa TJ". These bacterial lipases must show a positive immunological cross-reaction with the TJ lipase antibody, using the standard and well-known immune diffusion procedure according to the Ouchterlony publication (Acta. Med. Scan., 133 pages
76-79 (1930).

The preparation of the antiserum is carried out as follow:

Equal volumes of 0.1 mg / ml of Freund's antigen and adjuvant (complete or incomplete) until it is Get an emulsion. Two female rabbits are injected 45 with 2 ml samples of the emulsion according to the following scheme:

day 0: antigen in complete Freund's adjuvant

day 4: antigen in complete Freund's adjuvant

day 32: antigen in incomplete Freund's adjuvant

day 64: incomplete Freund's adjuvant antigen enhancer.

The serum containing the required antibody is prepared by centrifugation of coagulated blood, taken in the Day 67

The title of the antiserum anti-TJ-lipase is determined by inspecting the precipitation of serial dilutions of antigen and antiserum according to the Ouchteriony procedure. A dilution of antiserum was the dilution that still provided a visible precipitation with an antigen concentration of 0.1 mg / ml

All bacterial lipases that show a positive immunological cross reaction with the TJ-lipase antibody, as described above, are suitable lipases in this embodiment of the invention. Typical examples thereof are Pseudomonas fluorescens IAM 1057 lipase (available from Amano Pharmaceutical Co., Nagoya, Japan, under the trademark Amano-P lipase), Pseudomonas fragi FERM P 1339 lipase (available under the brand Registered Amano B), Pseudomonas nitroreducens var. lipolyticum FERM 1338, the lipase of Pseudomonas sp. (available under the trademark Amano CES), Pseudomonas capacia lipase, Chromobacter viscosum lipase, for example, Chromobacter viscosum var. NRRL B-3673 lipolyticum , commercially available from Toyo Jozo Co., Tagata, Japan; and additional Chromobacter viscosum lipases from the US company. Biochemical Corp. USA and Diosynth Co. Holland and Pseudomonas lipases
Gladioli

An example of fungal lipase as described above is Humicola lanuginosa lipase available from Amano under the trademark Amano CE; Humicola lanuginosa lipase as described in the aforementioned European patent application 0.258.068 (NOVO), as well as the lipase obtained by cloning the Humicola gene and expressing this gene in Aspergillus oryzae , commercially available from NOVO Industri A / S under the registered trademark "Lipolase". This lipolase is a preferred lipase for use in the present invention.

Although various enzymes have been described specific lipases above, it should be understood that it can be used any lipase that can confer lipolytic activity desired to the composition, and the invention is not expected to be limited in any way by the specific choice of enzyme lipase

The lipases of this embodiment of the invention are included in the liquid detergent composition in an amount such that the final composition has an enzyme activity lipolytic from 100 to 0.005 LU / ml in the wash cycle, preferably 25 to 0.05 LU / ml when the formulation is dosed at a level of about 0.1-10, more preferably 0.5-7, most preferably 1-2 g / liter

A unit of lipase (LU) is the amount of lipase that produces 1 mmol of titratable fatty acid per minute in a pH state under the following conditions: temperature 30 ° C; pH = 9.0; The substrate is an emulsion of 3.3% by weight of olive and 3.3% gum arabic, in the presence of 13 mmol / l of Ca 2+ and 20 mmol / l of NaCl in 5 mmol / l of Tris buffer.

Naturally, mixtures of the previous lipases. Lipases can be used in their non-form purified or in a purified form, for example, purified by means of well-known absorption methods, such as absorption with phenyl sepharose.

If a protease is used, the proteolytic enzyme It can be of plant, animal or microorganism origin. Preferably, it is of the latter origin, which includes yeasts, fungi, molds and bacteria.

Particularly preferred are bacterial proteases of the subtilisin type, obtained, for example, from particular strains of B. subtilis and B. licheniformis . Examples of suitable commercially available proteases are Alcalasa, Savinase, Esperasa, all from NOVO Industri A / S; maxatasa and Maxacal de Gist-Brocades; Showa Denko Kazusasa; BPN and BPN 'proteases, etc. The amount of proteolytic enzyme included in the composition varies in the range of 0.05-50,000 GU / mg, preferably 0.1 to 50 GU / mg, based on the final composition. Naturally, mixtures of different proteolytic enzymes can be used.

