JP5133460B2 - Detergent composition comprising a mixture of chelating agents - Google Patents

Description

  The present invention relates to a compact liquid detergent used for laundry washing comprising a mixture of chelating agents.

  Due to the presence of metal ions, chelating agents are often formulated into detergents, which can have a negative impact on final performance. Many highly colored stains incorporate metal. The removal of the metal can often remove the stain and / or facilitate the removal by destabilizing its structure. Metal ions can also catalytically degrade the bleaching agent in the formulation, resulting in significant performance degradation. In particular, transition metal radical ions such as Fe, Cu and Mn can accelerate the decomposition of bleach and peroxide during washing and bleaching. Hard water ions, such as Ca and Mg, can also have deleterious interactions with surfactants used in cleaning formulations and can result in a reduction in available effective concentrations. Fatty acids can precipitate as calcium soaps, resulting in the formation of soap scum.

  Chelating agents are widely used chemicals that control the negative effects of metal ions in detergent products by chelating metals. Chelating agents are often organic compounds, which form multiple bonds with a single metal ion. Chelating agents can be introduced into detergents in acid or salt form, but usually salt forms increase the water solubility of the chelating agent. However, sodium ions interact with the fatty acids of the detergent composition resulting in the formation of a solid soap. Therefore, the chelating agent needs to be formulated into a composition that contains as little sodium ion as possible while still maintaining the solubility of the chelating agent. Another condition for the chelating agent is its solubility. The selected chelating agent must be soluble and remain soluble without the need to add water to the detergent composition. In addition, the chelating agent needs to be stable in solution during storage.

  Because phosphates can sequester alkaline earth metals, chelating agents containing phosphates have been widely used. However, according to laws in various countries, the concentration of phosphate in detergents needs to be significantly reduced. Alternatively, detergent manufacturers supply more phosphate-free detergent. Therefore, detergent composition formulations need to meet regulatory requirements in various countries.

  In formulating a compact liquid detergent composition, the chelating agent is selected to meet the criteria for controlling metal ions, soluble in the detergent composition, stable during preparation and storage, and meet regulatory requirements. There must be.

  In addressing these problems, Applicants surprisingly found that the sodium salt form of the chelating agent diethylenetriaminepentaacetate (DTPA) neutralized with 2-aminoethanol or sodium salt form of S, S-ethylenediamine. It has been discovered that when combined with -N, N'-disuccinic acid (EDDS), the overall amount of chelator can be reduced while maintaining good solubility and high active concentration. Furthermore, undesirable sodium soap formation is reduced because the amount of undesirable sodium ions introduced into the compact liquid detergent composition is reduced. The compact liquid detergent composition of the present invention also meets wider regulatory requirements and can be used as an international formulation.

  Chelating agents are known to be incorporated into cleaning compositions. For example, in WO 2009/013534 (Innospec Limited), a salt of ethylenediamine disuccinic acid (EDDS) is used to stabilize hydrogen peroxide. In WO 2009/013539 (Innospec Limited), the magnesium salt of ethylenediamine disuccinic acid (EDDS) is used in detergent compositions in the form of water-soluble and water-free solids. In WO 2009/013541 (Innospec Limited), a mixture of the chelating agent 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) and ethylenediamine disuccinic acid (EDDS) is used in the detergent composition. Yes. In European Patent No. 1,280,882 (Procter & Gamble), chelating agents are used in liquid fabric softening compositions. In WO 01/83668 and 02/074893 (both Procter & Gamble) chelating agents have been used in detergent products.

  A compact liquid detergent composition comprising less than 25% by weight of the composition of water and a mixture of chelating agents, the first chelating agent being a sodium salt of ethylenediamine-N, N′-disuccinic acid, 2 A compact liquid detergent selected from the group consisting of ethylenediamine-N, N′-disuccinic acid neutralized with aminoethanol, and mixtures thereof, wherein the second chelating agent is the sodium salt of diethylenetriaminepentaacetate Composition.

  The detergent product of the present invention is a water-soluble pouch, more preferably a multi-compartment water-soluble pouch, or a compact liquid detergent suitable for use as a conventional liquid detergent stored in a container. The water-soluble pouch, when present, includes a water-soluble film and at least a first and optionally a second compartment. The first compartment includes a first composition that includes a mixture of chelating agents. The second compartment includes a second composition. Preferably, the pouch includes a third compartment and a third composition. Optionally, the second and third compositions are preferably visibly different from each other and from the first composition.

Compact liquid detergent composition The composition of the present invention is a compact liquid. The term “liquid” is meant to include liquid, paste, waxy or gel-like compositions. The liquid composition may include a solid. Solids can include powders or agglomerates such as microcapsules, beads, noodles or one or more nacreous balls, or mixtures thereof. Such solid elements can provide technical effects through cleaning or as a pretreatment component, delayed release component or sequential release component. Alternatively, the solid element may also provide an aesthetic effect.

