Uses and cleaning compositions

Abstract

The present invention relates to the use of a combination of a rhamnolipid biosurfactant and an amphoteric surfactant selected from the group consisting of betaines, glucamides and sultaines for improving the cold cleaning performance of a cleaning composition comprising a primary alkyl sulfate surfactant at temperatures below 15°C, preferably below 12°C, more preferably 10°C and below, wherein the primary alkyl sulfate is a C 10 - C 20 alkyl sulfate.

Description

TECHNICAL FIELD

[0001] The present invention relates to the use of a combination of an amphoteric surfactant and a biosurfactant to enhance the cleaning of primary alkyl sulfate anionic surfactants at low temperatures. The present invention also relates to cleaning compositions particularly suitable for cleaning at low temperatures comprising a primary alkyl sulfate surfactant, an amphoteric surfactant and a biosurfactant. BACKGROUND

[0003] Primary alkyl sulfates are anionic surfactants which can be used for cleaning purposes. These surfactants have problems with cleaning at low temperatures, for example below 15°C.

[0004] The present invention seeks to overcome the cleaning problems of primary alkyl sulfate surfactant cleaning compositions at low temperatures, for example below 15°C. SUMMARY

[0005] We have found that by including a combination of an amphoteric surfactant and a biosurfactant, cleaning compositions containing primary alkyl sulfate surfactants have improved cleaning at temperatures below 15°C, preferably below 12°C, more preferably 10°C and below.

[0006] In a first aspect, the present invention relates to the use of a combination of a rhamnolipid biosurfactant and an amphoteric surfactant selected from the group consisting of betaines, glycolamides and sultaines to improve the cold cleaning performance of a cleaning composition containing a primary alkyl sulfate surfactant at temperatures below 15°C, preferably below 12°C, more preferably 10°C and below, wherein the primary alkyl sulfate is a C 10 - C 20 alkyl sulfate.

[0007] Preferably, in use, the ratio of primary alkyl sulfate surfactant to biosurfactant, preferably biosurfactant of microbial origin, most preferably rhamnolipid biosurfactant is from 8:1 to 1 :10, preferably from 7:1 to 1 :5, more preferably from 6:1 to 1 :2, even more preferably from 6:1 to 1 :1 ; and the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is from 8:1 to 1 :10, preferably from 7:1 to 1 :5, more preferably from 6:1 to 1 :2, even more preferably from 6:1 to 1 :1.

[0008] Preferably in use, the cleaning composition is a fluid cleaning composition, more preferably an aqueous cleaning composition.

[0009] Preferably in use, the cleaning composition comprises from 1 to 30 wt%, preferably from 1 to 25 wt%, more preferably from 2.5 to 20 wt%, most preferably from 2.5 to 15 wt% of primary alkyl sulfate.

[0010] Preferably in use, the primary alkyl sulfate is a C 10 -C 20 sodium, potassium or ammonium alkyl sulfate, even more preferably a C 10 -C 20 sodium, potassium or ammonium alkyl sulfate, most preferably sodium lauryl sulfate.

[0011] Preferably in use, the cleaning composition comprises 1 to 10 wt%, more preferably 1 to 9 wt%, more preferably 1 to 8 wt%, most preferably 1.5 to 6 wt% of rhamnolipid biosurfactant.

[0012] Preferably in use, the rhamnolipid comprises at least 50 wt% mono-rhamnolipid, more preferably at least 60 wt% mono-rhamnolipid, even more preferably 70 wt% mono-rhamnolipid, most preferably at least 80 wt% mono-rhamnolipid, or wherein 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.

[0013] Preferably in use, the rhamnolipid is a di-rhamnolipid of the formula: Rha2C 8-12 C 8-12 wherein the hydrocarbyl chain can be saturated or unsaturated.

[0014] Preferably in use, the cleaning composition comprises 1 to 10 wt%, more preferably 1 to 9 wt%, more preferably 1 to 8 wt%, most preferably 1.5 to 6 wt% of amphoteric surfactant selected from the group consisting of betaines, glycolamides and sultaines.

[0015] Preferably in use, the amphoteric surfactant is selected from the group consisting of cocamidopropyl betaine and lauryl hydroxysultaine, most preferably the amphoteric surfactant is lauryl hydroxysultaine.

[0016] Preferably in use, the composition is a household care cleaning composition.

[0017] Preferably in use, the composition further comprises one or more enzymes selected from the group consisting of lipase, protease, amylase, cellulase and mixtures thereof.

[0018] Preferably in use, the detergent composition has a pH of from 4 to 11, more preferably from 5 to 10, even more preferably from 5 to 9 when dissolved in demineralised water at 4g / L, 293K.

[0019] Preferably, in use, the composition is a cleaning composition comprising:

[0020] a) 1 to 30 wt% of a primary alkyl sulfate surfactant;

[0021] b) 1 to 10 wt.% of an amphoteric surfactant selected from the group consisting of betaines, glucamides and sultaines; and

[0022] c) 1 to 10 wt.% of a rhamnolipid biosurfactant;

[0023] wherein 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, even more preferably 6:1 to 1 :1 ; and

[0024] wherein 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, even more preferably 6:1 to 1 :1 ;

[0025] wherein the primary alkyl sulfate is C 10 -C 20 alkyl sulfate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The combination of rhamnolipid biosurfactant and amphoteric surfactant shows the advantageous effect of improving the cold cleaning performance of cleaning compositions containing primary alkyl sulfate surfactant at 10°C. The performance of PAS decreases at such low temperatures. DETAILED DESCRIPTION

[0027] The combination of amphoteric surfactant selected from the group consisting of betaines, glucamides and sultaines and rhamnolipid biosurfactant is used to enhance the cleaning of primary alkyl sulfate anionic surfactant at low temperature. As used herein, low temperature means temperatures below 15°C, preferably below 12°C, more preferably 10°C and below.

