EP2398883A1 - Composition - Google Patents

Composition

Info

Publication number
EP2398883A1
EP2398883A1 EP10707632A EP10707632A EP2398883A1 EP 2398883 A1 EP2398883 A1 EP 2398883A1 EP 10707632 A EP10707632 A EP 10707632A EP 10707632 A EP10707632 A EP 10707632A EP 2398883 A1 EP2398883 A1 EP 2398883A1
Authority
EP
European Patent Office
Prior art keywords
composition
moles
ether
glycol
optical brightener
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.)
Withdrawn
Application number
EP10707632A
Other languages
German (de)
French (fr)
Inventor
Fabio Corradini
Fabio D'amico
Ralf Wiedemann
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.)
Reckitt Benckiser NV
Original Assignee
Reckitt Benckiser NV
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 Reckitt Benckiser NV filed Critical Reckitt Benckiser NV
Publication of EP2398883A1 publication Critical patent/EP2398883A1/en
Withdrawn legal-status Critical Current

Links

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
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0043—For use with aerosol devices
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/046—Insoluble free body dispenser
    • 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
    • C11D3/395—Bleaching agents
    • C11D3/3956—Liquid 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
    • C11D3/40—Dyes ; Pigments
    • C11D3/42—Brightening agents ; Blueing agents
    • 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

