EP3775122A1 - Composition de nettoyage comprenant des tensioactifs à base de rhamnolipide et d'alkyl éther carboxylate - Google Patents

Composition de nettoyage comprenant des tensioactifs à base de rhamnolipide et d'alkyl éther carboxylate

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Publication number
EP3775122A1
EP3775122A1 EP19715528.6A EP19715528A EP3775122A1 EP 3775122 A1 EP3775122 A1 EP 3775122A1 EP 19715528 A EP19715528 A EP 19715528A EP 3775122 A1 EP3775122 A1 EP 3775122A1
Authority
EP
European Patent Office
Prior art keywords
rhamnolipid
composition
rha
composition according
alkyl ether
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP19715528.6A
Other languages
German (de)
English (en)
Inventor
Stephen Norman Batchelor
Paul Simon Stevenson
Jayne Michelle Bird
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 Global IP Ltd
Unilever IP Holdings BV
Original Assignee
Unilever NV
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Filing date
Publication date
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Publication of EP3775122A1 publication Critical patent/EP3775122A1/fr
Withdrawn legal-status Critical Current

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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
    • C11D1/02—Anionic compounds
    • C11D1/37—Mixtures of compounds all of which are anionic
    • 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
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or salts thereof
    • C11D1/06—Ether- or thioether 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
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0026—Low foaming or foam regulating compositions

Definitions

  • the invention concerns a cleaning composition
  • a cleaning composition comprising a rhamnolipid surfactant and an alkyl ether carboxylic acid surfactant.
  • Rhamnolipids are carboxylic acid containing anionic surfactants that consists of one or more alkyl chains connected via a beta hydroxy group to a rhamnose sugar. They may be produced by various bacterial species. When used as detergent actives in cleaning compositions, in particular laundry cleaning compositions, large quantities of foam is created which is difficult to remove.
  • the invention relates in a first aspect to a cleaning composition
  • a cleaning composition comprising:
  • R 2 is selected from saturated and mono-unsaturated C10 to C 2o linear or branched alkyl chains, preferably selected from: Ci 2 ; Ci 4 ; Ci 6 ; and, Cie linear alkyl chains, wherein n is selected from 5 to 30, preferably from 10 to 20, and wherein the weight fraction of alkyl ether carboxylic acid to rhamnolipid surfactant is from 0.05 to 10, preferably from 0.1 to 3.
  • the cleaning composition is a fluid cleaning composition, more preferably an aqueous cleaning composition.
  • the cleaning composition comprises from 0 to 20 wt.%, more preferably from 0 to 10 wt.% of additional surfactants, wherein if present, the weight fraction of additional surfactant to the sum of (rhamnolipid plus alkyl ether carboxylate/carboxylic acid surfactant) is from 0 to 1 .
  • the composition comprises at most of 1 wt.% of phosphorous containing chemicals, more preferably the composition comprises from 0 to 1 wt.% of phosphorous containing chemicals.
  • the composition comprises from 0.5 to 6 wt.%, more preferably from 1 to 6 wt.%, most preferably from 2 to 6 wt.% of the alkyl ether carboxylic acid anionic surfactant.
  • the alkyl chain, the R 2 group, of the alkyl ether carboxylic acid anionic surfactant is selected from saturated and mono-unsaturated Ci 6 to Cie linear alkyl chains.
  • the rhamnolipid is present in the composition at a level of from 1 .5 to 15 wt.%, more preferably from 2 to 8 wt.%.
  • the rhamnolipid comprises at least 50 wt.% di-rhamnolipid, more preferably at least 60 wt.% di-rhamnolipid, even more preferably 70 wt.% di-rhamnolipid, most preferably at least 80 wt.% di-rhamnolipid.
  • the rhamnolipid is a di-rhamnolipid of formula: Rha2Cs-i 2 C 8 -i 2 .
  • the preferred alkyl chain length is from C8 to C12, the alkyl chain may be saturated or unsaturated.
  • composition is a home care cleaning composition and further comprises one or more enzymes selected from lipases, proteases, amylases, cellulases, and mixtures thereof.
  • the cleaning composition is a laundry detergent composition, more preferably a liquid laundry detergent or a powder detergent.