[0028] Preferably in use, the ratio of primary alkyl sulfate surfactant to rhamnolipid biosurfactant is 8:1 to 1 :10, preferably 7:1 to 1 :5, more preferably 6:1 to 1 :2, even more preferably 6:1 to 1 :1 ; and 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, even more preferably 6:1 to 1 :1.

[0029] The use of the combination of amphoteric surfactant selected from the group consisting of betaines, glucamides and sultaines and rhamnolipid biosurfactant to enhance the cleaning of primary alkyl sulfate anionic surfactant at low temperature can suitably be shown by the preferred compositions according to the present application as described in the following pages.

[0030] The use of the present application can be demonstrated by a cleaning composition comprising:

[0031] a) 1 to 30% by weight of primary alkyl sulfate surfactants;

[0032] b) 1 to 10% by weight of an amphoteric surfactant selected from betaines, glucosamides, and sulfobetaines; and,

[0033] c) 1 to 10% by weight of rhamnolipid biosurfactants;

[0034] 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

[0035] 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.

[0036] The primary alkyl sulfate therein is C 10 -C 20 Alkyl sulfates.

[0037] Primary alkyl sulfates

[0038] 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.

[0039] Primary alkyl sulfates are C 10 -C 20 Alkyl sulfates, preferably lauryl sulfates.

[0040] Primary alkyl sulfates are preferably in the form of counterions, and more preferably counterions are sodium, potassium or ammonium ions.

[0041] Examples of preferred materials include C 10 -C 20 Sodium alkyl sulfate, with sodium lauryl sulfate being the most preferred.

[0042] Primary alkyl sulfates do not include alkoxylated sulfates, meaning the term primary alkyl sulfates do not include primary ether sulfates.

[0043] The ratio of primary alkyl sulfate surfactant to rhamnolipid biosurfactant is 8:1-1:10, preferably 7:1-1:5, more preferably 6:1-1:2, and even more preferably 6:1-1:1.

[0044] The ratio of primary alkyl sulfate surfactant to amphoteric surfactant is from 8:1 to 1 :10, preferably from 7:1 to 1 :5, more preferably from 6:1 to 1 :2, even more preferably from 6:1 to 1 :1.

[0045] The ratio of primary alkyl sulfate surfactant to amphoteric surfactant and the ratio of primary alkyl sulfate surfactant to rhamnolipid biosurfactant can each individually or together also preferably be from 5:1 to 1 :1, preferably from 4:1 to 1 :1, more preferably from 3:1 to 1 :1, most preferably from 2.75:1 to 1 :1, or even 2.5 to 1 :1.

[0046] Biosurfactants

[0047] Preferably, the rhamnolipid biosurfactant is present in the formulation at from 1 to 9 wt%, more preferably from 1 to 8 wt%, most preferably from 1.5 to 6 wt%.

[0048] The biosurfactant is a rhamnolipid. These are a class of glycolipids. They are composed of rhamnose combined with a beta-hydroxy fatty acid. Rhamnose is a sugar. Fatty acids are ubiquitous in animals and plants.

[0049] Rhamnolipids are discussed by E. Deziel et al in Applied Microbiology and Biotechnology (2010) 86: 1323-1336. Rhamnolipids are produced by Evonik, Stepan, Glycosurf, AGAE Technologies and Urumqi Unite Bio-Technology Co., Ltd. Rhamnolipids can be produced by strains of the bacterium Pseudomonas Aeruginosa. There are two main groups of rhamnolipids: mono-rhamnolipids and di-rhamnolipids.

[0050] Mono-rhamnolipids have a mono-rhamnose sugar ring. A typical mono-rhamnolipid produced by Pseudomonas Aeruginosa is L-rhamnosyl-beta-hydroxydecanoyl-beta-hydroxydecanoate (Rha-C 10 C 10 ). It can be referred to as Rha-C 10 -C 10 , having the formula C 26 H 48 O9. Mono-rhamnolipids have a mono-rhamnose sugar ring.

[0051] The IUPAC name is 3-[3-[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxanyl-2- yl]oxydecanoyloxy]decanoic acid.

[0052] Di-rhamnolipids have two rhamnose sugar rings. A typical di-rhamnolipid is L-rhamnosyl-L-rhamnosyl-β-hydroxydecanoyl-β-hydroxydecanoate (Rha2C 10 C 10 ). It can be referred to as Rha-Rha-C- 10 -C- 10 , having the formula C 32 H 58 O 13 .

[0053] The IUPAC name is 3-[3-[4,5-dihydroxy-6-methyl-3-(3,4,5-trihydroxy-6- methyloxan-2-yl)oxanyloxyoxan-2-yl]oxydecanoyloxy]decanoic acid.

[0054] In practice, depending on the carbon source and bacterial strain, a number of other minor components with different alkyl chain length combinations exist in combination with the more common rhamnolipids described above. The ratio of mono- and di-rhamnolipids can be controlled by the production method. Some bacteria produce only mono-rhamnolipids, see US 5767090: Example 1, some enzymes can convert mono-rhamnolipids into di-rhamnolipids.

[0055] In various publications, mono-rhamnolipids have the designation Rha-, which can be abbreviated as Rh or RL2. Similarly, di-rhamnolipids have the designation Rha-Rha or Rh-Rh- or RL1. For historical reasons, "rhamnolipid 2" is the mono-rhamnolipid and "rhamnolipid 1" is the di-rhamnolipid. This leads to some ambiguity in the use of "RL1" and "RL2" in the literature.