Definitions

  • the present invention relates to an aqueous cleaning composition comprising an optical brightener and a bleach.
  • Optical brighteners are common ingredients in fabric / laundry washing or cleaning agents. They are used to prevent / disguise discoloration of items being cleaned. This discoloration is commonly exhibited as a yellowing / graying of the item being cleaned and is particularly prevalent in light / white colored items.
  • Optical brighteners operate by acting as a radiation absorber / emitter. Natural day light is adsorbed and then emitted with a blue-ish hue. This emitted light aids the overcoming of the discoloration issues.
  • an aqueous composition comprising a bleach and an optical brightener.
  • an aqueous composition comprising a bleach and an optical brightener as a pre-treatment composition in a laundry / fabric washing operation.
  • composition and use of the present invention have improved performance in stain treatment when used in a fabric / laundry cleaning operation. Furthermore this is achieved whilst avoiding the problem of "white halos/spotting" which typically occurs with local applications of optical brighteners on items being cleaned resulting in areas of the item having a different shade of white. Without wishing to be bound by theory it is postulated that this enhanced performance arises due to the ability of the optical brightener to camouflage any remnants of the stain in the stain treatment step.
  • the optical brightener is present in an amount of 0.01 to lwt%, e.g. 0.08wt%.
  • the optical brightener is selected from the substance class of 4, 4 ' -diamino-2, 2 ' - stilbenedisulfonic acids (flavonic acids), 4 , 4 ' -distyryl- biphenylene, methylumbelliferones, coumarins, dihydroquino- linones, 1, 3-diaryl-pyrazolines, naphthalic acid imides, benzoxazole, benzisoxazole and benzimidazole systems as well as pyrene derivatives with heterocycle substituents .
  • the optical brightener is selected from the substance class of 4, 4 ' -diamino-2, 2 ' - stilbenedisulfonic acids (flavonic acids), 4 , 4 ' -distyryl- biphenylene, methylumbelliferones, coumarins, dihydroquino- linones, 1, 3-diaryl-pyrazolines, naphthalic acid imides,
  • the fabric treatment composition comprises a bleach.
  • the composition comprises from 0.001% to 99.99%, preferably 0.001% to 7%, preferably 2% to 6%, most preferably about 7%, by weight, of bleach.
  • the bleach is preferably peroxide bleach, most preferably hydrogen peroxide. Peroxide sources other than H 2 O 2 can be used.
  • the fabric treatment composition comprises a surfactant.
  • the composition comprises from 0.001% to 99.99%, preferably 0.05% to 15%, e.g. about 10%, by weight of surfactants.
  • the surfactant is, for example, an anionic or nonionic surfactant or mixture thereof.
  • the nonionic surfactant is preferably a surfactant having a formula RO(CH 2 CH 2 O) n H wherein R is a mixture of linear, even carbon-number hydrocarbon chains ranging from Ci 2 H 2 S to Ci 6 H 33 and n represents the number of repeating units and is a number of from about 1 to about 12.
  • R is a mixture of linear, even carbon-number hydrocarbon chains ranging from Ci 2 H 2 S to Ci 6 H 33
  • n represents the number of repeating units and is a number of from about 1 to about 12.
  • examples of other non-ionic surfactants include higher aliphatic primary alcohol containing about twelve to about 16 carbon atoms which are condensed with about three to thirteen moles of ethylene oxide.
  • nonionic surfactants include primary alcohol ethoxylates (available under the Neodol trade name from Shell Co.), such as Cn alkanol condensed with 9 moles of ethylene oxide (Neodol 1-9) , C 12 -i 3 alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5), C 1 2-1 3 alkanol with 9 moles of ethylene oxide (Neodol 23-9) , C12-15 alkanol condensed with 7 or 3 moles ethylene oxide (Neodol 25-7 or Neodol 25-3) , Ci 4 - 15 alkanol condensed with 13 moles ethylene oxide (Neodol 45-13) , C 9 -u linear ethoxylated alcohol, averaging 2.5 moles of ethylene oxide per mole of alcohol (Neodol 91-2.5), and the like.
  • primary alcohol ethoxylates available under the Neodol trade name
  • nonionic surfactants suitable for use in the present invention include ethylene oxide condensate products of secondary aliphatic alcohols containing 11 to 18 carbon atoms in a straight or branched chain configuration condensed with 5 to 30 moles of ethylene oxide.
  • examples of commercially available non-ionic detergents of the foregoing type are Cn-is secondary alkanol condensed with either 9 moles of ethylene oxide (Tergitol 15-S-9) or 12 moles of ethylene oxide (Tergitol 15-S-12) marketed by Union Carbide, a subsidiary of Dow Chemical.
  • Octylphenoxy polyethoxyethanol type nonionic surfactants for example, Triton X-IOO, as well as amine oxides can also be used as a nonionic surfactant in the present invention.
  • linear primary alcohol ethoxylates are available under the Tomadol trade name such as, for example, Tomadol 1-7, a Cu linear primary alcohol ethoxylate with 7 moles EO; Tomadol 25-7, a Ci 2 -Ci S linear primary alcohol ethoxylate with 7 moles EO; Tomadol 45-7, a Ci 4 -Ci 5 linear primary alcohol ethoxylate with 7 moles EO; and Tomadol 91- 6, a C 9 -Ci I linear alcohol ethoxylate with 6 moles EO.
  • Tomadol 1-7 a Cu linear primary alcohol ethoxylate with 7 moles EO
  • Tomadol 25-7 a Ci 2 -Ci S linear primary alcohol ethoxylate with 7 moles EO
  • Tomadol 45-7 a Ci 4 -Ci 5 linear primary alcohol ethoxylate with 7 moles EO
  • linear primary alcohol ethoxylates are available under the Lutensol trade name such as, for example, Lutensol A3N, a C1 3 - 15 linear primary alcohol ethoxylate with 3 moles EO; Lutensol LA60, a C13- 1 5 linear primary alcohol ethoxylate with 7 moles EO.