  • the laundry detergent composition when dissolved in demineralised water at 4g/L, 293K, has a pH of from 6 to 1 1 , more preferably from 7 to 9.
  • the invention further relates in a second aspect to a domestic method of treating a textile, the method comprising the steps of:
  • composition as defined in the first aspect;
  • the cleaning composition comprises from 0.1 to 20 wt.%, preferably from 0.5 to 6 wt.%, more preferably from 1 to 6 wt.%, most preferably from 2 to 6 wt.% of the alkyl ether carboxylic acid anionic surfactant.
  • alkyl ether carboxylic acid Weights of alkyl ether carboxylic acid are calculated as the protonated form, R 2 -(OCH 2 CH 2 ) n - OCH 2 COOH.
  • the alkyl ether anionic surfactant may be in carboxylic acid form, or it may be in alkyl ether carboxylate surfactant form.
  • the alkyl ether carboxylate/carboxylic acid anionic surfactant may be used as salt version, for example with a counterion such as a sodium salt, or an amine salt.
  • the alkyl chain may be linear or branched, preferably it is linear.
  • the alkyl chain may be aliphatic or contain one cis or trans double bond.
  • the alkyl chain (F3 ⁇ 4) is selected from saturated and mono-unsaturated C 10 to C 20 linear or branched alkyl chains preferably selected from: C 12 ; Ci 4 ; C 16 ; and, Cis linear alkyl chain.
  • the alkyl ether carboxylic acid has n selected from 5 to 30, preferably from 10 to 20.
  • the weight fraction of alkyl ether carboxylic acid to rhamnolipid surfactant is from 0.05 to 10, preferably from 0.1 to 3.
  • Alkyl ether carboxylic acid are available from Kao (Akypo ®), Huntsman (Empicol®) and Clariant (Emulsogen ®).
  • Alkyl ether carboxylic acids synthesis is discussed in Anionic Surfactants Organic Chemistry edited by H.W. Stache (Marcel Dekker, New York 1996).
  • R 2 -(OCH 2 CH 2 ) n -OH may be present, preferably levels of R 2 - (OCH 2 CH 2 ) n -OH are from 0 to 10 wt.% in the alkyl ether carboxylic acid. Low levels of diglycolic acid and glycolic acid may be present as bi products.
  • NaCI from the synthesis may be present in the aqueous liquid laundry detergent
  • composition Additional NaCI may be added to the composition.
  • alkyl ether carboxylic acid may also be synthesised via an oxidation reaction:-
  • the oxidation is typically conducted using oxygen as the oxidant under basic conditions in the presence of metal catalyst such as Pd/Pt, as described in DE3135946; DE2816127 and EP0304763.
  • metal catalyst such as Pd/Pt, as described in DE3135946; DE2816127 and EP0304763.
  • Rhamnolipids are a class of glycolipid. They are constructed of rhamnose combined with beta-hydroxy fatty acids. Rhamnose is a sugar. Fatty acids are ubiquitous in animals and plants. Rhamnolipids are discussed in Applied Microbiology and Biotechnology (2010) 86:1323- 1336 by E. Deziel et al. Rhamnolipids are produced by Glycosurf, AGAE Technologies and Urumqi Unite Bio-Technology Co., Ltd. Rhamnolipids may be produced by strains of the bacteria Pseudomonas Aeruginosa.
  • Rhamnolipids may also be produced by a recombinant cell of Pseudomonas Putida where the recombinant cell comprises increased activity of at least one of the enzymes a/P hydrolase, rhamnosyltransferase I or rhamnosyl-transferase II compared to the wild-type of the cell.
  • rhamnolipids There are two major groups of rhamnolipids; mono-rhamnolipids and di-rhamnolipids.
  • Mono-rhamnolipids have a single rhamnose sugar ring.
  • a typical mono-rhamnolipid produced by P. aeruginosa is L-rhamnosyl-3-hydroxydecanoyl-3-hydroxydecanoate (RhaCioCio). It may be referred to as Rha-Cio-Cio, with a formula of C26H48O9.
  • Mono- rhamnolipids have a single rhamnose sugar ring.
  • the IUPAC Name is 3-[3-[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2- yljoxydecanoyloxyjdecanoic acid.
