Cleaning composition

Abstract

The present invention relates to a cleaning composition comprising: a) 1 to 30 wt% of a primary alkyl sulfate surfactant; b) 1 to 10 wt% of an amphoteric surfactant selected from the group consisting of betaines, glycamides and sulfobetaines; and c) 1 to 10 wt% of a rhamnolipid biosurfactant; wherein the ratio of primary alkyl sulfate surfactant to biosurfactant is 8:1 to 1 :10; and wherein the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 8:1 to 1 :10; wherein the primary alkyl sulfate is C 10 -C 20 alkyl sulfate; to a method of treating a substrate; to a method of treating a textile; and to the use of a combination of a biosurfactant and an amphoteric surfactant for improving the cold storage stability of a primary alkyl sulfate containing formulation.

Description

Technical Field

[0001] This invention relates to cleaning compositions comprising primary alkyl sulfate surfactants, amphoteric surfactants, and biosurfactants. Background of the Invention

[0003] Primary alkyl sulfates are anionic surfactants used for cleaning purposes. These surfactants have issues with cold stability. The Krafft points of these materials are above ideal; for example, sodium lauryl sulfate has a Krafft point of approximately 16°C. Below this point, formulations containing these materials undergo a phase transition from soluble to insoluble, and the formulation becomes anisotropic and emulsified in appearance. This is unacceptable to consumers.

[0004] The present invention seeks to overcome the cold stability problem of compositions containing primary alkyl sulfate surfactants. Summary of the Invention

[0005] We have found that cleaning compositions containing primary alkyl sulfate surfactants exhibit improved stability at low temperatures through the combination of amphoteric surfactants and rhamnolipid surfactants.

[0006] In a first aspect, the present invention relates to a cleaning composition comprising:

[0007] a) 1 to 30% by weight of primary alkyl sulfate surfactants;

[0008] b) 1 to 10% by weight of an amphoteric surfactant selected from betaines, glucosamides, and sulfobetaines; and

[0009] c) 1 to 10% by weight of rhamnolipid biosurfactants;

[0010] The ratio of primary alkyl sulfate surfactant to biosurfactant is 8:1 to 1:10, preferably 7:1 to 1:5, more preferably 6:1 to 1:2, and even more preferably 6:1 to 1:1; and

[0011] The ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 8:1 to 1:10, preferably 7:1 to 1:5, more preferably 6:1 to 1:2, and even more preferably 6:1 to 1:1.

[0012] Primary alkyl sulfates are C 10 -C 20 Alkyl sulfates.

[0013] Preferably, the cleaning composition is a fluid cleaning composition, and more preferably, an aqueous cleaning composition.

[0014] Preferably, the cleaning composition contains 1 to 25% by weight, more preferably 2.5 to 20% by weight, and most preferably 2.5 to 15% by weight of a primary alkyl sulfate.

[0015] Preferably, the primary alkyl sulfate is C 10 -C 20 Sodium, potassium, or ammonium alkyl sulfates, or even more preferably C 10 -C 20 Sodium alkyl sulfate, with sodium lauryl sulfate being the most preferred.

[0016] Preferably, the cleaning composition contains 1 to 9% by weight, more preferably 1 to 8% by weight, and most preferably 1.5 to 6% by weight of rhamnolipid biosurfactant.

[0017] Preferably, the rhamnolipin biosurfactant comprises at least 50% by weight of monorhamnolipin, more preferably at least 60% by weight of monorhamnolipin, even more preferably 70% by weight of monorhamnolipin, and most preferably at least 80% by weight of monorhamnolipin, or wherein the rhamnolipin comprises at least 50% by weight of dirhamnolipin, more preferably at least 60% by weight of dirhamnolipin, even more preferably 70% by weight of dirhamnolipin, and most preferably at least 80% by weight of dirhamnolipin.

[0018] Preferably, the rhamnolipid biosurfactant is a dirhamnolipid of the following formula: Rha2C 8-12 C 8-12 The hydrocarbon chain can be saturated or unsaturated.

[0019] Preferably, the cleaning composition contains 1 to 9% by weight, more preferably 1 to 8% by weight, and most preferably 1.5 to 6% by weight of an amphoteric surfactant selected from betaines, glucosamides, and sulfobetaines.

[0020] Preferably, the amphoteric surfactant is selected from cocamidopropyl betaine and lauryl hydroxysulfonate betaine, with lauryl hydroxysulfonate being the most preferred amphoteric surfactant.

[0021] Preferably, the composition is a household care cleaning composition.

[0022] Preferably, the composition further comprises one or more enzymes selected from lipases, proteases, amylases, cellulases, and mixtures thereof.

[0023] Preferably, when dissolved in demineralized water at 4 g / L and 293 K, the detergent composition has a pH of 4 to 11, more preferably 5 to 10, and even more preferably 5 to 9.

[0024] Preferably, the cleaning composition is a laundry detergent composition, more preferably a liquid laundry detergent or a powder detergent. Preferably, when it is a liquid detergent, the laundry detergent composition has a pH of 6 to 11, more preferably 7 to 9, when dissolved in demineralized water at 4 g / L and 293 K.

[0025] In a second aspect, the present invention further relates to a method for cleaning a substrate, the method comprising the following steps:

[0026] a) Treat the substrate with an aqueous solution of the cleaning composition as defined in the first aspect; and

[0027] b) Rinse and dry the substrate.

[0028] Preferably, the substrate is selected from tableware, ceramics, glassware, plastics and metals.

[0029] In a third aspect, the present invention further relates to a household method for treating textiles, the method comprising the following steps:

[0030] a) Treat textiles with a 1 g / L aqueous solution of the cleaning composition as defined in the first aspect; and

[0031] b) Keep the aqueous solution in contact with the textile for 10 minutes to 2 days, then rinse and dry the textile.

