CN112119147B - cleaning composition - Google Patents

cleaning composition Download PDF

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Publication number
CN112119147B
CN112119147B CN201980032774.3A CN201980032774A CN112119147B CN 112119147 B CN112119147 B CN 112119147B CN 201980032774 A CN201980032774 A CN 201980032774A CN 112119147 B CN112119147 B CN 112119147B
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liquid cleaning
cleaning composition
surfactant
rhamnolipid
composition
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CN112119147A (en
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C·A·琼斯
P·S·史蒂文森
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Unilever IP Holdings BV
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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/94—Mixtures with anionic, cationic or non-ionic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3715—Polyesters or polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3723—Polyamines or polyalkyleneimines
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/662—Carbohydrates or derivatives
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/667—Neutral esters, e.g. sorbitan esters
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/90—Betaines

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

Abstract

The present invention provides a liquid cleaning composition comprising: a) 5-70 wt% of a surfactant system comprising: (i) at least one anionic or nonionic surfactant; (ii) A rhamnolipid biosurfactant present in an amount ranging from 1 to 95 wt% of the total surfactant in the surfactant system; (iii) 0.5-10 wt% of a zwitterionic surfactant; and (b) water; and (c) 0.1 to 15 wt% of a polymer selected from the group consisting of: alkoxylated polyamines, polyester soil release polymers and mixtures thereof; wherein the composition has a pH of 3-6; the invention further provides the use of a surfactant combination comprising a rhamnolipid biosurfactant and a zwitterionic surfactant to increase the viscosity of a liquid cleaning composition at pH 3-6.

Description

Cleaning composition
Technical Field
The present invention relates to liquid cleaning compositions. In particular, the present invention relates to liquid cleaning compositions in the form of liquid laundry detergent compositions.
Background
Many liquid cleaning compositions, particularly laundry liquid detergent compositions desirably comprise a cleaning polymer. These cleaning polymers, particularly alkoxylated polyamines and polyester based soil release polymers, are desirably included because they provide weight effective cleaning of the formulation. However, the inclusion of these polymers presents problems because they reduce the viscosity of the composition. The rheology of many liquid cleaning compositions can be improved in the eyes of the consumer. Consumers dislike liquid cleaning compositions having too low a viscosity, and it is believed that these compositions are not sufficiently thick to provide adequate cleaning. Therefore, there is a problem of how to improve the viscosity of the liquid cleaning composition.
One way to improve the viscosity is to add another polymer, a thickening polymer, such as a so-called HASE polymer (hydrophobically modified alkali-soluble emulsion polymer). Such thickening polymers increase rheology, especially viscosity of the formulation.
US 2018/0044614 discloses in the claims and examples various formulations in the examples, including (a) surfactant combinations (rhamnolipids and other surfactants); (b) one or more viscosity modifiers; (c) EPEI; and (d) a fragrance. Viscosity modifiers are necessary for the compositions of US 2018/0044614, most preferably with a pH of greater than 7 to 13.
However, there is a need to increase the viscosity of liquid cleaning compositions, particularly laundry liquid detergent compositions, to eliminate the need for additional thickening polymers.
Disclosure of Invention
We have found that by incorporating a rhamnolipid biosurfactant with a betaine surfactant in a liquid cleaning composition and by having a pH in the range of 4-6, improved rheology in terms of higher viscosity can be achieved.
In a first aspect, the present invention provides a liquid cleaning composition comprising:
a) 5-70 wt% of a surfactant system comprising:
i) At least one anionic and/or nonionic surfactant; and
ii) a rhamnolipid biosurfactant present in an amount ranging from 1 to 95 wt%, preferably from 1 to 50 wt%, more preferably from 2.5 to 50 wt%, most preferably from 5 to 25 wt% of the total surfactant in the surfactant system; and
iii) 0.5-10 wt% of a zwitterionic surfactant; and
b) Water; and
c) 0.1-15 wt%, preferably 0.1-10 wt% of a polymer selected from the group consisting of: alkoxylated polyamines, polyester soil release polymers and mixtures thereof;
wherein the composition has a pH of 3-6.
In a second aspect, the present invention provides the use of a surfactant combination comprising a rhamnolipid biosurfactant and a zwitterionic surfactant to increase the viscosity of a liquid cleaning composition at a pH of 3-6, preferably 3.5-6, more preferably 4-6, even more preferably 4-5.75, most preferably 4.5-5.5.
Preferably in the use of the second aspect the rhamnolipid biosurfactant comprises at least 70 wt% of a rhamnolipid, preferably at least 80 wt% of a rhamnolipid, preferably having the formula Rha2C 8-12 C 8-12 Wherein the alkyl chain may be saturated or unsaturated.
Detailed Description
Unless otherwise indicated, when viscosity is measured herein, it is measured on an Anton Paar ASC rheometer at 25 ℃.
The liquid cleaning composition comprises 5 to 70 wt% of a surfactant system. Preferably, the liquid cleaning composition comprises from 5 to 60 wt%, more preferably from 5 to 50 wt%, even more preferably from 7.5 to 30 wt%, most preferably from 7.5 to 25 wt%, for example from 8 to 25 wt%, or even from 8 to 20 wt% of the surfactant system.
The surfactant system comprises at least one anionic or nonionic surfactant and a rhamnolipid biosurfactant, said rhamnolipid biosurfactant being present in an amount ranging from 1 to 95 wt.% of the total surfactant in the surfactant system.
Preferably, the rhamnolipid is present in an amount in the range of 1-50 wt% of the total surfactant in the surfactant system, more preferably in an amount in the range of 2.5-50 wt%, most preferably 5-25 wt%, for example 7.5-25 wt% of the total surfactant in the surfactant system.
