EP3122854B1 - Compositions de nettoyage contenant des polymères cationiques dans un système tensioactif enrichi en aes - Google Patents

Compositions de nettoyage contenant des polymères cationiques dans un système tensioactif enrichi en aes Download PDF

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Publication number
EP3122854B1
EP3122854B1 EP15767696.6A EP15767696A EP3122854B1 EP 3122854 B1 EP3122854 B1 EP 3122854B1 EP 15767696 A EP15767696 A EP 15767696A EP 3122854 B1 EP3122854 B1 EP 3122854B1
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mol
structural unit
laundry detergent
cationic polymer
surfactant system
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German (de)
English (en)
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EP3122854A1 (fr
Inventor
Qi Zhang
Meng Chen
Yang Zhang
Peng Qin
Ming Tang
Gang SI
Aaron FLORES-FIGUEROA
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Procter and Gamble Co
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Procter and Gamble Co
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Priority claimed from PCT/CN2014/074127 external-priority patent/WO2015143645A1/fr
Priority claimed from PCT/CN2014/074122 external-priority patent/WO2015143644A1/fr
Priority claimed from PCT/CN2014/090775 external-priority patent/WO2016074142A1/fr
Priority claimed from PCT/CN2015/072994 external-priority patent/WO2016127387A1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0094—High foaming compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0026—Low foaming or foam regulating compositions
    • 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
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
    • 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
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
    • C11D3/3776—Heterocyclic compounds, e.g. lactam

Definitions

  • the present invention relates to cleaning compositions, and in particular it relates to a liquid laundry detergent composition, that comprising a cationic polymer in a specific surfactant system for optimizing sudsing profile.
  • the present invention also relates to methods of making and using such cleaning compositions.
  • Sudsing profile is important for a cleaning composition, particularly laundry detergent, where the appropriate volume and speed of suds formation, retention and dissolution in the wash and rinse cycles are considered key benchmarks of performance by consumers.
  • laundry detergents While a sudsing profile is important for machine washing process, it is even more important in a typical hand-washing process as the consumer would see changes in the suds level in the wash and rinse cycles.
  • consumers particularly hand-washing consumers, desire laundry detergent that dissolves in the wash liquor to give voluminous suds during the wash cycle to signify sufficient performance. The suds are then carried over to the rinse solution and require additional time, water and labor to thoroughly rinse from the laundered fabric.
  • a cleaning composition preferably a laundry detergent composition
  • a laundry detergent composition which enables strong suds formation (e.g., fast generation of large volume of suds and/or stability or sustainability of the suds already generated over time) during the wash cycle while reducing and eliminating the suds quickly during the rinse cycle(s), preferably across a range of consumer wash habits and fabric/material surfaces being washed. It may be advantageous to have a laundry detergent composition that only requires a single rinse cycle to effectively remove the suds, thereby enabling the "single rinse" concept.
  • conventional de-foaming or anti-foaming agents especially the polymeric de-foaming or anti-foaming agents, are known to cause significant whiteness loss in fabrics after repeated wash cycles, i.e., the grey or dull color in fabrics that have been exposed to many wash cycles. Therefore, the usage of such polymeric de-foaming or anti-foaming agents has been limited in laundry detergent compositions.
  • the present invention relates to a laundry detergent composition which exhibits significant suds reduction during the rinse cycle while minimizing reduction of suds volume during the wash cycle, and at the same time leading to less fabric whiteness loss after repeated washing. It has now been discovered that the challenges presented hereinabove for conventional laundry detergents can be met by employing a specific cationic polymer in a unique surfactant system.
  • the cationic polymer contains a first, nonionic monomeric unit derived from (meth)acrylamide (AAm), a second, cationic monomeric unit, and optionally a third, nonionic monomeric unit (which is not AAm) at a specific monomeric ratio and having a Molecular Weight within a specific range.
  • Laundry detergent compositions containing the cationic polymer of the present invention demonstrate outstanding sudsing profile with no or little fabric whiteness loss. Absence of any silicone-derived structural component in such cationic polymer may help to optimize wash suds generation and stability while reducing/minimizing the cost of synthesis. Further, a surfactant system enriched with an alkylalkoxy sulfate (AES) surfactant is employed by the present invention to further improve the sudsing benefit of the cationic polymer.
  • AES alkylalkoxy sulfate
  • the present invention relates to a liquid laundry detergent composition, containing:
  • the cationic polymer may contain one or more additional structural units other than (i), (ii), and (iii).
  • the total mol% of all structural units contained by the cationic polymer adds up to be 100%.
  • the total mol% of (i), (ii) and (iii) adds up to 100 mol%, i.e., the cationic polymer contains no other structural units than (i), (ii), and (iii).
  • the second, cationic structural unit of the cationic polymer is derived or made from DADMAS, and more preferably derived or made from diallyl dimethyl ammonium chloride (DADMAC).
  • DADMAS diallyl dimethyl ammonium chloride
  • the third, nonionic structural unit may be made from a monomer which is vinylpyrrolidone (VP).
  • VP vinylpyrrolidone
  • the Molecular Weight of the cationic polymer ranges from 10,000 to 1,000,000 Daltons, more preferably from 15,000 to 700,000 Daltons, and most preferably from 20,000 to 350,000 Daltons.
  • the present invention relates to a liquid laundry detergent composition that comprises:
  • the present invention relates to a liquid laundry detergent composition, containing:
  • sucher indicates a non-equilibrium dispersion of gas bubbles in a relatively smaller volume of a liquid.
  • suds indicates a non-equilibrium dispersion of gas bubbles in a relatively smaller volume of a liquid.
  • suds can be used interchangeably within the meaning of the present invention.
  • sudsing profile refers to the properties of a detergent composition relating to suds character during the wash and rinse cycles.
  • the sudsing profile of a detergent composition includes, but is not limited to, the speed of suds generation upon dissolution in the laundering liquor, the volume and retention of suds in the wash cycle, and the volume and disappearance of suds in the rinse cycle.
  • the sudsing profile includes the Wash Suds Index and Rinse Suds Index, as specifically defined by the testing methods disclosed hereinafter in the examples. It may further include additional suds-related parameters, such as suds stability measured during the washing cycle and the like.
  • the term "cleaning composition” means a liquid or solid composition for treating fabrics, hard surfaces and any other surfaces in the area of fabric and home care, and includes hard surface cleaning and/or treatment including floor and bathroom cleaners (e.g., toilet bowl cleaners); hand dishwashing agents or light duty dishwashing agents, especially those of the high-foaming type; machine dishwashing agents; personal care compositions; pet care compositions; automotive care compositions; and household care compositions.
  • the cleaning composition of the present invention is a hard surface cleaning composition, preferably wherein the hard surface cleaning composition impregnates a nonwoven substrate.
  • laundry detergent composition is a subset of "cleaning composition”, and includes a liquid or solid composition, and includes, unless otherwise indicated, granular or powder-form all-purpose or “heavy-duty” washing agents for fabric, especially cleaning detergents as well as cleaning auxiliaries such as bleach, rinse aids, additives or pre-treat types.
  • the laundry detergent composition is a solid laundry detergent composition, and preferably a free-flowing particulate laundry detergent composition (i.e., a granular detergent product).
  • charge density refers to the net charge density of the polymer itself and may be different from the monomer feedstock.
  • Charge density for a homopolymer may be calculated by dividing the number of net charges per repeating (structural) unit by the molecular weight of the repeating unit.
