EP4695367A1 - Liquid laundry detergent with synergistic low temperature detergency blend - Google Patents

Liquid laundry detergent with synergistic low temperature detergency blend

Info

Publication number
EP4695367A1
EP4695367A1 EP23932439.5A EP23932439A EP4695367A1 EP 4695367 A1 EP4695367 A1 EP 4695367A1 EP 23932439 A EP23932439 A EP 23932439A EP 4695367 A1 EP4695367 A1 EP 4695367A1
Authority
EP
European Patent Office
Prior art keywords
group
alkyl
sulfonates
laundry detergent
detergent formulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23932439.5A
Other languages
German (de)
French (fr)
Inventor
Yang Zhang
Cheng Shen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Global Technologies LLC
Original Assignee
Dow Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Global Technologies LLC filed Critical Dow Global Technologies LLC
Publication of EP4695367A1 publication Critical patent/EP4695367A1/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/123—Sulfonic acids or sulfuric acid esters; Salts thereof derived from carboxylic acids, e.g. sulfosuccinates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/143—Sulfonic acid 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
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146—Sulfuric acid 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
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/28—Sulfonation products derived from fatty acids or their derivatives, e.g. esters, amides
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • 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
    • C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/12—Soft surfaces, e.g. textile
    • 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
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/30—Amines; Substituted amines ; Quaternized amines