The liquid cleaning composition comprises water. Water is typically the balancing agent in the formulation and may constitute all or most of the non-surfactant weight% of the composition. Typical water content may be 50-90 wt%, preferably 60-90 wt%, more preferably 65-88 wt%.
Rhamnolipid
The composition comprises a rhamnolipid biosurfactant.
The rhamnolipid has a single rhamnose sugar ring.
The rhamnolipid has two rhamnose sugar rings.
In the case of rhamnolipids, throughout this patent specification the prefixes mono-and di-are used to denote mono-rhamnolipids (with a single rhamnose ring) and di-rhamnolipids (with two rhamnose rings), respectively. If abbreviations are used, R1 is monosrhamnolipid and R2 is ditrhamnolipid.
The rhamnolipid may be L-rhamnosyl-beta-hydroxydecanoyl-beta-hydroxydecanoate (formula C) 26 H 48 O 9 Rha2C of (C) 10 C 10 )。
Typical rhamnolipids are L-rhamnosyl-beta-hydroxydecanoyl-beta-hydroxydecanoate (formula C 32 H 58 O 13 Rha2C of (C) 10 C 10 )。
In practice, depending on the carbon source and bacterial strain, a wide variety of other minor components with different combinations of alkyl chain lengths are present in combination with the more common rhamnolipids described above. The ratio of mono-rhamnolipid to di-rhamnolipid can be controlled by the production method. Some bacteria produce only monorhamnolipids, see US5767090: example 1, some enzymes can convert mono-rhamnolipids to di-rhamnolipids.
The following rhamnolipids are sources of mono-and di-rhamnolipids encompassed by the present invention (C 12:1 ，C 14:1 Indicating toolFatty acyl chain with double bond):
rhamnolipids (monosrhamnolipids) produced by pseudomonas aeruginosa:
Rha-C 8 -C 10 、Rha-C 10 -C 8 、Rha-C 10 -C 10 、Rha-C 10 -C 12 、Rha-C 10 -C 12:1 、Rha-C 12 -C 10 、Rha-C 12:1 -C 10
rhamnolipids produced by pseudomonas aeruginosa (mono rhamnolipids only):
Rha-C 10 -C 8 、Rha-C 10 -C 10 、Rha-C 12 -C 10 、Rha-C 12:1 -C 10 、Rha-C 12 -C 12 、Rha-C 12:1 -C 12 、Rha-C 14 -C 10 、Rha-C 14:1 -C 10
monomorhamnolipids produced from Pseudomonas putida by introducing the rhlA and rhlB genes of Pseudomonas aeruginosa [ Cha et al, bioresource technology 2008.99 (7): 2192-9]
Rhamnolipids (ditolyl) produced by pseudomonas aeruginosa:
Rha-Rha-C 8 -C 10 、Rha-Rha-C 8 -C 12:1 、Rha-Rha-C 10 -C 8 、Rha-Rha-C 10 -C 10 、Rha-Rha-C 10 -C 12:1 、Rha-Rha-C 10 -C 12 、Rha-Rha-C 12 -C 10 、Rha-Rha-C 12:1 -C 12 、Rha-Rha-C 10 -C 14:1
rhamnolipids produced by burkholderia melioides (ditolyl only):
Rha-Rha-C 14 -C 14 。
rhamnolipids (ditolyl only) produced by-Burkholdera (Pseudomonas) planarii:
Rha-Rha-C 14 -C 14 。
the rhamnolipids produced by pseudomonas aeruginosa, not originally identified as mono-rhamnolipids or di-rhamnolipids:
C 8 -C 8 、C 8 -C 10 、C 10 -C 8 、C 8 -C 12:1 、C 12:1 -C 8 、C 10 -C 10 、C 12 -C 10 、C 12:1 -C 10 、C 12 -C 12 、C 12:1 -C 12 、C 14 -C 10 、C 14:1 -C 10 、C 14 -C 14 。
preferably, the rhamnolipid comprises at least 50 wt% of a rhamnolipid, more preferably at least 60 wt% of a rhamnolipid, even more preferably 70 wt% of a rhamnolipid, most preferably at least 80 wt% of a rhamnolipid.
Preferably, the rhamnolipid is of formula Rha2C 8-12 C 8-12 Is a ditrhamnolipid of (a). Preferred alkyl chain length is C 8 To C 12 The alkyl chain may be saturated or unsaturated.
Surface active agent
The liquid cleaning composition comprises at least one anionic and/or nonionic surfactant. This means that the composition may comprise a single anionic surfactant, or a mixture of anionic surfactants, or a single nonionic surfactant, or a mixture of nonionic surfactants, or a mixture of one or more anionic surfactants and one or more nonionic surfactants.
Suitable nonionic and anionic surfactants may be selected from "Surface Active Agents", volume 1,Schwartz&Perry,Interscience 1949; roll 2,Schwartz,Perry&Berch,Interscience 1958; the surfactants described in the current versions of "McCutcheon's Emulsifiers and Detergents", or "Tenside Taschenbuch", H.Stache, 2 nd edition, carl Hauser Verlag,1981, or Helmut W.Stache editors Anionic Surfactants: organic Chemistry (Marcel Dekker 1996).
Suitable anionic detergent compounds which may be used are typically water-soluble alkali metal salts of organic sulfuric and sulfonic acids having alkyl groups containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher alkyl groups.