  • the positive charges may be located on the backbone of the polymers and/or the side chains of polymers.
  • the charge density depends on the pH of the carrier.
  • charge density is calculated based on the charge of the monomer at pH of 7. Typically, the charge is determined with respect to the polymerized structural unit, not necessarily the parent monomer.
  • CCD Cationic Charge Density
  • E2 is the molar equivalents of charge of the cationic structural unit
  • C2 is the molar percentage of the cationic structural unit
  • C1 and C3 are the molar percentages of the first and second (if any) nonionic structural units
  • W1, W2 and W3 are the molecular weights in g/mol of the first, nonionic structural unit, the cationic structural unit, and the second nonionic structural unit (if any), respectively.
  • mol% refers to the relative molar percentage of a particular monomeric structural unit in a polymer. It is understood that within the meaning of the present invention, the relative molar percentages of all monomeric structural units that are present in the cationic polymer shall add up to 100 mol%.
  • the term "derived from” refers to monomeric structural unit in a polymer that can be made from a compound, or salts or acids thereof, or any derivative of such compound, i.e., with one or more substituents. Preferably, such structural unit is made directly from the compound in issue.
  • structural unit derived from (meth)acrylamide refers to monomeric structural unit in a polymer that can be made from (meth)acrylamide, or salts or acids thereof, or any derivative thereof with one or more substituents.
  • such structural unit is made directly from (meth)acrylamide.
  • the term "(meth)acrylamide” refers to either methacrylamide or acrylamide, and it is abbreviated herein as "AAm.”
  • ammonium salt or “ammonium salts” as used herein refers to various compounds selected from the group consisting of ammonium chloride, ammonium fluoride, ammonium bromide, ammonium iodine, ammonium bisulfate, ammonium alkyl sulfate, ammonium dihydrogen phosphate, ammonium hydrogen alkyl phosphate, ammonium dialkyl phosphate, and the like.
  • diallyl dimethyl ammonium salts as described herein include, but are not limited to: diallyl dimethyl ammonium chloride (DADMAC), diallyl dimethyl ammonium fluoride, diallyl dimethyl ammonium bromide, diallyl dimethyl ammonium iodine, diallyl dimethyl ammonium bisulfate, diallyl dimethyl ammonium alkyl sulfate, diallyl dimethyl ammonium dihydrogen phosphate, diallyl dimethyl ammonium hydrogen alkyl phosphate, diallyl dimethyl ammonium dialkyl phosphate, and combinations thereof.
  • the ammonium salt is ammonium chloride.
  • the terms “comprising,” “comprises,” “include”, “includes” and “including” are meant to be non-limiting.
  • the term “consisting of' or “consisting essentially of' are meant to be limiting, i.e., excluding any components or ingredients that are not specifically listed except when they are present as impurities.
  • the term “substantially free of' as used herein refers to either the complete absence of an ingredient or a minimal amount thereof merely as impurity or unintended byproduct of another ingredient.
  • solid includes granular, powder, bar and tablet product forms.
  • fluid includes liquid, gel, paste and gas product forms.
  • liquid refers to a fluid having a liquid having a viscosity of from 1 to 2000 mPa*s at 25°C and a shear rate of 20 sec- 1 .
  • the viscosity of the liquid may be in the range of from 200 to 1000 mPa*s at 25°C at a shear rate of 20 sec- 1 .
  • the viscosity of the liquid may be in the range of from 200 to 500 mPa*s at 25°C at a shear rate of 20 sec- 1 .
  • test methods that are disclosed in the Test Methods Section of the present application must be used to determine the respective values of the parameters of Applicants' inventions are described and claimed herein.
  • the cationic polymer used in the present invention is a copolymer that consists of at least two types of structural units.
  • the structural units, or monomers, can be incorporated in the cationic polymer in a random format or can be in a blocky format.
  • such cationic polymer is a copolymer that contains only the first and second structural units as described hereinabove, i.e., it is substantially free of any other structural components, either in the polymeric backbone or in the side chains.
  • such cationic polymer is a terpolymer that contains only the first, second and third structural units as described hereinabove, substantially free of any other structural components.
  • it can include one or more additional structural units besides the first, second and third structural units described hereinabove.
  • the first structural unit in the cationic polymer of the present invention is a nonionic structural unit derived from (meth)acrylamide (AAm).
  • the cationic polymer contains from 60 mol% to 95 mol% of the AAm-derived structural unit.
  • the second structural unit in the cationic polymer is a cationic structural unit that can be derived from any suitable water-soluble cationic ethylenically unsaturated monomer, such as, for example, N,N-dialkylaminoalkyl methacrylate, N,N-dialkylaminoalkyl acrylate, N,N-dialkylaminoalkyl acrylamide, N,N-dialkylaminoalkylmethacrylamide, methacylamidoalkyl trialkylammonium salts, acrylamidoalkylltrialkylamminium salts, vinylamine, vinyl imidazole, quaternized vinyl imidazole and diallyl dialkyl ammonium salts.
  • any suitable water-soluble cationic ethylenically unsaturated monomer such as, for example, N,N-dialkylaminoalkyl methacrylate, N,N-dialkylaminoalkyl acrylate, N,N-dialkylamin
  • the second, cationic structural unit is derived from a monomer selected from the group consisting of diallyl dimethyl ammonium salts (DADMAS), N,N-dimethyl aminoethyl acrylate, N,N-dimethyl aminoethyl methacrylate (DMAM), [2-(methacryloylamino)ethyl]trimethylammonium salts, N,N-dimethylaminopropyl acrylamide (DMAPA), N,N-dimethylaminopropyl methacrylamide (DMAPMA), acrylamidopropyl trimethyl ammonium salts (APTAS), methacrylamidopropyl trimethylammonium salts (MAPTAS), and quaternized vinylimidazole (QVi).
  • DADMAS diallyl dimethyl ammonium salts
  • DMAM N,N-dimethyl aminoethyl acrylate
  • DMAM N,N-dimethyl aminoethyl methacrylate
  • the second, cationic structural unit is derived from a diallyl dimethyl ammonium salt (DADMAS), as described hereinabove.
  • DADMAS diallyl dimethyl ammonium salt
  • the second, cationic structural unit can be derived from a [2-(methacryloylamino)ethyl]tri-methylammonium salt, such as, for example, [2-(methacryloylamino)ethyl]tri-methylammonium chloride, [2-(methacryloylamino)ethyl]trimethylammonium fluoride, [2-(methacryloylamino)ethyl]tri-methylammonium bromide, [2-(methacryloylamino)ethyl]tri-methylammonium iodine, [2 -(methacryloylamino)ethyl]trimethylammonium bisulfate, [2-(methacryloylamino)ethyl]tri-methylammonium alkyl sulfate, [2-(methacryloylamino)ethyl]tri-methylammonium dihydrogen phosphate, [2-(methacryloyla
  • the second, cationic structural unit can be derived from APTAS, which include, for example, acrylamidopropyl trimethyl ammonium chloride (APTAC), acrylamidopropyl trimethyl ammonium fluoride, acrylamidopropyl trimethyl ammonium bromide, acrylamidopropyl trimethyl ammonium iodine, acrylamidopropyl trimethyl ammonium bisulfate, acrylamidopropyl trimethyl ammonium alkyl sulfate, acrylamidopropyl trimethyl ammonium dihydrogen phosphate, acrylamidopropyl trimethyl ammonium hydrogen alkyl phosphate, acrylamidopropyl trimethyl ammonium dialkyl phosphate, and combinations thereof.