Definitions

  • the present invention relates to a liquid laundry detergent formulation for low temperature household use.
  • a liquid laundry detergent formulation comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of aikyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of
  • R 6 is a linear C 8-18 alkyl group; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and (c) a cleaning booster of Formula (II)
  • each R 1 is independently a chain of Formula (III)
  • each R 2 is independently selected from the group consisting of a C 1-8 alkyl group and a chain of Formula (III) ; wherein R 3 and R 4 are independently an aliphatic C 3-12 alkanediyl group; wherein each R 5 is independently selected from the group consisting of a hydrogen and a -C 1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ⁇ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11.
  • the present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polye
  • R 6 is a linear C 8-18 alkyl group; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and (c) a cleaning booster of Formula (II)
  • each R 1 is independently a chain of Formula (III)
  • each R 2 is independently selected from the group consisting of a C 1-8 alkyl group and a chain of Formula (III) ; wherein R 3 and R 4 are independently an aliphatic C 3-12 alkanediyl group; wherein each R 5 is independently selected from the group consisting of a hydrogen and a -C 1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ⁇ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11.
  • the present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polye
  • the present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polye
  • the present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polye
  • the present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefln sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol poly
  • the present invention also provides use of a liquid laundry detergent formulation comprising a synergistic low temperature detergency blend for cleaning fabrics under cold wash conditions; wherein the synergisting low temperature detergency blend comprises: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of
  • the present invention provides a method of washing a fabric article comprising: providing a soiled fabric article; providing a liquid laundry detergent formulation of the present invention; providing a wash water at a temperature of ⁇ 15 °C; and applying the wash water and the liquid laundry detergent formulation to the soiled fabric article to provide a cleaned fabric article.
  • aqueous liquid laundry detergents specifically formulated with a combination of a selection of anionic surfactants; a nonionic surfactant having formula (I) R 6 -O- (EO) x - (AO) y - (EO) z -H (I)
  • R 6 is a linear C 8-18 alkyl group (preferably, a linear C 10-18 alkyl group; more preferably, a linear C 12-14 alkyl group or a linear C 16-18 alkyl group) ; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms (preferably, 3 to 4 carbon atoms; more preferably, 3 carbon atoms) ; wherein x is 2 to 4 (preferably, 4) ; wherein y is 6 to 25 (preferably, 7 to 20; more preferably, 8 to 15; most preferably, 8 to 14) ; wherein z is 1 to 50 (preferably, 4 to 40; more preferably, 6 to 30; most preferably, 8 to 25) ; and a cleaning booster of Formula (II)
  • each R 1 is independently a chain of Formula (III)
  • each R 2 is independently selected from the group consisting of a C 1-8 alkyl group and a chain of Formula (III) ; wherein R 3 and R 4 are independently an aliphatic C 3-12 alkanediyl group; wherein each R 5 is independently selected from the group consisting of a hydrogen and a -C 1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ⁇ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11; exhibit exceptional detergency for cleaning water temperatures of ⁇ 15 °C (preferably, ⁇ 10 °C) .
  • ratios, percentages, parts, and the like are by weight.
  • molecular weight refers to the weight average molecular weight as measured in a conventional manner with gel permeation chromatography (GPC) and conventional standards, such as polystyrene molecular weight standards.
  • GPC gel permeation chromatography
  • conventional standards such as polystyrene molecular weight standards.
  • GPC techniques are discussed in detail in Modern Size-Exclusion Liquid Chromatography -Practice of Gel Permeation and Gel Filtration Chromatography, Second Edition, A.M. Striegel, W.W. Yau, J.J. Kirkland, D.D. Bly; John Wiley &Sons, Inc. 2009. Molecular weights are reported herein in units of Daltons, or equivalently, g/mol.
  • low temperature detergency stability means that the soil removal index (SRI), calculated using ASTM Method D4265-14, for a given laundry detergent formulation at a wash temperature of 10 °C is at least 95% (preferably, at least 97 %; more preferably, at least 98%; most preferably, at least 100%) of the soil removal index (SRI) , calculated using ASTM Method D4265-14, for the same laundry detergent formulation at a wash temperature of 30 °C.
  • the liquid laundry detergent formulation of the present invention comprises a synergistic low temperature detergency blend, comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol
  • R 6 is a linear C 8-18 alkyl group (preferably, a linear C 10-18 alkyl group; more preferably, a linear C 12-14 alkyl group or a linear C 16-18 alkyl group) ; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms (preferably, 3 to 4 carbon atoms; more preferably, 3 carbon atoms) ; wherein x is 2 to 4 (preferably, 4) ; wherein y is 6 to 25 (preferably, 7 to 20; more preferably, 8 to 15; most preferably, 8 to 14) ; wherein z is 1 to 50 (preferably, 4 to 40; more preferably, 6 to 30; most preferably, 8 to 25) ; and (c) a cleaning booster of Formula (II)
  • each R 1 is independently a chain of Formula (III)
  • each R 2 is independently selected from the group consisting of a C 1-8 alkyl group and a chain of Formula (III) (preferably, a C 1-4 alkyl group and a chain of formula (III) ; more preferably, a C 1-2 alkyl group and a chain of formula (III) ; most preferably, a methyl group) ; wherein R 3 and R 4 are independently an aliphatic C 3-12 alkanediyl group (preferably, an aliphatic C 3-8 alkanediyl group; more preferably, an aliphatic C 3-4 alkanediyl group; most preferably, a -CH 2 CH 2 CH 2 -group) (preferably, wherein R 3 and R 4 may be the same or different) (preferably, wherein the aliphatic C 3-12 alkanediyl groups can be linear or branched and can contain alicyclic groups) ; wherein each R 5 is independently selected from the group consisting of a hydrogen and a -C -
  • the cleaning booster of formula (II) used in the synergistic low temperature detergency blend, of the present invention contains 90 to 99.5 wt% (more preferably, 94 to 99 wt%; more preferably, 95 to 98.5 wt%) , based on weight of the cleaning booster, of alkoxide groups.
  • the cleaning booster of formula (II) used in the synergistic low temperature detergency blend, of the present invention contains 90 to 99.5 wt%(more preferably, 94 to 99 wt%; more preferably, 95 to 98.5 wt%) , based on weight of the cleaning booster, of alkoxide groups; wherein the alkoxide groups are selected from the group consisting of-CH 2 CH 2 O-groups, -CH 2 CH (CH 3 ) O-groups and a -CH 2 CH (CH 2 CH 3 ) O-groups.
  • the cleaning booster of formula (II) used in the synergistic low temperature detergency blend, of the present invention contains 90 to 99.5 wt% (more preferably, 94 to 99 wt%; more preferably, 95 to 98.5 wt%) , based on weight of the cleaning booster, of alkoxide groups; wherein the alkoxide groups are selected from the group consisting of -CH 2 CH 2 O-groups (i.e., wherein R 5 in Formula (III) is a hydrogen) and -CH 2 CH (CH 3 ) O-groups (i.e., wherein R 5 is a methyl group) .
  • the cleaning booster of formula (II) used in the synergistic low temperature detergency blend, of the present invention contains 90 to 99.5 wt% (more preferably, 94 to 99 wt%; more preferably, 95 to 98.5 wt%) , based on weight of the cleaning booster, of alkoxide groups; wherein the alkoxide groups are selected from the group consisting of -CH 2 CH 2 O-groups (i.e., wherein R 5 in Formula (III) is a hydrogen) and -CH 2 CH (CH 3 ) O-groups (i.e., wherein R 5 is a methyl group) ; wherein ⁇ 70 wt% (preferably, 10 to 65 wt%; more preferably, 25 to 60 wt%) of the alkoxide groups are -CH 2 CH (CH 3 ) O-groups.
  • the liquid laundry detergent formulation of the present invention further comprises a water miscible organic solvent. More preferably, the liquid laundry detergent formulation of the present invention, further comprises 0 to 40 wt% (preferably, 2 to 40 wt%(more preferably, 4 to 35 wt%; still more preferably, 5 to 30 wt%; most preferably, 5 to 25 wt%) ) , based on weight of the liquid laundry detergent formulation, of a water miscible organic solvent.
  • the liquid laundry detergent formulation of the present invention further comprises 0 to 40 wt% (preferably, 2 to 40 wt% (more preferably, 4 to 35 wt%; still more preferably, 5 to 30 wt%; most preferably, 5 to 25 wt%) ) , based on weight of the liquid laundry detergent formulation, of a water miscible organic solvent; wherein the water miscible organic solvent is selected from the group consisting of C 1-4 alcohol with one hydroxyl group (e.g., ethanol) ; propylene glycol; glycerol; 1, 3-butanediol; 1, 3-hexanediol; dipropylene glycol and mixtures thereof (preferably, ethanol, propylene glycol and mixtures thereof; more preferably, propylene glycol) .
  • the water miscible organic solvent is selected from the group consisting of C 1-4 alcohol with one hydroxyl group (e.g., ethanol) ; propylene glycol; glycerol; 1, 3-butan
  • the liquid laundry detergent formulation optionally further comprises an optional additive selected from the group consisting of builders (e.g., sodium bicarbonate, sodium carbonate, zeolites, sodium citrate, sodium tripolyphosphate and aminocarboxylates (such as methylglycine diacetic acid, sodium salt or glutamic acid diacetic acid, sodium salt) ) ; hydrotropes (e.g., sodium xylene sulfonate, sodium cumene sulfonate, sodium toluene sulfonate) ; foam control agents (e.g., polydimethylsiloxane) ; enzymes (e.g., protease, cellulases, lipase, amylase, mannanases) ; preservatives; fragrances (e.g., essential oils such as D-limonene) ; fluorescent whitening agents; bleach (e.g., sodium percarbonate, sodium perborate, sodium hypochlorit) e.
  • builders
  • a liquid laundry detergent formulation comprising a synergistic low temperature detergency blend for cleaning fabrics under cold wash conditions (preferably, at wash temperatures of ⁇ 15 °C; more preferably, at wash temperatures of ⁇ 10 °C);
  • the synergisting low temperature detergency blend of the present invention comprises: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl
  • R 6 is a linear C 8-18 alkyl group (preferably, a linear C 10-18 alkyl group; more preferably, a linear C 12-14 alkyl group or a linear C 16-18 alkyl group) ; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms (preferably, 3 to 4 carbon atoms; more preferably, 3 carbon atoms) ; wherein x is 2 to 4 (preferably, 4) ; wherein y is 6 to 25 (preferably, 7 to 20; more preferably, 8 to 15; most preferably, 8 to 14) ; wherein z is 1 to 50 (preferably, 4 to 40; more preferably, 6 to 30; most preferably, 8 to 25) ; and (c) a cleaning booster of Formula (II)
  • each R 1 is independently a chain of Formula (III)
  • each R 2 is independently selected from the group consisting of a C 1-8 alkyl group and a chain of Formula (III) (preferably, a C 1-4 aikyl group and a chain of formula (III) ; more preferably, a C 1-2 alkyl group and a chain of formula (III) ; most preferably, a methyl group) ; wherein R 3 and R 4 are independently an aliphatic C 3-12 alkanediyl group (preferably, an aliphatic C 3-8 alkanediyl group; more preferably, an aliphatic C 3-4 alkanediyl group; most preferably, a -CH 2 CH 2 CH 2 - group) (preferably, wherein R 3 and R 4 may be the same or different) (preferably, wherein the aliphatic C 3-12 alkanediyl groups can be linear or branched and can contain alicyclic groups) ; wherein each R 5 is independently selected from the group consisting of a hydrogen and a -
  • the method of washing a fabric article of the present invention comprises: providing a soiled fabric article (preferably, wherein the soiled fabric article is soiled with oil and grease borne soil; more preferably, wherein the soiled fabric article is soiled with sebum oils) (preferably, wherein the soiled fabric article is stained cotton fabric; more preferably, wherein the soiled fabric article is stained polycotton fabric) ; providing a liquid laudry detergent formulation of the present invention comprising a synergistic low temperature detergency blend; providing a wash water at a temperature of ⁇ 15 °C (preferably, ⁇ 10 °C) ; and applying the wash water and the liquid laundry detergent formulation to the soiled fabric article to provide a cleaned fabric article.
  • the method of washing a fabric article of the present invention comprises: providing a soiled fabric article (preferably, wherein the soiled fabric article is soiled with oil and grease borne soil; more preferably, wherein the soiled fabric article is soiled with sebum oils) (preferably, wherein the soiled fabric article is stained cotton fabric; more preferably, wherein the soiled fabric article is stained polycotton fabric) ; providing a liquid laudry detergent formulation of the present invention comprising a synergistic low temperature detergency blend; providing a wash water at a temperature of ⁇ 15 °C (preferably, ⁇ 10 °C) ; providing a rinse water; applying the wash water and the liquid laundry detergent formulation to the soiled fabric to provide a cleaned fabric article; and then applying the rinse water to the cleaned fabric article to remove the formulated laundry detergent formulation from the cleaned fabric article.
  • a soiled fabric article preferably, wherein the soiled fabric article is soiled with oil and grease borne soil; more preferably, wherein
  • a nonionic surfactant represented by the formula L-C 12-14 - (EO) 4 - (PO) 8 - (EO) 12 was prepared, wherein “L-C 12-14 ” is a linear C 12-14 alkyl moiety.
  • L-C 12-14 alcohol and a 45-50 wt%aqueous solution of potassium hydroxide were charged to a reactor.
  • the potassium hydroxide charge was sufficient to provide a KOH concentration of 0.17 wt%, based on weight of the polymer porduct.
  • the contents of the reactor were maintained at 50 to 60 °C for thirty minutes.
  • the moisture content in the vapor space of the reactor was then reduced to less than 1,000 ppm by vacuum stripping at 80 °C.
  • the temperature set point for the reactor contents was then raised to 110 °C.
  • EO ethylene oxide
  • PO propylene oxide
  • a cleaning booster was prepared using a pressure reactor.
  • Propylene oxide (PO) and ethylene oxide (EO) were separately delivered using ISCO syringe pumps equipped with a robotically controlled needle and compressed gas micro valve.
  • the pressure reactor was outfitted with a glass insert and a removable stir paddle. The reactor was initially dried in a vacuum oven at 125 °C.
  • Bis (3-aminopropyl) methylamine (14.5 g) and propylene oxide (17 g) were mixed in an autoclage and stirred at 140 °C for 8 hours.
  • the obtained material was mixed with aqueous KOH (4 g, 45 wt%KOH) with subsequent water removal.
  • This mixture was propoxylated with propylene oxide (27.7 g) at 115 °C for 24 hours to form an intermediate with the approximate composition (diamine) (PO) 8 .
  • the obtained intermediate (diamine) (PO) 8 containing about 3 wt%KOH (0.567 mL) was charged to the reactor under nitrogen.
  • the reactor was then sealed and charged with propylene oxide (1.496 mL) .
  • the temperature was increased to 115 °C and the reaction mixture was stirred for 24 hours after reaching the process temperature.
  • the reactor pressure were observed to decrease and gradually level off by the end of the heating period indicating that the reaction was completed.
  • the reactor was cooled, vented, and purged with nitrogen.
  • the reactor was heated to 130 °C and ethylene oxide (1.684 mL) was added to the reactor contents.
  • the reactor contents were stirred at 130 °C for 4 hours.
  • a pressure curve showed the reaction completion.
  • the synthesis produced a sample having a 33.7/32.7 mol/mol PO/EO ratio. After cooling, venting and purging the reactor with nitrogen, a small sample was taken from the reactor for NMR and GPC analysis, with results in TABLE 2.
  • the concentrated laundry detergent formulations of Comparative Examples CF1-CF8 and Examples F1-F4 used in the cleaning tests in subsequent Examples were prepared having the generic formulation as described in TABLE 3.
  • the water and propylene glycol were mixed in a beaker with mechanical stirring.
  • the dodecylbenzene sulfonic acid, sodium laureth-2 sulfate, oleic acid and potassium hydroxide were then added in the beaker with continued stirring.
  • the nonionic surfactant (Synthesis S1-S6 or XL-80) was then added to the beaker with continued stirring.
  • the pH was then adjusted to 8 to 8.5 with potassium hydroxide to form the concentrated laundry detergent.
  • the unit dose laundry detergent formulations of Comparative Examples CF19-CF27 and Examples F11-F15 used in the cleaning tests in subsequent Examples were prepared having the formulation as described in TABLE 5.
  • the water and propylene glycol were mixed in a beaker with mechanical stirring.
  • the dodecylbenzene sulfonic acid, ammonium laureth-2 sulfate, oleic acid and monoethanol amine were then added in the beaker with continued stirring.
  • the nonionic surfactant (Synthesis S1-S6 or XL-80) was then added to the beaker with continued stirring.
  • the pH was then adjusted to 7.5 with monoethanol amine to form the concentrated laundry detergent.
  • SR (%) is the calulated soil removal in %; wherein L* A is the L*value for a dry fabric swatch measured by spectrophotometer (Konica Minolta Spectrophotometer CM-3600A) after washing; and wherein L * B is the L*value for a dry fabric swatch measured by spectrophotometer before washing.