Examples of suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, in particular by reacting higher C's, e.g. produced from tallow or coconut oil 8 To C 18 Alcohol sulphates, alkyl ether carboxylic acids; alkyl C 9 To C 20 Sodium and potassium benzenesulfonates, in particular linear secondary alkyl C 10 To C 15 Sodium benzenesulfonate; and sodium alkyl glyceryl ether sulphates, particularly those ethers of higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
The anionic surfactant is preferably selected from: linear alkylbenzene sulfonates; alkyl sulfate; alkyl ether sulfate; alkyl ether carboxylates and mixtures thereof.
More preferred anionic surfactants are selected from: linear alkylbenzene sulfonates; alkyl sulfate; alkyl ether sulfates and mixtures thereof. Preferably, the alkyl ether sulfate is C having an average of 1 to 3 EO (ethoxylate) units 12 -C 14 N-alkyl ether sulfate.
Sodium Lauryl Ether Sulfate (SLES) is particularly preferred. Preferably, the linear alkylbenzene sulfonate is C 11 To C 15 Sodium alkylbenzenesulfonate. Preferably, the alkyl sulfate is a linear or branched C 12 To C 18 Sodium alkyl sulfate. Sodium dodecyl sulfate is particularly preferred (SDS, also known as primary alkyl sulfate).
Preferably, the anionic surfactant comprises linear alkylbenzene sulfonate and/or alkyl ether sulfate.
Preferably, two or more anionic surfactants are present, such as linear alkylbenzene sulfonates together with alkyl ether sulfates.
The composition may comprise anionic and/or nonionic surfactants.
Preferably, the weight fraction of nonionic surfactant to anionic surfactant is from 0 to 0.3. This means that the nonionic surfactant may be present (or it may not be present if the weight fraction is 0), but if the nonionic surfactant is present, the weight fraction of nonionic surfactant is preferably at most 30% of the total weight of anionic surfactant + nonionic surfactant.
Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having aliphatic hydrophobic groups and reactive hydrogen atoms, such as fatty alcohols, acids or amides, with, in particular, ethylene oxide, alone or together with propylene oxide. Specific nonionic detergent compounds are aliphatic C 8 To C 18 Condensation products of linear or branched primary or secondary alcohols with ethylene oxide.
If a nonionic surfactant is present, it is most preferred that the nonionic surfactant is an alcohol ethoxylate, more preferably C having an average of 3 to 10 moles of ethylene oxide 10 -C 18 Alcohol ethoxylates, most preferably C having an average of 5 to 9 moles of ethylene oxide 12 -C 15 Alcohol ethoxylates.
Preferably, the surfactant used is saturated.
Zwitterionic surfactants
The surfactant system comprises 0.5 to 10 wt% of a zwitterionic surfactant. Preferably, the composition comprises from 0.5 to 10 wt%, preferably from 0.75 to 5 wt%, most preferably from 1 to 4 wt% of a zwitterionic surfactant, said surfactants being part of the surfactant system.
The zwitterionic surfactant is preferably a betaine surfactant. Preferably, the composition comprises 0.5 to 10 wt%, preferably 0.75 to 5 wt%, most preferably 1 to 4 wt% betaine surfactant, calculated as part of the surfactant system.
The preferred betaine surfactant is cocamidopropyl betaine.
Preferred liquid cleaning compositions are liquid laundry detergent compositions.
Preferred laundry detergent compositions comprise:
a) 5-50 wt% of a surfactant system comprising:
i) At least one anionic and/or nonionic surfactant; and
ii) a rhamnolipid biosurfactant present in an amount ranging from 1 to 95 wt%, preferably from 1 to 50 wt%, more preferably from 2.5 to 50 wt%, most preferably from 5 to 25 wt% of the total surfactant in the surfactant system; and
iii) 0.5-10 wt% betaine surfactant;
b) Water;
c) 0.1-15 wt%, preferably 0.1-10 wt% of a polymer selected from the group consisting of: alkoxylated polyamines, polyester soil release polymers and mixtures thereof;
d) 0.1-2 wt% of perfume
Wherein the composition has a pH of 3 to 6, preferably 4 to 5.5;
wherein the rhamnolipid biosurfactant comprises at least 70 wt% of a rhamnolipid, preferably at least 80 wt% of a rhamnolipid, preferably having the formula Rha2C 8-12 C 8-12 Wherein the alkyl chain may be saturated or unsaturated.
pH
The liquid cleaning composition has a pH of from 3 to 6, preferably from 3.5 to 6, more preferably from 4 to 6, even more preferably from 4 to 5.75, most preferably from 4.5 to 5.5.
Polymer
The composition comprises from 0.1 to 15 wt%, preferably from 0.1 to 10 wt%, of a polymer selected from the group consisting of alkoxylated polyamines, polyester soil release polymers and mixtures thereof.
Polyester soil release polymers
The composition may comprise from 0.05 to 6 wt%, preferably from 0.1 to 5 wt% of one or more polyester soil release polymers. Suitable polyester-based soil release polymers are described in WO 2014/029479 and WO 2016/005338.
Preferably, the polyester-based soil release polymer is a polyester according to formula (I)
Wherein the method comprises the steps of
R 1 And R is 2 Independently of one another X- (OC) 2 H 4 ) n -(OC 3 H 6 ) m Wherein X is C 1-4 Alkyl, preferably methyl, and- (OC) 2 H 4 ) Radicals and- (OC) 3 H 6 ) The groups being arranged in blocks and consisting of- (OC) 3 H 6 ) The blocks consisting of groups being bound to COO groups or HO- (C) 3 H 6 ) And are preferably X- (OC) independently of one another 2 H 4 ) n -(OC 3 H 6 ) m ，
n is an average number of moles, based on 12 to 120, preferably 40 to 50,
m is based on a molar average of 1 to 10, preferably 1 to 7, and
a is based on a molar average of 4-9.