  The term “compact” is meant to include liquid, paste, waxy or gel-like compositions that contain less than 25% water by weight of the composition.

  In a preferred embodiment, the composition of the present invention is in the form of a water-soluble pouch, more preferably a multi-compartment pouch. The water-soluble pouch, when present, includes a water-soluble film and at least a first and optionally a second compartment. The first compartment includes a first composition that includes a mixture of chelating agents. The second compartment comprises a second, preferably different composition.

Chelating agents Chelating agents are used in the present invention to control metal ion content, stabilize bleach in cleaning solutions and in storage, and increase stain removal by removing metal ions from the stain. .

  A chelating agent is a molecule that forms a chelate by coordination covalent bonding with a metal ion. A chelate is a coordination compound, in which a central metal atom is bonded to one or more atoms of at least another molecule or ion called a ligand, so that at least one heterocycle is Formed with metal ions as part of the ring. Chelating agents are widely used in detergents, soaps, cleaning products and water treatment. Chelating agents are typically multivalent molecules, usually aminocarboxylates having at least two binding sites. The effectiveness of a chelating agent can be evaluated by measuring binding constants with various metals. Within limits, chelating agents are usually more effective at increasing the pH of the wash solution that prevents protonation of the chelating agent.

  Applicant has proposed that the sodium salt form of the chelating agent diethylenetriaminepentaacetate (DTPA) neutralized with 2-aminoethanol (MEA) or sodium salt form of S, S-ethylenediamine-N, N′-disuccinic acid. It has been discovered that, in combination with (EDDS), a synenergy can be created between the chelating agents, reducing the amount of chelating agent while maintaining a high active concentration and the desired solubility. This allows for further flexibility in the formulation. Furthermore, the amount of undesirable sodium ions introduced into the compact liquid detergent composition is reduced. Lowering the concentration of chelating agent improves the solubility and stability of the chelating agent and allows the use of a mixture of chelating agents in a compact liquid detergent composition. Since the chelating agent does not contain phosphate, the compact liquid detergent composition of the present invention also meets wider regulatory requirements.

  While the chelating agent is preferably in a fully neutralized form, acid forms or partially neutralized forms are encompassed by the present invention.

  EDDS is an effective chelator for transition metals and heavy metals. Transition metals can cause degradation of peroxide species and can cause problems with compositions containing bleach. This can lead to reduced bleaching performance and the generation of hydroxyl radicals that can lead to fiber damage and reduced product stability. EDDS has two stereogenic centers and therefore has three possible stereoisomers. The mixture of chelating agents of the present invention may comprise any stereoisomer. Thus, [R, R] -EDDS, [R, S] -EDDS, [S, S] -EDDS, and any combination thereof can be selected. The EDDS is preferably present in substantially [S, S] form. Preferably at least 50%, more preferably at least 70% of the EDDS are [S, S] structures. The [S, S] -EDDS form of EDDS is biodegradable and is therefore the most preferred stereoisomer.

  The EDDS can be present in the compact liquid detergent composition in the form of the sodium salt or in the form neutralized with MEA, preferably in the form neutralized with MEA.

  DTPA is an effective chelator for transition metals and heavy metals. DTPA is a polyaminocarboxylic acid consisting of a diethylenetriamine backbone modified with five carboxymethyl groups. DTPA is used as its conjugate base with high affinity for metal cations.

  DTPA can be present in the compact liquid detergent composition, preferably in the form of a metal salt, DTPA. More preferably, DTPA is present in the compact liquid detergent composition in the form of a sodium salt containing 2 to 5 moles of sodium per mole of DTPA.

  The chelating agent is preferably added to the composition in liquid form and preferably remains in liquid form during preparation, storage and use. DTPA is water soluble in a 1: 2 ratio with sodium, and EDDS is water soluble in a form neutralized with aminoethanol or in a ratio 1: 2 with sodium.

  In a preferred embodiment, the chelating agent combination of the present invention comprises 10 moles of EDDS in a form neutralized with MEA per mole of DTPA sodium salt to 1 mole of EDDS in a form neutralized with MEA per 10 moles of DTPA sodium salt. Including.

  The composition of the present invention is 0.05% to 5% by weight of the composition, preferably 0.1% to 4% by weight of the composition, most preferably 0.5% to 2.0% of the composition. Contains a mixture of weight percent chelating agents.