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Abstract

A liquid laundry detergent formulation is provided, comprising a synergistic low temperature detergency blend comprising: (a) anionic surfactant; (b) nonionic surfactant selected from the group of nonionic surfactants having formula (I) R6-O- (EO) x- (AO) y- (EO) z-H (I) wherein R6 is linear C8-18 alkyl group; wherein AO is oxyalkylene group with 3-5 carbon atoms; wherein x is 2-4; wherein y is 6-25; wherein z is 1-50; and (c) cleaning booster of Formula (II), wherein each R1 is chain of Formula (III), wherein each R2 is independently selected from C1-8 alkyl group and chain of Formula (III); wherein R3 and R4 are aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from hydrogen and -C1-4 alkyl group; wherein n is 0-8; wherein m is 5-50; and wherein the cleaning booster has weight average molecular weight of ≤ 10,000 Daltons; and wherein the liquid laundry detergent formulation has pH of 6.5-11.

Description

    LIQUID LAUNDRY DETERGENT WITH SYNERGISTIC LOW TEMPERATURE DETERGENCY BLEND
  • The present invention relates to a liquid laundry detergent formulation for low temperature household use. In particular, the present invention relates to a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of aikyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-aikane-1 -sulfonic acids, 2-acryloxy-alkane-1 -sulfonates, beta-alkyloxy alkane sulfonic acids, beta-aikyloxy alkane sulfonates, oleic acid and mixtures thereof; (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I)
    R6-O- (EO) x- (AO) y- (EO) z-H    (I)
  • wherein R6 is a linear C8-18 alkyl group; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and (c) a cleaning booster of Formula (II)
  • wherein each R1 is independently a chain of Formula (III)
  • wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50;  and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11.
  • The efficiency of fabric cleaning is dependent on the wash liquid temperature. Lowering of the wash liquid temperature usually leads to poorer soil removal. However, cleaning fabric articles under low temperature conditions is inevitable during the winter months in many geographic regions. That is, many consumers do not have a hot water supply in their houses and municipal water supplies can sometimes be at temperatures of 10 ℃ when fed into washing machines. In addition, consumers are increasingly choosing to do laundry without heating to reduce energy consumption and carbon emissions. Notwithstanding the temperature of the wash water, consumers expect their laundry detergent to perform consistently.
  • Accordingly, there is a continuing need for laundry detergent formulations that exhibit effective detergency for cleaning water temperatures at ≤ 15 ℃ (preferably, ≤ 10 ℃) .
  • The present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid and mixtures thereof; (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I)
    R6-O- (EO) x- (AO) y- (EO) z-H     (I)
  • wherein R6 is a linear C8-18 alkyl group; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and (c) a cleaning booster of Formula (II)
  • wherein each R1 is independently a chain of Formula (III)
  • wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11.
  • The present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid and mixtures thereof; (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I) ; wherein R6 is a linear C8-18 alkyl group; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and (c) a cleaning booster of Formula (II) ; wherein each R1 is independently a chain of Formula (III) ; wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of≤ 10,000 Daltons; wherein the liquid laundry detergent formulation has a pH of 6.5 to 11; and wherein the liquid laudry detergent formulation further comprises water.
  • The present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-aikane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid and mixtures thereof; (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I) ; wherein R6 is a linear C8-18 alkyl group; wherein AO is an oxyalkylene group with 3 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and (c) a cleaning booster of Formula (II) ; wherein each R1 is independently a chain of Formula (III) ; wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphafic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; wherein the liquid laundry detergent formulation has a pH of 6.5 to 11; wherein the liquid laudry detergent formulation further comprises water; and wherein the liquid laundry detergent formulation comprises 5 to 95 wt%, based on weight of the liquid laundry detergent formulation, of the anionic surfactant (a) plus the nonionic surfactant (b) .
  • The present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid and mixtures thereof; (b) a nonionic surfactant selected from the group  of nonionic surfactants having formula (I) ; wherein R6 is a linear C8-18 alkyl group; wherein AO is an oxyalkylene group with 3 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and (c) a cleaning booster of Formula (II) ; wherein each R1 is independently a chain of Formula (III) ; wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; wherein the liquid laundry detergent formulation has a pH of 6.5 to 11; wherein the liquid laudry detergent formulation further comprises water; wherein the liquid laundry detergent formulation comprises 5 to 95 wt%, based on weight of the liquid laundry detergent formulation, of the anionic surfactant (a) plus the nonionic surfactant (b) ; and wherein the nonionic surfactant comprises 15 to 60 wt%of the combined weight of the anionic surfactant (a) and the nonionic surfactant (b) .
  • The present invention provides a liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefln sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid and mixtures thereof; (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I) ; wherein R6 is a linear C8-18 alkyl group; wherein AO is an oxyalkylene group with 3 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and (c) a cleaning booster of Formula (II) ; wherein each R1 is independently a chain of Formula (III) ; wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; wherein the liquid laundry detergent  formulation has a pH of 6.5 to 11; wherein the liquid laudry detergent formulation further comprises water; wherein the liquid laundry detergent formulation comprises 5 to 95 wt%, based on weight of the liquid laundry detergent formulation, of the anionic surfactant (a) plus the nonionic surfactant (b) ; wherein the nonionic surfactant comprises 15 to 60 wt%of the combined weight of the anionic surfactant (a) and the nonionic surfactant (b) ; and wherein the liquid laundry detergent formulation further comprises a water miscible organic solvent.
  • The present invention also provides use of a liquid laundry detergent formulation comprising a synergistic low temperature detergency blend for cleaning fabrics under cold wash conditions; wherein the synergisting low temperature detergency blend comprises: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfouic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid and mixtures thereof; (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I) ; wherein R6 is a linear C8-18 alkyl group; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and wherein the nonionic surfactant is selected based on its ability to impart detergency stability to the laundry detergent formulation for cleaning water temperatures ranging from 10 to 30 ℃; and (c) a cleaning booster of Formula (II) ; wherein each R1 is independently a chain of Formula (III) ; wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11.
  • The present invention provides a method of washing a fabric article comprising: providing a soiled fabric article; providing a liquid laundry detergent formulation of the present invention; providing a wash water at a temperature of≤ 15 ℃; and applying the wash  water and the liquid laundry detergent formulation to the soiled fabric article to provide a cleaned fabric article.
    • DETAILED DESCRIPTION
  • It has been surprisingly found that aqueous liquid laundry detergents specifically formulated with a combination of a selection of anionic surfactants; a nonionic surfactant having formula (I)
    R6-O- (EO) x- (AO) y- (EO) z-H    (I)
  • wherein R6 is a linear C8-18 alkyl group (preferably, a linear C10-18 alkyl group; more preferably, a linear C12-14 alkyl group or a linear C16-18 alkyl group) ; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms (preferably, 3 to 4 carbon atoms; more preferably, 3 carbon atoms) ; wherein x is 2 to 4 (preferably, 4) ; wherein y is 6 to 25 (preferably, 7 to 20; more preferably, 8 to 15; most preferably, 8 to 14) ; wherein z is 1 to 50 (preferably, 4 to 40; more preferably, 6 to 30; most preferably, 8 to 25) ; and a cleaning booster of Formula (II)
  • wherein each R1 is independently a chain of Formula (III)
  • wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11; exhibit exceptional detergency for cleaning water temperatures of ≤ 15 ℃ (preferably, ≤ 10 ℃) .
