EP2997121A1 - Machine dishwash detergent composition - Google Patents

Machine dishwash detergent composition

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Publication number
EP2997121A1
EP2997121A1 EP14724433.9A EP14724433A EP2997121A1 EP 2997121 A1 EP2997121 A1 EP 2997121A1 EP 14724433 A EP14724433 A EP 14724433A EP 2997121 A1 EP2997121 A1 EP 2997121A1
Authority
EP
European Patent Office
Prior art keywords
phosphate
nonionic surfactant
detergent composition
composition according
formula
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14724433.9A
Other languages
German (de)
French (fr)
Other versions
EP2997121B1 (en
Inventor
Olaf Cornelis Petrus Beers
Amelia Neeltje Reinhilde Dorothea FONTIJNE-DORSMAN
Tsega JOSEPH
Hendrik LAGERWAARD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP14724433.9A priority Critical patent/EP2997121B1/en
Priority to PL14724433T priority patent/PL2997121T3/en
Publication of EP2997121A1 publication Critical patent/EP2997121A1/en
Application granted granted Critical
Publication of EP2997121B1 publication Critical patent/EP2997121B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/825—Mixtures of compounds all of which are non-ionic
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/33—Amino carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/75—Amino oxides

Definitions

  • the present invention is in the field of a machine dishwash detergent composition
  • a machine dishwash detergent composition comprising an amino (poly) carboxylic compound such as methylglycine diacetic acid (MGDA) , glutamic diacetic acid (GLDA) and imino disuccinic acid (IDS), and at least two different nonionic surfactants.
  • MGDA methylglycine diacetic acid
  • GLDA glutamic diacetic acid
  • IDS imino disuccinic acid
  • Machine dishwash detergent (MDW) compositions comprising a builder and a mixture of surfactants are known in the art.
  • a detergent composition is described comprising a phosphate or citrate based builder and a mixed surfactant system.
  • the surfactant system contains a nonionic surfactant having a high cloud point, and a zwitterionic surfactant.
  • Such systems have the disadvantage that these can cause serious foaming in the dishwashing machine, so that the use of these is limited.
  • WOOO/50552 describes machine dishwash detergent compositions containing a builder, and a surfactant system of an oxide surfactant and a low foaming surfactant chosen from a specific group of surfactants, for stain removal and in
  • Phosphorous based builders such as phosphates, have been used for many years in a wide variety of detergent compositions.
  • Glutamic-N, N- diacetate (GLDA) , methyl-glycine diacetate (MGDA) , imino disuccinic acid (IDS) and citrate are examples of
  • amino (poly) carboxylates have the disadvantage of a reduced wash performance compared to phosphate.
  • level of degreasing and grease build-up prevention was found to be less than for phosphate based compositions.
  • machine dishwash detergent compositions are described that can contain a phosphate free builder, a low foaming nonionic surfactant, a bleach and a bleach catalyst. Summary of the invention
  • the current invention provides for a phosphate-free machine dishwash detergent composition which provides a combination of improved cleaning and/or degreasing, whilst maintaining
  • the invention thereto provides a phosphate free machine dishwash detergent composition
  • a phosphate free machine dishwash detergent composition comprising
  • nonionic surfactant of the formula R 2 - (EO) x OH, wherein R is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15, and x is between 5 and 12, preferably between 6 and 10,
  • a further nonionic surfactant different from i) , ii) , or iii) ;
  • dimethylamine oxide is in the range of 2.5-30 wt . % of the total weight amount of the non-ionic surfactant system present ;
  • the invention concerns a phosphate-free machine dishwash detergent composition as set forth in claim 1, wherein the composition further comprises a bleaching agent and a manganese complex bleach catalyst.
  • a phosphate-free machine dishwash detergent composition is proposed comprising
  • Weight percentages are calculated based upon total weight of the composition, unless indicated otherwise.
  • the quantified amount or quantified concentration relates to said component per se, even though it may be common practice to add such a component in the form of a solution or of a blend with one or more other ingredients.
  • Substantially free of means a maximum concentration of the compound concerned of 1 wt . % based on the total weight of the detergent composition.
  • Phosphate free in the context of this invention means that no phosphate is added in the preparation of the detergent
  • Machine dishwash detergent compositions according to the invention may suitably be dosed in the wash liquor at levels of from 2 g/1 to 10 g/1.
  • the invention is in particular suitable for multifunctional machine dishwash detergent compositions.
  • the detergent composition is a multifunctional machine dishwash composition.
  • compositions of the current invention at least 15 wt . % of a non-phosphate builder system is present.
  • the compositions of the invention will contain one or more amino acids
  • poly carboxylic compounds selected from methylglycine diacetic acid (MGDA) , glutamic diacetic acid (GLDA) and imino disuccinic acid (IDS) or combinations thereof. These compounds act as builders, and bind ions like magnesium and calcium.
  • amino polycarboxylic compound for solid compositions is MGDA, whereas where liquid or gel-like compositions are envisaged, GLDA is the preferred amino
  • the builder system in the composition comprises a further builder which may for example be selected from the group comprising alkali metal carbonates, bicarbonates and citric acid. It is preferred that at least 30 wt . % of the non-phosphate builder system (wt.% based on total weight of the builder system) is an amino (poly) carboxylic compound selected from MGDA, GLDA and/or IDS, and further preferred at least 45 wt.%. Where at least 50 wt.%, and up to 100 wt . % of the builder system is chosen from MGDA, GLDA, IDS or any combination thereof, the result of improvement was found to be even more pronounced .
  • a further builder which may for example be selected from the group comprising alkali metal carbonates, bicarbonates and citric acid. It is preferred that at least 30 wt . % of the non-phosphate builder system (wt.% based on total weight of the builder system) is an amino (poly) carb
  • the phosphate-free machine dishwash detergent composition of the invention preferably contains a non-phosphate builder system in amounts between 20 and 60 wt.%, more preferred between 25 and 60 wt.%, and most preferred between 30 and
  • composition of the invention contains an amount of about 30, 35 or 40 wt% of at least one
  • the form in which the MGDA and/or GLDA and/or IDS and/or their salts can be applied in the compositions can be any, such as a powder or a granule or a solution, and is suitably chosen depending in the format of the detergent composition foreseen.