  • Genapol such as, for example, Genapol LA3, a C 13 - 15 linear primary alcohol ethoxylate with 3 moles EO; Genapol LA070, a Ci 3 _i 5 linear primary alcohol ethoxylate with 7 moles EO
  • Tomadol 45-7 a C14-C 15 linear primary alcohol ethoxylate with 7 moles EO; and Tomadol 91-6, a C 9 -Cn linear alcohol ethoxylate with 6 moles EO.
  • nonionic surfactants are amine oxides, alkyl amide oxide surfactants.
  • Preferred anionic surfactants are frequently provided as alkali metal salts, ammonium salts, amine salts, aminoalco- hol salts or magnesium salts.
  • sulfate or sulfonate compounds including: alkyl benzene sulfates, alkyl sulfates, alkyl ether sulfates, al- kylamidoether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates, alkylsulfonates, alkylamide sulfonates, alkylarylsulfonates, olefinsulfonates, paraffin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosucci- nates, alkylamide sulfosuccinates, alkyl sulfosuccinamate, alkyl sulfoacetates, alkyl phosphates, alkyl ether phosphates, acyl sarconsinates, acyl isethionates, and N-acy
  • surfactants which may be used are alkyl naphthalene sulfonates and acyl / oleoyl sarcosinates and mixtures thereof.
  • the fabric treatment composition comprises a solvent.
  • the composition comprises from 0% to 99.99% preferably from 0% to 10% by weight, of solvent.
  • the solvent constituent may comprise one or more alcohol, glycol, acetate, ether acetate or glycol ether.
  • exemplary alcohols useful in the compositions of the invention include C 2 -Cs primary and secondary alcohols which may be straight chained or branched, preferably pentanol and hexa- nol. More preferably the solvent is a glycol ether.
  • Preferred examples of glycol ethers include glycol ethers hav- ing the general structure Ra-O-Rb-OH, wherein Ra is an alkoxy of 1 to 20 carbon atoms, or aryloxy of at least 6 carbon atoms, and Rb is an ether condensate of propylene glycol and/or ethylene glycol having from 1 to 10 glycol monomer units.
  • Specific and preferred solvents are selected from propylene glycol methyl ether, dipropylene glycol methyl ether, dipropylene glycol propyl ether, dipropylene glycol butyl ether, tripropylene glycol methyl ether, propylene glycol n-propyl ether, ethylene glycol n-butyl ether, diethylene glycol n-butyl ether, diethylene glycol methyl ether, propylene glycol, ethylene glycol, isopropanol, ethanol, methanol, diethylene glycol monoethyl ether acetate, and particularly useful are, propylene glycol phenyl ether, ethylene glycol hexyl ether and diethylene glycol hexyl ether .
  • the solvent or mixture of solvent is from the propanol series (Dowanol P-series) and among these Dipropylene Glycol n-Propyl Ether, Dipropylene Glycol n- Butyl Ether and Propylene Glycol Phenyl Ether. These are commercially available from Dow Chemicals as Dowanol DPnP, Dowanol DPnB and Dowanol PPH respectively.
  • the fabric treatment composition comprises a builder. Where present the composition comprises from 0% to 99.99% preferably from 0% to 10% by weight, of builder.
  • the fabric treatment composition may comprise minor amounts of various optional ingredients, including enzymes, dye transfer inhibition agents, dye catchers, preservatives, anti-static agents, fragrances, odour absorbing components.
  • the pH range of the fabric treatment composition is typically from about 3 to about 8, preferably about 3.5.
  • a most preferred composition is below: -
  • Non Ionic Surfactant 0.05% to 15% Anionic Surfactant: 0.05% to 5% IDS 30%: 1.0wt% H 2 O 2 50%: 0.05% to 10% Propylene glycol: 2.0wt% Fragrance: 0.1 - 0.5wt% Sulphuric Acid 93%: 0.1 - 0.5wt% Optical Brightener: 0.1 - 1.0wt% Water: Rest
  • the composition is most preferably suitable for discharge / application onto an item being cleaned using a spray device. Indeed in a preferred embodiment of the second aspect of the invention a spray device is employed. Such application typically occurs before the item is washed in an automatic washing machine, i.e. the composition is used as pre-treater. In this application it is most noticeable that the problem of white halos/spotting is avoided.
  • the spray device may comprise a propellent and thus be in the form of an aerosol type device, wherein the pressure of the propellant is used to aid the discharge of the contents of the spray device when the spray device is activated.
  • the spray device may be manually operated and thus be in the form of a trigger spray device. In these device application of pressure to an operating lever causes the operation of a pump which brings about dispense of the contents of the spray device.
  • wash parameters were set to large load (86° F, 120 ppm, cold rinse, 4 lbs ballast) detergent was added and agitated for 30 seconds-lminute . Ballast was added. Test cloths were set up on bench top. These were sprayed and rubbed for the stain pre-treatment . 2 ml of pre-treat product was applied to the stains on cloth; the product was rubbed 5 times backward and forward.
  • the reflectance (L*a*b*) of residual stains was measured using the Datacolor 650 colorimeter (photoelectric colorimeter) or the equivalent with the UV filter. Background readings were taken on the white background that did not come into contact with stain or pre-treat material. All readings were taken after the washing and drying cycles are completed.
  • composition A in accordance with the invention showed better cleaning than composition B (comparative) .
  • Composi- tion A was found statistically superior than Formula B on stain removal of 5 out of 20 stains (with the remainder being parity performance) .

