WO1995034621A1 - Emulsions acqueuses contenant un agent de blanchiment hydrophobe, un tensio-actif hydrophile et un tensio-actif hydrophobe - Google Patents

Emulsions acqueuses contenant un agent de blanchiment hydrophobe, un tensio-actif hydrophile et un tensio-actif hydrophobe Download PDF

Info

Publication number
WO1995034621A1
WO1995034621A1 PCT/US1995/006482 US9506482W WO9534621A1 WO 1995034621 A1 WO1995034621 A1 WO 1995034621A1 US 9506482 W US9506482 W US 9506482W WO 9534621 A1 WO9534621 A1 WO 9534621A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydrophobic
emulsion
brightener
fabrics
surfactant
Prior art date
Application number
PCT/US1995/006482
Other languages
English (en)
Inventor
Stefano Scialla
Raffaele Scoccianti
Original Assignee
The Procter & Gamble Company
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 The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to AU25551/95A priority Critical patent/AU704895B2/en
Priority to JP8502184A priority patent/JPH10501296A/ja
Priority to MX9606251A priority patent/MX9606251A/es
Publication of WO1995034621A1 publication Critical patent/WO1995034621A1/fr

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
    • 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
    • C11D1/66—Non-ionic compounds
    • C11D1/825—Mixtures of compounds all of which are non-ionic
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/60—Optical bleaching or brightening
    • D06L4/614—Optical bleaching or brightening in aqueous solvents
    • D06L4/621—Optical bleaching or brightening in aqueous solvents with anionic brighteners
    • 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
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • the present invention relates to cleaning compositions. More particularly, the cleaning compositions according to the present invention are stable aqueous emulsions particularly suitable to be used in laundry applications for example as detergent compositions or as pre-wash treating compositions or as laundry additives to be used together with detergents.
  • a great variety of cleaning compositions have been described in the art.
  • a problem associated with common cleaning compositions is that they do not allow to deliver whitening performance which satisfactorily meet consumer's needs, when used in laundry application to treat different kind of fabrics, especially when used to treat synthetic fabrics such as polyesters, polyamides and the like.
  • compositions suitable for use in laundry application whereby the whiteness to synthetic fabrics is improved. It is a further object of the present invention to provide such compositions which can be satisfactorily used for treating various types of fabrics and clean various types of stains while providing at the same time also good fabric safety to the fabrics treated therewith. Also said compositions should provide improved whitening performance to synthetic fabrics under most common wash conditions including conditions under which the wash temperature is low, i.e. below 60° C.
  • aqueous compositions comprising a hydrophobic brightener wherein said hydrophobic brightener is emulsified in said compositions by a surfactant system comprising at least a hydrophobic surfactant having an HLB (Hydrophilic lipophilic balance) up to 9 and at least a hydrophilic surfactant having an HLB above 10.
  • HLB Hydrophilic lipophilic balance
  • compositions of the present invention allow to incorporate and to deliver hydrophobic brighteners into the wash solution, this under the most common wash conditions, e.g. below 60°C. Formulating such hydrophobic brighteners through liquid compositions being not emulsions or even through powder formulations does not allow to obtain the outstanding whitening performance associated with the present invention.
  • hydrophobic brighteners also contribute to the multi-cycle whitening of cotton fabrics. Indeed, after several wash cycles cotton fibers assume a partially hydrophobic character due for example of deposition of organic species on the fabric surface, i.e. a hydrophobic layer of soils tend to form onto aged fabrics, and thus they become sensitive to hydrophobic brighteners.
  • the hydrophobic brighteners may thus absorb onto said cotton fibers, adsorb UV light and retransmit visible blue light so providing superior whiteness.
  • compositions of the present invention are that in addition to their outstanding whitening action said compositions allow also good stain removal.
  • hydrophobic surfactants to emulsify said hydrophobic brighteners provides excellent hydrophobic soil removal and good grease cutting properties.
  • a further advantage of the present invention is that it allows for great flexibility in formulating and provides compositions being chemically and physically stable and suitable to be used in the most efficient manner by the consumer.
  • the preferred compositions therein comprise hydrogen peroxide.
  • compositions provide a means to formulate ingredients with very low water solubility, without the need for using alcoholic or solvent mixtures, which are usually undesirable for aesthetic (odor) and toxicity reasons.
  • Yet another advantage of the present invention is that hydrophobic brighteners, such as Tinopal SOP ® give to said compositions a perleascent color that improves the product aesthetics.
  • EP-A-598973 discloses a composition comprising hydrogen peroxide and as a surfactant, a fully nonionic system, i.e. at least one nonionic with an HLB above 15, at least one nonionic with an HLB of from 13 to 15, at least one nonionic with an HLB of from 9 to 13 and at least one nonionic with an HLB below 9.
  • This patent application further discloses the use of Tinopal CBS X® (4-4'-bis (2-2' styryl sulfonate) biphenyl) as an optical brightener.
  • Tinopal CBS X® also named Brightener 49®
  • Brightener 49® is a hydrophilic brightener having a solubility of 30 grams per liter at 25°C in deionized water.
  • EP-A-598170 discloses emulsions of at least one hydrophobic nonionic surfactant and at least one hydrophilic nonionic surfactant, said emulsions further comprise hydrogen peroxide, or a source thereof.