  • the nonionic surfactant system is present in an amount of 0.1 up to 15% by weight, and preferably present in an amount of 0.5 up to 10% by weight, further preferred up to 0.5-8 wt.%. Even further preferred is 0.5-7 wt.%, the range of 2-7 wt.% is most preferred .
  • Cio-Cis alkyl dimethylamine oxides are present in the composition.
  • the C10-C18 alkyl dimethylamine oxides of the present invention contain are nonionic surfactants.
  • compositions wherein the detergent composition of the present invention comprises a nonionic surfactant mixture as defined in claim 1 wherein the amount of Cio _ Ci8 alkyl dimethylamine oxides present is in the range of 2.5-25 wt . % of the total amount of nonionic
  • surfactants present in the composition and preferably is in the range of 5-20 wt . % of the total amount of the surfactant system, and most preferred in the range of 7.5-15 wt . % .
  • a C14-C18 alkyl dimethylamine oxide is preferred as the amine oxide of formula i) .
  • EmpigenTM OD supplied by Huntsman
  • the amine oxides of this formula are often sold as a solution.
  • the weight amount of the amine oxide indicated is the amount of amine oxide which is present in such solution.
  • the composition should comprise an alkylpolyethylene glycol ether nonionic surfactant of the formula R 1 - (EO) x OH, wherein R 1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120.
  • R 1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120.
  • Examples of such non-end capped ethoxylated glycol ether are found in the LutensolTM AT series, supplied by BASF.
  • a third nonionic surfactant is present, said third surfactant being an alkylpolyethylene glycol ether nonionic surfactant of the formula R 2 - (EO) x OH, wherein R 2 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, and preferably between 6 and 10.
  • R 2 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, and preferably between 6 and 10.
  • Examples of such surfactants can be found in the LutensolTM TO series of BASF, which are alkylpolyethylene glycol ethers made, for example those made from a saturated iso-Ci 3 alcohol, such as LutensolTM T07.
  • surfactants of this formula are present in an amount of 0.1-12 wt.%, preferably 1-10 wt.%, further preferred 1
  • the detergent composition comprises 1.5-15 wt.%, of a surfactant system which contains
  • nonionic surfactant of the formula R 2 - (EO) x OH, wherein R 2 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, preferably between 6 and 10,
  • a Cio _ Ci 8 alkyl dimethylamine oxide ii) 2 - 5 wt.% of an alkylpolyethylene glycol ether nonionic surfactant of the formula R 1 - (EO) x OH, wherein R 1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120,
  • nonionic surfactant of the formula R 2 - (EO) x OH, wherein R is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, preferably between 6 and 10,
  • the weight amount of the Cio _ Cis alkyl dimethylamine oxide is in the range of 10-25 wt.% of the total weight amount of the surfactant system.
  • nonionic surfactants can be present. It has been found that a further improvement of performance benefits can be obtained when the composition of invention furthermore contains a nonionic surfactant of the formula R 3 - ( PO) x (EO) y -CH 2 CH (OH) - R 4 ; wherein R 3 is C 6 - Ci 5 ; R 4 is C4 - Cio, and x is an integer in the range of 0 - 10, and y is an integer in the range of 3 - 30.
  • Suitable nonionics to apply in the composition of the invention include modified fatty alcohol polyglycolethers available as Dehypon R 3697 GRA or Dehypon R Wet from BASF.
  • the total amount thereof present preferably is less than 5 wt.%, and more preferably not more than 2 wt.%, and most preferred less than 1 wt.%.
  • an antifoam agent to suppress foaming is
  • the present composition suitably comprises a bleach compound, which can be a chlorine-, or bromine-releasing agent or a peroxygen compound.
  • the bleach compound is a peroxygen compound selected from hydrogen peroxide, hydrogen peroxide-liberating compounds, hydrogen peroxide-generating compounds, as well as the organic and inorganic peroxyacids and water-soluble salts thereof, and mixtures thereof.
  • peroxides and corresponding salts examples include
  • the total amount of peroxygen bleach compound (s) is preferably from 5% to 25%, more preferably from 10% to 20% by weight of the composition.
  • Organic peracids useful herein include alkyl peroxy acids and aryl peroxyacids such as peroxybenzoic acid and ring-substituted peroxybenzoic acids (e.g. peroxy-alpha- naphthoic acid) , aliphatic and substituted aliphatic monoperoxy acids (e.g. peroxylauric acid and peroxystearic acid), and phthaloyl amido peroxy caproic acid (PAP) .
  • peroxybenzoic acid and ring-substituted peroxybenzoic acids e.g. peroxy-alpha- naphthoic acid
  • aliphatic and substituted aliphatic monoperoxy acids e.g. peroxylauric acid and peroxystearic acid
  • PAP phthaloyl amido peroxy caproic acid
  • diperoxy acids useful herein include alkyl diperoxy acids and aryldiperoxy acids, such as 1 , 12-di-peroxy- dodecanedioic acid (DPDA) , 1 , 9-diperoxyazelaic acid,
  • diperoxybrassylic acid diperoxysebacic acid and diperoxy- isophthalic acid
  • 2-decyldiperoxybutane-l 2-dioic acid
  • bleaching agents may be utilised alone or in conjunction with a peroxyacid bleach activator.
  • the detergent composition may contain one or more bleach activators such as peroxyacid bleach precursors.
  • Peroxyacid bleach precursors are well known in the art. As non-limiting examples can be named N, , ' , ' -tetraacetyl ethylene diamine (TAED) , sodium nonanoyloxybenzene sulphonate (SNOBS) , sodium benzoyloxybenzene sulphonate (SBOBS) and the cationic
  • TAED sodium nonanoyloxybenzene sulphonate
  • SBOBS sodium benzoyloxybenzene sulphonate
  • SPCC peroxyacid precursor
  • a bleach catalyst such as a manganese complex, e.g. Mn-Me TACN, as described in EP-A-0458397, or the
  • This bleach catalyst may suitably be present in the composition in the form of an encapsulate, notably an encapsulate that is separate from the bleach particles (to avoid premature bleach activation) .
  • the presence of such a manganese complex catalyst can significantly improve the cleaning performance of the detergent composition of the invention and is therefore highly preferred.
  • bleaching agent such as percarbonate
  • percarbonate is a preferred embodiment for the current invention.
  • enzymes can be present in the composition if the invention. It is preferred that both a bleaching agent and enzymes are present. Examples of enzymes suitable for use in the cleaning
  • compositions of this invention include lipases, cellulases, peroxidases, proteases (proteolytic enzymes) , amylases
  • proteases amylases, cellulases, peroxidases, mannanases, pectate lyases and lipases and combinations thereof.