[0032] In a fourth aspect, the present invention also relates to the use of a combination of rhamnolipid biosurfactant and an amphoteric surfactant selected from betaines, glucosamides and sulfobetaines for improving the cold storage stability of formulations containing primary alkyl sulfates at temperatures below 11°C, more preferably below 10°C, and even more preferably below 5°C.

[0033] The intention is that any preferred subject described herein can be combined with any other subject, in particular, two or more preferred subjects. Detailed Implementation

[0034] Primary alkyl sulfates

[0035] The cleaning composition contains 1 to 30% by weight, preferably 1 to 25% by weight, more preferably 2.5 to 20% by weight, and most preferably 2.5 to 15% by weight of a primary alkyl sulfate.

[0036] Primary alkyl sulfates are C 10 -C 20 Alkyl sulfates, preferably lauryl sulfates.

[0037] Primary alkyl sulfates are preferably in the form of counterions, and more preferably counterions are sodium, potassium or ammonium ions.

[0038] Examples of preferred materials include C 10 -C 20 Sodium alkyl sulfate, with sodium lauryl sulfate being the most preferred.

[0039] Primary alkyl sulfates do not include alkoxylated sulfates, meaning the term primary alkyl sulfates do not include primary ether sulfates.

[0040] The ratio of primary alkyl sulfate surfactant to biosurfactant, preferably microbial biosurfactant, and most preferably rhamnolipid biosurfactant is 8:1-1:10, more preferably 7:1-1:5, more preferably 6:1-1:2, and even more preferably 6:1-1:1.

[0041] The ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 8:1-1:10, preferably 7:1-1:5, more preferably 6:1-1:2, and even more preferably 6:1-1:1.

[0042] The ratio of primary alkyl sulfate surfactant to amphoteric surfactant and the ratio of primary alkyl sulfate surfactant to biosurfactant, preferably microbial biosurfactant, most preferably rhamnolipid biosurfactant, can be individually or together, preferably 5:1 to 1:1, more preferably 4:1 to 1:1, more preferably 3:1 to 1:1, most preferably 2.75:1 to 1:1, or even 2.5 to 1:1.

[0043] Biosurfactants

[0044] Preferably, the rhamnolipid biosurfactant is present in the formulation at 1 to 9% by weight, more preferably 1 to 8% by weight, and most preferably 1.5 to 6% by weight.

[0045] Biosurfactants are rhamnolipids. These are a class of glycolipids. They are composed of rhamnose, which is combined with β-hydroxy fatty acids. Rhamnose is a sugar. Fatty acids are ubiquitous in animals and plants.

[0046] Rhamnolipides were discussed by E. Deziel et al. in Applied Microbiology and Biotechnology (2010) 86:1323-1336. Rhamnolipides are produced by Evonik, Stepan, Glycosurf, AGAE Technologies, and UrumqiUnite Bio-Technology Co., Ltd. Rhamnolipides can be produced by strains of the bacterium *Pseudomonas aeruginosa*. There are two main groups of rhamnolipides: monorhamnolipides and dirhamnolipides.

[0047] Monorhamnolipides possess a single rhamnosine sugar ring. A typical monorhamnolipide produced by *Pseudomonas aeruginosa* is L-rhamnosyl-β-hydroxydecyl-β-hydroxydecanoate (RhaC). 10 C 10 It can be referred to as Rha-C. 10 -C 10 , having formula C 26 H 48 O9. Monorhamnolipids have a single rhamnosyl sugar ring.

[0048] The IUPAC name is 3-[3-[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxacyclohexyl-2-yl]oxydecanoyloxy]decanoic acid.

[0049] Dirhamnolipids possess two rhamnosyl sugar rings. A typical dirhamnolipid is L-rhamnosyl-L-rhamnosyl-β-hydroxydecyl-β-hydroxydecanoate (Rha2C). 10 C 10 It can be called Rha-Rha-C- 10 -C- 10 , having formula C 32 H 58 O 13 .

[0050] The IUPAC name is 3-[3-[4,5-dihydroxy-6-methyl-3-(3,4,5-trihydroxy-6-methyloxecyclohex-2-yl)oxyoxecyclohex-2-yl]oxydecanoyloxy]decanoic acid.

[0051] In practice, depending on the carbon source and bacterial strain, a variety of other trace components with different combinations of alkyl chain lengths exist alongside the more common rhamnolipides described above. The ratio of monorhamnolipides to dirhamnolipides can be controlled by the production method. Some bacteria produce only monorhamnolipides (see US 5767090: Example 1), and some enzymes can convert monorhamnolipides to dirhamnolipides.

[0052] In various published texts, monorhamnolipids are labeled Rha-, which can be abbreviated as Rh or RL2. Similarly, dirhamnolipids are labeled Rha-Rha or Rh-Rh- or RL1. For historical reasons, "rhamnolipid 2-Li" is a monorhamnolipid and "rhamnolipid 1-Li" is a dirhamnolipid. This has led to some ambiguity in the use of "dirhamnolipid" and "dirhamnolipid" in the literature.

[0053] In this patent specification, we use the terms mono- and di-rhamnolipids to avoid such possible confusion. However, if the abbreviations are used, R1 is mono-rhamnolipid and R2 is di-rhamnolipid. For more information on the confusion of terminology in the prior art, see the introduction of US 4814272.

[0054] The following rhamnolipids produced by the following bacteria have been detected: (C12:1, C14:1 indicates fatty acyl chains with double bonds).

[0055] Rhamnolipids (monorhamnetin) produced by Pseudomonas aeruginosa:

[0056] Rha-C8-C10, Rha-C10-C8, Rha-C-10-C10, Rha-C10-C12, Rha-C10-C12:1, Rha-C12-C10, Rha-C12:1-C10.