  • Di-rhamnolipids have two rhamnose sugar rings.
  • a typical di-rhamnolipid is L-rhamnosyl-L- rhamnosyl-3-hydroxydecanoyl-3-hydroxydecanoate (Rha2CioCio). It may be referred to as Rha-Rha-C-io-C-10, with a formula of C32H58O13.
  • the IUPAC name is 3-[3-[4,5-dihydroxy-6-methyl-3-(3,4, 5-tri hyd roxy-6-m ethyloxan-2- yl)oxyoxan-2-yl]oxyd ecanoyloxy]decanoic acid.
  • Rha- mono-rhamnolipids
  • RL1 mono-rhamnolipid
  • RL2 di-rhamnolipids
  • Rha-Rha Rh or Rh-Rh- or RL1.
  • rhamnolipid 2 is a mono-rhamnolipid
  • rhamnolipid 1 is a di-rhamnolipid. This leads to some ambiguity in the usage or "RL1 " and "RL2" in the literature.
  • Rhamnolipids produced by P. aeruginosa (unidentified as either mono- or di-rhamnolipids): C8-C8, C8-C10, C10-C8, C8"C12: 1 , C12: 1-C8, C10-C10, C12-C10, C12: 1-C10 C12-C12, C12: 1-C12, C14-C10, C14: 1-C10, C14-C14.
  • Rha-C10-C 8 Rha-C10 -C10, Rha-C12-C10, Rha-C12: 1-C10, Rha-C12-C12, Rha-C12: 1- C12, Rha-C14-C10. Rha-C-14; 1- C-10.
  • Rhamnolipids produced by Burkholdera (Pseudomonas) plantarii (di-rhamnolipids only): Rha-Rha-C14-C14.
  • ATC American Type Culture Collection
  • strains of P. aeruginosa There are also a number of strains that are only available to manufacturers of commercial Rhamnolipids. Additionally there are probably thousands of strains isolated by various research institutions around the world. Some work has gone into typing them into groups. Each strain has different characteristics including how much rhamnolipid is produced, which types of rhamnolipids are produced, what it metabolizes, and conditions in which it grows. Only a small percentage of the strains have been extensively studied.
  • strains of P. aeruginosa can be isolated to produce rhamnolipids at higher concentrations and more efficiently. Strains can also be selected to produce less byproduct and to metabolize different feedstock or pollutants. This production is greatly affected by the environment in which the bacterium is grown.
  • a typical di-rhamnolipid is L-rhamnosyl-L-rhamnosyl-3-hydroxydecanoyl-3- hydroxydecanoate (Rha2CioCio with a formula of C32H58O13).
  • the rhamnolipid is present in the formulation from 1.5 to 15 wt.%, more preferably from 2 to 8 wt.%.
  • the rhamnolipid is selected from:
  • Rha-C10-C8 Rha-C10-C10, Rha-C12:1-C10, Rha-C12-C12, Rha-C12:1- C12, Rha-C14-C10, Rha-C14:1-C10.
  • Mono-rhamnolipids may also be produced from P.putida by introduction of genes rhIA and rhIB from Psuedomonas aeruginosa [Cha et al. in Bioresour Technol. 2008.
  • the Rhamnolipid is L-rhamnosyl-3-hydroxydecanoyl-3-hydroxydecanoate
  • the rhamnolipid comprises at least 50 wt.% di-rhamnolipid, more preferably at least 60 wt.% di-rhamnolipid, even more preferably 70 wt.% di-rhamnolipid, most preferably at least 80 wt.% di-rhamnolipid.
  • the rhamnolipid is a di-rhamnolipid of formula: Rha2Cs-i 2 C 8 -i 2 .
  • the preferred alkyl chain length is from Cs to C12.
  • the alkyl chain may be saturated or unsaturated.
  • the composition is a cleaning composition, useful for cleaning a substrate, for example a surface, including for home and personal care purposes.
  • the composition is preferably a fluid cleaning composition, more preferably an aqueous cleaning composition.
  • the cleaning composition is a home care composition.
  • the cleaning composition is a laundry detergent composition, more preferably a liquid laundry detergent or a powder detergent.