  • the enzymes most commonly used in detergent compositions are proteolytic and amylolytic enzymes.
  • Enzymes may be added in liquid or in encapsulated form.
  • the enzymes are present in encapsulated form.
  • Well know enzyme stabilizers such as polyalcohols/borax, calcium, formate or protease inhibitors like 4-formylphenyl boronic acid may also be present in the composition
  • the proteolytic enzymes in this invention include metalloproteases and serine proteases, including neutral or alkaline microbial serine protease, such as subtilisins (EC 3.4.21.62) .
  • the proteolytic enzymes for use in the present invention can be those derived from bacteria of fungi.
  • Preferred proteolytic enzymes are those derived from Bacillus, such as B. lentus, B. gibsonii , B. subtilis, B.
  • Bacillus pumilus of which B. lentus and B. gibsonii are most preferred.
  • proteolytic enzymes are ExcellaseTM, ProperaseTM, PurafectTM, PurafectTM Prime, PurafectTM Ox by
  • Preferred levels of protease in the present composition are from 0.1 to 10, more preferably from 0.2 to 5, most preferably 0.4 to about 4 mg active protease per gram of composition.
  • amylolytic enzymes for use in the present invention can be those derived from bacteria or fungi. Chemically or
  • Preferred amylolytic enzyme is an alpha-amylase derived from a strain of Bacillus, such as B. subtilis, B. licheniformis, B.. amyloliquefaciens or B. stearothermophilus .
  • Examples of such amylolytic enzymes are produced and distributed under the trade name of StainzymeTM, StainzymeTM Plus, TermamylTM, NatalaseTM and DuramylTM by Novozymes; as well as PoweraseTM, PurastarTM,
  • StainzymeTM, StainzymeTM Plus and PoweraseTM are the preferred amylases.
  • Preferred levels of amylase in the present composition are from 0.01 to 5, more preferably from 0.02 to 2, most preferably from 0.05 to about 1 mg active amylase per gram of composition.
  • the enzymes may suitably be incorporated in the detergent composition in liquid or in encapsulated form. In case the composition has a pH of 9.0 and more it is preferred to employ enzymes in encapsulated form.
  • Examples of encapsulated forms are enzyme granule types D, E and HS by Genencor/DUPONT and granule types T, GT, TXT and EvityTM of Novozymes.
  • Buffering agents may be used in compositions according to the present invention in order to adjust and to maintain the alkalinity and pH at the desired level. These are for example, the alkali metal carbonates and bicarbonates , sometimes also borates, and silicates.
  • Silicates may be added to the formulation.
  • Silicates can act as builder, buffering agent or article care agent.
  • Preferred silicates are sodium silicate such as sodium disilicate, sodium metasilicate and crystalline phyllosilicates and mixtures thereof.
  • the sodium silicates used preferably have a 2 0:Si0 2 ratios of from about 2 : 1 to 1:4.
  • Silicates are preferably used in the detergent composition in a concentration of 1 to 20%, more preferably of 2 to 10% by weight of the composition.
  • detergent composition furthermore comprises at least one dispersing polymer.
  • Dispersing polymers as referred to in this invention are chosen from the group of anti-spotting agents and/or anti-scaling agents.
  • suitable anti-spotting polymeric agents include hydrophobically modified polycarboxylic acids such as AcusolTM 460 ND (ex Dow) and AlcosperseTM 747 by AkzoNobel, whereas also synthetic clays, and preferably those synthetic clays which have a high surface area are very useful to prevent spots, in particular those formed where soil and dispersed remnants are present at places where the water collects on the glass and spots formed when the water subsequently evaporates.
  • anti-scaling agents examples include organic phosphonates , amino carboxylates , polyfunctionally-substituted compounds, and mixtures thereof.
  • Most preferred is hydroxy-ethylene 1,1- diphosphonate (EDHP) and 2-phosphono-butane, 1,2,4- tricarboxylic acid (Bayhibit ex Bayer) .
  • Suitable anti-scaling agents are water soluble dispersing polymers prepared from an allyloxybenzenesulfonic acid monomer, a methallyl sulfonic acid monomer, a copolymerizable nonionic monomer and a copolymerizable olefinically unsaturated
  • methacrylate, sodium methallyl sulphonate and sulphophenol methallyl ether such as AlcosperseTM 240 supplied (AkzoNobel) .
  • a terpolymer containing polyacrylate with 2- acrylamido-2 methylpropane sulphonic acid such as Acumer 3100 supplied by Dow.
  • polymers and co-polymers of acrylic acid having a molecular weight between 500 and 20,000 can also be used, such as homo-polymeric polycarboxylic acid compounds with acrylic acid as the monomeric unit.
  • the average weight of such homo-polymers in the acid form preferably ranges from 1,000 to 100,000 particularly from 3,000 to 10,000 e.g. SokolanTM PA 25 from BASF or AcusolTM 425 from Dow.
  • polycarboxylates co-polymers derived from monomers of acrylic acid and maleic acid such as CP 5 from BASF.
  • the average molecular weight of these polymers in the acid form preferably ranges from 4,000 to 70,000.
  • Modified polycarboxylates like SokalanTMCP42 , SokalanTM CP50 from BASF or AlcoguardTM 4160 from AkzoNobel may also be used.
  • Mixture of anti-scaling agents may also be used. Particularly useful is a mixture of organic phosphonates and polymers of acrylic acid.
  • the level of dispersing polymers ranges from 0.2 to 10 wt . % of the total composition, preferably from 0.5 to 8 wt.%, and further preferred from 1 to 6 wt . % .
  • the claimed composition may suitably contain glass corrosion inhibitors.
  • suitable glass corrosion agents can be selected from the group consisting of salts of zinc, bismuth, aluminum, tin, magnesium, calcium, strontium, titanium, zirconium, manganese, lanthanum, mixtures thereof and
  • Preferred levels of glass corrosion inhibitors in the present composition are 0.01- 2 wt.%, more preferably 0.01-0.5 wt . % .
  • compositions such as perfume, colorant or preservatives.
  • compositions of the present invention may be in any suitable physical form, for example powdered and/or granular
  • the detergent may be, and preferably is a unit dose, such as a tablet or a single dose pouch or sachet containing the detergent. These can be a single or multi-compartment pouch or sachet.