[0057] Rhamnolipids (dirhamnolipids) produced by Pseudomonas aeruginosa:

[0058] Rha-Rha-C8-C10, Rha-Rha-C8-C12:1, Rha-Rha-C10-C8, Rha-Rha-C10-C10, Rha-Rha-C10-C12 :1. Rha-Rha-C-10-C-12, Rha-Rha-C-12-C-10, Rha-Rha-C-12:1-C-12, Rha-Rha-C-10-C14:1.

[0059] Rhamnolipids produced by Pseudomonas aeruginosa (not identified as mono- or di-rhamnolipids):

[0060] 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.

[0061] Rhamnolipids (monorhamnolipids only) produced by *Pseudomonas chlororaphis*:

[0062] Rha-C10-C8, 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.

[0063] Rhamnolipids (dirhamnolipids only) produced by Burkholdera pseudomallei:

[0064] Rha-Rha-C14-C14.

[0065] Rhamnolipids (dirhamnolipids only) produced by Burkholdera plantarii (a Pseudomonas):

[0066] Rha-Rha-C14-C14.

[0067] The American Type Culture Collection (ATCC) holds over 100 archived *Pseudomonas aeruginosa* strains. Many other strains are available only to commercial rhamnolipin manufacturers. In addition, there are likely thousands of strains isolated from research institutions worldwide. Some studies have classified them into groups. Each strain possesses distinct characteristics, including the amount of rhamnolipin produced, the type of rhamnolipin produced, its metabolic processes, and its growth conditions. Only a small fraction of these strains have been extensively studied.

[0068] Through evaluation and selection, *Pseudomonas aeruginosa* can be isolated to produce rhamnolipids at higher concentrations and more efficiently. Strains that produce fewer byproducts and metabolize different raw materials or contaminants can also be selected. This production is greatly influenced by the environment in which the bacteria grow.

[0069] A typical dirhamnolipid is L-rhamnosyl-L-rhamnosyl-β-hydroxydecanoyl-β-hydroxydecanoate (with the formula C... 32 H 58 O 13 Rha2C 10 C 10 ).

[0070] In practice, depending on the carbon source and bacterial strain, a variety of other trace components with different alkyl chain length combinations exist alongside the more common rhamnolipides described above. The ratio of monorhamnolipides to dirhamnolipides can be controlled by the production method. Some bacteria produce only monorhamnolipides (see US 5767090: Example 1), and some enzymes can convert monorhamnolipides to dirhamnolipides.

[0071] Preferably, the rhamnose glycolipid is selected from:

[0072] - Rhamnolipids (monorhamnetin) produced by Pseudomonas aeruginosa:

[0073] Rha-C8-C10, Rha-C10-C8, Rha-C10-C10, Rha-C10-C12, Rha-C10-C12:1, Rha-C12-C10, Rha-C12:1-C10.

[0074] - Rhamnolipids produced by Pseudomonas aeruginosa (monorhamnolipids only):

[0075] Rha-C10-C8, Rha-C10-C10, Rha-C12-C10, Rha-C12:1-C10, Rha-C12-C12, Rha-C12:1-C12, Rha-C14-C10, Rha-C14:1-C10.

[0076] - Monorhamnolipids can also be produced from *Pseudomonas putida* by introducing the genes rhIA and rhIB from *Pseudomonas aeruginosa* [Cha et al. Bioresour Technol. 2008. 99(7): 2192-9].

[0077] - Rhamnolipids (dirhamnolipids) produced by Pseudomonas aeruginosa:

[0078] Rha-Rha-C8-C10, Rha-Rha-C8-C12:1, Rha-Rha-C10-C8, Rha-Rha-C10-C10, Rha-Rha-C10 -C12:1, Rha-Rha-C10-C12, Rha-Rha-C12-C10, Rha-Rha-C12:1-C12, Rha-Rha-C10-C14:1

[0079] - Rhamnolipids produced by Burkholderia melioides (dirhamnolipids only):

[0080] Rha-Rha-C14-C14.

[0081] - Rhamnolipids (dirhamnolipids only) produced by Burkholderia plantarum (Pseudomonas):

[0082] Rha-Rha-C14-C14.

[0083] - Rhamnolipids produced by Pseudomonas aeruginosa, which were initially not identified as mono- or di-rhamnolipids:

[0084] 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.

[0085] Most preferably, rhamnolipid is L-rhamnosyl-β-hydroxydecyl-β-hydroxydecanoate (with formula C) produced by Pseudomonas aeruginosa. 26 H 48 O9's RhaC 10 C 10 ).

[0086] Preferably, the rhamnolipid contains at least 50% by weight of monorhamnolipid, more preferably at least 60% by weight of monorhamnolipid, even more preferably 70% by weight of monorhamnolipid, and most preferably at least 80% by weight of monorhamnolipid; or, wherein the rhamnolipid contains at least 50% by weight of dirhamnolipid, more preferably at least 60% by weight of dirhamnolipid, even more preferably 70% by weight of dirhamnolipid, and most preferably at least 80% by weight of dirhamnolipid.

[0087] Preferably, the rhamnose glycolipid is a dirhamnose glycolipid of the following formula: Rha2C 8-12 C 8-12 The preferred alkyl chain length is C8-C9. 12 The hydrocarbon chain can be saturated or unsaturated.

[0088] Amphoteric surfactants

[0089] The surfactant blend contains 1 to 10% by weight of amphoteric (also known as zwitterionic) surfactants.

[0090] Preferably, the cleaning composition contains 1 to 9% by weight, more preferably 1 to 8% by weight, and most preferably 1.5 to 6% by weight of an amphoteric surfactant.

[0091] The amphoteric surfactant is selected from betaines, glucosamides, and sulfobetaines, preferably from cocamidopropyl betaine and lauryl hydroxysulfobetaine, and most preferably from lauryl hydroxysulfobetaine.