[0056] In this patent specification we use the terms mono- and di-rhamnolipids to avoid this possible confusion. However, if abbreviations are used, R1 is the mono-rhamnolipid and R2 is the di-rhamnolipid. For more information on the confusion of terms in the prior art see the introduction of US 4814272.

[0057] The following rhamnolipids have been detected as produced by the following bacteria: (C12:1, C14:1 indicates a fatty acyl chain with a double bond).

[0058] Rhamnolipids produced by Pseudomonas aeruginosa (mono-rhamnolipids):

[0059] Rha-C8-C10, Rha-C10-C8, Rha-C-10-C10, Rha-C10-C12, Rha-C10-C12:1, Rha-C12-C10, Rha-C12:1-C10.

[0060] Rhamnolipids produced by Pseudomonas aeruginosa (di-rhamnolipids):

[0061] 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.

[0062] Rhamnolipids produced by Pseudomonas aeruginosa (not identified as mono- or di-rhamnolipids):

[0063] 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.

[0064] Rhamnolipids (monorhamnolipids only) produced by Pseudomonas chlororaphis:

[0065] 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.

[0066] Rhamnolipids (dirhamnolipids only) produced by Burkholdera pseudomallei:

[0067] Rha-Rha-C14-C14.

[0068] Rhamnolipids (dirhamnolipids only) produced by Burkholdera plantarii (a Pseudomonas):

[0069] Rha-Rha-C14-C14.

[0070] 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.

[0071] By evaluation and selection, P. aeruginosa can be isolated to produce rhamnolipids in higher concentrations and more efficiently. Strains can also be selected that produce fewer side products and metabolize different feedstocks or contaminants. This production is greatly influenced by the environment in which the bacteria grow.

[0072] Typical di-rhamnolipids are L-rhamnopyranosyl-L-rhamnopyranosyl-β- hydroxydecanoyl-β-hydroxydecanoate (having the formula C 32 H 58 O 13 Rha2C 10 C 10 ).

[0073] In practice, depending on the carbon source and the bacterial strain, a number of other minor components with different alkyl chain length combinations exist in combination with the more common rhamnolipids above. The ratio of mono- and di-rhamnolipids can be controlled by the production method. Some bacteria produce only mono-rhamnolipids, see US 5767090: Example 1, and some enzymes can convert mono- to di-rhamnolipids.

[0074] Preferably, the rhamnolipids are selected from:

[0075] - rhamnolipids produced by P. aeruginosa (mono-rhamnolipids):

[0076] Rha-C8-C10, Rha-C10-C8, Rha-C10-C10, Rha-C10-C12, Rha-C10-C12:1, Rha-C12-C10, Rha-C12:1-C10.

[0077] - rhamnolipids produced by P. chlororaphis (only mono-rhamnolipids):

[0078] 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.

[0079] - mono-rhamnolipids can also be produced from P. putida by introducing the genes rhIA and rhIB from P. aeruginosa [Cha et al. Bioresour Technol. 2008. 99(7):2192-9].

[0080] - rhamnolipids produced by P. aeruginosa (di-rhamnolipids):

[0081] 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

[0082] - rhamnolipids produced by Burkholderia pseudomallei (Pseudomonas) (only di-rhamnolipids):

[0083] Rha-Rha-C14-C14.

[0084] - rhamnolipids produced by Burkholderia pseudomallei (Pseudomonas) (only di-rhamnolipids):

[0085] Rha-Rha-C14-C14.

[0086] - rhamnolipids produced by Pseudomonas aeruginosa which were not initially identified as mono- or di-rhamnolipids:

[0087] 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.

[0088] Most preferably, the rhamnolipid is L-rhamnosyl-beta-hydroxydecanoyl-beta- hydroxydecanoate produced by Pseudomonas aeruginosa (having the formula RhaC 26 H 48 O9. 10 C 10 ).

[0089] Preferably, the rhamnolipid comprises at least 50 wt.% mono-rhamnolipid, more preferably at least 60 wt.% mono-rhamnolipid, even more preferably 70 wt.% mono-rhamnolipid, most preferably at least 80 wt.% mono-rhamnolipid; or wherein 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.

[0090] Preferably, the rhamnolipid is a di-rhamnolipid of the formula Rha2C 8-12 C 8-12 . Preferred alkyl chain lengths are C8-C 12 The hydrocarbyl chains can be saturated or unsaturated.

[0091] Amphoteric surfactants

[0092] The surfactant combination comprises 1 to 10 wt.% of amphoteric (also known as zwitterionic) surfactant.

[0093] Preferably, the cleaning composition comprises 1 to 9 wt.%, preferably 1 to 8 wt.%, most preferably 1.5 to 6 wt.% of amphoteric surfactant.

[0094] The amphoteric surfactant is selected from the group consisting of betaines, glycolamides and sulfo-betaines, preferably from cocamidopropyl betaine and lauryl hydroxysultaine, most preferably the amphoteric surfactant is lauryl hydroxysultaine.

[0095] Cleaning compositions

[0096] The composition is a cleaning composition which can be used for cleaning substrates, for example surfaces, including for household and personal care purposes. The composition is preferably a fluid cleaning composition, more preferably an aqueous cleaning composition.

[0097] Preferably, the cleaning composition is a household care composition.

[0098] Such a composition can be used for example for hand dishwashing to clean substrates such as dishes, crockery, glassware, plastics and metals.

[0099] Such a composition can be used for example for laundry purposes to wash textiles.

[0100] Preferably, the cleaning composition is a laundry detergent composition, more preferably a liquid laundry detergent or a powder detergent.

[0101] pH

[0102] Preferably, the detergent composition has a pH of 4 to 11, more preferably 5 to 10, even more preferably 5 to 9 when dissolved in demineralised water at 4 g / L, 293 K.