  • the laundry detergent composition when dissolved in demineralised water at 4g/L, 293K, has a pH of from 6 to 11 , more preferably from 7 to 9.
  • Additional surfactants may be present in the composition.
  • the cleaning composition comprises from 0 to 20 wt.%, more preferably from 0 to 10 wt.% of additional surfactants, wherein if present, the weight fraction of additional surfactant to the sum of (rhamnolipid plus alkyl ether carboxylate/carboxylic acid surfactant) is from 0 to 1.
  • These are preferably selected from anionic and nonionic surfactants.
  • nonionic and anionic surfactants of the surfactant system may be chosen from the surfactants described "Surface Active Agents” Vol. 1 , by Schwartz & Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents” published by Manufacturing
  • nonionic detergent compounds which may be used include the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • Specific nonionic detergent compounds are the condensation products of aliphatic primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 EO, preferably 7EO to 9EO.
  • Preferred anionic detergent compounds which may be used are usually water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
  • suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, especially those obtained by sulphating alcohols, produced for example from tallow or coconut oil, sodium and potassium alkyl C10 to C20 benzene sulphonates, particularly sodium linear secondary alkyl C10 to C15 benzene sulphonates; and sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
  • the preferred anionic detergent compounds are sodium Cn to C15 alkyl benzene sulphonates and sodium C12 to C14 alkyl sulphates.
  • surfactants such as those described in EP-A- 328 177 (Unilever), which show resistance to salting-out, the alkyl polyglycoside surfactants described in EP-A-070 074, and alkyl monoglycosides.
  • Preferred surfactant systems are mixtures of anionic with nonionic detergent active materials, in particular, the groups and examples of anionic and nonionic surfactants pointed out in EP-A-346 995 (Unilever).
  • surfactant system that is a mixture of an alkali metal salt of a C12 to C14 primary alcohol sulphate together with a C12 to C16 primary alcohol 3 to 7 EO ethoxylate.
  • the additional surfactant is predominately anionic surfactant by weight.
  • composition may comprise any of these further preferred ingredients.
  • Builder materials may be selected from 1 ) calcium sequestrant materials, 2) precipitating materials, 3) calcium ion-exchange materials and 4) mixtures thereof.
  • calcium sequestrant builder materials examples include alkali metal polyphosphates, such as sodium tripolyphosphate and organic sequestrants, such as ethylene diamine tetra-acetic acid.
  • precipitating builder materials examples include sodium orthophosphate and sodium carbonate.
  • Examples of calcium ion-exchange builder materials include the various types of water- insoluble crystalline or amorphous aluminosilicates, of which zeolites are the best known representatives, e.g. zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in EP-A-0,384,070.
  • the composition may also contain 0-65 % of a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or
  • alkenylsuccinic acid nitrilotriacetic acid or the other builders mentioned below.
  • Many builders are also bleach-stabilising agents by virtue of their ability to complex metal ions.
  • Zeolite and carbonate are preferred builders.
  • the composition may contain as builder a crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably a sodium aluminosilicate. This is typically present at a level of less than 15 wt.%.
  • Aluminosilicates are materials having the general formula:
  • M is a monovalent cation, preferably sodium.
  • M is a monovalent cation, preferably sodium.
  • M is a monovalent cation, preferably sodium.
  • These materials contain some bound water and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g.
  • the preferred sodium aluminosilicates contain 1.5-3.5 S1O2 units in the formula above. They can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature.
  • the ratio of surfactants to alumuminosilicate (where present) is preferably greater than 5:2, more preferably greater than 3:1.
  • phosphate builders may be used.
  • 'phosphate' embraces diphosphate, triphosphate, and phosphonate species.
  • Other forms of builder include silicates, such as soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from Hoechst).
  • the laundry detergent formulation is a non-phosphate built laundry detergent formulation, i.e., contains less than 1 wt.% of phosphate.
  • the laundry detergent formulation is carbonate built if a builder is included.
  • the composition preferably comprises a fluorescent agent (optical brightener).
  • Fluorescent agents are well known and many such fluorescent agents are available commercially. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts.
  • the total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt.%, more preferably 0.01 to 0.1 wt.%.
  • Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, Di-amine stilbene di-sulphonic acid compounds, e.g. Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH, and Pyrazoline compounds, e.g. Blankophor SN.
  • Preferred fluorescers are: sodium 2 (4-styryl-3-sulfophenyl)-2H-napthol[1 ,2-d]triazole, disodium 4,4'-bis ⁇ [(4-anilino-6-(N methyl-N-2 hydroxyethyl) amino 1 ,3,5-triazin-2- yl)]amino ⁇ stilbene-2-2' disulfonate, disodium 4,4'-bis ⁇ [(4-anilino-6-morpholino-1 ,3,5-triazin-2- yl)]amino ⁇ stilbene-2-2' disulfonate, and disodium 4,4'-bis(2-sulfostyryl)biphenyl.
  • the aqueous solution used in the method has a fluorescer present.
  • a fluorescer is present in the aqueous solution used in the method it is preferably in the range from 0.0001 g/l to 0.1 g/l, preferably 0.001 to 0.02 g/l.
  • the composition preferably comprises a dye. Dyes are discussed in K. Hunger (ed).
  • Preferred dye chromophores are azo, azine, anthraquinone, phthalocyanine and
  • Azo, anthraquinone, phthalocyanine and triphenylmethane dyes preferably carry a net anionic charged or are uncharged.
  • Azine dyes preferably carry a net anionic or cationic charge.
  • Preferred non-shading dyes are selected are selected from blue dyes, most preferably anthraquinone dyes bearing sulphonate groups and triphenylmethane dye bearing sulphonate groups.
  • Preferred compounds are acid blue 80, acid blue 1 , acid blue 3; acid blue 5, acid blue 7, acid blue 9, acid blue 1 1 , acid blue 13, acid blue 15, acid blue 17, acid blue 24, acid blue 34, acid blue 38, acid blue 75, acid blue 83, acid blue 91 , acid blue 97, acid blue 93, acid blue 93:1 , acid blue 97, acid blue 100, acid blue 103, acid blue 104, acid blue 108, acid blue 109, acid blue 1 10, and acid blue 213.
  • On dissolution granules with non-shading dyes provide an attractive colour to the wash liquor.
  • Blue or violet Shading dyes are most preferred. Shading dyes deposit to fabric during the wash or rinse step of the washing process providing a visible hue to the fabric. In this regard the dye gives a blue or violet colour to a white cloth with a hue angle of 240 to 345, more preferably 260 to 320, most preferably 270 to 300.
  • the white cloth used in this test is bleached non-mercerised woven cotton sheeting.
  • a mixture of shading dyes may be used.
  • the shading dye chromophore is most preferably selected from mono-azo, bis-azo, anthraquinone, and azine.
  • Mono-azo dyes preferably contain a heterocyclic ring and are most preferably thiophene dyes.
  • shading dyes are selected from Direct Violet 9, Direct Violet 99, Direct Violet 35, Solvent Violet 13, Disperse Violet 28, dyes of the structure
  • the composition comprises a perfume.
  • the perfume is preferably in the range from 0.001 to 3 wt.%, most preferably 0.1 to 1 wt.%.
  • CTFA Cosmetic, Toiletry and Fragrance Association
  • OPD Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.
  • compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.
  • top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80 [1955]).
  • Preferred top-notes are selected from citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol.
  • the laundry treatment composition does not contain a peroxygen bleach, e.g., sodium percarbonate, sodium perborate, and peracid.
  • a peroxygen bleach e.g., sodium percarbonate, sodium perborate, and peracid.
  • composition may comprise one or more further polymers. Examples are:
  • carboxymethylcellulose polyethylene glycol
  • polyvinyl alcohol polyvinyl alcohol
  • polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid
  • Polymers present to prevent dye deposition for example poly(vinylpyrrolidone), poly(vinylpyridine-N-oxide), and poly(vinylimidazole), may be present in the formulation.
  • One or more enzymes are preferred to be present in a cleaning composition of the invention and when practicing a method of the invention.
  • the level of each enzyme in the laundry composition of the invention is from 0.0001 wt.% to 0.1 wt.% protein.
  • enzymes include proteases, alpha-amylases, cellulases, lipases, peroxidases/oxidases, pectate lyases, and mannanases, or mixtures thereof.