[0092] Cleaning Composition

[0093] The composition is a cleaning composition that can be used to clean substrates, such as surfaces, including for household and personal care purposes. The composition is preferably a fluid cleaning composition, more preferably an aqueous cleaning composition.

[0094] Preferably, the cleaning composition is a household care composition.

[0095] Such compositions can be used, for example, for hand washing dishes to clean substrates such as tableware, ceramics, glassware, plastics and metals.

[0096] Such compositions can be used, for example, for laundry purposes, to wash textiles.

[0097] Preferably, the cleaning composition is a laundry detergent composition, more preferably a liquid laundry detergent or a powder detergent.

[0098] pH

[0099] Preferably, when dissolved in demineralized water at 4 g / L, 293 K, the detergent composition has a pH of 4 to 11, more preferably 5 to 10, and even more preferably 5 to 9.

[0100] Preferably, when it is a liquid laundry detergent, the laundry detergent composition has a pH of 6 to 11, more preferably 6 to 9, when dissolved in demineralized water at 4 g / L, 293 K.

[0101] Other surfactants

[0102] Other surfactants may be present in the composition.

[0103] Preferably, the cleaning composition contains 0 to 20% by weight, more preferably 0 to 10% by weight, of an additional surfactant.

[0104] These are preferably selected from anionic and nonionic surfactants.

[0105] Typically, the nonionic and anionic surfactants used in surfactant systems can be selected from Schwartz & Perry's "Surface Active Agents" Vol. 1, Interscience 1949, Schwartz, Perry & Berch Vol. 2, Interscience 1958, the current edition of "McCutcheon's Emulsifiers and Detergents" published by Manufacturing Confectioners Company, or "Tenside-Taschenbuch", H. Stache, 2nd Edn, Carl Hauser Verlag, 1981. Preferably, the surfactant used is saturated.

[0106] Preferred nonionic detergent compounds that can be used include reaction products of compounds having hydrophobic groups and reactive hydrogen atoms (e.g., aliphatic alcohols, acids, amides) with alkyl oxides (particularly ethylene oxide alone or ethylene oxide with propylene oxide). Specific nonionic detergent compounds are condensation products of aliphatic straight-chain or branched primary or secondary alcohols with ethylene oxide, generally 5-40EO, preferably 7EO-9EO.

[0107] Preferred anionic detergent compounds are typically water-soluble alkali metal salts of organic sulfuric and sulfonic acids having an alkyl group containing about 8 to about 22 carbon atoms; the term alkyl is used for alkyl moiety including higher acyl groups. Examples of suitable synthetic anionic detergent compounds are alkyl C... 10 -C 20 Sodium and potassium benzenesulfonate, especially straight-chain secondary alkyl C 10 -C 15 Sodium benzenesulfonate; and sodium alkyl glycerol ether sulfate, especially those ethers derived from higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum. Preferred anionic detergent compounds are C 11 -C 15 Sodium alkylbenzene sulfonate. Also applicable are surfactants such as those described in EP-A-328177 (Unilever) (which exhibit salting-out resistance), alkyl polysaccharide surfactants and alkyl monosaccharides described in EP-A-070074.

[0108] The preferred surfactant system is a mixture of anionic and nonionic detergent active substances.

[0109] Preferably, the additional surfactant is primarily anionic surfactant by weight.

[0110] Cleaning enhancer

[0111] Cleaning enhancers may preferably be present in the composition.

[0112] The composition preferably contains 0.5% to 15% by weight, more preferably 0.75% to 15% by weight, even more preferably 1% to 12% by weight, and most preferably 1.5% to 10% by weight of a cleaning synergist selected from anti-redeposition polymers; detergency polymers; alkoxylated polycarboxylic acid esters as described in WO2019 / 008036 and WO2019 / 007636; and mixtures thereof.

[0113] Anti-redeposition polymers

[0114] Preferred anti-redeposition polymers include alkoxylated polyamines.

[0115] Preferred alkoxylated polyamines include alkoxylated polyethyleneimine and / or alkoxylated polypropyleneimine. The polyamine can be linear or branched. It can be branched to the extent that it is a dendritic polymer. Alkoxylation can typically be ethoxylation or propoxylation, or a mixture of both. When the nitrogen atom is alkoxylated, the preferred average degree of alkoxylation is 10-30, more preferably 15-25. A preferred material is ethoxylated polyethyleneimine with an average degree of ethoxylation of 10-30, more preferably 15-25, wherein the nitrogen atom is ethoxylated.

[0116] Decontamination polymer

[0117] Preferably, the detergency polymer is a polyester detergency polymer.

[0118] Preferred detergency polymers include those described in WO2014 / 029479 and WO2016 / 005338.

[0119] Preferably, the polyester-based detergency polymer is a polyester according to the following formula (I):

[0120]

[0121] in

[0122] R 1 and R 2 They are independent of each other as X-(OC2H4) n -(OC3H6) m , where X is C 1-4 The alkyl group, preferably methyl, consists of a block arrangement of -(OC2H4) and -(OC3H6) groups, with the blocks composed of -(OC3H6) groups bonded to the COO group or forming HO-(C3H6), and preferably X-(OC2H4) independently of each other. n -(OC3H6) m ,

[0123] n is a molar mean number based on 12-120, preferably 40-50.

[0124] m is a molar mean number based on 1-10, preferably 1-7, and

[0125] a is the mole average based on 4-9.

[0126] Preferably, the polyester provided as an active blend comprises:

[0127] A) 45 to 55% by weight of one or more active blends of polyesters according to formula (I) below.