Preferably, the polyester provided as the reactive mixture comprises:
a) 45-55% by weight of a reactive mixture of one or more polyesters according to the formula (I)
Wherein the method comprises the steps of
R 1 And R is 2 Independently of one another X- (OC) 2 H 4 ) n -(OC 3 H 6 ) m Wherein X is C 1-4 Alkyl, preferably methyl, and- (OC) 2 H 4 ) Radicals and- (OC) 3 H 6 ) The groups being arranged in blocks and consisting of- (OC) 3 H 6 ) The blocks consisting of groups being bound to COO groups or HO- (C) 3 H 6 ) And are preferably X- (OC) independently of one another 2 H 4 ) n -(OC 3 H 6 ) m ，
n is an average number of moles, based on 12 to 120, preferably 40 to 50,
m is based on a molar average of 1 to 10, preferably 1 to 7, and
a is based on a molar average of 4-9.
B) 10-30 wt% of an active mixture of one or more alcohols selected from the group consisting of ethylene glycol, 1, 2-propylene glycol, 1, 3-propylene glycol, 1, 2-butanediol, 1, 3-butanediol, 1, 4-butanediol, and butyl glycol, and
c) 24-42% by weight of water.
Reactive mixture refers to components that are preformed and added to the remainder of the liquid cleaning composition or ultimately form the liquid cleaning composition.
Alkoxylated polyamines
The composition may and preferably does comprise an alkoxylated polyamine. The polymer suitably comprises an alkoxylated polyamine in an amount of from 0.25 to 8% by weight, preferably from 0.5 to 6% by weight. Another preferred content is 1-4% by weight.
Preferred alkoxylated polyamines include alkoxylated polyethylenimines and/or alkoxylated polypropylenimines. The polyamine may be linear or branched. It can be branched to the extent that it is a dendrimer. The alkoxylation may generally be ethoxylation or propoxylation, or a mixture of both. When the nitrogen atom is alkoxylated, the preferred average degree of alkoxylation is from 10 to 30, preferably from 15 to 25.
One preferred material is an ethoxylated polyethyleneimine having an average degree of ethoxylation of from 10 to 30, preferably from 15 to 25, wherein the nitrogen atoms are ethoxylated.
Salt
Preferably, the composition comprises sodium chloride or magnesium sulfate salts.
Spice
The composition preferably comprises a perfume. The perfume is preferably present in the range of 0.001 to 3 wt%, more preferably 0.05 to 0.5 wt%, even more preferably 0.1 to 2 wt%, most preferably 0.1 to 1 wt%.
Many suitable examples of fragrances are provided in 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.
The fragrance may be provided as a free oil or may be provided in encapsulated form.
Other ingredients
Preferably, the composition comprises an ionic salt. The salt preferably comprises any organic or inorganic cation including, but not limited to, cations of alkali metals Cs, na, K, ca, mg and the like, anions including halide anions, more preferably Cl. Other preferred salts include organic cations, such as amides + NH-R) or an ammonium cation or a substituted form thereof, such as triethylammonium. The anions of the organic cations may comprise any alkyl, aryl, aralkyl moiety that may be short, medium, long, branched, cyclic, or linear.
Preferably, the composition comprises 0.01 to 5% by weight of salt. In the case of NaCl, the content is preferably in the range of 0.5 to 2% by weight.
Depending on the end use of the liquid cleaning composition, it may further comprise any of the following as single ingredients or mixtures thereof: polymers, chelating agents(s), hydrotropes (e.g., glycerol or monopropylene glycol), opacifiers, preservatives, colorants (e.g., dyes and pigments), enzymes (e.g., proteases, alpha-amylases, cellulases, lipases, peroxidases/oxidases, pectate lyase and mannanases or mixtures thereof), additional surfactants such as cationic surfactants, fatty acids, softeners, polymers to resist redeposition of soil, bleaching agents, bleach activators and bleach catalysts, antioxidants, pH-adjusting agents (e.g., citric acid and NaOH), pH control agents and buffers. Such other ingredients may suitably be used with preferred liquid cleaning compositions, i.e. laundry liquid detergent compositions.
Fluorescent agent
The composition preferably comprises a fluorescent agent (optical brightener). 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, e.g., sodium salts.
Preferred classes of fluorescers are: distyrylbiphenyl compounds such as Tinopal (trade mark) CBS-X; diamine stilbenedisulfonic acid compounds such as Tinopal DMS pure Xtra and blancophor (trade mark) HRH; and pyrazoline compounds such as blancophor SN.
Preferred fluorescers are: sodium 2 (4-styryl-3-sulfophenyl) -2H-naphthol [1,2-d ] triazoles, 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-disulfonate, and disodium 4,4' -bis (2-sulfostyryl) biphenyl.
The total amount of one or more fluorescent agents used in the composition is preferably 0.0001 to 0.5 wt%, more preferably 0.005 to 2 wt%, most preferably 0.05 to 0.25 wt%.
The aqueous solution used in the process preferably has a fluorescent agent. The fluorescent agent is preferably present in the aqueous solution used in the process in a range of 0.0001g/L to 0.1g/L, more preferably 0.001g/L to 0.02 g/L.
Enzymes
When practicing the methods of the invention, one or more enzymes are preferably present in the laundry compositions of the invention.
Each enzyme, if present, is present in the laundry compositions of the present invention in an amount of from 0.0001 wt% to 0.1 wt%.
The amount of enzyme present in the composition is preferably related to the amount of enzyme as pure protein.
Contemplated enzymes include proteases, alpha-amylases, cellulases, lipases, peroxidases/oxidases, pectate lyases and mannanases or mixtures thereof.