  • APTAS acrylamidopropyl trimethyl ammonium chloride
  • APTAS acrylamidopropyl trimethyl ammonium fluoride
  • the second, cationic structural unit can be derived from a MAPTAS, which includes, for example, methacrylamidopropyl trimethylammonium chloride (MAPTAC), methacrylamidopropyl trimethylammonium fluoride, methacrylamidopropyl trimethylammonium bromide, methacrylamidopropyl trimethylammonium iodine, methacrylamidopropyl trimethylammonium bisulfate, methacrylamidopropyl trimethylammonium alkyl sulfate, methacrylamidopropyl trimethylammonium dihydrogen phosphate, methacrylamidopropyl trimethylammonium hydrogen alkyl phosphate, methacrylamidopropyl trimethylammonium dialkyl phosphate, and combinations thereof.
  • MAPTAS methacrylamidopropyl trimethylammonium chloride
  • MAPTAS methacrylamidopropyl trimethylammonium fluor
  • the second, cationic structural unit is derived from DADMAC, MAPTAC, APTAC, or QVi. Most preferably, the second, cationic structural unit as mentioned herein is made directly from DADMAC.
  • the second, cationic structural unit is preferably present in the cationic polymer in an amount ranging from 5 mol% to 40 mol%.
  • the third structural unit which is optional for the cationic polymer of the present invention, is a nonionic structural unit that is different from the first, nonionic structure unit. It may be derived from a vinyl-based nonionic monomer, such as vinylpyrrolidone (VP), vinyl acetate, vinyl alcohol, vinyl formamide, vinyl acetamide, vinyl alkyl ether, vinyl pyridine, vinyl imidazole, vinyl caprolactam, and combinations thereof. More preferably, the third, nonionic structural unit of the cationic polymer is derived from VP.
  • the cationic polymer may contain from 0 mol% to 25 mol% of the third, nonionic structural unit.
  • the cationic polymer does not contain any of the third, nonionic structural unit (i.e., the third, nonionic structural unit is present at 0 mol%) and consists essentially only of the first and second structural units as described hereinabove.
  • Such cationic polymer is a copolymer consisting essentially of: (i) from 70 mol% to 90 mol%, of the AAm-derived first structural unit; and (ii) from 10 mol% to 30 mol%, of the second, cationic structural unit as described hereinabove.
  • the cationic polymer contains the first, second and third structural units as described hereinabove, and is substantially free of any other structural unit.
  • Such cationic polymer is a terpolymer consisting essentially of: (i) from 65 mol% to 90 mol% of the AAm-derived first structural unit; (ii) from 10 mol% to 20 mol%, of the second, cationic structural unit as described hereinabove; and (iii) f from 1 mol% to 20 mol%, of the third, nonionic structural unit as described hereinabove.
  • the specific molar percentage ranges of the first, second, and optionally third structural units of the cationic polymer as specified hereinabove is critical for optimizing the sudsing profile generated by the laundry detergent compositions containing such cationic polymer during the wash and rinse cycles.
  • Laundry detergent compositions containing the cationic polymer of the present invention are characterized by an optimized sudsing profile defined by: (1) a Wash Suds Index (WSI) of more than 70%, preferably more than 80%, and more preferably more than 100%; and (2) a Rinse Suds Index (RSI) of less than 40%, preferably less than 30%, and more preferably less than 20%, as determined by the Sudsing Profile Test described hereinafter.
  • WSI Wash Suds Index
  • RSI Rinse Suds Index
  • the laundry detergent composition of the present invention has an optimal sudsing profile that is defined by a WSI of more than 70% and a RSI of less than 40%, preferably a WSI of more than 80% and RSI of less than 30%, and more preferably a WSI of more than 100% and a RSI of less than 20%.
  • the specific Molecular Weight range for the cationic polymer as specified hereinabove also provides improved sudsing profile. More importantly, such Molecular Weight range is particularly effective in reducing the whiteness loss that is commonly seen in fabrics after they have been exposed to multiple washes. Cationic polymers have been known to contribute to fabric whiteness loss, which is a limiting factor for wider usage of such polymers. However, inventors of the present invention have discovered that by controlling the Molecular Weight of the cationic polymer within a specific range, i.e., from 10,000 to 1,000,000 Daltons, and preferably from 15,000 to 700,000 Daltons, and most preferably from 20,000 to 350,000 Daltons, the fabric whiteness loss can be effectively reduced in comparison with conventional cationic polymers.
  • laundry detergent compositions containing the cationic polymer of the present invention are characterized by a Relative Whiteness Loss Percentage (WLP) of not more than 100%, preferably not more than 50%, and more preferably not more than 10%, as determined by the Whiteness Loss Test described hereinafter.
  • WLP Relative Whiteness Loss Percentage
  • cationic polymers containing the above-described first, second, and optionally third structural units in various combinations have been previously used in laundry detergent compositions, typically as deposition aid polymers.
  • the conventional cationic polymers used as deposition aids in laundry detergents have different monomeric ratios and/or significantly higher Molecular Weights from the cationic polymers of this invention.
  • the inventors of the present invention have discovered, surprisingly and unexpectedly, that cationic polymers with the specific monomeric make-up and the specific Molecular Weight as defined hereinabove can provide superior sudsing profile and reduced fabric whiteness loss, in comparison with the conventional cationic polymers. Further, there seem to be absent of any terpolymer containing or consisting of all three structural units.
  • product viscosity can be impacted by Molecular Weight and cationic content of the cationic polymer.
  • Molecular weights of polymers of the present invention are also selected to minimize impact on product viscosity to avoid product instability and stringiness associated with high molecular weight and/or broad molecular weight distribution.
  • the amount of the cationic polymer of the present invention in the laundry detergent or cleaning composition is not particularly limited, as long as it is effective for providing an optimal sudsing profile as defined herein above, i.e., with significant suds volume reduction during the rinse cycle and insignificant suds volume reduction during the wash cycle.
  • the cationic polymer is provided in the cleaning or laundry detergent composition at an amount ranging from 0.01 wt% to 15 wt%, from 0.05 wt% to 10 wt%, from 0.1 wt% to 5 wt%, and from 0.2 wt% to 1wt%.
  • the cationic polymer is substantially free of carrier particles or coating. This is advantageous as it avoids an extra step and cost associated with the incorporation of these materials.
  • Cleaning compositions or laundry detergent compositions of the present invention includes a unique surfactant system that is enriched with an anionic surfactant that is selected from the group consisting of C 10 -C 20 linear or branched alkylalkoxy sulfates (AES) having an average degree of alkoxylation ranging from 0.1 to 5.
  • AES alkylalkoxy sulfates
  • the term "enriched” as used herein refers to the relatively higher weight ratio of the AES surfactant(s) over other surfactants, i.e., the AES surfactant(s) is present in the surfactant system in an amount that is equal to or greater than any other detersive surfactant contained by the surfactant system. Without being bound by any theory, it is believed that such an AES-enriched surfactant system is particularly effective in optimizing the sudsing benefit of the cationic polymers of the present invention.
  • the AES surfactants preferably are C 10 -C 20 linear or branched alkylethoxy sulfates. More preferably, the AES surfactants have an average degree of alkoxylation ranging from 0.3 to 4, and most preferably from 0.5 to 3.
  • the AES surfactants is provided at levels ranging from 20% or more (i.e., from 20% to 100%), more preferably at 40% or more (i.e., from 40% to 100%), still more preferably at 50% or more (i.e., from 50% to 100%), and most preferably at 60% or more (i.e., from 60% to 100%), by total weight of the surfactant system.