Optional Components of Compact Liquid Detergent Compositions The compositions of the present invention may include one or more components such as:

Solvent System The solvent system of the compact liquid detergent composition of the present invention may be a mixture of organic solvents. The composition does not contain added water. High moisture content can have undesirable effects on film properties. Furthermore, if the moisture content is too high or too low, it can have an adverse effect on the detergent composition, i.e. by causing phase separation. The water in the composition is derived from the raw materials. Suitable organic solvents include 1,2-propanediol, ethanol, glycerol, dipropylene glycol, methylpropanediol, and mixtures thereof. Also, other lower alcohols, also C ₁ -C ₄ alkanolamines such as monoethanolamine and triethanolamine can be used. The solvent system may be absent, for example as in the anhydrous solid embodiments of the present invention, but more typically 0.1% to 98%, preferably at least 1% to 50%, more usually. Is present in concentrations ranging from 5% to 25%.

  Water is usually present at a concentration ranging from 5% to 25%, preferably 7% to 20%, more preferably 8% to 15% by weight of the compact liquid detergent composition.

Surfactant The composition of the present invention may contain a surfactant, which is used in the present invention as a detersive surfactant for soil suspension purposes.

  The surfactant used may be of the anionic, nonionic, zwitterionic, amphoteric, or cationic type, or a compatible mixture of these types of surfactants. May be included. More preferably, the surfactant is selected from the group consisting of anionic, nonionic, cationic surfactant, and mixtures thereof. Preferably, the composition is substantially free of betaine surfactant. Detersive surfactants useful herein are described in US Pat. Nos. 3,664,961 (issued Norris, May 23, 1972), 3,919,678 (Laughlin et al., December 1975). 30th issue), 4,222,905 (Cockrel, issued September 16, 1980), and 4,239,659 (Murphy, issued December 16, 1980). . Anionic and nonionic surfactants are preferred.

  Useful anionic surfactants may themselves be several different types of surfactants. For example, water soluble salts of higher fatty acids, or “soaps,” are anionic surfactants useful in the compositions herein. This includes alkali metal soaps such as sodium, potassium, ammonium and alkylammonium salts of higher fatty acids containing 8 to 24 carbon atoms, preferably 12 to 18 carbon atoms. included. Soaps can be made by direct saponification of fats and oils or by neutralization of free fatty acids. Particularly useful are the sodium and potassium salts of fatty acid mixtures derived from coconut oil and tallow, ie sodium or potassium tallow and coconut soap.

Suitable anionic surfactants other than soaps suitable for use herein have an alkyl group containing 10-20 carbon atoms and a sulfonic acid or sulfate group in its molecular structure. Water-soluble salts of the organic sulfur reaction product, preferably alkali metal and ammonium salts. (The term “alkyl” includes the alkyl portion of the acyl group.) Examples of this group of synthetic surfactants are: a) sodium alkyl sulfate, potassium alkyl sulfate, and ammonium alkyl sulfate, particularly tallow or coconut oil. those obtained by sulfating the higher alcohols such as those produced by reducing the glycerides (C ₈ -C ₁₈ carbon atoms), b) alkyl polyethoxylate sodium sulfate, alkyl polyethoxylate potassium sulfate, and alkyl polyethoxylate Ammonium sulfate, in particular those in which the alkyl group contains 10 to 22, preferably 12 to 18 carbon atoms and the polyethoxylate chain contains 1 to 15, preferably 1 to 6 ethoxylate moieties; And c) 9-15 carbons in which the alkyl group is in a linear or branched structure Containing an atom, a potassium sodium alkylbenzene sulfonate and alkyl benzene sulphonic acids, e.g., those of the type described in U.S. Patent Nos. 2,220,099 and 2,477,383. Of particular value are linear linear alkyl benzene sulfonates, abbreviated as C ₁₁ -C ₁₃ LAS, in which the average number of carbon atoms in the alkyl group is 11-13.

Preferred nonionic surfactants are those of formula R ¹ (OC ₂ H ₄ ) _n OH, where R ¹ is a C ₁₀ -C ₁₆ alkyl group or a C ₈ -C ₁₂ alkylphenyl group. , N is 3-80. Particularly preferred are condensation products of C _{12 to} C ₁₅ alcohols with 5 to 20 moles of ethylene oxide per mole of alcohol, for example, C _{12 to} C ₁₃ alcohols with 6.5 moles of ethylene oxide per mole of alcohol. Condensed with

  The composition of the present invention comprises 1% to 80% surfactant by weight of the composition. A surfactant is a constituent of the first composition. Preferably, the first composition comprises 5% to 50% surfactant by weight of the composition. The second and third compositions, if present, may contain a surfactant at a concentration of 0.1 to 99.9%.

  When the selected surfactant is LAS, the composition is preferably 5% to 30% LAS of the compact liquid detergent composition, more preferably 7% to 25% by weight of the compact liquid detergent composition. Including LAS.

Surfactant-Promoting Polymer The composition of the present invention may optionally comprise a polymer. Polymers suitable for the present invention are referred to as surfactant enhanced polymers because they can enhance the effectiveness of the surfactant. The most common purpose of a surfactant is to emulsify or disperse one liquid phase into another, usually the oil phase in water. When two immiscible liquids come into contact, a boundary is formed between them. Increasing the interface causes one phase to disperse into the other into small droplets. The lower the interfacial tension, the more emulsified one phase is on the other. Thus, low interfacial tension correlates with cleaning efficiency in cleaning and washing. The term surfactant-enhanced polymer means a polymer that can reduce the time to reach the interfacial tension equilibrium of the surfactant.