[0103] Preferably, the laundry detergent composition has a pH of 6 to 11, more preferably 6 to 9 when dissolved in demineralised water at 4 g / L, 293 K, when it is a liquid laundry detergent.

[0104] Additional surfactants

[0105] An additional surfactant can be present in the composition.

[0106] Preferably, the cleaning composition comprises 0 to 20 wt.%, more preferably 0 to 10 wt.% of additional surfactant.

[0107] These are preferably selected from anionic and non-ionic surfactants.

[0108] Typically, the nonionic and anionic surfactants of the surfactant system can be selected from "Surface Active Agents with Special Reference to Their Application in Detergency" by A.Bcatty and M.Naggar, 2nd Edition, 1966, "The Chemistry and Function of Detergents" by M.R.Porter, 1985, and "Surface Active Agents and Detergents" by Schwartz, Perry and Berch, Vols. I and II, 1949, 1958, published by Interscience. The preferred surfactants are those which are saturated.

[0109] Preferred nonionic detergent compounds which can be used include the reaction products of compounds having hydrophobic groups, for example, aliphatic linear or branched linear or branched chain primary or secondary alcohols, acids, amides with reactive hydrogen atoms, with alkylene oxides, especially with ethylene oxide either alone or with propylene oxide. A specific nonionic detergent compound is the condensation product of an aliphatic linear or branched linear or branched chain primary or secondary alcohol having from 5 to 40 EO, preferably 7 EO to 9 EO, with ethylene oxide.

[0110] Preferred anionic detergent compounds which can be used are generally water-soluble alkali metals 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. An example of a suitable synthetic anionic detergent compound is alkyl C 10 - C 20 Sodium and potassium benzene sulphonates, especially linear secondary alkyl C 10 - C 15 Sodium alkyl naphthalene sulphonates; and sodium alkyl glyceryl ether sulphonates, especially those derived from higher alcohols of tallow or coconut oil and synthetic alcohols derived from petroleum. The preferred anionic detergent compound is C 11 - C 15 Sodium alkyl benzene sulphonates. Also applicable are surfactants such as those described in EP-A-328177 (Unilever) which show salt sensitivity, alkyl polyglycoside surfactants described in EP-A-070074 and alkyl monoglycosides.

[0111] The preferred surfactant system is a mixture of anionic and nonionic detergent active materials.

[0112] Preferably, the additional surfactant is predominantly anionic by weight.

[0113] Cleaning boosters

[0114] A cleaning booster can preferably be present in the composition.

[0115] The composition preferably comprises from 0.5 wt% to 15 wt%, more preferably from 0.75 wt% to 15 wt%, even more preferably from 1 wt% to 12 wt%, most preferably from 1.5 wt% to 10 wt% of a cleaning booster selected from an anti-redeposition polymer; a soil release polymer; an alkoxylated polycarboxylate as described in WO2019 / 008036 and WO2019 / 007636; and mixtures thereof.

[0116] Anti-redeposition polymers

[0117] Preferred anti-redeposition polymers include alkoxylated polyamines.

[0118] Preferred alkoxylated polyamines include alkoxylated polyethyleneimines and / or alkoxylated polypropyleneimines. The polyamine can be linear or branched. It can be branched to the extent that it is a dendrimer. The alkoxylation can generally be ethoxylation or propoxylation, or a mixture of the two. When the nitrogen atoms are alkoxylated, the preferred average degree of alkoxylation is from 10 to 30, preferably from 15 to 25. A preferred material is an ethoxylated polyethyleneimine having an average degree of ethoxylation of from 10 to 30, preferably from 15 to 25, in which the nitrogen atoms are ethoxylated.

[0119] Soil release polymers

[0120] Preferably, the soil release polymer is a polyester soil release polymer.

[0121] Preferred soil release polymers include those described in WO2014 / 029479 and WO2016 / 005338.

[0122] Preferably, the polyester-based soil release polymer is a polyester according to the following formula (I):

[0123]

[0124] wherein

[0125] R 1 and R 2 are independently of each other X-(OC2H4) n -(OC3H6) m wherein X is C 1-4 alkyl and is preferably methyl, the -(OC2H4) groups and the -(OC3H6) groups are arranged blockwise, and the blocks consisting of -(OC3H6) groups are bound to COO groups or are HO-(C3H6), and are preferably independently of each other X-(OC2H4) n -(OC3H6) m ,

[0126] n is a molar average number of 12 to 120, preferably 40 to 50,

[0127] m is a molar average number of 1 to 10, preferably 1 to 7, and

[0128] a is a molar average number of 4 to 9.

[0129] Preferably, the polyester is provided as a reactive blend comprising:

[0130] A) 45 to 55 wt.-% of a reactive blend of one or more polyesters according to the following formula (I)

[0131]

[0132] wherein

[0133] R 1 and R 2 are independently of each other X-(OC2H4) n -(OC3H6) m , wherein X is C 1-4 alkyl and preferably methyl, the -(OC2H4) groups and the -(OC3H6) groups are arranged in a blockwise manner, and the block consisting of -(OC3H6) groups is bound to the COO group or is HO-(C3H6), and preferably are independently of each other X-(OC2H4) n -(OC3H6) m

[0134] n is a molar average number of 12 to 120, preferably 40 to 50,

[0135] m is a molar average number of 1 to 10, preferably 1 to 7, and

[0136] a is a molar average number of 4 to 9, and

[0137] B) 10 to 30 % by weight of the reactive blend of one or more alcohols selected from the group consisting of ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol and butyl glycol, and

[0138] C) 24 to 42 % by weight of the reactive blend of water.