  • the surfactant system of the present invention may contain, in addition to the AES surfactants, one or more other detersive surfactants selected from the group consisting of anionic, nonionic, zwitterionic, amphoteric or cationic type or can comprise compatible mixtures of these types.
  • Useful other anionic surfactants can themselves be of several different types.
  • water-soluble salts of the higher fatty acids i.e., "soaps"
  • alkali metal soaps such as the sodium, potassium, ammonium, and alkyl ammonium salts of higher fatty acids containing from 8 to 24 carbon atoms, and preferably from 12 to 18 carbon atoms.
  • Soaps can be made by direct saponification of fats and oils or by the neutralization of free fatty acids.
  • Particularly useful are the sodium and potassium salts of the mixtures of fatty acids derived from coconut oil and tallow, i.e., sodium or potassium tallow and coconut soap.
  • non-soap other anionic surfactants which are suitable for use herein include the water-soluble salts, preferably the alkali metal, and ammonium salts, of organic sulfuric reaction products having in their molecular structure an alkyl group (included in the term "alkyl” is the alkyl portion of acyl groups) containing from 10 to 20 carbon atoms and a sulfonic acid or sulfuric acid ester group.
  • Examples of this group of synthetic anionic surfactants include, but are not limited to: a) the sodium, potassium and ammonium alkyl sulfates with either linear or branched carbon chains, especially those obtained by sulfating the higher alcohols (C 10 -C 20 carbon atoms), such as those produced by reducing the glycerides of tallow or coconut oil; b) the sodium and potassium alkyl benzene sulfonates in which the alkyl group contains from 10 to 20 carbon atoms in either a linear or a branched carbon chain configuration, preferably a linear carbon chain configuration; c) the sodium, potassium and ammonium alkyl sulphonates in which the alkyl group contains from 10 to 20 carbon atoms in either a linear or a branched configuration; d) the sodium, potassium and ammonium alkyl phosphates or phosphonates in which the alkyl group contains from 10 to 20 carbon atoms in either a linear or a branched configuration,
  • Preferred for the practice of the present invention are surfactant systems that contain one or more C 10 -C 20 linear alkyl benzene sulphonates (LAS) in addition to the AES surfactants described hereinabove.
  • the LAS is present in an amount ranging from 1% to 45%, more preferably from 5% to 40%, and most preferably from 10% to 35%, by total weight of the surfactant system.
  • the weight ratio of AES to LAS is equal to or greater than 1.2, more preferably equal to or greater than 1.5, still more preferably equal to or greater than 2, and most preferably equal to or greater than 5.
  • the surfactant system contains one or more nonionic surfactants in addition to the AES surfactants described hereinabove.
  • Suitable nonionic surfactants are those of the formula R 1 (OC 2 H 4 ) n OH, wherein R 1 is a C 8 -C 18 alkyl group or alkyl phenyl group, and n is from 1 to 20.
  • Suitable nonionic surfactants are C 8 -C 18 alkyl alkoxylated alcohols (NI) having an average degree of alkoxylation from 1 to 20.
  • the NI can be present in an amount ranging from 1% to 45%, more preferably from 5% to 40%, and most preferably from 10% to 35%, by total weight of the surfactant system.
  • the weight ratio of AES to NI is equal to or greater than 1.2, more preferably equal to or greater than 1.5, still more preferably equal to or greater than 2, and most preferably equal to or greater than 5.
  • the surfactant system contains both LAS and NI in addition to AES.
  • the weight ratio between LAS and NI may range from 1:20 to 20:1, preferably from 1:15 to 15:1, more preferably from 1:10 to 10:1, and most preferably from 1:5 to 5:1.
  • a surfactant system that is particularly preferred for the practice of the present invention is one that comprising or consisting essentially of AES, LAS and NI at weight ratios ranging from 9:0.5:0.5 to 5:4:1 to 5:0.1:5.
  • Particularly preferred amphoteric surfactants are amine oxides, such as, for example, alkyl dimethyl amine oxide or alkyl amido propyl dimethyl amine oxide, more preferably alkyl dimethyl amine oxide and especially coco dimethyl amino oxide.
  • Amine oxides may contain a linear or branched alkyl moiety.
  • amphoteric and/or cationic surfactants are well known for use in laundry detergents and are typically present at levels from 0.2% or 1% to 40% or 50%, by total weight of the surfactant system.
  • the surfactant system may be present in an amount ranging from 1% to 99%, more preferably from 1% to 80%, and more preferably from 5% to 50% by total weight of the cleaning or detergent compositions of the present invention.
  • the present invention provides a cleaning composition comprising the cationic polymer and the surfactant system as mentioned hereinabove.
  • the cleaning composition is suitable for laundry detergent application, for example: laundry, including automatic washing machine laundering or hand-washing, or cleaning auxiliaries, such as for example, bleach, rinse aids, additives or pre-treat types.
  • the laundry detergent composition is a liquid laundry detergent and can be a fully formulated laundry detergent product. Liquid compositions contained in encapsulated and/or unitized dose products are included, as are compositions which comprise two or more separate but jointly dispensable portions. More preferably, the laundry detergent composition is a liquid laundry detergent composition designed for hand-washing, where the improved suds benefit or superior sudsing profile is most evident to the consumer.
  • the liquid laundry detergent composition preferably contains water as an aqueous carrier, and it can contain either water alone or mixtures of organic solvent(s) with water as carrier(s).
  • Suitable organic solvents are linear or branched lower C 1 -C 8 alcohols, diols, glycerols or glycols; lower amine solvents such as C 1 -C 4 alkanolamines, and mixtures thereof.
  • Exemplary organic solvents include 1,2-propanediol, ethanol, glycerol, monoethanolamine and triethanolamine.
  • the carriers are typically present in a liquid composition at levels in the range of from 0.1% to 98%, preferably from 10% to 95%, more preferably from 25% to 75% by total weight of the liquid composition.
  • water is from 85 to 100 wt% of the carrier.
  • the liquid laundry detergent composition of the present invention has a viscosity from 1 to 2000 centipoise (1-2000 mPa ⁇ s), or from 200 to 800 centipoises (200-800 mPa ⁇ s).
  • the viscosity can be determined using a Brookfield viscometer, No. 2 spindle, at 60 RPM/s, measured at 25°C.
  • a silicone-derived anti-foaming agent is used in combination with the cationic polymer and the surfactant system in a cleaning composition, or preferably a laundry detergent composition.
  • a cleaning composition or preferably a laundry detergent composition.
  • such silicone-derived anti-foaming agent may further improve the sudsing profile of the cleaning composition.
  • the silicone-derived anti-foaming agent can be any suitable organosilicones, including, but not limited to: (a) non-functionalized silicones such as polydimethylsiloxane (PDMS); and (b) functionalized silicones such as silicones with one or more functional groups selected from the group consisting of amino, amido, alkoxy, alkyl, phenyl, polyether, acrylate, siliconehydride, mercaptoproyl, carboxylate, sulfate phosphate, quaternized nitrogen, and combinations thereof.
  • the organosilicones suitable for use herein have a viscosity ranging from 10 to 700,000 CSt (centistokes) at 20°C. In other embodiments, the suitable organosilicones have a viscosity from 10 to 100,000 CSt.
  • Polydimethylsiloxanes can be linear, branched, cyclic, grafted or cross-linked or cyclic structures.