  In addition, surfactant-enhanced polymers aid in micelle disintegration on fat. The main feature of the surfactant-enhancing polymer is its amphiphilic nature. They have a balanced proportion of hydrophobic and hydrophilic structural elements. Therefore, they are first sufficiently hydrophobic to absorb hydrophobic soil and remove it from the surface with a surfactant. Second, it is sufficiently hydrophilic to keep the separated hydrophilic soil in the washing and washing liquid and prevent the soil from reattaching to the surface. For example, in polyethylene glycol polyvinyl acetate (PEG-PVAc) polymer, the hydrophobic PVAc portion of the PEG-PVAc polymer ensures that the surfactant and hydrophobic oil stain interact, while the PEG-PVAc polymer The hydrophilic polyethylene glycol PEG moiety maintains the dispersion of the polymer-surfactant structure in water.

The amphiphilic surfactant-promoting polymer in the present invention is preferably based on a water-soluble polyalkylene oxide as a hydrophilic main chain and a hydrophobic side chain formed by polymerization of a vinyl ester component. The polymer preferably has an average of no more than one graft site per 50 alkylene oxide units and an average molar mass _Mw of 3000 to 100,000.

  The most preferred surfactant-promoting polymers for the present invention are known under the trade names Sokalan PG101 (PEG-PVAc), Sokalan and Sokalan HP22, sold by BASF Aktigensellschaft, Ludwigshafen, Germany. Surfactant enhancing polymers useful herein are described in WO 2007/138053 (BASF Aktiengesellschaft), 2007/13854 (Procter & Gamble Company).

  The compact liquid detergent composition of the present application comprises from 0.1% to 10% surfactant-enhanced polymer by weight of the compact liquid detergent composition, preferably from 3% to 8% by weight of the compact liquid detergent composition. The agent-enhancing polymer, more preferably about 4% by weight of the compact liquid detergent composition.

Opacifier The compact liquid detergent composition may comprise an opacifier. The opacifier according to the invention is a solid inert compound that does not dissolve in the composition and refracts, scatters or absorbs most light wavelengths.

The opacifier can be styrene / acrylate latex, titanium dioxide, tin dioxide, any form of modified TiO ₂ , such as carbon modified TiO ₂ or metal doped (eg, platinum, rhodium) TiO ₂ or _second oxide. tin, TiO 2 _/ mica coated with bismuth oxychloride or bismuth oxychloride, silica coated with TiO ₂ or metal oxide coated, and that is selected from the group consisting of mixtures preferred. A particularly preferred styrene / acrylate latex is that available from Rohm & Haas Company and sold under the trademark Acusol. The latex is characterized by a pH of about 2 to about 3, has approximately 40% solids in water, and has a particle size of about 0.1 to about 0.5 micrometers. Particularly preferred Acusol. RTM polymers include Acusol. RTM. OP301 (styrene / acrylate) polymer, Acusol. RTM. OP302 (styrene / acrylate / divinylbenzene copolymer), Acusol. RTM. OP303 (styrene / acrylamide copolymer), Acusol. RTM. OP305 (styrene / PEG-10 maleate / nonoxynol-10 maleate / acrylate copolymer) and (styrene / acrylate / PEG-10 dimaleate copolymer) and mixtures thereof. Preferred species have a molecular weight of 1000 to 1 000 000, more preferably 2000 to 500 000, most preferably 5000 to 20000.

The opacifier is preferably present in an amount sufficient to keep the composition in which it is incorporated white. When the opacifier is an inorganic opacifier (eg, TiO ₂ or a modification thereof), the opacifier is preferably 0.001% to 1% by weight of the compact liquid detergent composition, more preferably 0.01% to It is present at a concentration of 0.5 wt%, most preferably 0.05 wt% to 0.15 wt%.

  When the opacifier is an organic opacifier (eg, styrene / acrylate latex), the opacifier is preferably 0.001% to 2.5%, more preferably 1% to 2.% by weight of the compact liquid detergent composition. It is present at a concentration of 2% by weight, most preferably 1.4% to 1.8% by weight.

Antioxidants The compact liquid detergent composition may comprise an antioxidant. The second and third compositions, if present, may also contain an antioxidant. Without wishing to be limited by theory, Applicants have found that the presence of antioxidants in formulations, for example in perfumes, which tend to oxidize over time and at higher temperatures can lead to yellowing. It is believed to reduce or preferably prevent the reaction of reactive compounds.