[0139] Alkoxylated polycarboxylates

[0140] ​The alkoxylated polycarboxylic acid ester can be obtained by first reacting an aromatic polycarboxylic acid containing at least three carboxylic acid units or anhydride derived therefrom, preferably an aromatic polycarboxylic acid containing three or four carboxylic acid units or anhydride derived therefrom, more preferably an aromatic polycarboxylic acid containing three carboxylic acid units or anhydride derived therefrom, even more preferably trimellitic acid or trimellitic anhydride, most preferably trimellitic anhydride, with an alcohol alkoxylate, and in a second step reacting the resulting product with an alcohol or mixture of alcohols, preferably with a Ci6 / Ci8alcohol.

[0141] Further ingredients

[0142] The cleaning composition can comprise any of these further preferred ingredients.

[0143] One or more of these further ingredients are particularly useful if the cleaning composition is a home care composition, particularly if it is for hand dishwashing or laundry purposes.

[0144] Builder or complexing agent

[0145] The builder material can be selected from the group consisting of 1) calcium sequestering material, 2) precipitation material, 3) calcium ion exchange material and 4) mixtures thereof.

[0146] Examples of calcium sequestering builder include alkali metal polyphosphates such as sodium tripolyphosphate and organic sequestering agents such as ethylenediaminetetraacetic acid.

[0147] Examples of precipitation builder material include sodium orthophosphate and sodium carbonate.

[0148] Examples of calcium ion exchange builder material include various types of water-insoluble crystalline or amorphous aluminosilicates, of which the zeolites are the best known representatives, for example zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and P-type zeolites as described in EP-A-0 384 070.

[0149] The composition can also contain from 0 to 65% of a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or other builders mentioned below. Many builders are also bleach stabilizers due to their ability to complex metal ions.

[0150] Zeolites and carbonates (including bicarbonates and sesquicarbonates) are preferred builders.

[0151] The composition can contain a crystalline aluminosilicate as a builder, preferably an alkali metal aluminosilicate, more preferably sodium aluminosilicate. This is typically present at a level of less than 15 wt%. The aluminosilicate is a material having the general formula:

[0152] 0.8 to 1.5 M 20Al2O3.0.8-6SiO2

[0153] where M is a monovalent cation, preferably sodium. These materials contain some bound water and need to have 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 reaction between sodium silicate and sodium aluminate, 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.

[0154] As an alternative or in addition to the aluminosilicate builder, a phosphate builder can be used. In the art, the term "phosphate" includes diphosphate, triphosphate and phosphonate species. Other forms of builder include silicates, for example soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from Hoechst).

[0155] Preferably, the laundry detergent formulation comprises less than 1 wt% of phosphate. If a builder is included, preferably the laundry detergent formulation is carbonate built.

[0156] Fluorescent agent

[0157] The composition preferably comprises a fluorescent agent (optical brightener).

[0158] Fluorescent agents are well known and many such fluorescent agents are commercially available. Typically, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example sodium salts. The total amount of fluorescent agent or agents used in the composition is typically from 0.005 to 2 wt%, more preferably from 0.01 to 0.1 wt%. Preferred classes of fluorescent agent are: the bis-styryl biphenyl compounds, such as Tinopal (Trade Mark) CBS-X, the bis aminostyryl compounds, such as Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH, and the pyrazoline compounds, such as Blankophor SN. Preferred fluorescent agents are: 2-(4-styryl-3-sulfophenyl)-2H-napthol[1,2-d]triazole sodium, 4,4'-bis{[(4-anilino-6-(N methyl-N-2 hydroxyethyl) amino-1,3,5-triazin-2-yl)]amino}stilbene-2-2' disulfic acid disodium, 4,4'-bis{[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)]amino}stilbene-2-2' disulfic acid disodium, and 4,4'-bis(2-sulfostyryl)biphenyl disodium.

[0159] It is preferred that the aqueous solution used in the process has a fluorescent agent present. When a fluorescent agent is present in the aqueous solution used in the process, it is preferably in the range of 0.0001 g / l to 0.1 g / l, preferably 0.001 to 0.02 g / l.

[0160] dye

[0161] The composition preferably comprises a dye. Dyes are discussed in K. Hunger (ed). Industrial Dyes: Chemistry, Properties, Applications (Weinheim: Wiley-VCH 2003). Organic dyes are listed in the Colour Index (Society of Dyers and Colourists and the American Association of Textile Chemists and Colorists).

[0162] Preferred dye chromophores are azo, azine, anthraquinone, phthalocyanine and triphenylmethane.

[0163] Azo, anthraquinone, phthalocyanine and triphenylmethane dyes preferably carry a net anionic charge or are uncharged. Azine dyes preferably carry a net anionic or cationic charge.

[0164] Preferred non-shading dyes are selected from blue dyes, most preferably anthraquinone dyes bearing sulfonate groups and triphenylmethane dyes bearing sulfonate groups. 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 granules with non-shading dyes provide an attractive colour to the wash liquor.

[0165] Blue or violet shading dyes are most preferred. The shading dyes deposit onto the fabric during the wash or rinse step of the wash process, thereby providing a visible shade to the fabric. In this regard, the dye imparts a blue or violet shade to a white cloth with a shade angle of 240 to 345, more preferably 260 to 320, most preferably 270 to 300. The white cloth used in this test is a bleached non-mercerised woven cotton sheet.

[0166] Shading 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 2011 / 011799 (P&G), WO 2012 / 054820 (P&G), WO 2013 / 142495 (P&G) and WO 2013 / 151970 (P&G).

[0167] Mixtures of shading dyes can be used.

[0168] The shading dye chromophore is most preferably selected from monoazo, disazo, anthraquinone and azine.