  • Unless otherwise indicated, ratios, percentages, parts, and the like are by weight.
  • As used herein, unless otherwise indicated, the phrase "molecular weight" or Mw refers to the weight average molecular weight as measured in a conventional manner with gel permeation chromatography (GPC) and conventional standards, such as polystyrene molecular weight standards. GPC techniques are discussed in detail in Modern Size-Exclusion Liquid Chromatography -Practice of Gel Permeation and Gel Filtration Chromatography, Second Edition, A.M. Striegel, W.W. Yau, J.J. Kirkland, D.D. Bly; John Wiley &Sons, Inc. 2009. Molecular weights are reported herein in units of Daltons, or equivalently, g/mol.
  • The term “low temperature detergency stability” as used herein and in the appended claims means that the soil removal index (SRI), calculated using ASTM Method D4265-14, for a given laundry detergent formulation at a wash temperature of 10 ℃ is at least 95% (preferably, at least 97 %; more preferably, at least 98%; most preferably, at least 100%) of the soil removal index (SRI) , calculated using ASTM Method D4265-14, for the same laundry detergent formulation at a wash temperature of 30 ℃.
  • Preferably, the liquid laundry detergent formulation of the present invention, comprises a synergistic low temperature detergency blend, comprising: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid, salts thereof and mixtures thereof (preferably, wherein the anionic surfactant is selected from the group consisting of C8-20 alkyl benzene sulfates, C8-20 alkyl benzene sulfonic acids, C8-20 alkyl benzene sulfonates, C8-20 alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, alpha-olefin sulfonic acids, alpha-olefin sulfonates, sulfonates of fatty acids, sulfonates of fatty acid esters, oleic acid and mixtures thereof; more preferably, wherein the anionic surfactant is selected from the group consisting of C12-16 alkyl benzene sulfonic acids, C12-16 alkyl benzene sulfonates, C12-16 alkyl polyethoxy sulfates, C12-18 paraffin-sulfonic acids, C12-18 paraffin-sulfonates, oleic acid and mixtures thereof; still more preferably, wherein the anionic surfactant is selected from the group consisting of C12-16 alkyl benzene sulfonic acids, C12-16 alkyl benzene sulfonates, C12-16 alkyl  polyethoxy sulfates, oleic acid and mixtures thereof; yet more preferably, wherein the anionic surfactant includes a mixture of dodecyl benzene sulfonic acid, sodium laureth-2 sulfate and oleic acid; most preferably, wherein the anionic surfactant is a mixture of dodecyl benzene sulfonic acid, sodium laureth-2 sulfate and oleic acid) ; (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I)
    R6-O- (EO) x- (AO) y- (EO) z-H    (I)
  • wherein R6 is a linear C8-18 alkyl group (preferably, a linear C10-18 alkyl group; more preferably, a linear C12-14 alkyl group or a linear C16-18 alkyl group) ; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms (preferably, 3 to 4 carbon atoms; more preferably, 3 carbon atoms) ; wherein x is 2 to 4 (preferably, 4) ; wherein y is 6 to 25 (preferably, 7 to 20; more preferably, 8 to 15; most preferably, 8 to 14) ; wherein z is 1 to 50 (preferably, 4 to 40; more preferably, 6 to 30; most preferably, 8 to 25) ; and (c) a cleaning booster of Formula (II)
  • wherein each R1 is independently a chain of Formula (III)
  • wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) (preferably, a C1-4 alkyl group and a chain of formula (III) ; more preferably, a C1-2 alkyl group and a chain of formula (III) ; most preferably, a methyl group) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group (preferably, an aliphatic C3-8 alkanediyl group; more preferably, an aliphatic C3-4 alkanediyl group; most preferably, a -CH2CH2CH2-group) (preferably, wherein R3 and R4 may be the same or different) (preferably, wherein the aliphatic C3-12 alkanediyl groups can be linear or branched and can contain alicyclic groups) ; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group (preferably, a hydrogen and a -C1-3 alkyl group; more preferably, a hydrogen and a -C1-2 alkyl group; most preferably, a hydrogen and  a methyl group) (preferably, wherein the R5 moieties vary across the molecule with the different R5 moieties being randomly dispersed across the molecule or distributed in blocks along the molecule) ; wherein n is an average of 0 to 8 (preferably, 1 to 8; more preferably, 1 to 4; still more preferably, 1 to 2; most preferably, 1) ; and wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons (preferably, 1,139 to 10,000 Daltons; more preferably; 1,750 to 5,000 Daltons; most preferably, 2,000 to 4,000 Daltons) ; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11 (preferably, 7.5 to 10) (preferably, wherein the liquid laundry detergent formulation further comprises water) (preferably, wherein the formulated laundry detergent formulation comprises 5 to 95 wt% (preferably, 10 to 80 wt%; more preferably, 15 to 75 wt%; still more preferably, 17 to 65 wt%; yet more preferably, 50 to 65 wt%; most preferably, 55 to 60 wt%) , based on weight of the liquid laundry detergent formulation, of the anionic surfactant (a) plus the nonionic suffactant (b) ) (preferably, wherein the liquid laundry detergent formulation comprises 15 to 60 wt% (preferably, 20 to 60 wt%; more preferably, 25 to 50 wt%; most preferably, 25 to 45 wt%) , based on the combined weight of the anionic surfactant (a) and the nonionic surfactant (b) , of the nonionic surfactant (b) ) .
  • Preferably, the cleaning booster of formula (II) used in the synergistic low temperature detergency blend, of the present invention, contains 90 to 99.5 wt% (more preferably, 94 to 99 wt%; more preferably, 95 to 98.5 wt%) , based on weight of the cleaning booster, of alkoxide groups. More preferably, the cleaning booster of formula (II) used in the synergistic low temperature detergency blend, of the present invention, contains 90 to 99.5 wt%(more preferably, 94 to 99 wt%; more preferably, 95 to 98.5 wt%) , based on weight of the cleaning booster, of alkoxide groups; wherein the alkoxide groups are selected from the group consisting of-CH2CH2O-groups, -CH2CH (CH3) O-groups and a -CH2CH (CH2CH3) O-groups. Yet more preferably, the cleaning booster of formula (II) used in the synergistic low temperature detergency blend, of the present invention, contains 90 to 99.5 wt% (more preferably, 94 to 99 wt%; more preferably, 95 to 98.5 wt%) , based on weight of the cleaning booster, of alkoxide groups; wherein the alkoxide groups are selected from the group consisting of -CH2CH2O-groups (i.e., wherein R5 in Formula (III) is a hydrogen) and -CH2CH (CH3) O-groups (i.e., wherein R5 is a methyl group) . Most preferably, the cleaning booster of formula (II) used in the synergistic low temperature detergency blend, of the present invention, contains 90 to 99.5 wt% (more preferably, 94 to 99 wt%; more preferably, 95 to 98.5 wt%) , based on weight of the cleaning booster, of  alkoxide groups; wherein the alkoxide groups are selected from the group consisting of -CH2CH2O-groups (i.e., wherein R5 in Formula (III) is a hydrogen) and -CH2CH (CH3) O-groups (i.e., wherein R5 is a methyl group) ; wherein ≤ 70 wt% (preferably, 10 to 65 wt%; more preferably, 25 to 60 wt%) of the alkoxide groups are -CH2CH (CH3) O-groups. Preferably, the molar ratio of -CH2CH2O-groups to -CH2CH (CH3) O-groups in the cleaning booster is ＞ 0.9: 1.
  • Preferably, the liquid laundry detergent formulation of the present invention, further comprises a water miscible organic solvent. More preferably, the liquid laundry detergent formulation of the present invention, further comprises 0 to 40 wt% (preferably, 2 to 40 wt%(more preferably, 4 to 35 wt%; still more preferably, 5 to 30 wt%; most preferably, 5 to 25 wt%) ) , based on weight of the liquid laundry detergent formulation, of a water miscible organic solvent. Most preferably, the liquid laundry detergent formulation of the present invention, further comprises 0 to 40 wt% (preferably, 2 to 40 wt% (more preferably, 4 to 35 wt%; still more preferably, 5 to 30 wt%; most preferably, 5 to 25 wt%) ) , based on weight of the liquid laundry detergent formulation, of a water miscible organic solvent; wherein the water miscible organic solvent is selected from the group consisting of C1-4 alcohol with one hydroxyl group (e.g., ethanol) ; propylene glycol; glycerol; 1, 3-butanediol; 1, 3-hexanediol; dipropylene glycol and mixtures thereof (preferably, ethanol, propylene glycol and mixtures thereof; more preferably, propylene glycol) .
  • Preferably, the liquid laundry detergent formulation, of the present, optionally further comprises an optional additive selected from the group consisting of builders (e.g., sodium bicarbonate, sodium carbonate, zeolites, sodium citrate, sodium tripolyphosphate and aminocarboxylates (such as methylglycine diacetic acid, sodium salt or glutamic acid diacetic acid, sodium salt) ) ; hydrotropes (e.g., sodium xylene sulfonate, sodium cumene sulfonate, sodium toluene sulfonate) ; foam control agents (e.g., polydimethylsiloxane) ; enzymes (e.g., protease, cellulases, lipase, amylase, mannanases) ; preservatives; fragrances (e.g., essential oils such as D-limonene) ; fluorescent whitening agents; bleach (e.g., sodium percarbonate, sodium perborate, sodium hypochlorite) ; dyes; additive polymers (e.g., dispersant polymers such as acrylic acid homopolymers and copolymers of acrylic acid with maleic acid, sulfonated monomer and/or ethyl acrylate) ; frabric softeners (e.g., softening silicones, cationic coacervating polymers (e.g., cationic hydroxyalkyl cellulose, polyquaternium polymers) ) ; pH adjusters/buffers and mixtures thereof.