  Antioxidants according to the present invention are molecules that can delay or prevent the oxidation of other molecules. The oxidation reaction can generate free radicals, which can initiate a chain reaction of decomposition. Antioxidants terminate their chain reactions by removing free radical intermediates and blocking other oxidation reactions by themselves being oxidized. As a result, antioxidants are often reducing agents. Antioxidants include butylated hydroxyl toluene (BHT), butylated hydroxyl anisole (BHA), trimethoxybenzoic acid (TMBA), α, β, λ and δ tocophenols (vitamin E acetate), 6 hydroxy-2,5, 7,8-tetra-methylchroman-2-carboxylic acid (Trolox), 1,2, benzisothiazolin-3-one (Proxel GLX), tannic acid, gallic acid, Tinoguard AO-6, Tinoguard TS , Ascorbic acid, alkylated phenol, ethoxyquine 2,2,4 trimethyl, 1-2 dihydroquinoline, 2,6 di or tert or butyl hydroquinone, tert, butyl, hydroxylanisole, lignosulfonic acid and its salts, Benzofuran, benzopyran From tocopherol sorbate, butylated hydroxyl benzoic acid and its salts, galic acid and its alkyl esters, uric acid, its salts and alkyl esters, sorbic acid and its salts, dihydroxyfumaric acid and its salts, and mixtures thereof Is preferably selected from the group consisting of Preferred antioxidants are those selected from the group consisting of alkali and alkaline earth metal sulfites and hydrosulfites, more preferably sodium sulfite or sodium hydrosulfite.

  Antioxidants are preferably 0.01% to 2%, more preferably 0.1% to 1%, most preferably 0.3% to 0.5% by weight of the compact liquid detergent composition. Present at a concentration of.

  When an inorganic opacifier is used, the opacifier and the antioxidant are preferably present in a proportion of 0.1 to 0.5, more preferably 0.12 to 0.35. On the other hand, when an organic opacifier is used, the opacifier and the antioxidant are preferably present in a ratio of 2 to 6, more preferably 3 to 5.

Rheology modifier In a preferred embodiment, the compact liquid detergent composition comprises a rheology modifier. The rheology modifier is selected from the group consisting of non-polymeric crystalline, hydroxy functional materials, polymer rheology modifiers and imparts shear thinning properties to the aqueous liquid matrix of the composition. Crystalline, hydroxy-functional materials are rheology modifiers that form a thread-like structure system throughout the matrix of the composition by in situ crystallization in the matrix. Specific examples of suitable crystalline, hydroxyl-containing rheology modifiers include castor oil and its derivatives. Particularly preferred are hardened castor oil derivatives such as hardened castor oil and hydrogenated castor wax. Commercial castor oil-based, crystalline, hydroxyl-containing rheology modifiers include Rheox, Inc. (Present Elementis) THIXCIN (registered trademark). The polymer rheology modifier is preferably selected from polyacrylates, polymer rubbers, other non-rubber polysaccharides, and combinations of these polymer materials. Preferred polymer rubber materials include pectin, alginate, arabinogalactan (gum arabic), carrageenan, gellan gum, xanthan gum, guar gum, and mixtures thereof.

Fabric Care Benefit Agent The compact liquid detergent composition may include a fabric care benefit agent. As used herein, “fabric care benefit agent” refers to any material that has an effect on fabric care when the material is on the garment / fabric in an appropriate amount, eg, fabric softening, It provides effects such as coloring protection, fluff / fluff reduction, wear prevention, wrinkle prevention, and the like to clothing and fabrics, particularly cotton and cotton-rich clothing and fabrics. Non-limiting examples of fabric care benefit agents include cationic surfactants, silicones, polyolefin waxes, latexes, oily sugar derivatives, cationic polysaccharides, polyurethanes, fatty acids, and mixtures thereof. When present in a compact liquid detergent composition, the fabric care benefit agent is suitably up to 30% by weight of the compact liquid detergent composition, more typically from 1% to 20%, preferably from 2% to The concentration is 10% by weight.

Cleaning enzymes Suitable cleaning enzymes for use herein include carbohydrases including proteases, amylases, lipases, cellulases, mannanases and endoglucanases, and mixtures thereof. Enzymes can be used at concentrations taught in the art, for example, concentrations recommended by suppliers such as Novo and Genencor. Typical concentrations in compact liquid detergent compositions are 0.0001% to 5%. When present, in certain embodiments of the invention, the enzyme can be used at very low concentrations, such as 0.001% or less, or in more powerful laundry detergent formulations according to the invention, the enzyme Can be used at higher concentrations, for example 0.1% or more. Since some consumers prefer “non-biological” detergents, the present invention includes both enzyme-containing and enzyme-free embodiments.