  • the detergent compositions comprise PDMS having a viscosity of from 100 to 700,000 CSt at 20°C.
  • Exemplary functionalized silicones include but are not limited to aminosilicones, amidosilicones, silicone polyethers, alkylsilicones, phenyl silicones and quaternary silicones.
  • a preferred class of functionalized silicones comprises cationic silicones produced by reacting a diamine with an epoxide.
  • composition of the present invention contains organosilicone emulsions, which comprise organosilicones dispersed in a suitable carrier (typically water) in the presence of an emulsifier (typically an anionic surfactant).
  • organosilicones are in the form of microemulsions having an average particle size in the range from 1 nm to 150 nm, or from 10 nm to 100 nm, or from 20 nm to 50 nm.
  • the silicone-derived anti-foaming agent as mentioned hereinabove can be present in the cleaning composition in an amount ranging from 0.01% to 5%, preferably from 0.05% to 2%, and more preferably from 0.1 % to 1 %, by total weight of the composition.
  • the liquid laundry detergent composition contains from 0.1 wt% to 5 wt%, preferably from 0.5 wt% to 3 wt%, more preferably from 1 wt% to 1.5 wt%, of one or more fatty acids and/or alkali salts thereof.
  • Suitable fatty acids and/or salts that can be used in the present invention include C 10 -C 22 fatty acids or alkali salts thereof.
  • alkali salts include monovalent or divalent alkali metal salts like sodium, potassium, lithium and/or magnesium salts as well as the ammonium and/or alkylammonium salts of fatty acids, preferably the sodium salt.
  • Preferred fatty acids for use herein contain from 12 to 20 carbon atoms, and more preferably 12 to 18 carbon atoms.
  • Exemplary fatty acids that can be used maybe selected from caprylic acid, capric acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, sapienic acid, stearic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid, linoelaidic acid, ⁇ -linoelaidic acid, arachidic acid, arachidonic acid, eicosapentaenoic acid, behenic acid, erucic acid, and docosahexaenoic acid, and mixtures thereof.
  • the liquid detergent composition of the present invention comprises one or more saturated fatty acids, such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, and mixtures thereof.
  • saturated fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, and mixtures thereof.
  • lauric acid, myristic acid and palmitic acid are particularly preferred.
  • the balance of the laundry detergent typically contains from 5 wt% to 70 wt%, or 10 wt% to 60 wt% adjunct ingredients.
  • Suitable detergent ingredients include: transition metal catalysts; imine bleach boosters; enzymes such as amylases, carbohydrases, cellulases, laccases, lipases, bleaching enzymes such as oxidases and peroxidases, proteases, pectate lyases and mannanases; source of peroxygen such as percarbonate salts and/or perborate salts, preferred is sodium percarbonate, the source of peroxygen is preferably at least partially coated, preferably completely coated, by a coating ingredient such as a carbonate salt, a sulphate salt, a silicate salt, borosilicate, or mixtures, including mixed salts, thereof; bleach activator such as tetraacetyl ethylene diamine, oxybenzene sulphonate bleach activators such as nonanoyl oxybenzene sul
  • laundry detergent powder may also be especially preferred for the laundry detergent powder to comprise low levels, or even be essentially free, of builder.
  • the term “essentially free” means that the composition "comprises no deliberately added” amount of that ingredient.
  • the laundry detergent composition of the present invention comprises no builder.
  • the cationic polymer as received from the manufacturer can be introduced directly into a preformed mixture of two or more of the other components of the final composition. This can be done at any point in the process of preparing the final composition, including at the very end of the formulating process. That is, the cationic polymer can be added to a pre-made liquid laundry detergent to form the final composition of the present invention.
  • the cationic polymer can be premixed with an emulsifier, a dispersing agent or a suspension agent to form an emulsion, a latex, a dispersion, a suspension, and the like, which is then mixed with other components (such as the AES, LAS, NI, and/or silicone-derived anti-foaming agent, etc.) of the final composition.
  • these components can be added in any order and at any point in the process of preparing the final composition.
  • a third example involves mixing the cationic polymer with one or more adjuncts of the final composition and adding this premix to a mixture of the remaining adjuncts.
  • the present invention is directed to a method of cleaning fabric, the method comprising the steps of: (i) providing a laundry detergent as described above; (ii) forming a laundry liquor by diluting the laundry detergent with water; (iii) washing fabric in the laundry liquor; and (iv) rinsing the fabric in water, wherein after 2 or less rinses, preferably after 1 rinse, the laundry liquor is substantially free of suds, or at least 75%, preferably at least 85%, more preferably 95%, and even more preferably at least 99% of a surface area of the laundry liquor is free from suds.
  • the present invention is also directed to a method of saving water during laundering, the method comprising the steps of: (i) providing a laundry detergent as described above; (ii) diluting the cleaning composition with wash water in a container to form a laundry liquor; (iii) washing laundry in the laundry liquor; and (iv) rinsing the laundry, wherein after 2 or less rinses, preferably after 1 rinse, the laundry liquor is substantially free of suds.
  • the method of laundering fabric may be carried out in a top-loading or front-loading automatic washing machine, or can be used in a hand-wash laundry application, which is particularly preferred in the present invention.
  • compositions of the present invention comprising the cationic polymer.
  • assays must be used in order that the invention described and claimed herein may be fully understood.
  • the weight-average molecular weight (Mw or "Molecular Weight") of a polymer material of the present invention is determined by Size Exclusion Chromatography (SEC) with differential refractive index detection (RI).
  • SEC Size Exclusion Chromatography
  • RI differential refractive index detection
  • One suitable instrument is Agilent® GPC-MDS System using Agilent® GPC/SEC software, Version 1.2 (Agilent, Santa Clara, USA).
  • SEC separation is carried out using three hydrophilic hydroxylation polymethyl methacrylate gel columns (Ultrahydrogel 2000-250-120 manufactured by Waters, Milford, USA) directly joined to each other in a linear series and a solution of 0.1M sodium chloride and 0.3% trifluoroacetic acid in DI-water, which is filtered through 0.22 ⁇ m pore size GVWP membrane filter (MILLIPORE, Massachusetts, USA).
  • the RI detector needs to be kept at a constant temperature of 5 -10°C above the ambient temperature to avoid baseline drift. It is set to 35°C.
  • the injection volume for the SEC is 100 ⁇ L. Flow rate is set to 0.8 mL/min.
  • Each test sample is prepared by dissolving the concentrated polymer solution into the above-described solution of 0.1M sodium chloride and 0.3% trifluoroacetic acid in DI water, to yield a test sample having a polymer concentration of 1 to 2 mg/mL.
  • the sample solution is allowed to stand for 12 hours to fully dissolve, and then stirred well and filtered through a 0.45 ⁇ m pore size nylon membrane (manufactured by WHATMAN, UK) into an auto sampler vial using a 5mL syringe.
  • Samples of the polymer standards are prepared in a similar manner. Two sample solutions are prepared for each test polymer. Each solution is measured once. The two measurement results are averaged to calculate the Mw of the test polymer.
  • the solution of 0.1M sodium chloride and 0.3% trifluoroacetic acid in DI water is first injected onto the column as the background.
  • the weight-average molecular weight (Mw or "Molecular Weight”) of the test sample polymer is calculated using the software that accompanies the instrument and selecting the menu options appropriate for narrow standard calibration modelling.
  • a third-order polynomial curve is used to fit the calibration curve to the data points measured from the Poly(2-vinylpyridin) standards.