[0169] Monoazo dyes preferably contain a heterocycle, and most preferably are thiophene dyes. Monoazo dyes are preferably alkoxylated, and preferably uncharged or negatively charged at pH = 7. Alkoxylated thiophene dyes are discussed in WO 2013 / 142495 and WO 2008 / 087497.

[0170] Most preferred shading dyes are selected from Direct Violet 9, Direct Violet 99, Direct Violet 35, Solvent Violet 13, Disperse Violet 28, dyes of the following structures:

[0171]

[0172]

[0173] Perfume

[0174] Preferably, the composition comprises a perfume. The perfume is preferably in the range of 0.001 to 3 wt.%, most preferably 0.1 to 1 wt.%. Many examples of suitable perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications, and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.

[0175] It is common for a plurality of perfume components to be present in a formulation. In the composition of the present application, it is envisaged that there are four or more, preferably five or more, more preferably six or more, or even seven or more different perfume components.

[0176] In the perfume mixture, preferably 15-25 wt.% is a 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 the group consisting of citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol.

[0177] It is preferred that the laundry treatment composition is free of peroxygen bleach, such as sodium percarbonate, sodium perborate and peracid.

[0178] Polymer

[0179] The composition can comprise one or more additional polymers. Examples are carboxymethylcellulose, poly(ethylene glycol), poly(vinyl alcohol), polycarboxylates such as polyacrylates, maleic / acrylic acid copolymers and lauryl methacrylate / acrylic acid copolymers. Polymers which prevent dye deposition can be present in the formulation, such as poly(vinylpyrrolidone), poly(vinylpyridine-N-oxide) and poly(vinylimidazole).

[0180] Enzyme

[0181] When the method of the present application is carried out, one or more enzymes are preferably present in the cleaning composition of the present application.

[0182] Preferably, the level of each enzyme in the composition of the present application is from 0.0001 wt.% to 0.1 wt.% protein.

[0183] Enzymes of particular interest include proteases, alpha-amylases, cellulases, lipases, peroxidases / oxidases, pectate lyases, and mannanases, or mixtures thereof.

[0184] Suitable lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutant forms are included. Examples of useful lipases include lipases from Humicola (synonym Thermomyces), e.g. from H. lanuginosa (T. lanuginosus) (as described in EP 258068 and EP 305216) or from H. insolens (as described in WO 96 / 13580), Pseudomonas lipases, e.g. from P. alcaligenes or P. pseudoalcaligenes (EP 218 272), P. cepacia (EP 331 376), P. stutzeri (GB 1,372,034), P. fluorescens, Pseudomonas sp. strain SD 705 (WO 95 / 06720 and WO 96 / 27002), P. wisconsinensis (WO 96 / 12012), Bacillus lipases, e.g. from B. subtilis (Dartois et al. (1993), Biochemica et Biophysica Acta, 1131, 253-360), B. stearothermophilus (JP 64 / 744992) or B. pumilus (WO 91 / 16422).

[0185] 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 and WO 97 / 07202, WO 00 / 60063.

[0186] Preferred commercially available lipases include Lipolase TM and Lipolase Ultra TM , Lipex TM and lipoclean TM (Novozymes A / S).

[0187] The method of the present application can be carried out in the presence of a phospholipase classified as EC 3.1.1.4 and / or EC 3.1.1.32. As used herein, the term phospholipase is an enzyme active on phospholipids.

[0188] Phospholipids, such as lecithin or phosphatidylcholine, consist of glycerol esterified with two fatty acids in the outer (sn-1) and middle (sn-2) positions and esterified with phosphoric acid in the third position; the phosphoric acid can in turn be esterified with an amino alcohol. Phospholipases are enzymes involved in the hydrolysis of phospholipids. Several types of phospholipase activity can be distinguished, including phospholipase Al and A2, which hydrolyze one fatty acyl group (in the sn-1 and sn-2 positions, respectively) to form lysophospholipids; and lysophospholipases (or phospholipase B), which can hydrolyze the remaining fatty acyl group in lysophospholipids.

[0189] Phospholipase C and phospholipase D (phosphodiesterase) release diacylglycerol or phosphatidic acid, respectively.

[0190] Enzymes and photobleaches can show some interaction, and should be selected so that this interaction is not negative. Some negative interactions can be avoided by encapsulating one or the other of the enzyme or photobleach within the product and / or by other isolation.

[0191] Suitable proteases include those of animal, vegetable or microbial origin. Preference is given to microbial origin. Chemically modified or protein engineered mutants are included. The protease can be a serine protease or metalloprotease, preferably an alkaline microbial protease or trypsin-like protease. Preferred commercially available protease enzymes include Alcalase®, TM Savinase® TM Primase TM Duralase TM Dyrazym TM Esperase TM Everlase TM Polarzyme TM Kannase TM (Novozymes A / S), Maxatase TM Maxacal TM Maxapem TM Properase TM Purafect TM Purafect OxP TM FN2 TM FN3 TM (Genencor International Inc.).

[0192] The process of the application can be carried out in the presence of a cutinase classified in EC 3.1.1.74. The cutinase used according to the application can be of any origin.

[0193] Preferably the cutinase is of microbial origin, in particular of bacterial, fungal or yeast origin.

[0194] Suitable amylases (alpha and / or beta) include those of bacterial or fungal origin.

[0195] including chemically modified or protein engineered mutants. Amylases include, for example, alpha-amylases, obtained from Bacillus, e.g. a special strain of Bacillus licheniformis, as 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 Duramyl TM , Termamyl TM , Termamyl Ultra TM , Natalase TM , Stainzyme TM , Fungamyl TM , and BAN TM (Novozymes A / S), Rapidase TM , and Purastar TM (Genencor International Inc.).