Deposition aid As used herein, “deposition aid” refers to any cationic polymer or combination of cationic polymers that significantly enhances the deposition of the fabric care benefit agent on the fabric during laundering. Preferably, the deposition aid is a cationic or amphoteric polymer. The amphoteric polymers of the present invention also have a net cationic charge, i.e., the total cationic charge on these polymers exceeds the total anionic charge. Non-limiting examples of deposition enhancers are cationic polysaccharides, chitosan and its derivatives, and cationic synthetic polymers. Preferred cationic polysaccharides include cationic cellulose derivatives, cationic guar gum derivatives, chitosan and derivatives, and cationic starch.

Builder The compact liquid detergent composition may optionally include a builder. Suitable builders include U.S. Pat. Nos. 3,923,679, 3,835,163, 4,158,635, 4,120,874, and 4,102, Polycarboxylate builder containing cyclic compounds, especially alicyclic compounds, such as those described in No. 903. Particularly preferred are citrate builders such as citric acid and its soluble salts (especially sodium salts). Other preferred builders include aluminosilicates such as zeolite A, B or MAP; fatty acids or salts thereof, preferably sodium salts, preferably C12 to C18 saturated and / or unsaturated fatty acids; and alkali or alkaline earth metals Examples include carbonates, preferably sodium carbonate.

  The compact liquid detergent composition of the present application comprises 2% to 20% fatty acid of the compact liquid detergent composition, preferably 5% to 15% fatty acid of the compact liquid detergent composition, most preferably the compact liquid detergent. 6% to 10% by weight of fatty acid of the composition.

Bleach systems Suitable bleaching agents herein include chlorine bleaches and oxygen bleaches, especially inorganic perhydrate salts such as sodium perborate monohydrate and tetrahydrate, and Sodium percarbonate optionally coated to provide a controlled release rate (see, eg, British Patent A-1466799 for sulfate / carbonate coatings), preformed organic peroxyacids and organic peroxy These mixtures with acid bleach precursors and / or transition metal containing bleach catalysts (especially manganese or cobalt). Inorganic perhydrate salts typically range from 1% to 40%, preferably from 2% to 30%, more preferably from 5% to 25% by weight of the compact liquid detergent composition. Incorporated by concentration. Preferred peroxyacid bleach precursors for use herein include perbenzoic acid and substituted perbenzoic acid precursors; cationic peroxyacid precursors; peracetic acid precursors such as TAED, acetoxybenzene sulfonic acid Sodium and pentaacetylglucose; pernonanoic acid precursors such as sodium 3,5,5-trimethylhexanoyloxybenzenesulfonate (iso-NOBS) and sodium nonanoyloxybenzenesulfonate (NOBS); Amide-substituted alkylperoxyacid precursors (European Patent No. A-0170386); and benzoxazine peroxyacid precursors (European Patents Nos. A-0332294 and A-0482807). The bleach precursor is typically incorporated at a concentration ranging from 0.5% to 25%, preferably 1% to 10% by weight of the composition, while the preformed organic peroxyacid itself is Typically, it is incorporated at a concentration ranging from 0.5% to 25%, more preferably from 1% to 10% by weight of the compact liquid detergent composition. Preferred bleaching catalysts for use herein include triazacyclononane manganese and related complexes (US Pat. Nos. A-4246612, A-5227084); bispyridylamine cobalt, bispyridylamine copper, bispyridyl. Amine manganese, and bispyridylamine iron, and related complexes (US Pat. No. 5,114,611); and pentamine acetate cobalt (III) and related complexes (US Pat. No. 4,810,410).

Brightener The compact liquid detergent composition may comprise a brightener. It has been found that such dyes exhibit favorable coloration efficiency during the wash wash cycle and do not show excessive undesired accumulation during wash. The whitening agent is included in the total laundry detergent composition in an amount sufficient to provide a coloring effect on the fabric being washed in a solution containing the detergent. In one embodiment, the multi-compartment pouch is from 0.0001% to 1% by weight of the compact liquid detergent composition, more preferably from 0.0001% to 0.5%, and even more preferably from the compact liquid detergent composition. 0.0001% by weight to 0.3% by weight.

Pearlescent Agent The compact liquid detergent composition of the present invention may comprise a pearlescent agent. Such pearlescent agents can be organic or inorganic, but are preferably inorganic. Most preferably, the pearlescent agent is selected from mica, TiO ₂ coated mica, bismuth oxychloride, or mixtures thereof.

Perfume It is preferred that perfume is incorporated into the compact liquid detergent composition of the present invention. The perfume can be prepared as a premix liquid and may be linked to a carrier material such as cyclodextrin or encapsulated. When encapsulated, the perfume is preferably encapsulated in a melamine / formaldehyde coating.

Other Additives Examples of other suitable cleaning additive materials include, but are not limited to, enzyme stabilizing systems; fixatives for anionic dyes, complexing for anionic surfactants Removal agents such as agents, and mixtures thereof; optical brighteners or fluorescers; soil release polymers; dispersants; foam suppressors; dyes; coloring agents, such as toluenesulfonate, cumenesulfonate, and naphthalenesulfonate Hydrotropes such as; color speckles; colored beads, spheres or extrudates; clay softeners and mixtures thereof.