  • the data regions used for calculating the weight-average molecular weight are selected based upon the strength of the signals detected by the RI detector. Data regions where the RI signals are greater than 3 times the respective baseline noise levels are selected and included in the Mw calculations. All other data regions are discarded and excluded from the Mw calculations. For those regions which fall outside of the calibration range, the calibration curve is extrapolated for the Mw calculation.
  • the selected data region is cut into a number of equally spaced slices.
  • the height or Y-value of each slice from the selected region represents the abundance (Ni) of a specific polymer (i), and the X-value of each slice from the selected region represents the molecular weight (Mi) of the specific polymer (i).
  • Each of the monomers in the cationic polymer is quantified by high pressure liquid chromatography (HPLC) according to the follows: Measuring device: L-7000 series (Hitachi Ltd.) Detector: UV detector, L-7400 (Hitachi Ltd.) Column: SHODEX RSpak DE-413 (product of Showa Denko K. K.) Temperature: 40°C Eluent: 0.1% phosphoric acid aqueous solution Flow Velocity: 1.0 mL/ min
  • the sudsing profile of the detergent composition herein are measured by employing a suds cylinder tester (SCT).
  • SCT suds cylinder tester
  • the SCT has a set of 8 cylinders. Each cylinder is typically 60 cm long and 9 cm in diameter and may be together rotated at a rate of 20-22 revolutions per minute (rpm).
  • This method is used to assay the performance of laundry detergent to obtain a reading on ability to generate suds as well as its suds stability and rinse suds performance.
  • the following factors affect results and therefore should be controlled properly: (a) concentration of detergent in solution, (b) water hardness, (c) water temperature of water, (d) speed and number of revolutions, (e) soil load in the solution, and (f) cleanliness of the inner part of the tubes.
  • the performance is determined by comparing the suds height generated during the washing stage by the laundry detergent containing the cationic polymer of the present invention or a comparative cationic polymer not falling within the scope of the present invention, versus control laundry detergent that does not contain any cationic polymer.
  • the height of suds generated by each test composition is measured by recording the total suds height (i.e., height of suds plus wash liquor) minus the height of the wash liquor alone. 1.
  • 2. Pour the sample aliquot to the tubes. Put in the rubber stopper and lock the tubes in place. 3.
  • Average suds height of different categories described above are calculated by average the height data of each replicate.
  • the WSI is indicative of how much suds is generated during the wash cycle by a test sample containing a cationic polymer (either an inventive cationic polymer with the specific monomeric composition and Molecular Weight as defined hereinabove, or a comparative cationic polymer not falling within the scope of the present invention) that may have adverse impact on the wash suds, in comparison with the suds generated by a control sample that does not contain any of such cationic polymer. Therefore, the higher the WSI percentage, the more suds are generated during wash, and the better the performance.
  • a cationic polymer either an inventive cationic polymer with the specific monomeric composition and Molecular Weight as defined hereinabove, or a comparative cationic polymer not falling within the scope of the present invention
  • the RSI is indicative of how much suds is left during the rinse cycle by a test sample containing a cationic polymer (either an inventive cationic polymer with the specific monomeric composition and Molecular Weight as defined hereinabove, or a comparative cationic polymer not falling within the scope of the present invention) that may be effective in reducing the rinse suds, in comparison with the suds left by a control sample that does not contain any of such cationic polymer. Therefore, the lower the RSI percentage, the more suds reduction is effectuated during rinse, and the better the performance.
  • a cationic polymer either an inventive cationic polymer with the specific monomeric composition and Molecular Weight as defined hereinabove, or a comparative cationic polymer not falling within the scope of the present invention
  • An optimal sudsing profile as defined within the meaning of this invention includes a WSI of more than 70% and a RSI of less than 40%, preferably a WSI of more than 80% and a RSI of less than 30%, and more preferably a WSI of more than 100% (i.e., a suds boosting effect during wash) and a RSI of less than 20%.
  • Test 4 Fabric Whiteness Loss Test (Fast Wash Method)
  • the steps for assaying the whiteness maintenance of the laundry detergent of the present invention are as follows: (1) Formulation preparation: Formulate detergent compositions with or without polymers of interest. (2) Solution Preparation:
  • WLP is the relative fabric whiteness loss (expressed in percentage) caused by a detergent composition containing a cationic polymer (which is typically known to cause some fabric whiteness loss) over that caused by a control detergent composition not containing such cationic polymer
  • a larger WLP is indicative of more relative fabric whiteness loss observed in comparison with the control sample. Therefore, it is in turn indicative of poorer whiteness performance of the cationic polymer, i.e., its presence causes more fabric whiteness loss in the laundry detergent.
  • the WLP is a negative number, it is indicative of the fact that the presence of the cationic polymer not only does not cause fabric whiteness loss, but actually imparts whiteness benefit to the fabric, which is the most desirable.
  • the wash and rinse suds volumes of the laundry detergent compositions of the present invention can also be measured via the SITA Foam Tester (model: R-2000) made by SITA Messtechnik GmbH (Germany).
  • the SITA Foam Tester R-2000 utilizes a patented rotor of defined geometry for foam generation. The rotor mechanically inserts air bubbles into the liquid. The foam volume is measured by an array of sensor needles, which scan the foam surface. Using an array of sensor needles permits exact measurement of the foam volume even with uneven foam surfaces. The output is given as average milliliters of foam height per measure. Foam height measurements are recorded every 10 seconds while stirring of the test composition continues - this occurs 15 times in total (i.e., resulting in 15 measurements in total).
  • the Stir Count as used herein, means the total number of stirring intervals in one test.
  • the instrument settings below are used in the suds volume measurements.
  • the final suds volume for each detergent composition is the average of 6 suds readings from the 10 th to 15 th measurement.
  • This method is used to evaluate the sudsing profile of laundry detergent and obtain a reading on wash suds and rinse suds volume.
  • the following factors affect results and therefore should be controlled properly: (a) concentration of detergent in solution, (b) water hardness, (c) water temperature, (d) soil load in the solution, (e) instrument settings, and (f) cleanliness of the sample vessel of SITA.
  • the performance is determined by comparing the suds volume generated by a laundry detergent containing the cationic polymer versus the laundry detergent without the cationic polymer.
  • test liquid laundry detergent compositions are prepared, including: (1) a control composition containing no cationic polymer, (2) a first inventive composition containing 0.5 wt% of the inventive polymer 3 as described hereinabove in Table II of Example I; (3) a second inventive composition containing 0.5 wt% of the inventive polymer 4 as described hereinabove in Table II of Example I; (4) a third inventive composition containing 0.5 wt% of the inventive polymer 5 as described hereinabove in Table II of Example I; (5) a first inventive composition containing 0.5 wt% of the inventive polymer 11 as described hereinabove in Table II of Example I; (6) a second inventive composition containing 0.5 wt% of the inventive polymer 12 as described hereinabove in Table II of Example I; and (7) a third inventive composition containing 0.5 wt% of the inventive polymer 13 as described hereinabove in Table II of Example I.
  • inventive compositions containing inventive cationic polymers of the present invention provide optimized sudsing profiles characterized by a satisfactory wash suds volume (a WSI of more than 70%) and significantly lower rinse suds volume (a RSI of less than 40%) in comparison with the control composition.