[0196] Suitable cellulases include those of bacterial or fungal origin. Including chemically modified or protein engineered mutants. Suitable cellulases include cellulases from Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, Myceliopthora, e.g. fungal cellulases produced by Humicola insolens, Thielavia terrestris, Myceliopthora thermophila, 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.

[0197] Commercially available cellulases include Celluzyme TM , Carezyme TM , CellucleanTM Endolase TM Renozyme (Novozymes A / S), Clazinase TM and Puradax HA TM (Genencor International Inc.) and KAC-500 (B) TM (Kao Corporation).

[0198] Suitable peroxidases / oxidases include those of plant, bacterial or fungal origin.

[0199] including chemically modified or protein engineered mutants. Examples of useful peroxidases include peroxidases from Coprinus, for example, from C. cinereus, and variants thereof, as described in WO 93 / 24618, WO 95 / 10602, and WO 98 / 15257.

[0200] Commercially available peroxidases include Guardzyme TM and Novozym TM 51004 (Novozymes A / S).

[0201] Other enzymes suitable for use are discussed in WO 2009 / 087524, WO 2009 / 090576, WO 2009 / 107091, WO 2009 / 1 1258, and WO 2009 / 148983.

[0202] Enzyme Stabilizers

[0203] Any enzyme present in the composition can be stabilized using a conventional method, for example, by the addition of a protease inhibitor, abacterial static agent, and / or a chelating agent. Such stabilizers can be used in combination with each other and / or with stabilizers described above. Examples of suitable stabilizers include sodium thioglycolate, sodium deoxycholate, sodium cholate, sodium benzoate, sodium nitrate, sorbic acid, p-hydroxybenzoic acid, 4- formylphenylboronic acid, and sodium glycolate. The composition can be formulated as described in, for example, WO 92 / 19709 and WO 92 / 19708.

[0204] Alkyl groups encompass branched, cyclic, and straight chain alkyl chains when the alkyl groups are long enough to form branched or cyclic chains. Alkyl groups are preferably straight chain or branched, most preferably straight chain.

[0205] As used herein, the indefinite articles "a" or "an," and their corresponding plural forms, "at least one," and "one or more" mean "one or more than one" unless otherwise indicated.

[0206] The present application will be further described by the following non-limiting examples.

[0207] Examples

[0208] Example 1

[0209] Various solutions were prepared containing either a single surfactant system or mixtures of PAS, HS and rhamnolipid.

[0210] Materials used

[0211] PAS = Sodium Lauryl Sulfate (SLS) - Stepanol WA - Extra HP - Stepan

[0212] HS = Lauryl Hydroxyl Sultaine (HS) - Mackam LHS - GN - Solvay

[0213] R2 = Rhamnolipid - Rewoferm - Evonik

[0214] Cleaning measurements

[0215] Tergotometer evaluation of cleaning performance of formulations was evaluated under the following conditions

[0216] • Temperature - 10°C or 25°C

[0217] • Liquor: Cloth ratio - 100:1

[0218] • Water type - Demineralised

[0219] • Stain - CS46b (fried fat with purple dye on textile cotton)

[0220] • Wash time - 30 minutes

[0221] • Agitation rate - 100 rpm

[0222] • Ballast type - Textile cotton

[0223] • Ballast mass - 10g

[0224] • Formulation dosage - 2g / L except for the PAS:HS:R2 formulation (8:4.5:4.5) where the dosage was reduced to 1.65g / L to balance the active levels throughout the test.

[0225] • 1 wash in 1 L of demineralised water

[0226] Details of formulations tested (14% active except for the PAS:HS:R2 formulation which was prepared at 17%):

[0227] Ingredients Level (wt. %) PAS 14 PAS:HS 11:3 PAS:R2 11:3 PAS:HS:R2 8:4.5:4.5

[0228] Table 1. Surfactant mixtures of the compositions tested

[0229] PAS, PAS:HS and PAS:R2 are 14 wt% surfactant active compositions dosed at 2 g / L. PAS:HS:R2 is a 17 wt% surfactant active composition dosed at 1.65 g / L. This was done to balance the surfactant active level used across all test compositions.

[0230] PAS - 14% solution of Stepanol WA-Extra HP in demineralised water

[0231] PAS:HS - 11% Stepanol WA-Extra HP, 3% Mackam LHS-GN in demineralised water

[0232] PAS:R2 - 11% Stepanol WA-Extra HP, 3% Rewoferm in demineralised water

[0233] PAS:HS:R2 - 8% Stepanol WA-Extra HP, 4.5% Mackam LHS-GN, 4.5% Rewoferm in demineralised water

[0234] Cleaning results are shown in Table 2. Figure 1 Cleaning performance was measured by ASRI, which measures the improvement in stain removal for the treatment of the soiled articles with the compositions in Table 1. ASRI is the improvement in stain removal relative to the soiled articles treated with the PAS alone.

[0235] Figure 1 The combination of rhamnolipid biosurfactant and amphoteric surfactant was shown to improve the cold cleaning performance at 10°C of a cleaning composition containing primary alkyl sulfate surfactant. The performance of PAS is reduced at such low temperature (10°C) compared to 25°C. While the inclusion of either the biosurfactant (rhamnolipid) or the amphoteric surfactant (while keeping the overall surfactant level the same) slightly improves cleaning, the combination of both the biosurfactant (rhamnolipid) and the amphoteric surfactant together improve the cold cleaning (10°C) performance of the PAS surfactant to a level higher than that seen for PAS alone at 25°C.

[0236] These results show that the combination of biosurfactant and amphoteric surfactant improves the cold cleaning performance at 10°C of a cleaning composition containing primary alkyl sulfate surfactant.