  • the invention disclosed in the '170 patent application allows to formulate compositions comprising H2O2 and a hydrophobic bleach activator (ATC), wherein said bleach activator is kept separate from H2O2.
  • the pH of said emulsions is from 1 to 5.
  • This patent application further discloses the use of optical brighteners as optional ingredients and mentions Brightener 49® in an example. Brightener 49® is not a brightener being almost insoluble in water, i.e. a hydrophobic brightener whose solubility in water is lower than 5 grams per liter at 25°C . Summary of the invention
  • the present invention is an aqueous emulsion comprising at least a hydrophilic surfactant having an HLB above 10 and at least a hydrophobic surfactant having an HLB up to 9, said aqueous emulsion further comprises a hydrophobic brightener whose solubility in water is lower than 5 grams per liter at 25 °C, or mixtures thereof.
  • the present invention also encompasses a method of bleaching or washing fabrics, especially fabrics having a hydrophobic character such as synthetic fabrics to improve fabrics whiteness.
  • the present invention also encompasses a process for the manufacture of said emulsions.
  • compositions according to the present invention are stable aqueous emulsions of surfactants which further comprise a hydrophobic brightener whose solubility in water is lower than 5 grams per liter at 25°C.
  • stable emulsion it is meant an emulsion which does not substantially separate into distinct layers, upon standing for at least two weeks at 50 °C.
  • compositions of the present invention comprise a surfactant system of at least two different surfactants, i.e. at least a hydrophobic surfactant having an HLB up to 9 and at least a hydrophilic surfactant having an HLB above 10 in order to emulsify the hydrophobic brightener.
  • said two different surfactants in order to form emulsions which are stable must have different HLB values (hydrophilic lipophilic balance), and preferably the difference in value of the HLBs of said two surfactants is at least 1 , preferably at least 3.
  • HLB values hydrophilic lipophilic balance
  • Said surfactant system makes the compositions able to incorporate a hydrophobic brightener, i.e. a compound being almost insoluble in water medium, and to delivery it into the wash solution as a finely dispersed liquid.
  • a hydrophobic brightener i.e. a compound being almost insoluble in water medium
  • the present invention allows to exploit the benefits associated with a hydrophobic brightener otherwise not exploitable under common wash conditions, i.e. below 60°C, either through liquid or powder formulation.
  • compositions according to the present invention comprise from 2% to 50% by weight of the total composition of said hydrophilic and hydrophobic surfactants, preferably from 5% to 40% and more preferably from 8% to 30%.
  • compositions according to the present invention comprise at least from 0.1% by weight of the total composition of said hydrophobic surfactant, or mixtures thereof, preferably at least 3% and more preferably at least 5% and at least from 0.1% by weight of the total composition of said hydrophilic surfactant, or mixtures thereof, preferably at least 3% and more preferably at least 6%.
  • hydrophobic nonionic surfactants and hydrophilic nonionic surfactants are the hydrophobic nonionic surfactants and hydrophilic nonionic surfactants.
  • Said hydrophobic nonionic surfactants to be used herein have an HLB up to 9, preferably below 9, more preferably below 8 and said hydrophilic surfactants have an HLB above 10, preferably above 11, more preferably above 12.
  • the hydrophobic nonionic surfactants to be used herein have excellent grease cutting properties, i.e. they have a solvent effect which contributes to hydrophobic soils removal.
  • the hydrophobic surfactants act as carrier of the hydrophobic brighteners onto the fabrics allowing thereby said brighteners to work in close proximity with the fabrics surface since the beginning of the wash.
  • Suitable nonionic surfactants for use herein include alkoxylated fatty alcohols preferably, fatty alcohol ethoxylates and/or propoxylates. Indeed, a great variety of such alkoxylated fatty alcohols are commercially available which have very different HLB values (hydrophilic lipophilic balance).
  • HLB values of such alkoxylated nonionic surfactants depend essentially on the chain length of the fatty alcohol, the nature of the alkoxylation and the degree of alkoxylation. Hydrophilic nonionic surfactants tend to have a high degree of alkoxylation and a short chain fatty alcohol, while hydrophobic surfactants tend to have a low degree of alkoxylation and a long chain fatty alcohol.
  • Surfactants catalogues are available which list a number of surfactants including nonionics, together with their respective HLB values.
  • Suitable chemical processes for preparing the nonionic surfactants for use herein include condensation of corresponding alcohols with alkylene oxide, in the desired proportions. Such processes are well known to the man skilled in the art and have been extensively described in the art. As an alternative, a great variety of alkoxylated alcohols suitable for use herein is commercially available from various suppliers.
  • Preferred hydrophobic nonionic surfactants to be used in the compositions according to the present invention are surfactants having an HLB up to 9 and being according to the formula RO-(C2H4 ⁇ ) n (C3H6 ⁇ ) m H, wherein R is a C ⁇ to C22 alkyl chain or a C ⁇ to C28 alkyl benzene chain, and wherein n+m is from 0.5 to 5 and n is from 0 to 5 and m is from 0 to 5 and preferably n+m is from 0.5 to 4 and, n and m are from 0 to 4.
  • the preferred R chains for use herein are the C ⁇ to C22 alkyl chains.
  • Dobanol R 23-3 or Dobanol R 23-2, Lutensol R T03, or mixtures thereof.
  • These Dobanol R surfactants are commercially available from SHELL.
  • These Lutensol R surfactants are commercially available from BASF and these Tergitol R surfactants are commercially available from UNION CARBIDE.