  • Preferably, the use of a liquid laundry detergent formulation comprising a synergistic low temperature detergency blend for cleaning fabrics under cold wash conditions (preferably, at wash temperatures of ≤ 15 ℃; more preferably, at wash temperatures of ≤ 10 ℃);wherein the synergisting low temperature detergency blend of the present invention comprises: (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid, salts thereof and mixtures thereof (preferably, wherein the anionic surfactant is selected from the group consisting of C8-20 alkyl benzene sulfates, C8-20 alkyl benzene sulfonic acids, C8-20 alkyl benzene sulfonates, C8-20 alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, alpha-olefin sulfonic acids, alpha-olefin sulfonates, sulfonates of fatty acids, sulfonates of fatty acid esters, oleic acid and mixtures thereof; more preferably, wherein the anionic surfactant is selected from the group consisting of C12-16 alkyl benzene sulfonic acids, C12-16 alkyl benzene sulfonates, C12-16 alkyl polyethoxy sulfates, C12-18 paraffin-sulfonic acids, C12-18 paraffin-sulfonates, oleic acid and mixtures thereof; still more preferably, wherein the anionic surfactant is selected from the group consisting of C12-16 alkyl benzene sulfonic acids, C12-16 alkyl benzene sulfonates, C12-16 alkyl polyethoxy sulfates, oleic acid and mixtures thereof; yet more preferably, wherein the anionic surfactant includes a mixture of dodecyl benzene sulfonic acid, sodium laureth-2 sulfate and oleic acid; most preferably, wherein the anionic surfactant is a mixture of dodecyl benzene sulfonic acid, sodium laureth-2 sulfate and oleic acid) ; (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I)
    R6-O- (EO) x- (AO) y- (EO) z-H    (I)
  • wherein R6 is a linear C8-18 alkyl group (preferably, a linear C10-18 alkyl group; more preferably, a linear C12-14 alkyl group or a linear C16-18 alkyl group) ; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms (preferably, 3 to 4 carbon atoms; more preferably, 3 carbon atoms) ; wherein x is 2 to 4 (preferably, 4) ; wherein y is 6 to 25 (preferably, 7 to 20; more preferably, 8 to 15; most preferably, 8 to 14) ; wherein z is 1 to 50  (preferably, 4 to 40; more preferably, 6 to 30; most preferably, 8 to 25) ; and (c) a cleaning booster of Formula (II)
  • wherein each R1 is independently a chain of Formula (III)
  • wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) (preferably, a C1-4 aikyl group and a chain of formula (III) ; more preferably, a C1-2 alkyl group and a chain of formula (III) ; most preferably, a methyl group) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group (preferably, an aliphatic C3-8 alkanediyl group; more preferably, an aliphatic C3-4 alkanediyl group; most preferably, a -CH2CH2CH2- group) (preferably, wherein R3 and R4 may be the same or different) (preferably, wherein the aliphatic C3-12 alkanediyl groups can be linear or branched and can contain alicyclic groups) ; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group (preferably, a hydrogen and a -C1-3 alkyl group; more preferably, a hydrogen and a -C1-2 alkyl group; most preferably, a hydrogen and a methyl group) (preferably, wherein the R5 moieties vary across the molecule with the different R5 moieties being randomly dispersed across the molecule or distributed in blocks along the molecule) ; wherein n is an average of 0 to 8 (preferably, 1 to 8; more preferably, 1 to 4; still more preferably, 1 to 2; most preferably, 1) ; and wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daitons (preferably, 1,139 to 10,000 Daltons; more preferably; 1,750 to 5,000 Daltons; most preferably, 2,000 to 4,000 Daltons) ; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11 (preferably, 7.5 to 10) (preferably, wherein the liquid laundry detergent formulation further comprises water) (preferably, wherein the formulated laundry detergent formulation comprises 5 to 95 wt% (preferably, 10 to 80 wt%; still more preferably, 17 to 65 wt%; yet more preferably, 50 to 65 wt%; most preferably, 55 to 60 wt%) , based on weight of  the liquid laundry detergent formulation, of the anionic surfactant (a) plus the nonionic surfactant (b) ) (preferably, wherein the liquid laundry detergent formulation comprises 15 to 60 wt% (preferably, 20 to 60 wt%; more preferably, 25 to 50 wt%; most preferably, 25 to 45 wt%) , based on the combined weight of the anionic surfactant (a) and the nonionic surfactant (b) , of the nonionic surfactant (b) ) .
  • Preferably, the method of washing a fabric article of the present invention, comprises: providing a soiled fabric article (preferably, wherein the soiled fabric article is soiled with oil and grease borne soil; more preferably, wherein the soiled fabric article is soiled with sebum oils) (preferably, wherein the soiled fabric article is stained cotton fabric; more preferably, wherein the soiled fabric article is stained polycotton fabric) ; providing a liquid laudry detergent formulation of the present invention comprising a synergistic low temperature detergency blend; providing a wash water at a temperature of ≤ 15 ℃ (preferably, ≤ 10 ℃) ; and applying the wash water and the liquid laundry detergent formulation to the soiled fabric article to provide a cleaned fabric article. More preferably, the method of washing a fabric article of the present invention, comprises: providing a soiled fabric article (preferably, wherein the soiled fabric article is soiled with oil and grease borne soil; more preferably, wherein the soiled fabric article is soiled with sebum oils) (preferably, wherein the soiled fabric article is stained cotton fabric; more preferably, wherein the soiled fabric article is stained polycotton fabric) ; providing a liquid laudry detergent formulation of the present invention comprising a synergistic low temperature detergency blend; providing a wash water at a temperature of ≤ 15 ℃ (preferably, ≤ 10 ℃) ; providing a rinse water; applying the wash water and the liquid laundry detergent formulation to the soiled fabric to provide a cleaned fabric article; and then applying the rinse water to the cleaned fabric article to remove the formulated laundry detergent formulation from the cleaned fabric article.
  • Some embodiments of the present invention will now be described in detail in the following Examples.
  • Synthesis S1: L-C12-14- (EO) 4- (PO) 8- (EO) 12
  • A nonionic surfactant represented by the formula L-C12-14- (EO) 4- (PO) 8- (EO) 12 was prepared, wherein “L-C12-14” is a linear C12-14 alkyl moiety. One mole of L-C12-14 alcohol and a 45-50 wt%aqueous solution of potassium hydroxide were charged to a reactor. The potassium hydroxide charge was sufficient to provide a KOH concentration of 0.17 wt%, based on weight of the polymer porduct. The contents of the reactor were maintained at 50 to 60 ℃ for thirty minutes. The moisture content in the vapor space of the reactor was then  reduced to less than 1,000 ppm by vacuum stripping at 80 ℃. The temperature set point for the reactor contents was then raised to 110 ℃. Then four molar equivalents of ethylene oxide, EO, based on the initial charge of L-C12-14 alcohol, was fed to the reactor slowly while the temperature of the reactor contents was maintained at 110 to 140 ℃. When the pressure in the reactor returned to approximately the same as the pressure prior to feeding the EO, eight molar equivalents of propylene oxide, PO, based on the initial charge of L-C12-14 alcohol, was fed to the reactor slowly while the temperature of the reactor contents was maintained at 110 to 140 ℃. When the pressure in the reactor returned to approximately the same as the pressure prior to feeding the PO, twelve molar equivalents of EO, based on the initial charge of L-C12-14 alcohol, was fed to the reactor slowly while the temperature of the reactor contents was maintained at 110 to 140 ℃. When the pressure in the reactor returned to approximately the same pressure as before feeding the EO, the reactor contents were maintained at 110 to 140 ℃ for two more hours to facilitate full reaction of the EO. The reactor was then purged with nitrogen and the reactor contents were cooled down to 60 ℃. Then acetic acid was added to the reactor contents to neutralize the potassium hydroxide. After the reactor contents cooled down to 40 ℃ the product polymer was recovered.
  • Syntheses S2-S9
  • The procedure described in Synthesis S1 was repreated in Syntheses S2-S9 wherein the alcohol used had an alkyl group as noted in TABLE 1 and the relative molar amounts of EO and PO added in the various steps as noted in TABLE 1.