[0128]

[0129] in

[0130] R 1 and R 2 They are X-(OC2H4) independently of each other. n -(OC3H6) m , where X is C 1-4The alkyl group, preferably methyl, is arranged in a block-by-block manner with -(OC2H4) and -(OC3H6) groups, and the blocks composed of -(OC3H6) groups are combined with COO groups or are HO-(C3H6), and preferably are X-(OC2H4) independently of each other. n -(OC3H6) m ,

[0131] n is a molar mean number based on 12-120, preferably 40-50.

[0132] m is a molar mean number based on 1-10, preferably 1-7, and

[0133] a is a mole average based on 4 to 9.

[0134] B) 10% to 30% by weight of the active blend of one or more alcohols selected from ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, and butylethylene glycol.

[0135] C) 24% to 42% water by weight of the active blend.

[0136] Alkoxylated polycarboxylic acid esters

[0137] Alkoxylated polycarboxylic acid esters can be obtained as follows: First, an aromatic polycarboxylic acid containing at least three carboxylic acid units or anhydrides derived therefrom, preferably an aromatic polycarboxylic acid containing three or four carboxylic acid units or anhydrides derived therefrom, more preferably an aromatic polycarboxylic acid containing three carboxylic acid units or anhydrides derived therefrom, even more preferably trimellitic acid or trimellitic anhydride, most preferably trimellitic anhydride, is reacted with an alcohol alkoxylate, and in a second step, the resulting product is reacted with an alcohol or a mixture of alcohols, preferably with a C16 / C18 alcohol.

[0138] Further components

[0139] The cleaning composition may contain any of these further preferred ingredients.

[0140] If the cleaning composition is a household care composition, especially if it is for hand washing dishes or laundry purposes, one or more of these further ingredients are particularly useful.

[0141] Builders or complexing agents

[0142] The detergent building block materials can be selected from 1) calcium chelating agents, 2) precipitating agents, 3) calcium ion exchange agents and 4) mixtures thereof.

[0143] Examples of calcium chelating detergent builders include alkali metal polyphosphates such as sodium tripolyphosphate and organic chelating agents such as ethylenediaminetetraacetic acid.

[0144] Examples of precipitating detergent materials include sodium orthophosphate and sodium carbonate.

[0145] Examples of calcium ion exchange detergent materials include various types of water-insoluble crystalline or amorphous aluminosilicates, among which zeolites are the most well-known representatives, such as zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y, and type P zeolite as described in EP-A-0384070.

[0146] The composition may also contain 0-65% of a builder or complexing agent, such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, alkyl- or alkenyl succinic acid, hypozinotriacetic acid, or other builders mentioned below. Many builders are also bleach stabilizers due to their ability to complex metal ions.

[0147] Zeolites and carbonates (including bicarbonates and sesquicarbonates) are preferred detergent builders.

[0148] The composition may contain crystalline aluminosilicates as a detergent builder, preferably alkali metal aluminosilicates, more preferably sodium aluminosilicates. This is typically present at a level of less than 15% by weight. Aluminosilicates are materials having the following general formula:

[0149] 0.8-1.5M 20 Al2O3.0.8-6SiO2

[0150] Wherein M is a monovalent cation, preferably sodium. These materials contain some bound water and require a calcium ion exchange capacity of at least 50 mg CaO / g. Preferred sodium aluminosilicates contain 1.5-3.5 SiO2 units in the above formula. They can be readily prepared by a reaction between sodium silicate and sodium aluminate, as well as well described in the literature. The ratio of surfactant to aluminosilicate (when present) is preferably greater than 5:2, more preferably greater than 3:1.

[0151] Phosphate builders can be used as an alternative to or supplement to aluminosilicate builders. In this art, the term "phosphate" includes diphosphates, triphosphates, and phosphonates. Other forms of builders include silicates, such as soluble silicates, metasilicates, and layered silicates (e.g., SKS-6 from Hoechst).

[0152] Preferably, the laundry detergent formulation contains less than 1% by weight of phosphate. If it contains a detergent builder, the laundry detergent formulation is preferably a carbonate builder.

[0153] fluorescent agent

[0154] The composition preferably contains a fluorescent agent (fluorescent whitening agent).

[0155] Fluorescent agents are well known, and many such fluorescent agents are commercially available. Typically, these fluorescent agents are provided and used in the form of their alkali metal salts, such as sodium salts. The total amount of one or more fluorescent agents used in the composition is typically 0.005 to 2% by weight, more preferably 0.01 to 0.1% by weight. Preferred types of fluorescent agents are: stilbene biphenyl compounds, such as Tinopal (trademark) CBS-X; diamine stilbene disulfonic acid compounds, such as Tinopal DMS pure Xtra and Blankophor (trademark) HRH; and pyrazoline compounds, such as Blankophor SN. Preferred fluorescent agents are: sodium 2-(4-styryl-3-sulfophenyl)-2H-naphthol[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.

[0156] Preferably, the aqueous solution used in this method contains a fluorescent agent. When the fluorescent agent is present in the aqueous solution used in this method, it is preferably in the range of 0.0001 g / L to 0.1 g / L, more preferably 0.001 to 0.02 g / L.

[0157] dye

[0158] The composition preferably contains a dye. Dyes are discussed in K. Hunger (ed.). Industrial Dyes: Chemistry, Properties, Applications (Weinheim: Wiley-VCH 2003). Organic dyes are listed in the Color Index (Society of Dyers and Colourists and the American Association of Textile Chemists and Colorists).

[0159] Preferred dye chromophores are azo, azazine, anthraquinone, phthalocyanine, and triphenylmethane.

[0160] Azo, anthraquinone, phthalocyanine, and triphenylmethane dyes preferably carry a net anionic charge or are uncharged. Azazine dyes preferably carry a net anionic or cationic charge.