  • At least part of the composition is in the form of the liquid or gel, and the composition comprises 15 - 70 wt% of a non-phosphate containing builder system comprising GLDA.
  • Machine dishwash detergent compositions according to the invention may suitably be dosed at levels of 5 to 40 grams per wash, more preferably at 10 to 30 grams per wash.
  • the machine dishwashing composition is a mildly alkaline product having a solution pH below 12, e.g. from 7-12, preferably from 9-11.
  • the solution pH as meant here is the pH as determined from a solution of 3 g/1 of the compositions in distilled water at 20°C.

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Abstract

The present invention concerns a machine dishwash detergent composition comprising an amino polycarboxylic compound such methylglycine diacetic acid (MGDA), glutamic diacetic acid (GLDA) and imino disuccinic acid (IDS), and at least two different nonionic surfactants.

Description

MACHINE DISHWASH DETERGENT COMPOSITION Technical field of the invention
The present invention is in the field of a machine dishwash detergent composition comprising an amino (poly) carboxylic compound such as methylglycine diacetic acid (MGDA) , glutamic diacetic acid (GLDA) and imino disuccinic acid (IDS), and at least two different nonionic surfactants. Background to the invention
Machine dishwash detergent (MDW) compositions comprising a builder and a mixture of surfactants are known in the art. In WO98/11190 a detergent composition is described comprising a phosphate or citrate based builder and a mixed surfactant system. The surfactant system contains a nonionic surfactant having a high cloud point, and a zwitterionic surfactant. Such systems have the disadvantage that these can cause serious foaming in the dishwashing machine, so that the use of these is limited. WOOO/50552 describes machine dishwash detergent compositions containing a builder, and a surfactant system of an oxide surfactant and a low foaming surfactant chosen from a specific group of surfactants, for stain removal and in
particular reduction of red sauce.
Phosphorous based builders, such as phosphates, have been used for many years in a wide variety of detergent compositions.
However, as part of an increasing trend towards environmentally friendly detergent compositions, alternative building agents have been developed and these alternative builders have found their way into commercial detergent products. Glutamic-N, N- diacetate (GLDA) , methyl-glycine diacetate (MGDA) , imino disuccinic acid (IDS) and citrate are examples of
environmentally friendly builders that are used in commercial detergent products. Unfortunately, in use in machine dish detergents, amino (poly) carboxylates have the disadvantage of a reduced wash performance compared to phosphate. In particular the level of degreasing and grease build-up prevention was found to be less than for phosphate based compositions.
In EP 1741774, machine dishwash detergent compositions are described that can contain a phosphate free builder, a low foaming nonionic surfactant, a bleach and a bleach catalyst. Summary of the invention
The current invention provides for a phosphate-free machine dishwash detergent composition which provides a combination of improved cleaning and/or degreasing, whilst maintaining
spotting and filming performance. Also, the disadvantages connected with the systems described above are reduced or no longer present.
In one embodiment, the invention thereto provides a phosphate free machine dishwash detergent composition comprising
a) 15 - 70 wt% of a non-phosphate containing builder system comprising at least one of MGDA, GLDA and IDS, and
preferably 20-60 wt . % of such a builder system, and more preferred 25-60 wt . % of such a builder system;
b) 0.1-15 wt . % of a nonionic surfactant system comprising
i) a Cio-Cis alkyl dimethylamine oxide,
ii) an alkylpolyethylene glycol ether nonionic surfactant of the formula R1 - (EO)x OH, wherein R1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120,
iii) optionally, an alkylpolyethylene glycol ether
nonionic surfactant of the formula R2 - (EO)x OH, wherein R is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15, and x is between 5 and 12, preferably between 6 and 10,
iv) optionally, a further nonionic surfactant different from i) , ii) , or iii) ;
wherein the weight amount of the Cio_Ci8 alkyl
dimethylamine oxide is in the range of 2.5-30 wt . % of the total weight amount of the non-ionic surfactant system present ;
at least one of a bleaching agent or enzymes.
Further improved cleaning benefits have been found when the above composition comprises an oxygen bleach and also a
manganese complex bleach catalyst. The presence of a catalyst containing manganese was found to provide a significant
improvement in cleaning, in particular in the removal of stains such as tea stains. Cleaning benefits are furthermore obtained when a bleach precursor is present in the composition.
Accordingly, in its second embodiment, the invention concerns a phosphate-free machine dishwash detergent composition as set forth in claim 1, wherein the composition further comprises a bleaching agent and a manganese complex bleach catalyst. In a further embodiment, a phosphate-free machine dishwash detergent composition is proposed comprising
a) 15 - 70 wt . % of a non-phosphate containing builder system comprising at least one of MGDA, GLDA and IDS, wherein at least 30 wt . % of the non-phosphate builder system (wt.% based on total weight of the builder system) is an amino
(poly) carboxylic compound selected from MGDA, GLDA and/or IDS, b) 0.1-15 wt . % of a nonionic surfactant system as indicated above,
c) a bleaching agent and
d) a manganese complex bleach catalyst.
Definitions
Weight percentages (indicated as xwt.%') herein are calculated based upon total weight of the composition, unless indicated otherwise.
Whenever an amount or concentration of a component is
quantified herein, unless indicated otherwise, the quantified amount or quantified concentration relates to said component per se, even though it may be common practice to add such a component in the form of a solution or of a blend with one or more other ingredients.
In the context of this invention, Substantially free of means a maximum concentration of the compound concerned of 1 wt . % based on the total weight of the detergent composition.
Phosphate free in the context of this invention means that no phosphate is added in the preparation of the detergent
composition .
At the instances in this specification where reference is made to amino (poly) carboxylic acids the corresponding salts are meant to be included as well. The amounts mentioned in this specification are based on the recommended amount of detergent composition used per main wash cycle. Machine dishwash detergent compositions according to the invention may suitably be dosed in the wash liquor at levels of from 2 g/1 to 10 g/1.
The invention is in particular suitable for multifunctional machine dishwash detergent compositions.
However, also benefits can be achieved by applying the
invention to a detergent composition in which a separate rinse aid is used in the final steps of the dishwashing process.
In a preferred embodiment the detergent composition is a multifunctional machine dishwash composition.