Composition Preparation The compact detergent compositions herein can generally be prepared by mixing the ingredients together. If a pearlescent material is used, it should be added later in the mixing. When using a rheology modifier, it is preferred to form the premix first, and the rheology modifier is dispersed in the water and optionally some other ingredients that are ultimately used to make up the composition. Is done. The premix is formed in this way to form a structured liquid. This structured premix can then be added while stirring the premix and the surfactant and essential laundry aid materials can be used along with water and any optional detergent composition aids.

Pouch Material When the compact liquid detergent composition is packed into a pouch, the pouch is preferably made of a film material that is soluble or dispersible in water and is at least 50%, preferably at least 75%, or even at least 95% water soluble. Have sex. Water solubility is measured by the method described here after using a glass filter with a maximum pore size of 20 micrometers: 50 grams ± 0.1 grams of pouch material is placed in a pre-weighed 400 mL beaker. 245 mL ± 1 mL of distilled water is added. This is vigorously stirred for 30 minutes on a magnetic stirrer set at 600 rpm. The mixture is then filtered through a folded qualitative sintered glass filter with a pore size as defined above (up to 20 micrometers). Water is dried from the collected filtrate by any conventional method and the weight of the remaining material is measured (this is the dissolved or dispersed fraction). The percentage of solubility or dispersity can then be calculated.

  Preferred pouch materials are polymeric materials, preferably polymers that are formed into films or sheets. The pouch material can be obtained, for example, by casting, blow molding, extrusion, or blow extrusion of a polymer material as is known in the art.

  Preferred polymers, copolymers or derivatives thereof suitable for use as pouch materials are disclosed in WO 03/045812 (Procte & Gamble Company), 04/085856 (Procter & Gamble Company) and 07/130684. (Procter & Gamble Company).

  Preferably, the concentration of polymer, eg, PVA polymer, in the pouch material is at least 60%. The polymer can have any weight average molecular weight, but is preferably 1000 to 1,000,000, more preferably 10,000 to 300,000, and even more preferably 20,000 to 150,000.

  A mixture of polymers can also be used as the pouch material. This can be beneficial in controlling the mechanical and / or dissolution properties of the compartment or pouch depending on its application and required needs. Suitable mixtures include, for example, a mixture in which one polymer has a higher water solubility than another polymer and / or one polymer has a higher mechanical strength than another polymer. Also suitable are mixtures of polymers having different weight average molecular weights.

  Of course, different film materials and / or different thickness films can be used to make the compartments of the present invention. The benefit in selecting different films is that the resulting compartment can exhibit different solubility or release characteristics.

  The most preferred pouch materials are PVA films known by the trade name Monosol M8630 sold by MonoSol LLC (Gary, Ind., USA), and PVA films with corresponding solubility and deformation characteristics. Other films suitable for use herein include the trade name PT film supplied by Aicello or the film known as K-series, or the film known as VF-HP film supplied by Kuraray. Is mentioned.

  Also, the pouch material herein can include one or more additive components. For example, it may be beneficial to add plasticizers such as glycerol, ethylene glycol, diethylene glycol, propylene glycol, sorbitol, and mixtures thereof. Other additives include functional detergent additives that will be delivered to the wash water, such as organic polymer dispersants.

  For deformability reasons, the pouch or pouch compartment containing a component that is liquid is preferably up to 50%, preferably up to 40%, more preferably up to 30%, more preferably up to maximum of the volume space of this compartment. It contains bubbles having a volume of 20%, more preferably up to 10%.

Process for making water-soluble pouches The process of making water-soluble pouches can be performed using any suitable equipment and method. Single compartment pouches are made using vertical, but preferably horizontal type filling techniques known in the art.

  Processes for making water-soluble pouches are described in EP 1504994 (Procter & Gamble Company) and WO 02/40351 (Procter & Gamble Company). A process for making a multi-compartment water-soluble pouch is described in co-pending patent application No. 09161692.0 (filed September 2009, Procter & Gamble Company).

Secondary Packaging Preferably, the multi-compartment pouch of the present invention is further packaged in an outer package. Such an outer package can be seen through or partially through a container such as a transparent or translucent bag, tab, carton or bottle. The pack can be made from plastic or any other suitable material, provided that the material is strong enough to protect the pouch during shipping. This type of pack is also very useful because it eliminates the need for the user to open the pack and see how many pouches remain. Alternatively, the pack may have an outer package that is not transparent, possibly an outer package with indicia or graphics that represent the visually typical contents of the pack.