  • hydrophobic nonionic surfactants to be used herein are non alkoxylated surfactants.
  • An example is Dobanol 23 (HLB ⁇ 3 ).
  • Preferred hydrophilic nonionic surfactants to be used in the compositions according to the present invention are surfactants having an HLB above 10 and being according to the formula RO-(C2H4 ⁇ ) n (C3H ⁇ O) m H, wherein R is a CQ to C22 alkyl chain or a C ⁇ to C28 alkyl benzene chain, and wherein n+m is from 5 to 11 and n is from 0 to 11 and m is from 0 to 11 , preferably n+m is from 6 to 10 and, n and m are from 0 to 10.
  • n and m refer to the average degree of the ethoxylation/propoxylation.
  • the preferred R chains for use herein are the C ⁇ to C22 alkyl chains.
  • hydrophilic surfactants may further be used in the present invention such as anionic surfactants, in particular sulfonate and sulfate surfactants.
  • anionic surfactants are well-known in the art and have found wide application in commercial detergents.
  • anionic surfactants include C8-C22 alkyl benzene sulfonates (LAS), C8-C22 alkyl sulfates (AS), unsaturated sulfates such as oleyl sulfate, C10-C18 alkyl alkoxy sulfates (AES) and C10-C18 alkyl alkoxy carboxylates.
  • LAS C8-C22 alkyl benzene sulfonates
  • AS C8-C22 alkyl sulfates
  • unsaturated sulfates such as oleyl sulfate, C10-C18 alkyl alkoxy sulfates (AES) and C10-C18 alky
  • the neutralizing cation for the anionic synthetic sulfonates and/or sulfates is represented by conventional cations which are widely used in detergent technology such as sodium, potassium or alkanolammonium.
  • Preferred herein are the alkyl sulphate, or mixtures thereof, especially sodium alkyl sulphate having from 10 to 16 carbon atoms in the alkyl chain, preferably from 12 to 14 .
  • the compositions according to the present invention may further comprise other surfactants which should however not significantly alter the weighted average HLB value of the overall composition.
  • compositions according to the present invention comprise a hydrophobic brightener, or mixtures thereof.
  • Brighteners are compounds which have the ability to fluorescent by absorbing ultraviolet wave-lengths of light and re-emitting visible light.
  • Brighteners also referred to as fluorescent whitening agent (FWA)
  • FWA fluorescent whitening agent
  • Said brighteners are substituted stilbenes and biphenyls such as but not limited to polycyclic oxazole derivatives, styryl stilbene derivatives, aryltriazole derivatives, or mixtures thereof.
  • hydrophobic brightener it is to be understood herein any brightener whose solubility in water is lower than 5 grams per liter at 25°C.
  • Said hydrophobic brighteners to be used herein preferably have a solubility in water being lower than 3 and more preferably being lower than 1.
  • solubility of a given compound it is to be understood herein the amount of said compound solubiiized in deionized water at 25°C.
  • a compound having a solubility being lower than 5 grams per liter means that when less than 5 grams of said given compound is incorporated in deionized water at 25°C said compound is entirely dissolved in said water, i.e. a clear and stable solution is obtained.
  • incorporating 5 grams per liter or more of said given compound in water will result in a precipitation of said compound in said medium.
  • compositions according to the present invention comprise from 0.02% to 1% by weight of the total composition of said hydrophobic brightener, preferably from 0.05% to 0.5% and more preferably from 0.05% to 0.2%.
  • Preferred hydrophobic brighteners for use herein are styryl stilbene derivatives, or aryltriazole derivatives, or polycyclic oxazole derivatives such as benzo-oxazole derivatives, or mixtures thereof and particularly preferred herein are benzo-oxazole derivatives.
  • An example of such a brightener is benzoxazole,2,2'- (thiophenaldyl)bis having the following formula C18H10N2O2S, commercially available from Ciba-Geigy under the trade name Tinopal SOP®. This brightener is almost insoluble in water, i.e. it has a solubility being lower than 1 gram per liter.
  • compositions herein further comprise a hydrophilic brightener, or mixtures thereof.
  • hydrophilic brightener it is to be understood herein any brightener whose solubility in water is higher than 10 grams per liter at 25°C.
  • Said hydrophilic brighteners to be used herein preferably have a solubility in water being higher than 15 and more preferably being higher than 20.
  • the compositions according to the present invention comprise from 0% to 1% by weight of the total composition of said hydrophilic brightener, preferably from 0% to 0.5% and more preferably from 0% to 0.2%.
  • Such hydrophilic brighteners for use herein are the substituted stilbenes and biphenyls in general such as substituted stilbene 2,2'-disulfonic acid derivatives having a solubility in water higher than 10 grams per liter at 25°C.
  • An example of such a brightener is 4-4'-bis (2-2' styryl sulfonate) biphenyl, commercially available from Ciba-Geigy under the trade name Brightener 49 ®.
  • Other hydrophilic brighteners suitable to be used herein are for example Brightener 3® or Brightener 47®, also commercially available from Ciba- Geigy.
  • compositions according to the present invention are aqueous. Accordingly, the compositions according to the present invention comprise from 10% to 95% by weight of the total composition of water, preferably from 30% to 90%, most preferably from 60% to 80%. Deionized water is preferably used.
  • compositions herein influence its stability. Other than this, there are no other limitations in the pH of the composition. However, bleaching ingredients being optional but preferred ingredients of the compositions herein, it is of course necessary, for chemical stability purpose to formulate the compositions herein with bleaches at a pH as is of from 0 to 6, preferably of from 0.5 to 5 and more preferably from 0.5 to 4. The pH of the composition can be trimmed by all means available to the man skilled in the art. Accordingly, preferred compositions according to the present invention comprise bleaches, i.e. hydrogen peroxide or a water-soluble source thereof. Suitable water-soluble sources of hydrogen peroxide include perborate, percarbonate, persilicate and persulphate salts.