[0161] The preferred non-toning dyes are selected from blue dyes, with anthraquinone dyes and triphenylmethane dyes containing sulfonate groups being most preferred. Preferred compounds are Acid Blue 80, Acid Blue 1, Acid Blue 3; Acid Blue 5, Acid Blue 7, Acid Blue 9, Acid Blue 11, 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 110, and Acid Blue 213. Upon dissolution, the particles containing the non-toning dye provide an attractive color to the washing liquid.

[0162] Blue or purple tinting dyes are most preferred. During the washing or rinsing step of the washing process, the tinting dye is deposited onto the fabric, thereby providing the fabric with a visible hue. In this respect, the dye imparts blue or purple to white fabric with a hue angle of 240 to 345, more preferably 260 to 320, and most preferably 270 to 300. The white fabric used in this test is bleached, non-mercerized cotton fabric.

[0163] Tinting dyes are discussed in WO 2005 / 003274, WO 2006 / 032327(Unilever), WO 2006 / 032397(Unilever), WO 2006 / 045275(Unilever), WO 2006 / 027086(Unilever), WO 2008 / 017570(Unilever), WO 2008 / 141880(Unilever)、WO 2009 / 132870(Unilever)、WO 2009 / 141173(Unilever)、WO 2010 / 099997(Unilever)、WO 2010 / 102861(Unilever)、WO 2010 / 148624(Unilever)、WO 2008 / 087497(P&G)、WO Among them are 2011 / 011799(P&G), WO 2012 / 054820(P&G), WO2013 / 142495(P&G) and WO 2013 / 151970(P&G).

[0164] A mixture of color dyes can be used.

[0165] The chromophores of the tinting dyes are preferably selected from monoazo, diazo, anthraquinone, and azazine.

[0166] Monoazo dyes preferably contain heterocycles, and most preferably are thiophene dyes. Monoazo dyes are preferably alkoxylated, and more preferably uncharged or anionic at pH 7. Alkoxylated thiophene dyes are discussed in WO 2013 / 142495 and WO2008 / 087497.

[0167] The preferred tinting dyes are selected from Direct Violet 9, Direct Violet 99, Direct Violet 35, Solvent Violet 13, Disperse Violet 28, and dyes with the following structures:

[0168]

[0169] spices

[0170] Preferably, the composition contains a fragrance. The fragrance is preferably in the range of 0.001 to 3% by weight, most preferably 0.1 to 1% by weight. Numerous examples of suitable fragrances are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide published by CFTA Publications and the OPD 1993 Chemicals Buyers Directory 80th Annual Edition published by Schnell Publishing Co.

[0171] It is common for formulations to contain multiple flavoring components. In the compositions of the present invention, it is envisioned that there are four or more, preferably five or more, more preferably six or more, or even seven or more different flavoring components.

[0172] In the fragrance blend, preferably 15-25% by weight is the top note. Top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80

[1955] ). Preferred top notes are selected from citrus oil, linalool, linalyl acetate, lavender, dihydromyrcenol, rose ether, and cis-3-hexanol.

[0173] Preferably, the laundry treatment composition does not contain peroxide bleach, such as sodium percarbonate, sodium perborate, and peracid.

[0174] polymer

[0175] The composition may contain one or more other polymers. Examples are carboxymethyl cellulose, poly(ethylene glycol), poly(vinyl alcohol), polycarboxylic acid esters such as polyacrylates, maleic acid / acrylic acid copolymers, and lauryl methacrylate / acrylic acid copolymers. Polymers that prevent dye deposition may be present in the formulation, such as poly(vinylpyrrolidone), poly(vinylpyridine-N-oxide), and poly(vinylimidazole).

[0176] enzymes

[0177] When implementing the method of the present invention, one or more enzymes are preferably present in the cleaning composition of the present invention.

[0178] Preferably, the content of each enzyme in the composition of the present invention is 0.0001% to 0.1% by weight of protein.

[0179] Enzymes under special consideration include proteases, α-amylases, cellulases, lipases, peroxidases / oxidases, pectic acid lyases, and mannanases, or mixtures thereof.

[0180] Suitable lipases include those derived from bacteria or fungi. This also includes chemically modified or protein-engineered mutants. Examples of useful lipases include lipases from the genus *Humicola* (synonyms for *Thermomyces*), such as those from *H. lanuginosa* (*T. lanuginosus*) (as described in EP 258068 and EP 305216) or from *H. insolens* (as described in WO96 / 13580), and *Pseudomonas* lipases, such as those from *P. alcaligenes* or *P. pseudoalcaligenes* (EP 218 272), *P. cepacia* (EP 331376), *P. stutzeri* (GB 1,372,034), *P. fluorescens*, and *Pseudomonas* sp. strain SD. 705 (WO 95 / 06720 and WO 96 / 27002), Pseudomonas wisconsinensis (WO 96 / 12012), Bacillus lipases, such as those from Bacillus subtilis (Dartois et al. (1993), Biochemica et Biophysica Acta, 1131, 253-360), Bacillus stearothermophilus (JP 64 / 744992) or Bacillus pumilus (WO91 / 16422).

[0181] Other examples are lipase variants, such as those described in WO 92 / 05249, WO 94 / 01541, EP 407 225, EP 260105, WO 95 / 35381, WO 96 / 00292, WO 95 / 30744, WO 94 / 25578, WO 95 / 14783, WO 95 / 22615, WO 97 / 04079, WO 97 / 07202, and WO 00 / 60063.

[0182] Preferred commercially available lipases include Lipolase TM and Lipolase Ultra TM Lipex TM and lipoclean TM (Novozymes A / S).

[0183] The method of the present invention can be carried out in the presence of phospholipases classified as EC3.1.1.4 and / or EC3.1.1.32. As used herein, the term phospholipase refers to an enzyme that is active in phospholipids.