Detailed description of the invention
Builder
In the compositions of the current invention at least 15 wt . % of a non-phosphate builder system is present. The compositions of the invention will contain one or more amino
(poly) carboxylic compounds selected from methylglycine diacetic acid (MGDA) , glutamic diacetic acid (GLDA) and imino disuccinic acid (IDS) or combinations thereof. These compounds act as builders, and bind ions like magnesium and calcium.
The most preferred type of amino polycarboxylic compound for solid compositions is MGDA, whereas where liquid or gel-like compositions are envisaged, GLDA is the preferred amino
polycarboxylic compound used.
Optionally the builder system in the composition comprises a further builder which may for example be selected from the group comprising alkali metal carbonates, bicarbonates and citric acid. It is preferred that at least 30 wt . % of the non-phosphate builder system (wt.% based on total weight of the builder system) is an amino (poly) carboxylic compound selected from MGDA, GLDA and/or IDS, and further preferred at least 45 wt.%. Where at least 50 wt.%, and up to 100 wt . % of the builder system is chosen from MGDA, GLDA, IDS or any combination thereof, the result of improvement was found to be even more pronounced .
The phosphate-free machine dishwash detergent composition of the invention preferably contains a non-phosphate builder system in amounts between 20 and 60 wt.%, more preferred between 25 and 60 wt.%, and most preferred between 30 and
45 wt.%. Where the composition of the invention contains an amount of about 30, 35 or 40 wt% of at least one
(poly) carboxylic compound from the group of MGDA, GLDA and IDS, this was found to lead to good results on all aspects in the detergent composition of the current invention. MGDA and GLDA or combinations thereof are preferred.
The form in which the MGDA and/or GLDA and/or IDS and/or their salts can be applied in the compositions can be any, such as a powder or a granule or a solution, and is suitably chosen depending in the format of the detergent composition foreseen.
Surfactant
The nonionic surfactant system is present in an amount of 0.1 up to 15% by weight, and preferably present in an amount of 0.5 up to 10% by weight, further preferred up to 0.5-8 wt.%. Even further preferred is 0.5-7 wt.%, the range of 2-7 wt.% is most preferred .
Good cleaning and improved degreasing while also obtaining optimal handling is found when 0.05-2 wt.% and preferably 0.1- 1.8 wt.%, further preferred 0.2-1 wt.%, of the group of Cio-Cis alkyl dimethylamine oxides is present in the composition. The C10-C18 alkyl dimethylamine oxides of the present invention contain are nonionic surfactants.
A preferred embodiment is found for compositions wherein the detergent composition of the present invention comprises a nonionic surfactant mixture as defined in claim 1 wherein the amount of Cio_Ci8 alkyl dimethylamine oxides present is in the range of 2.5-25 wt . % of the total amount of nonionic
surfactants present in the composition, and preferably is in the range of 5-20 wt . % of the total amount of the surfactant system, and most preferred in the range of 7.5-15 wt . % .
In particular, a C14-C18 alkyl dimethylamine oxide is preferred as the amine oxide of formula i) . For example, Empigenâ„¢ OD (supplied by Huntsman) is a suitable amine oxide for use in the present invention.
The amine oxides of this formula are often sold as a solution. In this specification, the weight amount of the amine oxide indicated is the amount of amine oxide which is present in such solution.
The composition should comprise an alkylpolyethylene glycol ether nonionic surfactant of the formula R1 - (EO)x OH, wherein R1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120. Examples of such non-end capped ethoxylated glycol ether are found in the Lutensolâ„¢ AT series, supplied by BASF.
These alkylpolyethylene glycol ethers surfactants are
preferably present in an amount of 1.2-6 wt . % of the total detergent composition, and preferably in an amount of 2-5 wt.%, and further preferred 2.5-5 wt . % .
Optionally, a third nonionic surfactant is present, said third surfactant being an alkylpolyethylene glycol ether nonionic surfactant of the formula R2 - (EO)x OH, wherein R2 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, and preferably between 6 and 10. Examples of such surfactants can be found in the Lutensolâ„¢ TO series of BASF, which are alkylpolyethylene glycol ethers made, for example those made from a saturated iso-Ci3 alcohol, such as Lutensolâ„¢ T07. Suitably, surfactants of this formula are present in an amount of 0.1-12 wt.%, preferably 1-10 wt.%, further preferred 1-8 wt.%, and most preferred 2-6 wt.%.
In a preferred embodiment of the invention, the detergent composition comprises 1.5-15 wt.%, of a surfactant system which contains
i) 0.05 - 2 wt . % of a Cio_Cis alkyl dimethylamine oxide, ii) 1.2 - 6 wt.% of an alkylpolyethylene glycol ether nonionic surfactant of the formula R1 - (EO)x OH, wherein R1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120,
iii) 0.1 - 12 wt.% of an alkylpolyethylene glycol ether
nonionic surfactant of the formula R2 - (EO)x OH, wherein R2 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, preferably between 6 and 10,
iv) and optionally, a further nonionic surfactant different from any of the nonionics of formula i) , ii) , or iii) . A further preferred surfactant system in this invention
comprises 2-10 wt . % of a nonionic surfactant system which contains
i) 0.1 - 1 wt.% of a Cio_Ci8 alkyl dimethylamine oxide, ii) 2 - 5 wt.% of an alkylpolyethylene glycol ether nonionic surfactant of the formula R1 - (EO)x OH, wherein R1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120,
iii) 0.5 - 5 wt . % of an alkylpolyethylene glycol ether
nonionic surfactant of the formula R2 - (EO)x OH, wherein R is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, preferably between 6 and 10,
iv) and optionally, a further nonionic surfactant different from any of the nonionics of formula i) , ii) , or iii) . Particular good results with respect to cleaning, degreasing, prevention of spotting and filming, and low foaming during the wash can be obtained when in this detergent composition
The weight amount of the Cio_Cis alkyl dimethylamine oxide is in the range of 10-25 wt.% of the total weight amount of the surfactant system.
In addition to the non-end capped ethoxylated glycol ethers and amine oxides indicated above, further nonionic surfactants can be present. It has been found that a further improvement of performance benefits can be obtained when the composition of invention furthermore contains a nonionic surfactant of the formula R3- ( PO) x (EO) y-CH2CH (OH) - R4; wherein R3 is C6 - Ci5; R4 is C4 - Cio, and x is an integer in the range of 0 - 10, and y is an integer in the range of 3 - 30. Suitable nonionics to apply in the composition of the invention include modified fatty alcohol polyglycolethers available as DehyponR 3697 GRA or DehyponR Wet from BASF.