  • Hydrogen peroxide is most preferred to be used in the compositions according to the present invention.
  • the compositions according to the present invention comprise from 0.5% to 20% by weight of the total composition of hydrogen peroxide, preferably from 2% to 15%, most preferably from 3% to 10%.
  • compositions according to the present invention may further comprise a bleach activator.
  • bleach activator it is meant herein any compound which reacts with hydrogen peroxide to form a peracid.
  • hydrophobic bleach activators typically belong to the class of esters, amides, imides, or anhydrides.
  • a particular family of bleach activators of interest in the present invention were disclosed in applicant's co-pending European patent application No 91870207.7. Particularly preferred in that family is acetyl triethyl citrate which was also disclosed in the context of bar soaps in FR 2 362 210. Acetyl triethyl citrate has the advantages that it is environmentally friendly as it eventually degrades into citric acid and alcohol.
  • acetyl triethyl citrate has a good hydrolytical stability in the product upon storage and it is an efficient bleach activator.
  • Other bleach activators to be used in the present invention are lactam derivatives. As used herein and unless otherwise specified, the term bleach activator includes mixtures of bleach activators.
  • compositions according to the present invention may further comprise the usual optional ingredients such as perfumes, dyes, builders, chelants, pigments, enzymes, dye transfer inhibitors, solvents, buffering agents and the like.
  • compositions comprise a hydrophobic brightener having a solubility in water being lower than 5 grams per liter, i.e. being almost insoluble in water
  • the surfactant system to be chosen to emulsify said hydrophobic brightener depends on the HLB value of said brightener.
  • a suitable way to proceed is to determine the HLB value of the hydrophobic ingredient (brightener), then select both the hydrophobic surfactants which have HLB values below said HLB value of said hydrophobic ingredient and the hydrophilic surfactants which have HLB values above said HLB value of said hydrophobic ingredient, wherein the difference in the HLB values of said hydrophobic and hydrophilic nonionic surfactants is at least 1 , preferably at least 3.
  • the emulsifying system meets the equation:
  • X refers to the hydrophobic ingredient to emulsify if several hydrophobic ingredients are present
  • X refers to all of them
  • A refers to one of said nonionic surfactants (hydrophilic or hydrophobic)
  • B refers to the other said nonionic surfactant (hydrophilic or hydrophobic).
  • an adequate nonionic surfactant system would comprise a hydrophobic nonionic surfactant with for instance an HLB of 6, such as a Dobanol R 23-2 and a hydrophilic nonionic surfactant with for instance an HLB of 15, such as a Dobanol R 91-10.
  • compositions of the present invention allow to achieve improved whitening performance on hydrophobic-type of fabrics, i.e. synthetic fabrics such as polyesters, polyamides and the like.
  • improved whitening performance it is meant herein that the whiteness on fabrics (synthetic) achieved by using a composition comprising a hydrophobic brightener emulsified by a surfactant system of at least one hydrophobic surfactant and at least one hydrophilic surfactant is improved, as compared to the whiteness obtained by using the same composition with a hydrophilic brightener instead of said hydrophobic one as herein defined.
  • the hydrophobic brightener is delivered into the wash as a finely dispersed liquid and thus is active at low temperature used in common wash conditions (below 60°C).
  • compositions of the present invention which further comprise a hydrophilic brightener as defined herein allow to achieve improved whitening performance on all kinds of fabrics (cotton natural fibers as well as synthetic and mixed fabrics) as compared to the same compositions comprising only said hydrophilic brightener as the brightener.
  • compositions of the present invention comprising a hydrophobic brightener emulsified in a surfactant system as described herein is that said hydrophobic brightener may contribute to the multi-cycle whitening of cotton fibers even in absence of any hydrophilic brightener which are known to be particularly effective on cotton fabrics.
  • Aged cotton fabrics become partially hydrophobic, i.e. they are covered by thin hydrophobic layers of soils such as deposition of organic materials thus becoming sensitive to hydrophobic brighteners.
  • the present invention further encompasses a process for the manufacture of the composition described herein.
  • the process according to the present invention comprises at least three steps:
  • a hydrophobic mixture which comprises at least said hydrophobic nonionic surfactant and hydrophobic brightener.
  • Said hydrophobic mixture may further comprises other hydrophobic ingredients which are to be formulated in the composition, such as perfumes, solvents, enzymes, bleach activators and polymers.
  • a hydrophilic mixture which comprises at least said water, and said hydrophilic nonionic surfactant.
  • Said hydrophilic mixture preferably further comprises other hydrophilic ingredients which are to be formulated in the composition such as dyes, hydrophilic optical brighteners, builders, chelants, hydrogen peroxide and buffering agents.
  • hydrogen peroxide when present is preferably added last, after said buffering agent has been added.
  • first and said second steps can be performed in any order, i.e. second step first is also suitable.
  • said hydrophobic mixture and said hydrophilic mixture are mixed together.
  • compositions according to the present invention are particularly useful as laundry detergent or as laundry pretreaters, i.e. compositions which are dispensed and left to act onto fabrics before they are washed, or as laundry additives to be used together with detergents to boost their performance.