  • Suitable lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include lipases from Humicola (synonym Thermomyces), e.g. from H. lanuginosa (T. lanuginosus) as described in EP 258 068 and EP 305 216 or from H. insolens as described in WO 96/13580, a Pseudomonas lipase, e.g. from P. alcaligenes or P. pseudoalcaligenes (EP 218 272), P. cepacia (EP 331 376), P. stutzeri (GB 1 ,372,034), P.
  • lipase variants such as those described in WO 92/05249, WO 94/01541 , EP 407 225, EP 260 105, WO 95/35381 , WO 96/00292, WO 95/30744, WO 94/25578, WO 95/14783, WO 95/22615, WO 97/04079 and WO 97/07202, WO 00/60063.
  • Preferred commercially available lipase enzymes include LipolaseTM and Lipolase UltraTM, LipexTM and lipocleanTM (Novozymes A/S).
  • the method of the invention may be carried out in the presence of phospholipase classified as EC 3.1.1 .4 and/or EC 3.1.1 .32.
  • phospholipase is an enzyme which has activity towards phospholipids.
  • Phospholipids such as lecithin or phosphatidylcholine, consist of glycerol esterified with two fatty acids in an outer (sn-1 ) and the middle (sn-2) positions and esterified with phosphoric acid in the third position; the phosphoric acid, in turn, may be esterified to an amino-alcohol.
  • Phospholipases are enzymes which participate in the hydrolysis of phospholipids.
  • phospholipases Ai and A2 which hydrolyze one fatty acyl group (in the sn-1 and sn-2 position, respectively) to form lysophospholipid
  • lysophospholipase or phospholipase B which can hydrolyze the remaining fatty acyl group in lysophospholipid.
  • Phospholipase C and phospholipase D release diacyl glycerol or phosphatidic acid respectively.
  • the enzyme and the photobleach may show some interaction and should be chosen such that this interaction is not negative. Some negative interactions may be avoided by encapsulation of one or other of enzyme or photobleach and/or other segregation within the product.
  • proteases include those of animal, vegetable or microbial origin. Microbial origin is preferred. Chemically modified or protein engineered mutants are included.
  • the protease may be a serine protease or a metallo protease, preferably an alkaline microbial protease or a trypsin-like protease.
  • Preferred commercially available protease enzymes include AlcalaseTM, SavinaseTM, PrimaseTM, DuralaseTM, DyrazymTM, EsperaseTM, EverlaseTM, PolarzymeTM, and KannaseTM, (Novozymes A/S), MaxataseTM, MaxacalTM, MaxapemTM, ProperaseTM, PurafectTM, Purafect OxPTM, FN2TM, and FN3TM (Genencor International Inc.).
  • the method of the invention may be carried out in the presence of cutinase classified in EC 3.1.1 .74.
  • the cutinase used according to the invention may be of any origin.
  • cutinases are of microbial origin, in particular, of bacterial, of fungal or of yeast origin.
  • Suitable amylases include those of bacterial or fungal origin.
  • Amylases include, for example, alpha-amylases obtained from Bacillus, e.g. a special strain of B. lichen iformis, described in more detail in GB 1 ,296,839, or the Bacillus sp. strains disclosed in WO 95/026397 or WO 00/060060.
  • Commercially available amylases are DuramylTM,
  • TermamylTM Termamyl UltraTM, NatalaseTM, StainzymeTM, FungamylTM and BANTM
  • Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Suitable cellulases include cellulases from the genera Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, Acremonium, e.g. the fungal cellulases produced from Humicola insolens, Thielavia terrestris, Myceliophthora
  • thermophila and Fusarium oxysporum disclosed in US 4,435,307, US 5,648,263, US 5,691 ,178, US 5,776,757, WO 89/09259, WO 96/029397, and WO 98/012307.
  • cellulases include CelluzymeTM, CarezymeTM, CellucleanTM,
  • RenozymeTM Novozymes A/S
  • ClazinaseTM and Puradax HATM (Genencor International Inc.)
  • KAC-500(B)TM Kao Corporation
  • Suitable peroxidases/oxidases include those of plant, bacterial or fungal origin.