Although they have been described previously diverse specific enzymes, it should be understood that any protease that confers the desired proteolytic activity to the composition, and this embodiment of the invention is not limited in in any way regarding the specific choice of enzyme proteolytic

In addition to lipases or proteases, it should be understood which can also be used in the composition of the present invention other enzymes such as cellulases, oxidases, amylases, peroxidases and the like, as is well known in the art. The enzymes can be used together with necessary joint factors to favor enzymatic activity, that is, they can be used in enzyme systems, if necessary. It should also be understood that enzymes that have mutations in various positions (for example, enzymes treated by genetic engineering to increase the performance and / or stability) are also contemplated by the invention. An example of an enzyme treated by genetic engineering Commercially available is Durazym from Novo.

In the case of an enzyme, the discontinuous phase is an aqueous solution of the enzyme. The aqueous enzyme solution can optionally contain an HLB surfactant (balance hydrophilic-lipophilic) low, in order to increase additionally the formation of the emulsion. The surfactant level it can be reduced or even eliminated, particularly if used adequate agitation In addition to that, the need for a surfactant is completely removed if the bark material it is a mixture of thermoplastic polymer with oil, instead of a wax / oil mixture.

Colorant

The dye can be a dye or a pigment. Dyes are preferable, since they are soluble in water and therefore are more easily incorporated into the emulsion of the layer, compared to pigments that are not normally water soluble Most preferably, a dye soluble in water is trapped, alone or in the mixture with an advantageous agent, in a colorless and transparent continuous phase.

Most preferably, the layer is an emulsion or dispersion containing both the advantageous agent and the dye, within a transparent continuous phase, to provide a visual indication to the consumer that a composition contains a additional advantageous ingredient.

The emulsion / dispersion can be prepared by any known method, but preferably the emulsion or dispersion is prepared by mixing the continuous phases and discontinuous, in which the latter is or contains the ingredient that goes to be encapsulated, for example, the bleaching solution or an oil vegetable. In the preferred embodiment, the copolymer is molten, mixed with oil and then the discontinuous phase is added, with stirring, to ensure uniform mixing of the ingredients. The resulting emulsion / dispersion is maintained. preferably at a temperature in the range of 40 ° C to 95 ° C. The more preferably, the use of direct heat is avoided. A temperature range that is most preferred is 60 ° C at 75 ° C

Layers Position

The position of the hydrophobic layer is defined by the relative densities of the layers. The most liquid detergents have a density of 1 or slightly below or above, is that is, in the range of 0.9-1.1 g / l. The Enzyme emulsions normally have a density less than of a liquid detergent composition. In this case, the density of The enzyme capsule / emulsion is less than 1, as a result of the density of the hydrophobic ingredient that varies in the range of 0.8 to 0.9 g / l. Therefore, the hydrophobic layer will normally float to the top, as preferred according to the present invention, to minimize the interfacial surface between the ingredient that will be protected in the hydrophobic layer and the layer watery

The preferred casting composition may include additionally one or more well known laundry detergents, such as detergency builders (0.1 to 20%, agents anti-redeposition, fluorescent dyes, perfumes, dirt suppressor polymers, dye, enzymes, agents buffers, antifoaming agents, UV absorber, etc.

Examples of detergency builders suitable inorganic alkalines that can be used are phosphates of water-soluble alkali metals, polyphosphates, borates, silicates and also carbonates. Specific examples of these salts they are triphosphates, pyrophosphates, orthophosphates, hexametaphosphates, sodium and potassium tetraborates, silicates and carbonates.

Examples of organic alkaline enhancing salts Suitable detergency are: (1) water-soluble amino polycarboxylates, by example, sodium and potassium ethylenediaminetetraacetates, nitrilotriacetates and N- (2-hydroxyethyl) -nitrilodiacetacetatos; (2) water soluble salts of phytic acid, for example, phytates of sodium and potassium (see U.S. Patent No. 2,379,942); (3) water soluble polyphosphonates, specifically including salts of sodium, potassium and lithium acid ethane-1-hydroxy-1,1-diphosphonic; sodium, potassium and lithium acid salts ethylene diphosphonic and sodium, potassium and lithium salts of ethane-1,1,2-triphosphonic acid. Other examples include acid alkali metal salts ethane-2-carboxy-1,1-diphosphonic, hydroxymethane diphosphonic acid, carboxyphosphonic acid, acid ethane-1-hydroxy-1,1,2-triphosphonic, acid ethane-2-hydroxy-1,1,2-triphosphonic, acid propane-1,1,3,3-tetraphosphonic, propane-1,1,2,3-tetraphosphonic acid and acid propane-1,2,2,3-tetraphosphonic; (4) water soluble salts of polymers and copolymers of polycarboxylates, as described in US Pat. nº 3,308,067.