[0184] Phospholipids, such as lecithin or phosphatidylcholine, consist of glycerol esterified with two fatty acids at the outer (sn-1) and middle (sn-2) positions and phosphated at the third position; the phosphate can also be esterified with amino alcohols. Phospholipases are enzymes involved in the hydrolysis of phospholipids. Several types of phospholipase activity can be distinguished, including phospholipases A1 and A2, which hydrolyze a fatty acyl group (at the sn-1 and sn-2 positions, respectively) to form lysophospholipids; and lysophospholipases (or phospholipase B), which hydrolyze the remaining fatty acyl group in lysophospholipids.

[0185] Phospholipase C and phospholipase D (phosphodiesterase) release diacylglycerol or phosphatidic acid, respectively.

[0186] Enzymes and photobleaching agents can exhibit some interactions, and selection should be made so that such interactions are not negative. Some negative interactions can be avoided by encapsulating one or more of the enzymes or photobleaching agents within the product and / or by other means of isolation.

[0187] Suitable proteases include those of animal, plant, or microbial origin. Microbial origin is preferred. This includes chemically modified or protein-engineered mutants. The protease can be a serine protease or a metalloproteinase, preferably an alkaline microbial protease or a trypsin-like protease. Preferred commercially available proteases include Alcalase. TM Savinase TM Prime TM Duralase TM Dyrazym TM Esperase TM Everlase TM Polarzyme TM and Kannase TM (Novozymes A / S), Maxatase TM Maxacal TM Maxapem TM Property TM Purafect TM PurafectOxP TM FN2 TM and FN3 TM (Genencor International Inc.).

[0188] The method of the present invention can be carried out in the presence of keratinases classified under EC3.1.1.74. The keratinases used according to the present invention can be from any source.

[0189] Keratinases are preferably of microbial origin, particularly bacteria, fungi, or yeast.

[0190] Suitable amylases (α and / or β) include those of bacterial or fungal origin.

[0191] This includes chemically modified or protein-engineered mutants. Amylases include, for example, α-amylases obtained from the genus *Bacillus*, such as specific strains of *Bacillus licheniformis* described in more detail in GB 1296839, or *Bacillus* strains disclosed in WO 95 / 026397 or WO 00 / 060060. Commercially available amylases are Duramyl... TM Termonyl TM Terminyl Ultra TM Natalase TM Stainzyme TM Fungaly TM and BAN TM (NovozymesA / S), Rapidase TM and Purastar TM

[0192] (From Genencor International Inc.)

[0193] Suitable cellulases include those of bacterial or fungal origin. This includes chemically modified or protein-engineered mutants. Suitable cellulases include those from the genera *Bacillus*, *Pseudomonas*, *Hydrogentoxinus*, *Fusarium*, *Clostridium*, and *Clonorthera*, such as fungal cellulases produced by *Humicolainsolens*, *Thielavia terrestris*, *Myceliophthorathermophila*, and *Fusarium oxysporum* as 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.

[0194] Commercially available cellulases include Celluzyme TM Carezyme TMCelluclean TM Endolase TM Renozyme TM (Novozymes A / S), Clazinase TM and Puradax HA TM (Genencor International Inc.) and KAC-500(B) TM (Kao Corporation)

[0195] Suitable peroxidases / oxidases include those from plant, bacterial, or fungal sources.

[0196] This includes chemically modified or protein-engineered mutants. Examples of useful peroxidases include peroxidases from the genus *Coprinus*, such as those from *C. cinereus*, and their variants, as described in WO 93 / 24618, WO 95 / 10602, and WO 98 / 15257.

[0197] Commercially available peroxidases include Guardzyme TM and Novozym TM 51004 (Novozymes A / S).

[0198] Other applicable enzymes are discussed in WO 2009 / 087524, WO 2009 / 090576, WO 2009 / 107091, WO 2009 / 111258 and WO 2009 / 148983.

[0199] Enzyme stabilizers

[0200] Any enzyme present in the composition may be stabilized using conventional stabilizers, such as polyols like propylene glycol or glycerol, sugars or sugar alcohols, lactic acid, boric acid or boric acid derivatives like aromatic borate esters, or phenyl boric acid derivatives like 4-formylphenylboronic acid, and the composition may be formulated as described, for example, in WO 92 / 19709 and WO 92 / 19708.

[0201] When the alkyl group is long enough to form a branched or cyclic chain, the alkyl group encompasses branched, cyclic, and straight-chain alkyl chains. The alkyl group is preferably straight-chain or branched, with straight-chain being the most preferred.

[0202] Unless otherwise stated, the indefinite article “a” or “one” and its corresponding definite article “the” as used herein refer to at least one, or one or more.

[0203] The invention will be further described through the following non-limiting embodiments.

[0204] Example

[0205] Example 1

[0206] The model cleaning composition was prepared using the following ingredients – see Table 1. The pH of this formulation is 6.0.

[0207]

[0208]

[0209] Table 1 - Model Cleaning Compositions

[0210] Rhamnolipid surfactants are monorhamnolipids (R1) or dirhamnolipids (R2).

[0211] For this model, a cleaning composition containing 17% by weight of total surfactant was prepared according to Table 2.

[0212]

[0213] Table 2 shows the surfactant mixtures in the cleaning compositions.

[0214] The results clearly demonstrate that the Krafft point of primary alkyl sulfates was successfully lowered by adding a combination of amphoteric surfactants and rhamnolipids in a specific ratio.

[0215] Example 2

[0216] Further examples were conducted using a total surfactant content of 17% by weight.

[0217]

[0218] The results clearly demonstrate that the Krafft point of primary alkyl sulfates was successfully lowered by adding a combination of amphoteric surfactants and rhamnolipids in a specific ratio.

[0219] Example 3

[0220] Further examples using approximately 10% by weight of total surfactant levels were conducted using different amphoteric surfactants.