  • the compositions of the present invention may be incorporated per se in any type of detergents including detergents being in a liquid or a granular form.
  • the technologies used to incorporate the compositions of the present invention in a detergent being in a granular form are those commonly known to those skilled in the art like spraying and/or encapsulation.
  • the present invention further encompasses a method of bleaching and/or washing fabrics wherein a composition as defined hereinbefore is contacted with said fabrics. More specifically, in the preferred embodiment of the present invention where the compositions of the present invention comprise bleaches, the method of bleaching fabrics to improve fabric whiteness comprises the steps of first contacting said fabrics with a composition of the present invention, then allowing said fabrics to remain in contact with said composition, for a period of time sufficient to bleach said fabrics, typically 2 to 60 minutes, preferably 5 to 30 minutes, then rinsing said fabrics in water to remove said composition. If said fabrics are to be washed, i.e. with a conventional composition comprising at least one surface active agent, it is preferred to perform the method herein before said fabrics are washed.
  • said method according to the present invention further comprises a subsequent step where said fabrics are washed with a detergent composition comprising at least one surface active agent.
  • compositions are made which comprise the listed ingredients in the listed proportions (weight %).
  • compositions I II III IV Compositions I II III IV
  • HOES R 3639 is a terephthalate based polymer commercially available from Hoechst.
  • Composition I is an emulsion taken as reference in the following test and comprises no brighteners at all.
  • compositions II and IV are representative of the present invention.
  • Composition II is an emulsion of nonionic surfactants comprising among other hydrogen peroxide, a bleach activator (ATC) and a hydrophobic brightener, Tinopal SOP®.
  • Composition IV differs from composition II in that it further comprises a hydrophilic brightener, Brightener 49®.
  • Composition III is a composition representative of the prior art, i.e. an emulsion of nonionic surfactants comprising hydrogen peroxide and a bleach activator (ATC) and as a brightener a hydrophilic brightener.
  • a single tracer launderometer test was carried out by using said bleaching compositions mentioned above followed by the use of a detergent composition.
  • the test was performed in a stainless steel vessel. First 2 ml of each of the above bleaching compositions I to IV were diluted in 0.5 liters of tap water. The test was carried out at 18°C. The tracers, i.e. fabrics such as clothes, towels and the like, with standardized stains were added into the prepared solutions. The vessel was then kept under agitation for 20 minutes. At the end of the washing cycle the tracers were rinsed with water. Then, a detergent commercially available on the market (Dash Ultra®) was used to wash the tracers. 5g of the detergent were diluted into 0.5 liter of tap water. This solution was heated at 40° C. The vessel was then kept under agitation for 20 minutes with the tracers. At the end of the washing cycle the tracers were rinsed and dried. Then the tracers were evaluated by visual grading.
  • the tracers i.e. fabrics such as clothes, towels and the like, with standardized stains were added into the prepared solutions. The vessel was then kept under
  • compositions II, III and IV Table below lists the results in terms of whiteness obtained after one wash cycle for compositions II, III and IV versus composition I on different kinds of fabrics, polyester, cotton/polyester and cotton only.
  • the table also gives the results in terms of whiteness obtained after one wash cycle for composition I on top of which Tinopal Sop was added as is directly in the wash solution at the beginning of the wash cycle versus composition I used alone.
  • Results are expressed on a 0 to 4 performance scale evaluated by expert judgment.
  • Tinopal Sop R was added as is on top of composition I in the wash solution at the beginning of the wash cycle.
  • compositions II and IV a hydrophobic brightener emulsified in a nonionic surfactant system
  • composition III a composition wherein said hydrophobic brightener is not emulsified (composition I*) but inco ⁇ orated separately as is in the wash solution, provides better whitening performance on synthetic fabrics, e.g. polyester.
  • composition IV shows that the emulsions of the present invention comprising a hydrophobic and a hydrophilic brightener provide fabric whiteness improvement on various types of fabrics, polyester alone, cotton alone or mixtures thereof as compared to the compositions available on the market (see composition IV versus composition III).
  • compositions according to the present invention are the following. These compositions are made comprising the listed ingredients in the listed proportions (weight %): Compositions I II III
  • compositions I to III are each made by preparing two mixtures.
  • a hydrophilic mixture is prepared which comprises the hydrophilic ingredients such as water, hydrophilic brightener, S.S-EDDS, poly(4-vinylpyridine-N-oxide), Dobanol R 45-7, Dobanol R 91-10, diethylene triamine penta methylene phosphonic acid or Na alkyl sulphate. Hydrogen peroxide is added in said hydrophilic mixture as last step.
  • a hydrophobic mixture is prepared which comprises acetyl triethyl citrate, Dobanol R 23-2, Lutensol T03 , hydrophobic brightener, siiicone or Hoes R 3639.
  • compositions according to the examples above are stable and provide excellent whitening performance and safety to the fabrics treated with them while being also efficient in removing stains. These advantages are observed when using said compositions as a laundry composition or as an additive or as a pre-bleach associated with a detergent composition.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