If an anionic surfactant is used, the total amount thereof present preferably is less than 5 wt.%, and more preferably not more than 2 wt.%, and most preferred less than 1 wt.%.
Furthermore, if an anionic surfactant is present, it is
preferred that an antifoam agent to suppress foaming is
present. Examples of suitable anionic surfactants are
methylester sulphonates or sodium lauryl sulphate. Bleach
The present composition suitably comprises a bleach compound, which can be a chlorine-, or bromine-releasing agent or a peroxygen compound. Preferably, the bleach compound is a peroxygen compound selected from hydrogen peroxide, hydrogen peroxide-liberating compounds, hydrogen peroxide-generating compounds, as well as the organic and inorganic peroxyacids and water-soluble salts thereof, and mixtures thereof.
Examples of peroxides and corresponding salts include
monopersulphate, perborate monohydrate, perborate tetrahydrate, and percarbonate . Percarbonate is highly preferred.
The total amount of peroxygen bleach compound (s) is preferably from 5% to 25%, more preferably from 10% to 20% by weight of the composition. Organic peracids useful herein include alkyl peroxy acids and aryl peroxyacids such as peroxybenzoic acid and ring-substituted peroxybenzoic acids (e.g. peroxy-alpha- naphthoic acid) , aliphatic and substituted aliphatic monoperoxy acids (e.g. peroxylauric acid and peroxystearic acid), and phthaloyl amido peroxy caproic acid (PAP) .
Typical diperoxy acids useful herein include alkyl diperoxy acids and aryldiperoxy acids, such as 1 , 12-di-peroxy- dodecanedioic acid (DPDA) , 1 , 9-diperoxyazelaic acid,
diperoxybrassylic acid, diperoxysebacic acid and diperoxy- isophthalic acid, and 2-decyldiperoxybutane-l , 4-dioic acid.
These bleaching agents may be utilised alone or in conjunction with a peroxyacid bleach activator.
Bleach activator
The detergent composition may contain one or more bleach activators such as peroxyacid bleach precursors. Peroxyacid bleach precursors are well known in the art. As non-limiting examples can be named N, , ' , ' -tetraacetyl ethylene diamine (TAED) , sodium nonanoyloxybenzene sulphonate (SNOBS) , sodium benzoyloxybenzene sulphonate (SBOBS) and the cationic
peroxyacid precursor (SPCC) as described in US-A-4, 751, 015.
Bleach catalyst
If desirable, a bleach catalyst, such as a manganese complex, e.g. Mn-Me TACN, as described in EP-A-0458397, or the
sulphonimines of US-A-5, 041, 232 and US-A-5, 047, 163, can be incorporated .
This bleach catalyst may suitably be present in the composition in the form of an encapsulate, notably an encapsulate that is separate from the bleach particles (to avoid premature bleach activation) . The presence of such a manganese complex catalyst can significantly improve the cleaning performance of the detergent composition of the invention and is therefore highly preferred. The presence thereof, in combination with a
bleaching agent such as percarbonate, is a preferred embodiment for the current invention.
Enzymes
As an alternative to the presence of a bleaching agent, enzymes can be present in the composition if the invention. It is preferred that both a bleaching agent and enzymes are present. Examples of enzymes suitable for use in the cleaning
compositions of this invention include lipases, cellulases, peroxidases, proteases (proteolytic enzymes) , amylases
(amylolytic enzymes) and others which degrade, alter or
facilitate the degradation or alteration of biochemical soils and stains encountered in cleansing situations so as to remove more easily the soil or stain from the object being washed to make the soil or stain more removable in a subsequent cleansing step. Both degradation and alteration can improve soil removal. Well-known and preferred examples of these enzymes are
proteases, amylases, cellulases, peroxidases, mannanases, pectate lyases and lipases and combinations thereof. The enzymes most commonly used in detergent compositions are proteolytic and amylolytic enzymes.
Enzymes may be added in liquid or in encapsulated form. In a preferred embodiment of this invention the enzymes are present in encapsulated form. Well know enzyme stabilizers such as polyalcohols/borax, calcium, formate or protease inhibitors like 4-formylphenyl boronic acid may also be present in the composition The proteolytic enzymes in this invention include metalloproteases and serine proteases, including neutral or alkaline microbial serine protease, such as subtilisins (EC 3.4.21.62) . The proteolytic enzymes for use in the present invention can be those derived from bacteria of fungi.
Chemically or genetically modified mutants (variants) are included. Preferred proteolytic enzymes are those derived from Bacillus, such as B. lentus, B. gibsonii , B. subtilis, B.
lichen!formis, B. alkalophilus, B. amyloliquefaciens and
Bacillus pumilus, of which B. lentus and B. gibsonii are most preferred. Examples of such proteolytic enzymes are Excellaseâ„¢, Properaseâ„¢, Purafectâ„¢, Purafectâ„¢ Prime, Purafectâ„¢ Ox by
Genencor/DUPON ; and those sold under the trade names
Blazeâ„¢, Ovozymeâ„¢, Savinaseâ„¢, Alcalaseâ„¢, Everlaseâ„¢, Esperaseâ„¢, Relaseâ„¢, Polarzymeâ„¢, Liquinaseâ„¢ and Coronaseâ„¢ by Novozymes.
Preferred levels of protease in the present composition are from 0.1 to 10, more preferably from 0.2 to 5, most preferably 0.4 to about 4 mg active protease per gram of composition.
The amylolytic enzymes for use in the present invention can be those derived from bacteria or fungi. Chemically or
genetically modified mutants (variants) are included.
Preferred amylolytic enzyme is an alpha-amylase derived from a strain of Bacillus, such as B. subtilis, B. licheniformis, B.. amyloliquefaciens or B. stearothermophilus . Examples of such amylolytic enzymes are produced and distributed under the trade name of Stainzymeâ„¢, Stainzymeâ„¢ Plus, Termamylâ„¢, Natalaseâ„¢ and Duramylâ„¢ by Novozymes; as well as Poweraseâ„¢, Purastarâ„¢,
Purastarâ„¢ Oxam by Genencor/DUPONT. Stainzymeâ„¢, Stainzymeâ„¢ Plus and Poweraseâ„¢ are the preferred amylases. Preferred levels of amylase in the present composition are from 0.01 to 5, more preferably from 0.02 to 2, most preferably from 0.05 to about 1 mg active amylase per gram of composition. The enzymes may suitably be incorporated in the detergent composition in liquid or in encapsulated form. In case the composition has a pH of 9.0 and more it is preferred to employ enzymes in encapsulated form.