In addition, they can be used successfully polycarboxylate detergency builders, including salts Water soluble melitic acid, citric acid, acid carboxymethyloxysuccinic, salts of polymers of itaconic acid and maleic acid, tartrate monosuccinate, tartrate disuccinate and mixtures (TMS / TPS).

Certain zeolites may be used or aluminosilicates. One of these aluminosilicates that is useful in Compositions of the invention is a hydrated compound insoluble in formula amorphous water Na_ {x} [(AlO_ {2}} {y} \ cdotSiO_ {2}] in which x is a number from 1.0 to 1.2 e and is 1, and said amorphous material is additionally characterized by an exchange capacity of Mg ++ of approximately 50 eq-mg of CaCO 3 / g and a particle diameter of approximately 0.01 mm to about 5 mm. This ionic detergency builder is described in more detail in British Patent No. 1,479,250.

A second water-insoluble synthetic aluminosilicate ionic material useful herein is of a crystalline nature and has the formula Na z [(AlO 2) y y (SiO 2)] x H2O, in which z and y are integers of at least 6; the mole ratio of z and is in the range of 1.0 to about 0.5, and x is an integer from about 15 to about 264; and said aluminosilicate ion exchange material has a particle size diameter of about 0.1 mm to about 100 mm; a calcium ion exchange capacity on an anhydrous basis of at least about 200 milligrams equivalent of CaCO 3 hardness per gram; and a rate of calcium exchange on an anhydrous basis of at least about 0.5 grains /
liter / minute / gram. These synthetic aluminosilicates are described in more detail in British Patent No. 1,429,143.

Optical brighteners can be used to cotton, polyamide and polyester fabrics. Optical brighteners Suitable include compositions of Tiponal, stilbene, triazole and benzidine-sulfone, especially triacinyl stilbene substituted sulfonated, naphthotriazole stilbene sulfonated, benzidensulfone, etc., and the most preferred are combinations of stilbene and triazole. A preferred brightener is the brightener of stilbene N4, which is a dimorpholino-dianilino-stilbene-sulfonate.

Agents can also be added anti-foaming agents, for example, compounds of silicone, such as Silicane L 7604, in small effective amounts.

Bactericides can be used, for example, tetrachlorosalicylanilide and hexachlorophen, fungicides, dyes, pigments (water dispersible), preservatives, for example, formalin, ultraviolet absorbers, agents anti-yellowing, like sodium carboxymethyl cellulose, pH modifiers and pH buffers, color-safe bleaching agents, perfumes and dyes and blueing agents such as Iragon Blue L2D, Detergent Blue 472/372 and ultramarine blue.

Suppressor polymers of dirt and cationic softening agents.

The list of optional ingredients above does not It is planned to be exhaustive and other ingredients that may not have been cited, but that are well known in the art, They can also be included in the composition.

The pH of the compositions of the invention is generally in the range of 2.5 to 12.5, preferably in the range from 4 to 10, most preferably from 6 to 9, in order to achieve optimum cleaning of laundry.

Preferably, the detergent composition is a transparent / translucent two-color composition packaged in the transparent / translucent structure.

The containers of the invention can be filled in any suitable way. Preferably, the composition Liquid detergent is pre-mixed (the two components e introduced as filler in the same way as a single phase composition. The composition can also be introduced as component to component filler.

In use, the container is mixed with water (for example, inside a washing machine or dishwasher) with in order to dissolve the structure and release the content of the container.

The following specific examples illustrate additionally the invention, but the invention is not limited to the same.