L'invention concerne des compositions acqueuses comprenant un agent de blanchiment hydrophobe, c'est-à-dire un agent de blanchiment dont la solubilité dans l'eau est inférieure à 5 grammes par litre à 25 °C, émulsifié par un système tensio-actif comprenant au moins un tensio-actif hydrophobe ayant un rapport hydrophile-lipophile supérieur à 9 et un tensio-actif hydrophile ayant un rapport hydrophile-lipophile supérieur à 10. Des émulsions préférées comprenent également un agent de blanchiment et un activeur d'agent de blanchiment. Les compositions de cette invention permettent d'obtenir une excellente blancheur des tissus synthétiques.
PCT/US1995/006482 1994-06-10 1995-05-23 Emulsions acqueuses contenant un agent de blanchiment hydrophobe, un tensio-actif hydrophile et un tensio-actif hydrophobe WO1995034621A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU25551/95A AU704895B2 (en) 1994-06-10 1995-05-23 Aqueous emulsions containing a hydrophobic brightener, a hydrophilic surfactant and a hydrophobic surfactant
JP8502184A JPH10501296A (ja) 1994-06-10 1995-05-23 疎水性ブライトナー、親水性界面活性剤および疎水性界面活性剤を含む水性エマルション
MX9606251A MX9606251A (es) 1995-05-23 1995-05-23 Emulsiones acuosas que contienen un abrillantador hidrofobico, un agente tensioactivo hidrofilico y un agente tensioactivo hidrofobico.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94201667A EP0686691B1 (fr) 1994-06-10 1994-06-10 Emulsions aqueuses avec des azurants optiques
EP94201667.6 1994-06-10