[0221] This embodiment uses cocamidopropyl betaine (CAPB) as an amphoteric surfactant.

[0222]

[0223] This example demonstrates that similar results can be observed when using cocamidopropyl betaine as an amphoteric surfactant in a surfactant mixture.

Claims

1. A cleaning composition comprising: a) 1 to 30% by weight of primary alkyl sulfate surfactants; b) 1 to 10% by weight of an amphoteric surfactant selected from betaines; and c) 1 to 10% by weight of rhamnolipid biosurfactants; The ratio of primary alkyl sulfate surfactant to rhamnolipid biosurfactant is 8:1 to 1:1; and The ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 8:1 to 1:1; The primary alkyl sulfate therein is C 10 -C 20 Alkyl sulfates.

2. The composition of claim 1, wherein the betaine is a sulfobetaine.

3. The composition of claim 1 or claim 2, wherein the cleaning composition is a fluid cleaning composition.

4. The composition of claim 1 or claim 2, wherein the cleaning composition is an aqueous cleaning composition.

5. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 1 to 25% by weight of a primary alkyl sulfate.

6. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 2.5 to 20% by weight of a primary alkyl sulfate.

7. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 2.5 to 15% by weight of a primary alkyl sulfate.

8. The composition of claim 1 or claim 2, wherein the primary alkyl sulfate is C 10 -C 20 Sodium, potassium, or ammonium alkyl sulfates.

9. The composition of claim 1 or claim 2, wherein the primary alkyl sulfate is C 10 -C 20 Sodium alkyl sulfate.

10. The composition of claim 1 or claim 2, wherein the primary alkyl sulfate is sodium lauryl sulfate.

11. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 1 to 9% by weight of rhamnolipid biosurfactant.

12. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 1 to 8% by weight of rhamnolipid biosurfactant.

13. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 1.5 to 6% by weight of rhamnolipid biosurfactant.

14. The composition of claim 1 or claim 2, wherein the rhamnolipin comprises at least 50% by weight of monorhamnolipin or at least 50% by weight of dirhamnolipin.

15. The composition of claim 1 or claim 2, wherein the rhamnolipin comprises at least 60% by weight of monorhamnolipin or at least 60% by weight of dirhamnolipin.

16. The composition of claim 1 or claim 2, wherein the rhamnolipin comprises at least 70% by weight of monorhamnolipin or at least 70% by weight of dirhamnolipin.

17. The composition of claim 1 or claim 2, wherein the rhamnolipin comprises at least 80% by weight of monorhamnolipin or at least 80% by weight of dirhamnolipin.

18. The composition of claim 1 or claim 2, wherein the rhamnolipid is a dirhamnolipid of the following formula: Rha2C 8-12 C 8-12 The hydrocarbon chain can be saturated or unsaturated.

19. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 1 to 9% by weight of an amphoteric surfactant selected from betaines.

20. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 1 to 8% by weight of an amphoteric surfactant selected from betaines.

21. The composition of claim 1 or claim 2, wherein the cleaning composition comprises 1.5 to 6% by weight of an amphoteric surfactant selected from betaines.

22. The composition of claim 1 or claim 2, wherein the amphoteric surfactant is selected from cocamidopropyl betaine and lauryl hydroxysulfonate betaine.

23. The composition of claim 1 or claim 2, wherein the amphoteric surfactant is lauryl hydroxysulfonate betaine.

24. The composition of claim 1 or claim 2, wherein the composition is a household care cleaning composition and further comprises one or more enzymes selected from lipases, proteases, amylases, cellulases and mixtures thereof.

25. The composition of claim 1 or claim 2, wherein the cleaning composition has a pH of 4 to 11 when dissolved in demineralized water at 4 g / L, 293 K.

26. The composition of claim 1 or claim 2, wherein the cleaning composition has a pH of 5 to 10 when dissolved in demineralized water at 4 g / L, 293 K.

27. The composition of claim 1 or claim 2, wherein the cleaning composition has a pH of 5 to 9 when dissolved in demineralized water at 4 g / L, 293 K.

28. The composition of claim 1 or claim 2, wherein the ratio of the primary alkyl sulfate surfactant to the rhamnolipid biosurfactant is 7:1 to 1:

1.

29. The composition of claim 1 or claim 2, wherein the ratio of the primary alkyl sulfate surfactant to the amphoteric surfactant is 7:1 to 1:

1.

30. The composition of claim 1 or claim 2, wherein the ratio of the primary alkyl sulfate surfactant to the rhamnolipid biosurfactant is 6:1 to 1:

1.

31. The composition of claim 1 or claim 2, wherein the ratio of the primary alkyl sulfate surfactant to the amphoteric surfactant is 6:1 to 1:

1.

32. A method for processing a substrate, the method comprising the following steps: a) Treat the substrate with an aqueous solution of a cleaning composition as defined in any one of claims 1 to 31; as well as b) Rinse and dry the substrate.

33. The method of claim 32, wherein the substrate is selected from tableware, ceramics, glassware, plastics and metals.

34. A method for treating textiles, the method comprising the following steps: a) Treat textiles with a 1 g / L aqueous solution of the cleaning composition as defined in any one of claims 1 to 31; as well as b) Keep the aqueous solution in contact with the textile for 10 minutes to 2 days, then rinse and dry the textile.

35. Use of a combination of rhamnolipid biosurfactant and an amphoteric surfactant selected from betaines to improve the cold storage stability of a cleaning composition containing a primary alkyl sulfate as defined in any one of claims 1-31 at temperatures below 11°C.

36. The use as claimed in claim 35, wherein the cleaning composition is stored at a temperature below 10°C.

37. The use as claimed in claim 35, wherein the cleaning composition is stored at a temperature below 5°C.

38. The use as described in claim 35, wherein the betaine is a sulfobetaine.

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