Preferably, the enzyme is selected from: protease, alpha-amylase; cellulases and lipases.
Suitable lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include those from the following: humicola (synonymous thermophilic fungi (Thermomyces)), for example from H.lanuginosa (T.lanuginosus) as described in EP 258 068 and EP 305 216 or from H.insolens as described in WO 96/13580; pseudomonas lipases, for example from Pseudomonas alcaligenes or Pseudomonas pseudoalcaligenes (EP 218 272), pseudomonas cepacia (P.cepacia) (EP 331 376), pseudomonas stutzeri (GB 1,372,034), pseudomonas fluorescens (P.fluoscens), pseudomonas strain SD 705 (WO 95/06720 and WO 96/27002), P.wisconsiensis (WO 96/12012); bacillus lipases are, for example, from Bacillus subtilis (B.subilis) (Dartois et al (1993), biochemica et Biophysica Acta,1131, 253-360), bacillus stearothermophilus (B.stearothermophilus) (JP 64/744992) or Bacillus pumilus (B.pumilus) (WO 91/16422).
Other examples are lipase variants, such as those described in WO 92/05249, WO 94/01541, EP 407 225, EP 260 105, WO 95/35381, WO 96/00292, WO 95/30744, WO 94/25578, WO 95/14783, WO 95/22615, WO 97/04079 and WO 97/07202, WO 00/60063.
Preferred commercially available lipases include Lipolase TM And Lipolase Ultra TM 、Lipex TM And lipoclear TM (Novozymes A/S)。
The process of the invention may 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 towards phospholipids.
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 phosphated in the third position; the phosphoric acid in turn may be esterified to an amino alcohol. Phospholipase is an enzyme involved in phospholipid hydrolysis. Can distinguish between multiple types of phospholipase activity, including phospholipase A 1 And A 2 Which hydrolyzes one fatty acyl group (in the sn-1 and sn-2 positions, respectively) to form lysophospholipids; and lysophospholipase (or phospholipase B), which can hydrolyze fatty acyl groups remaining in lysophospholipid. Phospholipase C and phospholipase D (phosphodiesterases) release diacylglycerol or phosphatidic acid, respectively.
Proteases hydrolyze peptides and bonds within proteins, which in a laundry environment results in enhanced removal of protein or peptide containing stains. Examples of suitable protease families include aspartic proteases, cysteine proteases, glutamic acid proteases, asparagine (aspargine) peptide-cleaving enzymes, serine proteases and threonine proteases. Such protease families are described in the MEROPS peptidase database (http:// MEROPS. Sanger. Ac. Uk /). Serine proteases are preferred. Subtilisin-type serine proteases are more preferred. According to Siezen et al, protein Engng.4 (1991) 719-737 and Siezen et al, protein Science 6 (1997) 501-523, the term "subtilase" refers to a subset of serine proteases. Serine proteases are a subset of proteases characterized by having serine at the active site that forms a covalent adduct with a substrate. Subtilases can be divided into 6 sub-categories, namely the Subtilisin (Subtilisin) family, the thermophilic proteinase (thermotase) family, the proteinase K family, the lanthionine antibiotic (Lantibiotic) peptidase family, the Kexin family and the Pyrolysin family.
Examples of subtilases are those derived from bacillus such as those described in US7262042 and WO09/021867, alkalophilus, bacillus subtilis, bacillus amyloliquefaciens, bacillus pumilus and bacillus jie, and subtilisin (subtilisin lentus) described in WO89/06279, subtilisin Novo, subtilisin Carlsberg, bacillus licheniformis, subtilisin BPN', subtilisin 309, subtilisin 147 and subtilisin 168, and proteinase PD138 described in WO 93/18140. Other useful proteases may be those described in WO92/175177, WO01/016285, WO02/026024 and WO 02/016547. Examples of trypsin-like proteases are trypsin (e.g.of porcine or bovine origin) and Fusarium protease described in WO89/06270, WO94/25583 and WO05/040372, and chymotrypsin from Cellulomonas (Cellumomonas) described in WO05/052161 and WO 05/052146.
Most preferably, the protease is subtilisin (EC 3.4.21.62).
Examples of subtilases are those derived from bacillus such as those described in US7262042 and WO09/021867, alkalophilus, bacillus subtilis, bacillus amyloliquefaciens, bacillus pumilus and bacillus jii, and subtilisin, subtilisin Novo, subtilisin Carlsberg, bacillus licheniformis, subtilisin BPN', subtilisin 309, subtilisin 147 and subtilisin 168, and proteinase PD138 described in WO 93/18140. Preferably, the subtilisin is derived from bacillus, preferably bacillus lentus, bacillus alkalophilus, bacillus subtilis, bacillus amyloliquefaciens, bacillus pumilus and bacillus gibsonii, as described in US 6,312,936 B1,US 5,679,630,US 4,760,025,US7,262,042 and WO 09/021867. Most preferably, the subtilisin is derived from bacillus gibsonii or bacillus lentus.
Suitable commercially available proteases include those under the trade nameDuralase TM ，Durazym TM ，/>Ultra，/>Ultra，Ultra，Ultra，/> And->Those sold, all of which can be regarded as +.>Or->(Novozymes A/S) sales.
The invention may use cutinases classified as EC 3.1.1.74. The cutinase used according to the invention may be of any origin. Preferably, the cutinase has a microbial origin, in particular a bacterial, fungal or yeast origin.
Suitable amylases (α and/or β) include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Amylases include, for example, the alpha-amylase obtained from a particular strain of Bacillus licheniformis as described in more detail in GB 1,296,839, or a strain of Bacillus as disclosed in WO 95/026397 or WO 00/060060. A commercially available amylase is Duramyl TM 、Termamyl TM 、Termamyl Ultra TM 、Natalase TM 、Stainzyme TM 、Fungamyl TM And BAN TM (Novozymes A/S)、Rapidase TM And Purastar TM (from Genencor International inc.).
Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Suitable cellulases include cellulases from the following: bacillus, pseudomonas, humicola, fusarium, thielavia, acremonium, fungal cellulases produced, for example, from specific Humicola, thielavia, myceliophthora thermophila and Fusarium oxysporum disclosed in U.S. Pat. No. 4,435,307, U.S. Pat. No. 5,648,263, U.S. Pat. No. 5,691,178, U.S. Pat. No. 5,776,757, WO 89/09259, WO 96/029397 and WO 98/0123307. Commercially available cellulases include Celluzyme TM 、Carezyme TM 、Celluclean TM 、Endolase TM 、Renozyme TM (Novozymes A/S)、Clazinase TM And Puradax HA TM (Genencor International Inc.) and KAC-500 (B) TM (Kao Corporation)。Celluzyme TM Is preferred.
Suitable peroxidases/oxidases include those of plant, bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful peroxidases include peroxidases from the genus Coprinus, e.g.from Coprinus cinereus, and variants thereof, such as those described in WO 93/24618, WO 95/10602 and WO 98/15257. Commercially available peroxidases include Guardzyme TM And Novozym TM 51004(Novozymes A/S)。
Additional suitable enzymes are discussed in WO2009/087524, WO2009/090576, WO2009/107091, WO2009/111258 and WO 2009/148983.
The aqueous solution used in the method preferably has enzymes present. The enzyme is preferably present in the aqueous solution used in the process in a concentration in the range of 0.01-10ppm, preferably 0.05-1 ppm.
Suitable enzymes may be included as a mixture or as two or more enzymes.
Enzyme stabilizer
Any enzyme present in the composition may be stabilised using conventional stabilisers, for example polyols such as propylene glycol or glycerol; sugar or sugar alcohol; lactic acid; boric acid or boric acid derivatives, for example aromatic borates, or phenylboronic acid derivatives, such as 4-formylphenylboronic acid, and the compositions may be formulated as described, for example, in WO 92/19709 and WO 92/19708.
Chelating agent
Preferably, the composition comprises from 0.1 to 5 wt%, preferably from 0.25 wt% to 4 wt%, more preferably from 0.5 to 2.5 wt% of the chelating agent.
Preferred chelating agents include phosphonic acids or salts thereof.
The phosphonic acid (or salt thereof) chelating agent is preferably selected from: 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP); diethylenetriamine penta (methylenephosphonic acid) (DTPMP); hexamethylenediamine tetra (methylenephosphonic acid) (HDTMP); aminotri (methylenephosphonic Acid) (ATMP); ethylenediamine tetra (methylenephosphonic acid) (EDTMP); tetramethylenediamine tetra (methylenephosphonic acid) (TDTMP); and phosphonobutane-tricarboxylic acid (PBTC).
The chelating agent is preferably in the acid form. Meaning that it is a phosphonic acid.
A preferred phosphonic acid chelating agent is 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP).
Polymer
The composition may preferably comprise one or more polymers. Examples of polymers are carboxymethyl cellulose, poly (ethylene glycol), poly (vinyl alcohol), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid copolymers.
Polymers that prevent dye deposition may be present, such as poly (vinylpyrrolidone), poly (vinylpyridine-N-oxide), and poly (vinylimidazole).
Shading dye
Dyes are described in Color Chemistry Synthesis, properties and Applications of Organic Dyes and Pigments (H Zollinger, wiley VCH, zulrich, 2003) and Industrial Dyes Chemistry, properties Applications (K Hunger (ed), wiley-VCH Weinheim 2003).
Hueing dyes for laundry compositions preferably have a maximum absorption in the visible range (400-700 nm) of greater than 5000L mol -1 cm -1 Preferably greater than 10000L mol -1 cm -1 Is a refractive index of the optical fiber. The dye is blue or violet in color.
Preferably, the composition comprises a hueing dye. Preferably, the hueing dye is present at 0.0001 to 0.1% by weight of the composition.
Preferred hueing dye chromophores are azo, azine, anthraquinone and triphenylmethane.
Azo, anthraquinone, phthalocyanine and triphenylmethane dyes are preferably either net anionic or uncharged. Azine preferably has a net anionic or cationic charge. During the wash or rinse step of the wash process, blue or violet hues are deposited onto the fabric, thereby providing a visible hue to the fabric. In this regard, the dye imparts a blue or violet color to the white cloth with a hue angle of 240-345, more preferably 250-320, most preferably 250-280. The white cloth used in this test was bleached, non-mercerized woven cotton sheet.
Hueing dyes are discussed in WO2005/003274, WO2006/032327 (Unilever), WO2006/032397 (Unilever), WO2006/045275 (Unilever), WO06/027086 (Unilever), WO2008/017570 (Unilever), WO2008/141880 (Unilever), WO2009/132870 (Unilever), WO2009/141173 (Unilever), WO2010/099997 (Unilever), WO2010/102861 (Unilever), WO2010/148624 (Unilever), WO2008/087497 (P & G), WO2011/011799 (P & G), WO2012/054820 (P & G), WO2013/142495 (P & G) and WO2013/151970 (P & G).
The monoazo dye preferably contains a heterocyclic ring, and most preferably is a thiophene dye. The monoazo dye is preferably alkoxylated and is preferably uncharged or anionically charged at ph=7. Alkoxylated thiophene dyes are discussed in WO/2013/142495 and WO/2008/087497. Preferred examples of thiophene dyes are shown below:
the disazo dye is preferably a sulphonated disazo dye. Preferred examples of sulphonated bisazo compounds are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, direct violet 66, direct violet 99 and alkoxylated forms thereof. Alkoxylated bisazo dyes are discussed in WO2012/054058 and WO 2010/151906.