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

Abstract

The use of an aqueous composition. The composition comprises a bleach and an optical brightener. The use is as a pre-treatment composition in a laundry / fabric washing operation.

Description

COMPOSITION
The present invention relates to an aqueous cleaning composition comprising an optical brightener and a bleach.
Optical brighteners are common ingredients in fabric / laundry washing or cleaning agents. They are used to prevent / disguise discoloration of items being cleaned. This discoloration is commonly exhibited as a yellowing / graying of the item being cleaned and is particularly prevalent in light / white colored items.
Optical brighteners operate by acting as a radiation absorber / emitter. Natural day light is adsorbed and then emitted with a blue-ish hue. This emitted light aids the overcoming of the discoloration issues.
It is an object of the present invention to provide an improved formulation comprising an optical brightener.
According to a first aspect of the present invention there is provided an aqueous composition comprising a bleach and an optical brightener.
According to a second aspect of the present invention there is provided the use of an aqueous composition comprising a bleach and an optical brightener as a pre-treatment composition in a laundry / fabric washing operation.
Surprisingly, it has been found that the composition and use of the present invention have improved performance in stain treatment when used in a fabric / laundry cleaning operation. Furthermore this is achieved whilst avoiding the problem of "white halos/spotting" which typically occurs with local applications of optical brighteners on items being cleaned resulting in areas of the item having a different shade of white. Without wishing to be bound by theory it is postulated that this enhanced performance arises due to the ability of the optical brightener to camouflage any remnants of the stain in the stain treatment step.
Preferably the optical brightener is present in an amount of 0.01 to lwt%, e.g. 0.08wt%.
It is preferred that the optical brightener is selected from the substance class of 4, 4 ' -diamino-2, 2 ' - stilbenedisulfonic acids (flavonic acids), 4 , 4 ' -distyryl- biphenylene, methylumbelliferones, coumarins, dihydroquino- linones, 1, 3-diaryl-pyrazolines, naphthalic acid imides, benzoxazole, benzisoxazole and benzimidazole systems as well as pyrene derivatives with heterocycle substituents .
Preferably the fabric treatment composition comprises a bleach. Where present the composition comprises from 0.001% to 99.99%, preferably 0.001% to 7%, preferably 2% to 6%, most preferably about 7%, by weight, of bleach. The bleach is preferably peroxide bleach, most preferably hydrogen peroxide. Peroxide sources other than H2O2 can be used.
Preferably the fabric treatment composition comprises a surfactant. Where present the composition comprises from 0.001% to 99.99%, preferably 0.05% to 15%, e.g. about 10%, by weight of surfactants.
The surfactant is, for example, an anionic or nonionic surfactant or mixture thereof. The nonionic surfactant is preferably a surfactant having a formula RO(CH2CH2O)nH wherein R is a mixture of linear, even carbon-number hydrocarbon chains ranging from Ci2H2S to Ci6H33 and n represents the number of repeating units and is a number of from about 1 to about 12. Examples of other non-ionic surfactants include higher aliphatic primary alcohol containing about twelve to about 16 carbon atoms which are condensed with about three to thirteen moles of ethylene oxide.
Other examples of nonionic surfactants include primary alcohol ethoxylates (available under the Neodol trade name from Shell Co.), such as Cn alkanol condensed with 9 moles of ethylene oxide (Neodol 1-9) , C12-i3 alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5), C12-13 alkanol with 9 moles of ethylene oxide (Neodol 23-9) , C12-15 alkanol condensed with 7 or 3 moles ethylene oxide (Neodol 25-7 or Neodol 25-3) , Ci4-15 alkanol condensed with 13 moles ethylene oxide (Neodol 45-13) , C9-u linear ethoxylated alcohol, averaging 2.5 moles of ethylene oxide per mole of alcohol (Neodol 91-2.5), and the like.
Other examples of nonionic surfactants suitable for use in the present invention include ethylene oxide condensate products of secondary aliphatic alcohols containing 11 to 18 carbon atoms in a straight or branched chain configuration condensed with 5 to 30 moles of ethylene oxide. Examples of commercially available non-ionic detergents of the foregoing type are Cn-is secondary alkanol condensed with either 9 moles of ethylene oxide (Tergitol 15-S-9) or 12 moles of ethylene oxide (Tergitol 15-S-12) marketed by Union Carbide, a subsidiary of Dow Chemical.
Octylphenoxy polyethoxyethanol type nonionic surfactants, for example, Triton X-IOO, as well as amine oxides can also be used as a nonionic surfactant in the present invention.
Other examples of linear primary alcohol ethoxylates are available under the Tomadol trade name such as, for example, Tomadol 1-7, a Cu linear primary alcohol ethoxylate with 7 moles EO; Tomadol 25-7, a Ci2-CiS linear primary alcohol ethoxylate with 7 moles EO; Tomadol 45-7, a Ci4-Ci5 linear primary alcohol ethoxylate with 7 moles EO; and Tomadol 91- 6, a C9-CiI linear alcohol ethoxylate with 6 moles EO.
Other examples of linear primary alcohol ethoxylates are available under the Lutensol trade name such as, for example, Lutensol A3N, a C13-15 linear primary alcohol ethoxylate with 3 moles EO; Lutensol LA60, a C13-15 linear primary alcohol ethoxylate with 7 moles EO. Also Genapol such as, for example, Genapol LA3, a C13-15 linear primary alcohol ethoxylate with 3 moles EO; Genapol LA070, a Ci3_i5 linear primary alcohol ethoxylate with 7 moles EO
Tomadol 45-7, a C14-C15 linear primary alcohol ethoxylate with 7 moles EO; and Tomadol 91-6, a C9-Cn linear alcohol ethoxylate with 6 moles EO.