Examples of encapsulated forms are enzyme granule types D, E and HS by Genencor/DUPONT and granule types T, GT, TXT and Evityâ„¢ of Novozymes.
Buffering Agent
Buffering agents may be used in compositions according to the present invention in order to adjust and to maintain the alkalinity and pH at the desired level. These are for example, the alkali metal carbonates and bicarbonates , sometimes also borates, and silicates.
Silicates
Silicates may be added to the formulation. Silicates can act as builder, buffering agent or article care agent. Preferred silicates are sodium silicate such as sodium disilicate, sodium metasilicate and crystalline phyllosilicates and mixtures thereof. The sodium silicates used preferably have a20:Si02 ratios of from about 2 : 1 to 1:4. Silicates are preferably used in the detergent composition in a concentration of 1 to 20%, more preferably of 2 to 10% by weight of the composition.
Dispersing polymers
In a preferred embodiment of the current invention, the
detergent composition furthermore comprises at least one dispersing polymer. Dispersing polymers as referred to in this invention are chosen from the group of anti-spotting agents and/or anti-scaling agents. Examples of suitable anti-spotting polymeric agents include hydrophobically modified polycarboxylic acids such as Acusolâ„¢ 460 ND (ex Dow) and Alcosperseâ„¢ 747 by AkzoNobel, whereas also synthetic clays, and preferably those synthetic clays which have a high surface area are very useful to prevent spots, in particular those formed where soil and dispersed remnants are present at places where the water collects on the glass and spots formed when the water subsequently evaporates.
Examples of suitable anti-scaling agents include organic phosphonates , amino carboxylates , polyfunctionally-substituted compounds, and mixtures thereof. Particularly preferred anti- scaling agents are organic phosphonates such as â– =>-hydroxy-2 phenyl ethyl diphosphonate, ethylene diphosphonate, hydroxy 1 , 1-hexylidene, vinylidene 1 , 1-diphosphonate, 1,2- dihydroxyethane 1 , 1-diphosphonate and hydroxy-ethylene 1,1- diphosphonate . Most preferred is hydroxy-ethylene 1,1- diphosphonate (EDHP) and 2-phosphono-butane, 1,2,4- tricarboxylic acid (Bayhibit ex Bayer) .
Suitable anti-scaling agents are water soluble dispersing polymers prepared from an allyloxybenzenesulfonic acid monomer, a methallyl sulfonic acid monomer, a copolymerizable nonionic monomer and a copolymerizable olefinically unsaturated
carboxylic acid monomer as described in US 5 547 612 or known as acrylic sulphonated polymers as described in EP 851 022. Polymers of this type include polyacrylate with methyl
methacrylate, sodium methallyl sulphonate and sulphophenol methallyl ether such as Alcosperseâ„¢ 240 supplied (AkzoNobel) . Also suitable is a terpolymer containing polyacrylate with 2- acrylamido-2 methylpropane sulphonic acid such as Acumer 3100 supplied by Dow. As an alternative, polymers and co-polymers of acrylic acid having a molecular weight between 500 and 20,000 can also be used, such as homo-polymeric polycarboxylic acid compounds with acrylic acid as the monomeric unit. The average weight of such homo-polymers in the acid form preferably ranges from 1,000 to 100,000 particularly from 3,000 to 10,000 e.g. Sokolanâ„¢ PA 25 from BASF or Acusolâ„¢ 425 from Dow.
Also suitable are polycarboxylates co-polymers derived from monomers of acrylic acid and maleic acid, such as CP 5 from BASF. The average molecular weight of these polymers in the acid form preferably ranges from 4,000 to 70,000. Modified polycarboxylates like Sokalanâ„¢CP42 , Sokalanâ„¢ CP50 from BASF or Alcoguardâ„¢ 4160 from AkzoNobel may also be used. Mixture of anti-scaling agents may also be used. Particularly useful is a mixture of organic phosphonates and polymers of acrylic acid.
It is preferred that the level of dispersing polymers ranges from 0.2 to 10 wt . % of the total composition, preferably from 0.5 to 8 wt.%, and further preferred from 1 to 6 wt . % .
Optional Other Ingredients
Glass corrosion inhibitors can prevent the irreversible
corrosion and iridescence of glass surfaces in machine dishwash detergents. The claimed composition may suitably contain glass corrosion inhibitors. Suitable glass corrosion agents can be selected from the group consisting of salts of zinc, bismuth, aluminum, tin, magnesium, calcium, strontium, titanium, zirconium, manganese, lanthanum, mixtures thereof and
precursors thereof. Most preferred are salts of bismuth, magnesium or zinc or combinations thereof. Preferred levels of glass corrosion inhibitors in the present composition are 0.01- 2 wt.%, more preferably 0.01-0.5 wt . % .
Anti-tarnishing agents may prevent or reduce the tarnishing, corrosion or oxidation of metals such as silver, copper, aluminium and stainless steel. Anti-tarnishing agents such as benzotriazole or bis-benzotriazole and substituted derivatives thereof and those described in EP 723 577 (Unilever) may also be included in the composition. Other anti-tarnishing agents that may be included in the detergent composition are mentioned in WO 94/26860 and WO 94/26859. Suitable redox active agents are for example complexes chosen from the group of cerium, cobalt, hafnium, gallium, manganese, titanium, vanadium, zinc or zirconium, in which the metal are in the oxidation state of II, II, IV V or VI .
Optionally other components may be added to the formulation such as perfume, colorant or preservatives.
Format
Compositions of the present invention may be in any suitable physical form, for example powdered and/or granular
compositions, pearls, tablets, liquids, gels, or combinations thereof. For the convenience of the consumer, the detergent may be, and preferably is a unit dose, such as a tablet or a single dose pouch or sachet containing the detergent. These can be a single or multi-compartment pouch or sachet.
In a particular embodiment of the invention, at least part of the composition is in the form of the liquid or gel, and the composition comprises 15 - 70 wt% of a non-phosphate containing builder system comprising GLDA. Machine dishwash detergent compositions according to the invention may suitably be dosed at levels of 5 to 40 grams per wash, more preferably at 10 to 30 grams per wash. Preferably, the machine dishwashing composition is a mildly alkaline product having a solution pH below 12, e.g. from 7-12, preferably from 9-11. The solution pH as meant here is the pH as determined from a solution of 3 g/1 of the compositions in distilled water at 20°C.