Publications (1)

Publication Number Publication Date
WO1995034621A1 true WO1995034621A1 (fr) 1995-12-21

Family

ID=8216944

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/006482 WO1995034621A1 (fr) 1994-06-10 1995-05-23 Emulsions acqueuses contenant un agent de blanchiment hydrophobe, un tensio-actif hydrophile et un tensio-actif hydrophobe

Country Status (8)

Country Link
EP (1) EP0686691B1 (fr)
JP (1) JPH10501296A (fr)
AU (1) AU704895B2 (fr)
CA (1) CA2191569A1 (fr)
DE (1) DE69427905T2 (fr)
ES (1) ES2158878T3 (fr)
GR (1) GR3036360T3 (fr)
WO (1) WO1995034621A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5902354A (en) * 1994-04-12 1999-05-11 The Procter & Gamble Company Bleaching compositions
DE19635070A1 (de) * 1996-08-30 1998-03-05 Clariant Gmbh Flüssige Bleichmittelsuspension
DE19751860C1 (de) * 1997-11-22 1999-08-19 Henkel Ecolab Gmbh & Co Ohg Waschverfahren und Zubereitung zu seiner Durchführung
GB0418071D0 (en) * 2004-08-05 2004-09-15 Unilever Plc Fabric conditioning compositions
HUE031936T2 (en) 2009-09-14 2017-10-30 Procter & Gamble Liquid detergent composition
US8492325B2 (en) 2010-03-01 2013-07-23 The Procter & Gamble Company Dual-usage liquid laundry detergents comprising a silicone anti-foam
JP5758413B2 (ja) 2010-03-12 2015-08-05 ザ プロクター アンド ギャンブルカンパニー 消費者製品組成物で使用するｐＨ調整可能なアミドゲル化剤
US8168579B2 (en) 2010-03-12 2012-05-01 The Procter And Gamble Company Fluid detergent compositions comprising a di-amido gellant, and processes for making
US20110240510A1 (en) 2010-04-06 2011-10-06 Johan Maurice Theo De Poortere Optimized release of bleaching systems in laundry detergents
PL2399980T3 (pl) 2010-06-24 2013-01-31 Procter & Gamble Trwałe kompozycje zawierające polimer celulozy oraz celulazę
PL2399979T5 (pl) 2010-06-24 2022-05-30 The Procter And Gamble Company Rozpuszczalne produkty w dawkach jednostkowych zwierające polimer kationowy
PL2399978T5 (pl) 2010-06-24 2021-08-30 The Procter And Gamble Company Stabilne, bezwodne, płynne kompozycje zawierające polimer kationowy w postaci proszku
US20130303427A1 (en) 2011-09-13 2013-11-14 Susana Fernandez Prieto MICROCAPSULE COMPOSITIONS COMPRISING pH TUNEABLE DI-AMIDO GELLANTS
EP2865741A1 (fr) 2013-10-28 2015-04-29 Dow Global Technologies LLC Compositions liquides non aqueuses stables comprenant des ingrédients insolubles ou faiblement solubles
EP2865742A1 (fr) 2013-10-28 2015-04-29 Dow Global Technologies LLC Compositions liquides stables non aqueuses comprenant un polymère cationique sous forme d'un particule
EP2899259A1 (fr) * 2014-01-22 2015-07-29 The Procter and Gamble Company Compositions détergentes
US20160168780A1 (en) * 2014-12-16 2016-06-16 Washing Systems, Llc Process to produce hygienically clean textile
EP3109306A1 (fr) 2015-06-22 2016-12-28 The Procter and Gamble Company Compositions de detergent liquide a faible teneur en solvant
EP3184619A1 (fr) 2015-12-22 2017-06-28 The Procter & Gamble Company Compositions détergentes structurées
CN113853424A (zh) 2019-05-16 2021-12-28 联合利华知识产权控股有限公司 洗衣组合物
EP4045620A1 (fr) 2019-10-15 2022-08-24 The Procter & Gamble Company Compositions détergentes