Other nonionic surfactants are amine oxides, alkyl amide oxide surfactants. Preferred anionic surfactants are frequently provided as alkali metal salts, ammonium salts, amine salts, aminoalco- hol salts or magnesium salts. Contemplated as useful are one or more sulfate or sulfonate compounds including: alkyl benzene sulfates, alkyl sulfates, alkyl ether sulfates, al- kylamidoether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates, alkylsulfonates, alkylamide sulfonates, alkylarylsulfonates, olefinsulfonates, paraffin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosucci- nates, alkylamide sulfosuccinates, alkyl sulfosuccinamate, alkyl sulfoacetates, alkyl phosphates, alkyl ether phosphates, acyl sarconsinates, acyl isethionates, and N-acyl taurates. Generally, the alkyl or acyl radical in these various compounds comprise a carbon chain containing 12 to 20 carbon atoms.
Other surfactants which may be used are alkyl naphthalene sulfonates and acyl / oleoyl sarcosinates and mixtures thereof.
Preferably the fabric treatment composition comprises a solvent. Where present the composition comprises from 0% to 99.99% preferably from 0% to 10% by weight, of solvent.
The solvent constituent may comprise one or more alcohol, glycol, acetate, ether acetate or glycol ether. Exemplary alcohols useful in the compositions of the invention include C2-Cs primary and secondary alcohols which may be straight chained or branched, preferably pentanol and hexa- nol. More preferably the solvent is a glycol ether. Preferred examples of glycol ethers include glycol ethers hav- ing the general structure Ra-O-Rb-OH, wherein Ra is an alkoxy of 1 to 20 carbon atoms, or aryloxy of at least 6 carbon atoms, and Rb is an ether condensate of propylene glycol and/or ethylene glycol having from 1 to 10 glycol monomer units. Preferred are glycol ethers having 1 to 5 glycol monomer units.
Specific and preferred solvents are selected from propylene glycol methyl ether, dipropylene glycol methyl ether, dipropylene glycol propyl ether, dipropylene glycol butyl ether, tripropylene glycol methyl ether, propylene glycol n-propyl ether, ethylene glycol n-butyl ether, diethylene glycol n-butyl ether, diethylene glycol methyl ether, propylene glycol, ethylene glycol, isopropanol, ethanol, methanol, diethylene glycol monoethyl ether acetate, and particularly useful are, propylene glycol phenyl ether, ethylene glycol hexyl ether and diethylene glycol hexyl ether .
Most preferably the solvent or mixture of solvent is from the propanol series (Dowanol P-series) and among these Dipropylene Glycol n-Propyl Ether, Dipropylene Glycol n- Butyl Ether and Propylene Glycol Phenyl Ether. These are commercially available from Dow Chemicals as Dowanol DPnP, Dowanol DPnB and Dowanol PPH respectively.
Other useful solvents are hydrotropes such as sodium toluene sulfonate and sodium cumene sulfonate, short-chain alcohols such as ethanol and isopropanol, and the like. They can be present in the compositions as only solvents or in combination with other solvents. Preferably the fabric treatment composition comprises a builder. Where present the composition comprises from 0% to 99.99% preferably from 0% to 10% by weight, of builder.
The fabric treatment composition may comprise minor amounts of various optional ingredients, including enzymes, dye transfer inhibition agents, dye catchers, preservatives, anti-static agents, fragrances, odour absorbing components.
The pH range of the fabric treatment composition is typically from about 3 to about 8, preferably about 3.5.
A most preferred composition is below: -
Non Ionic Surfactant: 0.05% to 15% Anionic Surfactant: 0.05% to 5% IDS 30%: 1.0wt% H2O2 50%: 0.05% to 10% Propylene glycol: 2.0wt% Fragrance: 0.1 - 0.5wt% Sulphuric Acid 93%: 0.1 - 0.5wt% Optical Brightener: 0.1 - 1.0wt% Water: Rest
pH 3.5, density 1.01 g/ml, Dry residue 9%
The composition is most preferably suitable for discharge / application onto an item being cleaned using a spray device. Indeed in a preferred embodiment of the second aspect of the invention a spray device is employed. Such application typically occurs before the item is washed in an automatic washing machine, i.e. the composition is used as pre-treater. In this application it is most noticeable that the problem of white halos/spotting is avoided.
The spray device may comprise a propellent and thus be in the form of an aerosol type device, wherein the pressure of the propellant is used to aid the discharge of the contents of the spray device when the spray device is activated. Alternatively the spray device may be manually operated and thus be in the form of a trigger spray device. In these device application of pressure to an operating lever causes the operation of a pump which brings about dispense of the contents of the spray device.
The invention is now described with reference to the following non-limiting Examples.
Examples
This testing followed the standard procedure for ASTM D 4265-83 (Revised 1/10/98), Standard Guide for Evaluating Stain Removal Performance in Home Laundering.
Products
(A is in accordance with the invention, B is a comparative product)
Washing
Once wash parameters were set to large load (86° F, 120 ppm, cold rinse, 4 lbs ballast) detergent was added and agitated for 30 seconds-lminute . Ballast was added. Test cloths were set up on bench top. These were sprayed and rubbed for the stain pre-treatment . 2 ml of pre-treat product was applied to the stains on cloth; the product was rubbed 5 times backward and forward.
Reading/Evaluation
The reflectance (L*a*b*) of residual stains was measured using the Datacolor 650 colorimeter (photoelectric colorimeter) or the equivalent with the UV filter. Background readings were taken on the white background that did not come into contact with stain or pre-treat material. All readings were taken after the washing and drying cycles are completed.
The results were statistically analysed using ANOVA general linear model with Tukey correction at 95% Confidence Level.
Results
Composition A (in accordance with the invention) showed better cleaning than composition B (comparative) . Composi- tion A was found statistically superior than Formula B on stain removal of 5 out of 20 stains (with the remainder being parity performance) .