  • Synthesis S10: Cleaning Booster
  • A cleaning booster was prepared using a pressure reactor. Propylene oxide (PO) and ethylene oxide (EO) were separately delivered using ISCO syringe pumps equipped with a robotically controlled needle and compressed gas micro valve. The pressure reactor was outfitted with a glass insert and a removable stir paddle. The reactor was initially dried in a vacuum oven at 125 ℃.
  • Bis (3-aminopropyl) methylamine (14.5 g) and propylene oxide (17 g) were mixed in an autoclage and stirred at 140 ℃ for 8 hours. The obtained material was mixed with aqueous KOH (4 g, 45 wt%KOH) with subsequent water removal. This mixture was propoxylated with propylene oxide (27.7 g) at 115 ℃ for 24 hours to form an intermediate with the approximate composition (diamine) (PO) 8.
  • The obtained intermediate (diamine) (PO) 8 containing about 3 wt%KOH (0.567 mL) was charged to the reactor under nitrogen. The reactor was then sealed and charged with propylene oxide (1.496 mL) . The temperature was increased to 115 ℃ and the reaction mixture was stirred for 24 hours after reaching the process temperature. The reactor pressure were observed to decrease and gradually level off by the end of the heating period indicating that the reaction was completed. The reactor was cooled, vented, and purged with nitrogen. Then the reactor was heated to 130 ℃ and ethylene oxide (1.684 mL) was added to the reactor contents. The reactor contents were stirred at 130 ℃ for 4 hours. A pressure curve showed the reaction completion. The synthesis produced a sample having a 33.7/32.7 mol/mol PO/EO ratio. After cooling, venting and purging the reactor with nitrogen, a small sample was taken from the reactor for NMR and GPC analysis, with results in TABLE 2.