  • the cationic polymers of the present invention also demonstrate observable sudsing benefit across different detergent dosing levels, i.e., the laundry detergent composition containing such cationic polymers may be added into water at different amounts to form laundering liquor of different detergent concentrations. Because different consumers may have very different dosing habits when it comes to laundry detergents, with some more prone to over-dosing and others more prone to under-dosing, it is an important advantage if the sudsing benefit of the present invention is observable across a wider dosing range, thereby accommodating different consumer dosing habits.
  • test liquid laundry detergent compositions including: (1) a control composition containing no cationic polymer, (2) 5 inventive compositions, each of which containing the same ingredients as the control composition but further including 0.5 wt% of an inventive polymer within the scope of the present invention; and (3) 7 comparative compositions, each of which containing the same ingredients as the control composition but further including 0.5 wt% of a comparative polymer that has either AAm/DADMAC molar percentages falling outside of the scope of the present invention, or a Molecular Weight falling outside of the scope of the present invention.
  • Sudsing Profile Test as described hereinabove is carried out for each of these thirteen (13) test compositions by dissolving each composition in water having a water hardness level of 16 gpg to form a laundering liquor containing 5000ppm of the test composition.
  • the Sudsing Profile Test is repeated several times (the number of actual tests conducted for each test composition is listed at below), and the suds data provided hereinafter is obtained by averaging the data obtained from the repetition.
  • the Wash Suds Index (WSI) and Rinse Suds Index (RSI) of each of the seven (7) comparative compositions and five (5) inventive compositions are calculated based on the wash suds volume and rinse suds volume measured for such compositions in comparison with the control composition.
  • the comparative polymers contained in the comparative compositions have either AAm/DADMAC molar percentages or Molecular Weights falling outside of the scope of the present invention.
  • the above data shows that only the inventive polymers with the appropriate AAm/DADMAC molar percentages and Molecular Weights provide optimal sudsing profiles, i.e., having a satisfactory wash suds volume quantified by a WSI of more than 70% and a sufficiently reduced rinse suds volume quantified by a RSI of less than 40%.
  • Three (3) liquid laundry detergent compositions are prepared, including: (1) a control composition containing no cationic polymer, (2) a comparative composition containing 0.5 wt% of a comparative polymer, MerquatTM S, which contains 70 mol% of AAm and 30 mol% of DADMAC with a Molecular Weight of 3552.2K Dalton; (3) an inventive composition containing 0.5 wt% of the inventive polymer 2 as described hereinabove in Table II of Example I, MerquatTM 740, which contains 76 mol% of AAm and 24 mol% of DADMAC with a Molecular Weight of 61.5K Dalton.
  • Fabric Whiteness Loss Test using the fast wash method as described in Test 4 hereinabove is carried out for each of these three (3) test compositions.
  • the fabric used for conducting the test is polyester.
  • the Whiteness Loss Index (i.e., ⁇ WLI) is measured for each of the control composition, the comparative composition, and the inventive composition.
  • the Relative Whiteness Loss Percentage (WLP) of both the comparative composition and inventive composition are calculated based on their ⁇ WLI in comparison with that of the control composition. Following are the measurement results: Table X Control Composition Comparative Composition Inventive Composition ⁇ WLI 26.8 53.5 13.9 WLP 0% 99.6% -48.1% * Measured at 90-110 revolutions. ** Measured at 130-150 revolutions.
  • WLP is the relative percentage fabric whiteness loss caused by a detergent composition containing a cationic polymer (either an inventive polymer or a comparative polymer) over that caused by a control detergent composition not containing such cationic polymer, the larger the WLP, the more relative fabric whiteness loss is caused by addition of the specific cationic polymer, which is indicative of poorer whiteness performance of such cationic polymer.
  • the comparative polymer contained in the comparative composition and the inventive polymer 2 contained in the inventive composition have similar AAm and DADMAC molar percentages, but the inventive polymer 2 has a significantly lower Molecular Weight that falls within the scope of the present invention, while the comparative polymer has a high Molecular Weight that does not fall within the scope of the present invention.
  • the comparative composition has a WLP as high as 99.6%, which is indicative of very poor whiteness performance of the comparative cationic polymer.
  • the inventive composition has a negative WLP of -48.1%, which indicates that the presence of the inventive cationic polymer 2 not only does not cause fabric whiteness loss, but actually imparts whiteness benefit to the fabric tested.
  • a total of six (6) test liquid laundry detergent compositions are prepared, which include: (1) a Composition A containing a LAS-enriched surfactant system without any cationic polymer; (2) Composition A plus a cationic polymer of the present invention, which contains 80 mol% of AAm, 16 mol% of DADMAC, and 4 mol% of VP and has a Mw of 165,300 Daltons; (3) a Composition B containing a NI-enriched surfactant system without any cationic polymer; (4) Composition B plus the cationic polymer; (5) a Composition C containing an AES-enriched surfactant system without any cationic polymer; and (6) Composition C plus the cationic polymer.
  • the wash suds volume and the rinse suds volume of each test liquid laundry detergent composition are measured using the Sudsing Volume Test (SITA) described in Test 5.
  • SITA Sudsing Volume Test
  • wash Suds Change ⁇ Sw
  • a positive ⁇ Sw is indicative of a wash suds boosting effect
  • a negative ⁇ Sw is indicative of a wash suds suppressing effect. The more positive the ⁇ Sw, the stronger the suds boosting effect.
  • ⁇ S R Rinse Suds Change
  • a positive ⁇ S R is indicative of more rinse suds, which is undesirable, while a negative ⁇ S R is indicative of less rinse suds, which is desirable. The more negative the ⁇ S R , the stronger the suds suppressing effect.
  • the overall sudsing benefit achieved by the inventive cationic polymer from the wash cycle to the rinse cycle is recorded as a Total Suds Change ( ⁇ S W - ⁇ S R ).
  • heaving duty liquid detergents are made by mixing the ingredients listed below via conventional processes. Such heavy duty liquid detergents are used to launder fabrics that are then dried by line drying and/or machine drying. Such fabrics may be treated with a fabric enhancer prior to and/or during drying. Such fabrics exhibit a clean appearance and have a soft feel.

Claims (10)

  1. Composition détergente liquide pour le lavage du linge, comprenant :
    (a) un polymère cationique qui est soit :
    un copolymère qui est constitué sensiblement : (i) de 70 % molaires à 90 % molaires d'un premier motif structural non ionique ; et (ii) de 10 % molaires à 30 % molaires, d'un deuxième motif structural cationique ; soit :
    un terpolymère qui est constitué sensiblement : (i) de 65 % molaires à 90 % molaires du premier motif structural non ionique ; (ii) de 10 % molaires à 20 % molaires du deuxième motif structural cationique ; et (iii) de 1 % molaire à 20 % molaires, d'un troisième motif structural non ionique ;
    dans laquelle :
    le premier motif structural non ionique fabriqué à partir de (méth)acrylamide (AAm) ;
    le deuxième motif structural cationique est fabriqué à partir d'un monomère choisi dans le groupe constitué de sels de diallyl-diméthyl-ammonium (DADMAS), acrylate de N,N-diméthyl-aminoéthyle, méthacrylate de N,N-diméthyl-aminoéthyle (DMAM), sels de [2-(méthacryloylamino)éthyl]triméthylammonium, N,N-diméthylaminopropyl-acrylamide (DMAPA), N,N-diméthylaminopropyl-méthacrylamide (DMAPMA), sels d'acrylamidopropyl-triméthylammonium (APTAS), sels de méthacrylamidopropyl-triméthylammonium (MAPTAS), vinylimidazole quaternisé (QVi), et des combinaisons de ceux-ci ; et
    le troisième motif structural non ionique qui est différent du premier motif structural non ionique et est fabriqué à partir d'un monomère qui est de la vinylpyrrolidone (VP) ;
    dans laquelle ledit polymère cationique est caractérisé par une masse moléculaire moyenne en poids allant de 10 000 à 1 000 000 Daltons et est exempt d'un quelconque composant structural dérivé de silicone ; et
    (b) un système tensioactif comprenant : (i) de 20 % ou plus, en poids total dudit système tensioactif, d'un alkyléthoxy-sulfate (AES) linéaire ou ramifié en C10 à C20 ayant un degré moyen d'éthoxylation allant de 0,3 à 4 ; (ii) de 1 % à 45 %, en poids total dudit système tensioactif, d'un sulfonate d'alkylbenzène (LAS) linéaire en C10 à C20 ; et (iii) de 1 % à 45 %, en poids total dudit système tensioactif, d'un alcool alkylique alcoxylé en C8 à C18 ayant un degré moyen d'alcoxylation allant de 1 à 20 (NI), dans laquelle le rapport pondéral de l'AES au LAS est égal ou supérieur à 1,2, et dans laquelle le rapport pondéral de l'AES au NI est égal ou supérieur à 1,2.