Claims

CIAIMS
1. The use of an aqueous composition comprising a bleach and an optical brightener as a pre-treatment composition in a laundry / fabric washing operation.
2. Use of the applicator according to claim 1 as a pre- spotter / pre-treater for treatment of stains on clothing before washing.
3. The use according to claim 1 or 2, wherein the composition is applied using a spray device.
4. The use according to any one of claims 1 to 3, wherein the optical brightener is present in an amount of 0.01 to lwt%.
5. The use according to claim 4, wherein the bleach is present in an amount of 0.01 to 10wt%.
6. An applicator for a detergent composition for use as a pre-spotter / pre-treater for treatment of stains on clothing before washing comprising a spray device enclosing a composition comprising an optical brightener.
EP10707632A 2009-02-20 2010-02-19 Composition Withdrawn EP2398883A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0902917.4A GB0902917D0 (en) 2009-02-20 2009-02-20 Composition
PCT/GB2010/000294 WO2010094926A1 (en) 2009-02-20 2010-02-19 Composition

Publications (1)

Publication Number Publication Date
EP2398883A1 true EP2398883A1 (en) 2011-12-28

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EP10707632A Withdrawn EP2398883A1 (en) 2009-02-20 2010-02-19 Composition

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GB (1) GB0902917D0 (en)
WO (1) WO2010094926A1 (en)

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WO2010094926A1 (en) 2010-08-26

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