  • Comparative Examples CF1-CF8 and Examples F1-F4: Concentrated Detergent
  • The concentrated laundry detergent formulations of Comparative Examples CF1-CF8 and Examples F1-F4 used in the cleaning tests in subsequent Examples were prepared having the generic formulation as described in TABLE 3. The water and propylene glycol were mixed in a beaker with mechanical stirring. The dodecylbenzene sulfonic acid, sodium laureth-2 sulfate, oleic acid and potassium hydroxide were then added in the beaker with continued stirring. The nonionic surfactant (Synthesis S1-S6 orXL-80) was  then added to the beaker with continued stirring. The pH was then adjusted to 8 to 8.5 with potassium hydroxide to form the concentrated laundry detergent.
  • Comparative Examples CF9-CF18 and Examples F5-F10: Standard Laundry Detergent
  • The standard laundry detergent formulations of Comparative Examples CF9-CF8 and Examples F5-F10 used in the cleaning tests in subsequent Examples were prepared having the formulation as described in TABLE 4. The water, dodecylbenzene sulfonic acid, sodium laureth-2 sulfate, oleic acid and sodium hydroxide were then added in the beaker with continued stirring. The nonionic surfactant (Synthesis S1, S3-S9 orXL-80) and cleaning booster, if any, was then added to the beaker with continued stirring. The pH was then adjusted to 8 to 8.5 with potassium hydroxide to form the standard laundry detergent.
  • Comparative Examples CF19-CF27 and Examples F11-F15: Unit Dose Detergent
  • The unit dose laundry detergent formulations of Comparative Examples CF19-CF27 and Examples F11-F15 used in the cleaning tests in subsequent Examples were prepared having the formulation as described in TABLE 5. The water and propylene glycol were mixed in a beaker with mechanical stirring. The dodecylbenzene sulfonic acid, ammonium laureth-2 sulfate, oleic acid and monoethanol amine were then added in the beaker with continued stirring. The nonionic surfactant (Synthesis S1-S6 orXL-80) was then added to the beaker with continued stirring. The pH was then adjusted to 7.5 with monoethanol amine to form the concentrated laundry detergent.
  • Low Temperature Detergency
  • The low temperature detergency, LTD, of the laundry detergent formulations of Comparative Examples CF1-CF27 and Examples F1-F15 was assessed in a Terg-o-tometer Model TOM-52-A available from SR Lab Instruments (6 x 1 L wells) agitated at 120 cycles per minute with the conditions noted below.
  • The soil removal (in %) was calculated for each of the laundry detergent formulations of Comparative Examples CF1-CF27 and Examples F1-F15 using the following formula:
    SR(%) = [ (L*A-L*B) / (96 -L*B) ] x 100%
  • wherein SR (%) is the calulated soil removal in %; wherein L*Ais the L*value for a dry fabric swatch measured by spectrophotometer (Konica Minolta Spectrophotometer CM-3600A) after washing; and wherein L* B is the L*value for a dry fabric swatch measured by spectrophotometer before washing. The results are provided in TABLES 3-5.