  • peroxidases Chemically modified or protein engineered mutants are included.
  • useful peroxidases include peroxidases from Coprinus, e.g. from C. cinereus, and variants thereof as those described in WO 93/24618, WO 95/10602, and WO 98/15257.
  • peroxidases include GuardzymeTM and NovozymTM 51004
  • Any enzyme present in the composition may be stabilized using conventional stabilizing agents, e.g., a polyol such as propylene glycol or glycerol, a sugar or sugar alcohol, lactic acid, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative such as 4-formylphenyl boronic acid, and the composition may be formulated as described in e.g. WO 92/19709 and WO 92/19708.
  • a polyol such as propylene glycol or glycerol
  • a sugar or sugar alcohol lactic acid, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative such as 4-formylphenyl boronic acid
  • alkyl groups are sufficiently long to form branched or cyclic chains, the alkyl groups encompass branched, cyclic and linear alkyl chains.
  • the alkyl groups are preferably linear or branched, most preferably linear.
  • indefinite article “a” or “an” and its corresponding definite article “the” as used herein means at least one, or one or more, unless specified otherwise.
  • Rhamnolipid (RL-A) from Pseudomonas aeruginosa (CAS-No 869062-42-0) was purchased from Aldrich and used as supplied. Aldrich obtained the rhamnolipid from AGAE technology. The rhamnolipid product is a mixture of monorhamnolipids and dirhamnolipids with (Rha- Rha-Cio-Cio and Rha-C «rCio) as predominant.
  • the alkyl ether carboxylate was Emulsogen COL100 supplied by Clariant, it is oleyl based with 10 moles of ethoxylation.
  • An aqueous liquid laundry detergent formulation was created containing 6 wt.% of
  • Rhamnolipid (RL-A). This was added to 26 French hard water to give an aqueous solution containing 4g/L of Rhamnolipid (RL1 ). 25g of the solution was decanted in to a 125ml glass bottle without the creation of any foam. A lid was placed on the bottle and it was carefully placed on its axis on an orbital shaker and rotated at 200 rpm for 30 seconds. The bottle was removed and stood on a flat surface and the foam height measured, as the distance from the top of the liquid to the top of the foam. The experiment was repeated but using 6 wt.% Alkyl Ether Carboxylate (AEC). All experiments were repeated eight times and these reference results shown in the table below.
  • AEC Alkyl Ether Carboxylate
  • %AEC is the percent of AEC in the mixture.
  • Rhamnolipid obtained from Evonik. (Lx P001 ).
  • the rhamnolipid is predominately a di-rhamnolipid of formula: Rha2C 8 -i 2 Cs-i 2.
  • the neat rhamnolipid gave the following foam (5 repeats):
  • Foam height 43.6-0.2635 * (%AEC) When in a 50:50 mixture with Emulsogen COL100, much lower levels of foam than expected from the individual components was obtained (5 repeats):

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention concerne une composition de nettoyage comprenant : (a) entre 1 et 20 % en poids d'un tensioactif anionique rhamnolipide ; et b) entre 0,1 et 20 % en poids d'un tensioactif acide alkyl éther carboxylique de la structure suivante : R2-(OCH2CH2)n-OCH2-COOH, dans laquelle : R2 est choisi parmi des chaînes alkyle linéaires ou ramifiées en C10 à C20, saturées et mono-insaturées, de préférence choisies parmi : C12 ; C14 ; C16 ; et, des chaînes alkyle linéaires en C18, n étant choisi entre 5 et 30, de préférence entre 10 et 20, et la fraction pondérale d'acide alkyl éther carboxylique au tensioactif rhamnolipide étant comprise entre 0,05 et 10, de préférence comprise entre 0,1 et 3 ; et un procédé domestique de traitement d'un textile avec une solution aqueuse de ladite composition de nettoyage.
EP19715528.6A 2018-05-17 2019-04-10 Composition de nettoyage comprenant des tensioactifs à base de rhamnolipide et d'alkyl éther carboxylate Withdrawn EP3775122A1 (fr)

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WO2021185956A1 (fr) * 2020-03-19 2021-09-23 Unilever Ip Holdings B.V. Composition détergente

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