Examples of alkoxylated bisazo dyes are:
thiophene dyes are available from Milliken under the trade names Liquitint Violet DD and Liquitint Violet ION.
The azine dye is preferably selected from sulphonated phenazine dyes and cationic phenazine dyes. Preferred examples are acid blue 98, acid violet 50, dyes with cas numbers 72749-80-5, acid blue 59, and phenazine dyes selected from the group consisting of:
wherein:
X 3 selected from: -H, -F, -CH 3 ，-C 2 H 5 ，-OCH 3 and-OC 2 H 5 ；
X 4 Selected from: -H, -CH 3 ，-C 2 H 5 ，-OCH 3 and-OC 2 H 5 ；
Y 2 Selected from: -OH, -OCH 2 CH 2 OH，-CH(OH)CH 2 OH，-OC(O)CH 3 And C (O) OCH 3 。
Hueing dye is present in the composition in the range of 0.0001 to 0.5 wt%, preferably 0.001 to 0.1 wt%. Depending on the nature of the hueing dye, there is a preferred range depending on the effectiveness of the hueing dye, which depends on the class and the specific effectiveness within any particular class. As described above, the hueing dye is a blue or violet hueing dye.
Mixtures of hueing dyes may be used.
The hueing dye is most preferably a reactive blue anthraquinone dye covalently linked to an alkoxylated polyethylenimine. The alkoxylation is preferably selected from the group consisting of ethoxylation and propoxylation, most preferably propoxylation. Preferably, 80 to 95 mole% of the N-H groups in the polyethyleneimine are replaced by isopropanol groups by propoxylation. Preferably, the molecular weight of the polyethyleneimine is 600-1800 prior to reaction with the dye and propoxylation.
An example structure of a preferred reactive anthraquinone covalently linked to a propoxylated polyethylenimine is:
(Structure I).
Spice
The composition may comprise 0.001 to 3 wt% perfume, preferably 0.1 to 2 wt% perfume. The perfume may suitably be present as a free perfume oil or encapsulated perfume.
Miscellaneous items
When the alkyl group is sufficiently long to form a branched or cyclic chain, the alkyl group includes branched, cyclic, and straight alkyl chains. The alkyl group is preferably linear or branched, most preferably linear.
The indefinite article "a" or "an" as used herein, unless otherwise indicated, means at least one, one or more.
Experiment
The following examples are intended to illustrate the invention in detail, but do not limit the invention thereto. The alphabetic embodiments are comparative and the numeric embodiments are in accordance with the present invention.
Example 1
This example shows the adverse effects of adding an alkoxylated polyamine and a polyester-based soil release polymer to a liquid cleaning composition (laundry detergent), and the need to include a HASE polymer to overcome the adverse effects on viscosity.
Table 1: laundry detergent formulations
Formulation a did not have polyester soil release polymer (Texcare UL 50) nor alkoxylated polyamine (HP 20); one of each of the preparation B and the preparation C; formulation D contained two polymers. Viscosity was measured using an Anton Paar ASC rheometer, set using Bob and reported that HASE thickening polymers based on 0.55-0.85 contained a content (Acusol WR) at 23s -1 Viscosity measured at shear rate of (c).
Table 2:
this data shows the viscosity impairment of the inclusion of the polyester soil release polymer (Texcare UL 50) and the alkoxylated polyamine (HP 20). This suggests that HASE polymers are used to increase viscosity.
Example 2
This example shows improved viscosity build using rhamnolipids at low pH.
Table 3: laundry detergent formulations
/>
Formulation E did not have polyester soil release polymer (Texcare UL 50), nor alkoxylated polyamine (HP 20), nor rhamnolipid; formulation 1 has both polymer and rhamnolipid (containing R2 rhamnolipid in an amount of 10% of the total surfactant). Viscosity was measured using an Anton Paar ASC rheometer, set using Bob and reported at pH-3 to-6 at different pH by addition of citric acid for 23s -1 Viscosity measured at shear rate of (c).
TABLE 4 preparation E (control) -at 23s -1 Viscosity of E expressed in Cps at shear rate of (C)
TABLE 5 preparation 1 (invention) -at 23s -1 Viscosity of 1 expressed in Cps at shear rate of (c)
The data show that at low pH (pH 3-6) an improvement in viscosity (higher viscosity) is seen by adding rhamnolipid biosurfactant to the surfactant system.

Claims (32)

1. A liquid cleaning composition comprising:
a) 7.5-30 wt% of a surfactant system comprising:
i) At least one anionic and/or nonionic surfactant; and
ii) a rhamnolipid biosurfactant present in an amount ranging from 5 to 25 wt% of the total surfactant in the surfactant system; and
iii) 0.5-10 wt% of a zwitterionic surfactant; and
b) Water; and
c) 0.1-15 wt% of a polymer selected from the group consisting of: alkoxylated polyamines, polyester soil release polymers and mixtures thereof;
wherein the composition has a pH of 4 to 5.5.
2. The liquid cleaning composition according to claim 1, wherein the composition comprises from 0.75 to 5 wt% of the zwitterionic surfactant, calculated as part of the surfactant system.