Claims (10)

  1. A liquid laundry detergent formulation, comprising a synergistic low temperature detergency blend comprising:
    (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid and mixtures thereof;
    (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I)
    R6-O- (EO) x- (AO) y- (EO) z-H  (I)
    wherein R6 is a linear C8-18 alkyl group; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms; wherein x is 2 to 4; wherein y is 6 to 25; wherein z is 1 to 50; and
    (c) a cleaning booster of Formula (II)
    wherein each R1 is independently a chain of Formula (III)
    wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11.
  2. The liquid laundry detergent formulation of claim 1, further comprising water.
  3. The liquid laundry detergent formulation of claim 2, wherein AO is an oxyalkylene group with 3 carbon atoms; wherein the liquid laundry detergent formulation comprises 5 to 95 wt%, based on weight of the liquid laundry detergent formulation, of the anionic surfactant (a) plus the nonionic surfactant (b) .
  4. The liquid laundry detergent formulation of claim 3, wherein the liquid laundry detergent formulation comprises 15 to 60 wt%, based on the combined weight of the anionic surfactant (a) and the nonionic surfactant (b) , of the nonionic surfactant (b) .
  5. The liquid laundry detergent formulation of claim 6, wherein the liquid laundry detergent formulation further comprises a water miscible organic solvent.
  6. The liquid laundry detergent formulation of claim 5, further comprising an optional additive selected from the group consisting of builders; hydrotropes; foam control agents; enzymes; preservatives; fragrances; fluorescent whitening agents; bleach; dyes; additive polymers; frabric softeners; pH adjusters/buffers and mixtures thereof.
  7. Use of a liquid laundry detergent formulation comprising a synergistic low temperature detergency blend for cleaning fabrics under cold wash conditions; wherein the synergisting low temperature detergency blend comprises:
    (a) an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl polyethoxy sulfates, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha-sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-1-sulfonic acids, 2-acryloxy-alkane-1-sulfonates, beta-alkyloxy alkane sulfonic acids, beta-alkyloxy alkane sulfonates, oleic acid and mixtures thereof;
    (b) a nonionic surfactant selected from the group of nonionic surfactants having formula (I)
    R6-O- (EO) x- (AO) y- (EO) z-H   (I)
    wherein R6 is a linear C8-18 alkyl group; wherein x is 2 to 4; wherein AO is an oxyalkylene group with 3 to 5 carbon atoms; wherein y is 6 to 25; wherein z is 1 to 50; and wherein the nonionic surfactant is selected based on its ability to impart detergency stability to the laundry detergent formulation for cleaning water temperatures ranging from 10 to 30 ℃; and
    (c) a cleaning booster of Formula (II)
    wherein each R1 is independently a chain of Formula (III)
    wherein each R2 is independently selected from the group consisting of a C1-8 alkyl group and a chain of Formula (III) ; wherein R3 and R4 are independently an aliphatic C3-12 alkanediyl group; wherein each R5 is independently selected from the group consisting of a hydrogen and a -C1-4 alkyl group; wherein n is an average of 0 to 8; wherein m is an average of 5 to 50; and wherein the cleaning booster has a weight average molecular weight of ≤ 10,000 Daltons; and wherein the liquid laundry detergent formulation has a pH of 6.5 to 11.
  8. A method of washing a fabric article, comprising:
    providing a soiled fabric article;
    providing a liquid laundry detergent formulation according to claim 1;
    providing a wash water at a temperature of ≤ 15 ℃; and
    applying the wash water and the liquid laundry detergent formulation to the soiled fabric article to provide a cleaned fabric article.
  9. The method of claim 8, wherein the liquid laundry detergent formulation provided is according to claim 5.
  10. The method of claim 8, wherein the liquid laundry detergent formulation provided is according to claim 6.
EP23932439.5A 2023-04-13 2023-04-13 Liquid laundry detergent with synergistic low temperature detergency blend Pending EP4695367A1 (en)

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JPH10296068A (en) * 1997-04-25 1998-11-10 Kao Corp Organic powder dispersion stabilizer and dispersion composition containing the same
JPH11152500A (en) * 1997-11-25 1999-06-08 Kao Corp Non-phosphate based detergent composition
JP4290322B2 (en) * 2000-11-01 2009-07-01 花王株式会社 How to clean blood-contaminated cloth
JP4180485B2 (en) * 2003-10-23 2008-11-12 花王株式会社 Hard surface cleaning composition
US7559955B2 (en) * 2004-02-02 2009-07-14 Basf Corporation Surfactants useful in the removal of oily soil from fabric
JP4476659B2 (en) * 2004-03-24 2010-06-09 花王株式会社 Cleaning method for textile products
AR119899A1 (en) * 2019-09-27 2022-01-19 Dow Global Technologies Llc LIQUID LAUNDRY DETERGENT WITH CLEANING REINFORCEMENT

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