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726814A (en) * 1971-03-15 1973-04-10 Colgate Palmolive Co Liquid laundry detergents and a process for preparing same
US3953380A (en) * 1970-10-28 1976-04-27 Colgate-Palmolive Company Liquid detergent
US4008166A (en) * 1973-09-05 1977-02-15 Ciba-Geigy Corporation Optically brightening with a synergistic mixture
US4559169A (en) * 1984-08-17 1985-12-17 The Procter & Gamble Company Stable liquid detergents containing anionic surfactant and monosulfonated brightener
US4909962A (en) * 1986-09-02 1990-03-20 Colgate-Palmolive Co. Laundry pre-spotter comp. providing improved oily soil removal
US4978475A (en) * 1988-02-26 1990-12-18 The Procter & Gamble Company Stable liquid detergents containing anionic surfactant and monosulfonated brightener
US5064570A (en) * 1987-08-26 1991-11-12 Ciba-Geigy Corporation Dispersion fluorescent brightener preparations
US5106523A (en) * 1989-06-16 1992-04-21 The Clorox Company Thickened acidic liquid composition with amine fwa useful as a bleaching agent vehicle
EP0598973A1 (fr) * 1992-11-26 1994-06-01 The Procter & Gamble Company Composition de nettoyage liquide pour tous usages

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0598170T3 (da) * 1992-11-16 1998-03-02 Procter & Gamble Rengørende og blegende sammensætninger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953380A (en) * 1970-10-28 1976-04-27 Colgate-Palmolive Company Liquid detergent
US3726814A (en) * 1971-03-15 1973-04-10 Colgate Palmolive Co Liquid laundry detergents and a process for preparing same
US4008166A (en) * 1973-09-05 1977-02-15 Ciba-Geigy Corporation Optically brightening with a synergistic mixture
US4559169A (en) * 1984-08-17 1985-12-17 The Procter & Gamble Company Stable liquid detergents containing anionic surfactant and monosulfonated brightener
US4909962A (en) * 1986-09-02 1990-03-20 Colgate-Palmolive Co. Laundry pre-spotter comp. providing improved oily soil removal
US5064570A (en) * 1987-08-26 1991-11-12 Ciba-Geigy Corporation Dispersion fluorescent brightener preparations
US4978475A (en) * 1988-02-26 1990-12-18 The Procter & Gamble Company Stable liquid detergents containing anionic surfactant and monosulfonated brightener
US5106523A (en) * 1989-06-16 1992-04-21 The Clorox Company Thickened acidic liquid composition with amine fwa useful as a bleaching agent vehicle
EP0598973A1 (fr) * 1992-11-26 1994-06-01 The Procter & Gamble Company Composition de nettoyage liquide pour tous usages

Also Published As

Publication number Publication date
EP0686691A1 (fr) 1995-12-13
GR3036360T3 (en) 2001-11-30
AU2555195A (en) 1996-01-05
ES2158878T3 (es) 2001-09-16
DE69427905D1 (de) 2001-09-13
DE69427905T2 (de) 2002-04-04
EP0686691B1 (fr) 2001-08-08
JPH10501296A (ja) 1998-02-03
AU704895B2 (en) 1999-05-06
CA2191569A1 (fr) 1995-12-21

Similar Documents

Publication Publication Date Title
EP0686691B1 (fr) Emulsions aqueuses avec des azurants optiques
EP1010749B1 (fr) Compositions liquides de blanchiment activées
US3741911A (en) Phosphate-free detergent composition
AU701779B2 (en) Aqueous cleaning compositions containing a 2-alkyl alkanol, H2O2, an anionic and a low HLB nonionic
EP0812348B1 (fr) Pretraitement du linge avec des chelateurs contenant un agent de blanchiment peroxyde pour le fer, le cuivre ou le manganese, pour diminuer la deterioration du tissu
JPH0633424B2 (ja) 溶剤を有するクリ−ニング組成物
JP2001504538A (ja) 洗濯漂白剤組成物
SK1698A3 (en) Laundry pretreatment peroxygen bleach with radical scavenger giving improved fabric/color safety
AU706186B2 (en) Bleaching compositions
JPH06200292A (ja) 液状洗剤組成物
US5880079A (en) Bleaching compositions
CN101809138A (zh) 包含螯合剂和分散剂的织物处理组合物的相关改进
PL186663B1 (pl) Zastosowanie wodnej kompozycji
CZ408497A3 (cs) Peroxidové bělící prostředky obsahující polyaminové stabilizátory, pro odstranění skvrn a zvýšení barevné stálosti textilu
EP0488750A2 (fr) Procédé et composition pour le traitement de textiles
MXPA96006251A (en) Aqueous emulsions containing a hydrophobic polisher, a hydrofilic surfactant agent and a hydrofob surgical agent
CN1154713A (zh) 含有疏水增白剂，亲水表面活性剂和疏水表面活性剂的含水乳液
AU3383397A (en) Laundry bleaching with improved safety to fabrics
CN1194662A (zh) 具有提供改进的纤维/颜色安全性的多胺稳定剂的含过氧漂白剂预先去斑组合物

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 95194430.4

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA CN JP MX US

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2191569

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: PA/a/1996/006251

Country of ref document: MX

ENP Entry into the national phase

Ref document number: 1996 750483

Country of ref document: US

Date of ref document: 19961210

Kind code of ref document: A