3. The liquid cleaning composition of claim 2, wherein the composition comprises 1-4 wt% of the zwitterionic surfactant.
4. The liquid cleaning composition of claim 2, wherein the zwitterionic surfactant is betaine.
5. The liquid cleaning composition of claim 2, wherein the zwitterionic surfactant is cocamidopropyl betaine.
6. The liquid cleaning composition of any one of claims 1-5, comprising an anionic surfactant, wherein the anionic surfactant is selected from the group consisting of: linear alkylbenzene sulfonates; alkyl sulfate; alkyl ether sulfate; alkyl ether carboxylates and mixtures thereof.
7. The liquid cleaning composition of any of claims 1-5, wherein the anionic surfactant comprises linear alkylbenzene sulfonate and/or alkyl ether sulfate.
8. The liquid cleaning composition of any one of claims 1-5, comprising a nonionic surfactant, wherein the nonionic surfactant is an alcohol ethoxylate.
9. The liquid cleaning composition of claim 8, wherein the nonionic surfactant is C having an average of 3-10 moles of ethylene oxide 10 -C 18 Alcohol ethoxylates.
10. The liquid cleaning composition of claim 8, wherein the nonionic surfactant is C having an average of 5-9 moles of ethylene oxide 12 -C 15 Alcohol ethoxylates.
11. The liquid cleaning composition of any one of claims 1-5, wherein the liquid cleaning composition comprises 7.5-25 wt.% of a surfactant system.
12. The liquid cleaning composition of any one of claims 1-5, wherein the liquid cleaning composition comprises 8-25 wt% surfactant system.
13. The liquid cleaning composition of any one of claims 1-5, wherein the liquid cleaning composition comprises 8-20 wt% surfactant system.
14. The liquid cleaning composition of any one of claims 1-5, wherein the composition has a pH of 4.5-5.5.
15. The liquid cleaning composition of any one of claims 1-5, wherein the rhamnolipid comprises at least 50 wt% of a di-rhamnolipid.
16. The liquid cleaning composition of claim 15, wherein the rhamnolipid comprises at least 60 wt% of a di-rhamnolipid.
17. The liquid cleaning composition of claim 15, wherein the rhamnolipid comprises at least 70 wt% of a di-rhamnolipid.
18. The liquid cleaning composition of claim 15, wherein the rhamnolipid comprises at least 80 wt% of a di-rhamnolipid.
19. The liquid cleaning composition of claim 15, wherein the rhamnolipid comprises formula Rha2C 8-12 C 8-12 Wherein the alkyl chain is saturated or unsaturated.
20. The liquid cleaning composition of any one of claims 1-5, wherein the composition comprises a sodium chloride or magnesium sulfate salt.
21. The liquid cleaning composition of any one of claims 1-5, comprising:
a) 7.5-30 wt% of a surfactant system comprising:
i) At least one anionic and/or nonionic surfactant; and
ii) a rhamnolipid biosurfactant present in an amount ranging from 5 to 25 wt% of the total surfactant in the surfactant system; and
iii) 0.5-10 wt% betaine surfactant;
b) Water;
c) 0.1-15 wt% of a polymer selected from the group consisting of: alkoxylated polyamines, polyester soil release polymers and mixtures thereof;
d) 0.1-2 wt% of a fragrance;
wherein the composition has a pH of 4 to 5.5;
wherein the rhamnolipid biosurfactant comprises at least 70 wt% of a rhamnolipid.
22. The liquid cleaning composition of claim 21, wherein the composition comprises 0.1-10 wt% of the polymer.
23. The liquid cleaning composition of claim 21, wherein the rhamnolipid biosurfactant comprises at least 80 wt% of a di-rhamnolipid.
24. The liquid cleansing composition of claim 21, wherein the rhamnolipid is of formula Rha2C 8- 12 C 8-12 Wherein the alkyl chain is saturated or unsaturated.
25. The liquid cleaning composition of any of claims 1-5, wherein the polyester soil release polymer is a polyester according to formula (I) below
Wherein the method comprises the steps of
R 1 And R is 2 Independently of one another X- (OC) 2 H 4 ) n -(OC 3 H 6 ) m Wherein X is C 1-4 Alkyl group, and- (OC) 2 H 4 ) Radicals and- (OC) 3 H 6 ) The groups being arranged in blocks and consisting of- (OC) 3 H 6 ) The blocks consisting of groups being bound to COO groups or HO- (C) 3 H 6 )，
n is based on a molar average of 12-120,
m is based on a molar average of 1 to 10, and
a is based on a molar average of 4-9.
26. The liquid cleaning composition of claim 25, wherein X is methyl.
27. The liquid cleaning composition of claim 25, wherein n is based on a mole average of 40-50.
28. The liquid cleaning composition of claim 25, wherein m is based on a mole average of 1-7.
29. The liquid cleaning composition of any of claims 1-5, wherein the alkoxylated polyamine comprises an alkoxylated polyethylenimine and/or an alkoxylated polypropylenimine.
30. The liquid cleaning composition of claim 29, wherein alkoxylation is ethoxylation or propoxylation, or a mixture of both.
31. The liquid cleaning composition of any one of claims 1-5, wherein the liquid cleaning composition is a liquid laundry detergent composition.
32. Use of a surfactant combination comprising a rhamnolipid biosurfactant and a zwitterionic surfactant to increase the viscosity of a liquid cleaning composition at pH 4-5.5 wherein the liquid cleaning composition comprises:
a) 7.5-30 wt% of a surfactant system comprising:
i) At least one anionic and/or nonionic surfactant; and
ii) the rhamnolipid biosurfactant present in an amount ranging from 5 to 25 wt% of the total surfactant in the surfactant system; and
iii) 0.5-10 wt% of the zwitterionic surfactant; and
b) Water; and
c) 0.1-15 wt% of a polymer selected from the group consisting of: alkoxylated polyamines, polyester soil release polymers and mixtures thereof.
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