Claims

Claims
1. A phosphate-free machine dishwash detergent composition
comprising
a) 15 - 70 wt% of a non-phosphate containing builder system comprising at least one of MGDA, GLDA and IDS, and
prefarably 20-60 wt . % of such a builder system, and more preferred 25-60 wt . % of such a builder system;
b) 0.1-15 wt . % of a nonionic surfactant system comprising
i) a C10-C18 alkyl dimethylamine oxide,
ii) an alkylpolyethylene glycol ether nonionic surfactant of the formula R1 - (EO)x OH, wherein R1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120,
iii) optionally, an alkylpolyethylene glycol ether
nonionic surfactant of the formula R2 - (EO)x OH, wherein R2 is a linear or branched alkyl group
containing between 10 to about 18 carbon atoms and preferably between 11-15, and x is between 5 and 12, preferably between 6 and 10,
iv) optionally, a further nonionic surfactant different from i) , ii) , or iii) ;
wherein the weight amount of the Cio_Cis alkyl dimethylamine oxide is in the range of 2.5-30 wt . % of the total weight amount of the non-ionic surfactant system present;
c) at least one of a bleaching agent or enzymes.
2. A phosphate-free machine dishwash detergent composition
according to claim 1, wherein the composition comprises a bleaching agent and a manganese complex bleach catalyst.
3. A phosphate-free machine dishwash detergent composition according to any one of claims 1 or 2, wherein at least 30 wt . % of the non-phosphate builder system (wt.% based on total weight of the builder system) is an amino
(poly) carboxylic compound selected from MGDA, GLDA and/or IDS .
4. A phosphate-free machine dishwash detergent composition
according to any one of the preceeding claims,
characterized in that the composition comprises 0.05-2 wt.% of the group of Ci o _ Ci s alkyl dimethylamine oxide nonionic surfactant .
5. A phosphate-free machine dishwash detergent composition
according to any one of the preceeding claims,
characterized in that the Ci o - Ci s alkyl dimethylamine oxide is chosen from the group of C14-C18 alkyl dimethylamine oxide .
6. A phosphate-free machine dishwash detergent composition
according to any one of the preceeding claims,
characterized in that the amount of Ci o - Ci s alkyl
dimethylamine oxides present is in the range of 5-20 wt.% of the total weight amount of the surfactant system.
7. A phosphate-free machine dishwash detergent composition
according to any one of the preceeding claims,
characterized in that the composition comprises 1.5-15 wt.% of a surfactant system containing
i) 0.05 - 2 wt . % of a Ci o _ Ci s alkyl dimethylamine oxide, ii) 1.2 - 6 wt.% of an alkylpolyethylene glycol ether nonionic surfactant of the formula R1 - (EO)x OH, wherein R1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120,
iii) 0.1 - 12 wt . % of an alkylpolyethylene glycol ether nonionic surfactant of the formula R2 - (EO)x OH, wherein R2 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, preferably between 6 and 10, and optionally, a further nonionic surfactant different from any of the nonionics of formula i) , ii) or iii) .
8. A phosphate-free machine dishwash detergent composition according to any one of the preceeding claims,
characterized in that the composition comprises 2-10 wt . % of a nonionic surfactant system which contains
i) 0.1 - 1 wt.% of a Cio-Cis alkyl dimethylamine oxide, ii) 2 - 5 wt.% of an alkylpolyethylene glycol ether
nonionic surfactant of the formula R1 - (EO) x OH, wherein R1 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and x is an integer between 20 and 180, preferably between 25 and 120,
iii) 0.5 - 5 wt.% of an alkylpolyethylene glycol ether nonionic surfactant of the formula R2 - (EO) x OH, wherein R2 is a linear or branched alkyl group containing between 10 to about 18 carbon atoms and preferably between 11-15 carbon atoms, and x is between 5 and 12, preferably between 6 and 10, and optionally, a further nonionic surfactant different from any of the nonionics of formula i) , ii) , or iii) .
9. A phosphate-free machine dishwash detergent composition according to any one of claims 1-8, characterized in that the the composition comprises 30 wt% of at least one of MGDA, GLDA and IDS.
10. A phosphate-free machine dishwash detergent composition according to claim 3, wherein at least part of the composition is in the form of the liquid or gel, and composition comprises 15 - 70 wt% of a non-phosphate containing builder system comprising GLDA.
11. A phosphate-free machine dishwash detergent composition according to claim 8, wherein the composition further comprises enzymes.
EP14724433.9A 2013-05-17 2014-05-15 Machine dishwash detergent composition Active EP2997121B1 (en)

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EP3050952A1 (en) * 2015-02-02 2016-08-03 The Procter and Gamble Company Method of dishwashing
EP3050953B1 (en) 2015-02-02 2018-12-26 The Procter and Gamble Company Detergent composition
WO2016142228A1 (en) 2015-03-12 2016-09-15 Basf Se Process for making mixtures of enantiomers, and mixtures of enantiomers
DE102015213938A1 (en) 2015-07-23 2017-01-26 Henkel Ag & Co. Kgaa Use of a combination of complexing agent and surfactant to improve the rinse performance
DE102015221442A1 (en) * 2015-11-02 2017-05-04 Henkel Ag & Co. Kgaa Surfactant mixture containing amine oxide to improve the rinse performance
EP3228686B1 (en) * 2016-04-08 2021-10-27 The Procter & Gamble Company Automatic dishwashing
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DE69411746T2 (en) * 1993-08-13 1999-03-18 The Procter & Gamble Co., Cincinnati, Ohio GRANULAR, LONG-CHAIN AMINOXIDE CONTAINING, MACHINE DISHWASHER
US5912218A (en) * 1996-09-11 1999-06-15 The Procter & Gamble Company Low foaming automatic dishwashing compositions
DE102004044411A1 (en) * 2004-09-14 2006-03-30 Basf Ag Cleaning formulations for machine dishwashing containing hydrophobically modified polycarboxylates
DE102005060431A1 (en) * 2005-12-15 2007-06-21 Henkel Kgaa Automatic dishwasher detergent contains positively-charged polymer and nonionic surfactant of polyalkylene oxide monoether type for clear rinse aid or detergent with integrated clear rinse function

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