Claims

1. Use of a combination of rhamnolipid biosurfactant and an amphoteric surfactant selected from sulfobetaines for improving the cold cleaning performance of a cleaning composition containing a primary alkyl sulfate surfactant at temperatures below 15°C, wherein the primary alkyl sulfate is C 10 -C 20 Alkyl sulfates.

2. The use according to claim 1, wherein the temperature is below 12°C.

3. The use according to claim 1, wherein the temperature is 10°C or lower.

4. The use according to any one of claims 1-3, wherein the ratio of primary alkyl sulfate surfactant to rhamnolipid biosurfactant is 8:1 to 1:10; and the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 8:1 to 1:

10.

5. The use according to claim 4, wherein the ratio of primary alkyl sulfate surfactant to rhamnolipid biosurfactant is 7:1 to 1:

5.

6. The use according to claim 4, wherein the ratio of primary alkyl sulfate surfactant to rhamnolipid biosurfactant is 6:1 to 1:

2.

7. The use according to claim 4, wherein the ratio of primary alkyl sulfate surfactant to rhamnolipid biosurfactant is 6:1 to 1:

1.

8. The use according to claim 4, wherein the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 7:1 to 1:

5.

9. The use according to claim 4, wherein the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 6:1 to 1:

2.

10. The use according to claim 4, wherein the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 6:1 to 1:

1.

11. The use according to any one of claims 1-3, wherein the cleaning composition is a fluid cleaning composition.

12. The use according to any one of claims 1-3, wherein the cleaning composition is an aqueous cleaning composition.

13. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1 to 30% by weight of a primary alkyl sulfate.

14. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1 to 25% by weight of a primary alkyl sulfate.

15. The use according to any one of claims 1-3, wherein the cleaning composition comprises 2.5 to 20% by weight of a primary alkyl sulfate.

16. The use according to any one of claims 1-3, wherein the cleaning composition comprises 2.5 to 15% by weight of a primary alkyl sulfate.

17. The use according to any one of claims 1-3, wherein the primary alkyl sulfate is C 10 -C 20 Sodium, potassium, or ammonium alkyl sulfates.

18. The use according to any one of claims 1-3, wherein the primary alkyl sulfate is C 10 -C 20 Sodium alkyl sulfate.

19. The use according to any one of claims 1-3, wherein the primary alkyl sulfate is sodium lauryl sulfate.

20. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1 to 10% by weight of rhamnolipid biosurfactant.

21. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1 to 9% by weight of rhamnolipin biosurfactant.

22. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1 to 8% by weight of rhamnolipid biosurfactant.

23. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1.5 to 6% by weight of rhamnolipid biosurfactant.

24. The use according to any one of claims 1-3, wherein the rhamnolipid comprises at least 50% by weight of monorhamnolipid, or wherein the rhamnolipid comprises at least 50% by weight of dirhamnolipid.

25. The use according to claim 24, wherein the rhamnolipid comprises at least 60% by weight of monorhamnolipid.

26. The use according to claim 24, wherein the rhamnolipid comprises at least 70% by weight of monorhamnolipid.

27. The use according to claim 24, wherein the rhamnolipin comprises at least 80% by weight of monorhamnolipin.

28. The use according to claim 24, wherein the rhamnolipin comprises at least 60% by weight of dirhamnolipin.

29. The use according to claim 24, wherein the rhamnolipin comprises at least 70% by weight of dirhamnolipin.

30. The use according to claim 24, wherein the rhamnolipin comprises at least 80% by weight of dirhamnolipin.

31. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1 to 10% by weight of an amphoteric surfactant.

32. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1 to 9% by weight of an amphoteric surfactant.

33. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1 to 8% by weight of an amphoteric surfactant.

34. The use according to any one of claims 1-3, wherein the cleaning composition comprises 1.5 to 6% by weight of an amphoteric surfactant.

35. The use according to any one of claims 1-3, wherein the amphoteric surfactant is lauryl hydroxysulfonate betaine.

36. The use according to any one of claims 1-3, wherein the composition is a household care cleaning composition.

37. The use according to any one of claims 1-3, wherein the composition further comprises one or more enzymes selected from lipases, proteases, amylases, cellulases and mixtures thereof.

38. The use according to any one of claims 1-3, wherein the composition has a pH of 4 to 11 when dissolved in demineralized water at 4 g / L, 293 K.

39. The use according to any one of claims 1-3, wherein the composition has a pH of 5 to 10 when dissolved in demineralized water at 4 g / L, 293 K.

40. The use according to any one of claims 1-3, wherein the composition has a pH of 5 to 9 when dissolved in demineralized water at 4 g / L, 293 K.

41. The use according to any one of claims 1-3, wherein the composition is 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 sulfobetaines; and c) 1 to 10% by weight of rhamnolipid biosurfactants; The ratio of primary alkyl sulfate surfactant to biosurfactant is 8:1 to 1:10; and The ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 8:1 to 1:10; The primary alkyl sulfate therein is C 10 -C 20 Alkyl sulfates.

42. The use according to claim 41, wherein the ratio of primary alkyl sulfate surfactant to biosurfactant is from 7:1 to 1:

5.

43. The use according to claim 41, wherein the ratio of primary alkyl sulfate surfactant to biosurfactant is 6:1 to 1:

2.

44. The use according to claim 41, wherein the ratio of primary alkyl sulfate surfactant to biosurfactant is 6:1 to 1:

1.

45. The use according to claim 41, wherein the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is from 7:1 to 1:

5.

46. ​​The use according to claim 41, wherein the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 6:1 to 1:

2.

47. The use according to claim 41, wherein the ratio of primary alkyl sulfate surfactant to amphoteric surfactant is 6:1 to 1:1.

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