Cleaning Process The compact liquid detergent of the present invention is suitable for laundry cleaning applications. Compact liquid detergents are suitable for hand washing or machine washing conditions. For machine cleaning, the compact liquid detergent may be supplied from a dispensing tray or added directly into the washing machine drum either in the form of a water soluble pouch or in the form of a compact liquid.

^１Ｈ−ＥＤＤＳ：エチレンジアミン−Ｎ，Ｎ’−二コハク酸
性能：
キレート剤の性能は、ワイン及び茶で測定された。ワイン及び茶の染みが綿布に塗布され、ＥＭＣ（ＵＳ）から得られた。染み及び０．５ｋｇのＴシャツからなるバラスト負荷をＭｉｎｉＷａｓｈｅｒに加えて、中位の米国洗浄条件を表した。洗浄水を３２．２℃±１℃及び１ｍｍｏｌ／Ｌ（６ｇｐｇ）の硬度に設定し、すすぎ水を１５．５℃±１℃に設定した。水量は１５リットルであり、洗浄時間は１２分間であった。 The following are examples of pouch products of the present invention.

¹ H-EDDS: ethylenediamine-N, N′-disuccinic acid Performance:
Chelator performance was measured in wine and tea. Wine and tea stains were applied to cotton fabric and obtained from EMC (US). A ballast load consisting of a stain and a 0.5 kg T-shirt was added to the MiniWasher to represent medium US wash conditions. The wash water was set to 32.2 ° C. ± 1 ° C. and a hardness of 1 mmol / L (6 gpg), and the rinse water was set to 15.5 ° C. ± 1 ° C. The amount of water was 15 liters and the washing time was 12 minutes.

  The stain and ballast were dried at high speed and heat at the end of each cycle, with a cool-down cycle. The results were then analyzed by image analysis, a method that allows the amount of stain removed to be calculated. The stain is imaged before and after cleaning. By imaging, the amount of stain removal index (SRI) is calculated. SRI 100 means complete removal and SRI 0 means that it was not removed at all.

  The Laundry Image Analysis system (Merlin image analysis system) measures the stain removal on a specialized stain sample. This system uses a video camera to obtain a sample color image. Sample images are taken before and after cleaning the sample. The obtained image is then analyzed by computer software (Global R & D computing). The software compares the unwashed stain with the washed stain and the unwashed fabric with the washed fabric and presents a 5-digit value representing stain removal. The data is then statistically analyzed to determine statistically significant differences between detergent performance.

The stain removal index uses the initial fabric as a reference to determine the color difference between the unwashed stain and the washed stain. Higher values indicate better cleaning and stain removal and hence better detergents. The standard deviation is 1.

Product stability:
Products (I-III) were prepared by combining Composition C with a combination of three different chelating agents. The product (75 g) was stored in a glass bottle (capacity 100 mL) at 4 ° C., 20 ° C. and 35 ° C. for 4 weeks. Product stability was then visually assessed. If there is a visible precipitate or product phase separation, the stability is considered to be unacceptable. If there is no sign of change during the storage period, the stability is considered acceptable.

  The stability test shows the synenergy between the chelating agents DTPA and EDDS. A compact liquid detergent composition comprising 0.7% Na-DTPA is stable but does not provide the desired cleaning effectiveness. When the amount of Na-DTPA is increased to an effective concentration, the composition does not meet the stability condition. The combination of 0.7% Na-EDDS and 0.7% Na-DTPA provides the desired cleaning effectiveness and meets stability requirements.

  The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm”.

Claims (6)

A compact liquid detergent composition comprising:
Ethylenediamine comprising a mixture of less than 25% by weight of water and a chelating agent, wherein the first chelating agent is neutralized with ethylenediamine-N, N′-disuccinic acid sodium salt, 2-aminoethanol A compact liquid detergent composition selected from the group consisting of N, N'-disuccinic acid and mixtures thereof, wherein the second chelating agent is the sodium salt of diethylenetriaminepentaacetate. The chelating agent mixture can be mixed with diethylenetriaminepentaacetate and 2-aminoethanol from a molar ratio of 1:10 diethylenetriaminepentaacetate and ethylenediamine-N, N′-disuccinic acid neutralized with 2-aminoethanol. 2. A compact liquid detergent composition according to claim 1 comprising a 10: 1 molar ratio with summed ethylenediamine-N, N'-disuccinic acid.   The compact liquid detergent composition according to claim 1 or 2, wherein the liquid detergent composition comprises 0.05% to 5% by weight of the chelating agent mixture of the composition.   4. The compact liquid detergent composition of claim 3, wherein the liquid detergent composition comprises from 0.1% to 4% by weight of the composition of a chelating agent.   5. A compact liquid detergent composition according to claim 4, wherein the liquid detergent composition comprises from 0.5% to 2% by weight of the composition of a chelating agent.   The compact liquid detergent composition as described in any one of Claims 1-5 in which the said compact liquid detergent composition contains an opacifier and antioxidant.