  2. Composition détergente pour le lavage du linge selon la revendication 1, dans laquelle le rapport pondéral de l'AES à la combinaison de LAS et de NI est égal ou supérieur à 1.
  3. Composition détergente pour le lavage du linge selon la revendication 1 ou 2, dans laquelle AES est présent en une quantité de 50 % ou plus en poids total du système tensioactif.
  4. Composition détergente pour le lavage du linge selon l'une quelconque des revendications 1 à 3, dans laquelle le deuxième motif structural cationique est fabriqué à partir de DADMAS, et de préférence fabriqué à partir de chlorure de diallyl-diméthylammonium (DADMAC).
  5. Composition détergente pour le lavage du linge selon l'une quelconque des revendications 1 à 4, dans laquelle la masse moléculaire moyenne en poids du polymère cationique va de 15 000 à 700 000 Daltons, et de préférence de 20 000 à 350 000 Daltons.
  6. Composition détergente pour le lavage du linge selon l'une quelconque des revendications 1 à 5, dans laquelle ledit polymère cationique est présent en une quantité efficace pour une optimisation de profil de moussage, et dans laquelle ledit polymère cationique est présent en une quantité allant de 0,01 % à 15 %, de préférence de 0,05 % à 10 %, de 0,1 % à 5 %, et le plus préférablement de 0,2 % à 1 % en poids total de la composition détergente pour le lavage du linge.
  7. Composition détergente pour le lavage du linge selon l'une quelconque des revendications 1 à 6, comprenant en outre un agent antimousse dérivé de silicone, qui est présent en une quantité allant de 0,01 % à 5 %, de préférence de 0,05 % à 2 %, et plus préférablement de 0,1 % à 1 %, en poids total de la composition détergente pour le lavage du linge.
  8. Composition détergente pour le lavage du linge selon la revendication 1 dans laquelle la composition de lavage du linge comprend :
    (a) de 0,2 % en poids à 1 % en poids d'un polymère cationique ayant une masse moléculaire moyenne en poids allant de 20 000 à 350 000 Daltons, ledit polymère cationique étant constitué essentiellement : (i) de 70 % molaires à 90 % molaires d'un premier motif structural non ionique fabriqué à partir de (méth)acrylamide (AAm) ; et (ii) de 10 % molaires à 30 % molaires d'un deuxième motif structural cationique fabriqué à partir de chlorure de diallyl-diméthylammonium (DADMAC) ; et
    (b) de 1 % en poids à 99 % en poids d'un système tensioactif comprenant : (i) de 60 % à 100 %, en poids total dudit système tensioactif, d'un alkylalcoxy-sulfate (AES) linéaire ou ramifié en C10 à C20 ayant un degré moyen d'alcoxylation allant de 0,1 à 5 ; (ii) de 0 % à 40 %, en poids total dudit système tensioactif, d'un sulfonate d'alkylbenzène (LAS) linéaire en C10 à C20 ; et (iii) de 0 % à 40 %, en poids total dudit système tensioactif, d'un alcool alkylique alcoxylé en C8 à C18 ayant un degré moyen d'alcoxylation allant de 1 à 20 (NI).
  9. Composition détergente pour le lavage du linge selon la revendication 1 dans laquelle la composition de lavage du linge comprend :
    (a) de 0,2 % en poids à 1 % en poids d'un polymère cationique, qui a une masse moléculaire moyenne en poids allant de 20 000 à 350 000 Daltons, ledit polymère cationique étant constitué essentiellement : (i) de 65 % molaires à 90 % molaires d'un premier motif structural non ionique fabriqué à partir de (méth)acrylamide (AAm) ; (ii) de 10 % molaires à 20 % molaires d'un deuxième motif structural cationique fabriqué à partir de chlorure de diallyl-diméthylammonium (DADMAC) ; et (iii) de 1 % molaire à 20 % molaires d'un troisième motif structural non ionique fabriqué à partir de vinylpyrrolidone (VP) ; et
    (b) de 1 % en poids à 99 % en poids d'un système tensioactif comprenant : (i) de 60 % à 100 %, en poids total dudit système tensioactif, d'un alkylalcoxy-sulfate (AES) linéaire ou ramifié en C10 à C20 ayant un degré moyen d'alcoxylation allant de 0,1 à 5 ; (ii) de 0 % à 40 %, en poids total dudit système tensioactif, d'un sulfonate d'alkylbenzène (LAS) linéaire en C10 à C20 ; et (iii) de 0 % à 40 %, en poids total dudit système tensioactif, d'un alcool alkylique alcoxylé en C8 à C18 ayant un degré moyen d'alcoxylation allant de 1 à 20 (NI).
  10. Composition détergente liquide pour le lavage du linge selon la revendication 8 ou 9, comprenant en outre de 0,1 % en poids à 1 % en poids d'un agent antimousse dérivé de silicone.
EP15767696.6A 2014-03-26 2015-03-25 Compositions de nettoyage contenant des polymères cationiques dans un système tensioactif enrichi en aes Active EP3122854B1 (fr)

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PCT/CN2014/074127 WO2015143645A1 (fr) 2014-03-26 2014-03-26 Compositions de nettoyage contenant des polymères cationiques, et leurs procédés de préparation et d'utilisation
PCT/CN2014/074122 WO2015143644A1 (fr) 2014-03-26 2014-03-26 Compositions de nettoyage contenant des polymères cationiques, et leurs procédés de fabrication et d'utilisation
PCT/CN2014/090775 WO2016074142A1 (fr) 2014-11-11 2014-11-11 Compositions détergentes ou nettoyantes ayant un profil moussant amélioré
PCT/CN2015/072994 WO2016127387A1 (fr) 2015-02-13 2015-02-13 Compositions de nettoyage contenant des tensioactifs de sulfate d'alkyle et un polymère cationique pour permettre l'amélioration holistique de profil moussant
PCT/CN2015/075008 WO2015144053A1 (fr) 2014-03-26 2015-03-25 Compositions de nettoyage contenant des polymères cationiques dans un système tensioactif enrichi en aes

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EP3122854A1 (fr) 2017-02-01
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CN106459842A (zh) 2017-02-22
CN106795461A (zh) 2017-05-31
CN106795461B (zh) 2020-11-24

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