Example 1

Ingredient Provider % of each layer Top layer (10% of the full composition) Oil Mineral Witco 65 Wax paraffin Penreco fifteen Silicone oil Dow Corning 10 Antifoam agent Dow Corning 10 Bottom layer (90% of the composition complete) Water 6 Propylene glycol Eastman Chemical twenty Non-ionic alcohol ethoxylate surfactant, Neodol® 25-9 Shell Chemical 25 MEA-LAS (alkyl linear) -benzene sulphonate monoethanolamine) Stepan 40 Miscellaneous 9

The top layer was prepared by melting paraffin wax at 60 ° C with mineral oil, then emulsifying silicone oil and antifoaming agent in the mixture. At 20 ° C, the top layer was a thick emulsion. The bottom layer was prepared in the order cited in the previous formulation. MEA-LAS was neutralized in situ by reacting monoethanolamine with LAS acid. First, a PVA bag was prepared by heat sealing the bottom using a M4045 Mono-Sol PVA film. 45 grams of the bottom layer and 5 grams of the top layer were introduced as filler in the prepared PVA bag. The bag was then sealed with orthogonal heat relative to the sealed bottom. The top layer floated to the top and formed a visible layer.

Example 2

Ingredient Provider % by weight of cap Top layer 3% of the composition complete) Oil mineral Witco 61 Wax paraffin Penreco 19 Properase® 1600L Genencor twenty Middle layer (47% of the composition complete) Water 9.0 Xylene sulphonate, 25% Stepan 10.5 Propylene glycol Eastman Chemical 10.0 Surfactant no ionic alcohol ethoxylate, Neodol® 25-9 Shell chemical 16.8 Sodium LAS Stepan 16.8 Sodium Alcohol Ethoxylate Sulfate, 59.39% Stepan 27.6 Miscellaneous 9.3 Bottom layer (50% of the formulation complete) Water 40 MEA-Citrate (citrate monoethanolamine) Harrman and fifty Reimer Monoethanolamine Dow Chemical 10

The top layer was prepared by melting paraffin wax at 45 ° C with mineral oil, followed by emulsification of Properase® 1600L in the mixture. After emulsification, the emulsion was cooled to 20 ° C to avoid excessive enzyme loss. The top layer was a thick emulsion. The other two layers were prepared following the order cited in the previous table. MEA-citrate was neutralized in situ by reacting monoethanolamine with citric acid. First, a PVA (polyvinyl alcohol) bag was prepared by heat sealing the longitudinal edges to form a tube, followed by heat sealing the bottom using a M4045 Mono-Sol PVA film. In the prepared PVA bag 25 grams of the lower layer, 23.5 grams of the middle layer and 15 grams of the top layer were introduced as filler. The bag was then sealed with orthogonal heat relative to the sealed bottom. The upper layer floated to the upper one and minimized the interfacial surface between the upper and middle layers. Three visible layers formed.

Claims (11)

1. A container of laundry detergent to be used in a single laundry application, in which the container understands:

(to)

a water soluble structure in the form of a polyhedron, which has four or more walls, in which each wall is inclined in a angle relative to each other wall;

(b)

a liquid laundry detergent composition contained within the water soluble polyhedral structure to be released after dissolution of the water soluble structure, in which the composition It comprises at least two layers:

(b1)

a hydrophilic layer; Y

(b2)

a hydrophobic layer

2. The package of claim 1, wherein the hydrophobic layer is on top. 3. The container of claim 1 or the claim 2, wherein the hydrophobic layer comprises an enzyme. 4. The packaging of any of the previous claims, wherein the volume ratio of the hydrophilic layer to the hydrophobic layer is at least about 60:40 5. The packaging of any of the previous claims, wherein the two minimum layers comprise total:

i)

from about 5 to about 90% of a surfactant detergent, by weight of the composition;

ii)

from about 0.05 to about 5% of an enzyme.

6. The packaging of any of the previous claims, wherein the composition comprises additionally a hydrotrope. 7. The packaging of any of the previous claims, wherein the composition comprises additionally a dye. 8. The packaging of any of the previous claims, wherein the water soluble structure is transparent. 9. The packaging of any of the previous claims, wherein the composition is transparent. 10. The packaging of any of the previous claims, further comprising a third layer 11. The packaging of any of the previous claims, wherein the water soluble structure It is in the form of a tetrahedron.