AU706186B2 - Bleaching compositions - Google Patents
Bleaching compositions Download PDFInfo
- Publication number
- AU706186B2 AU706186B2 AU25933/95A AU2593395A AU706186B2 AU 706186 B2 AU706186 B2 AU 706186B2 AU 25933/95 A AU25933/95 A AU 25933/95A AU 2593395 A AU2593395 A AU 2593395A AU 706186 B2 AU706186 B2 AU 706186B2
- Authority
- AU
- Australia
- Prior art keywords
- hydrophobic
- hydrophilic
- composition
- hydrogen peroxide
- composition according
- 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.)
- Ceased
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
- C11D1/825—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
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3945—Organic per-compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—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
- 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
Abstract
Compositions are described which are formulated as emulsions of a hydrophilic nonionic surfactant and a hydrophobic nonionic surfactant, and which further comprise an effective amount of benzoyl peroxide. Preferred compositions further comprise hydrogen peroxide. The compositions herein are particularly useful for the bleaching of fabrics.
Description
WO 95/35255 PCT/US95/06222 1 Bleaching Compositions Technical Field The present invention relates to bleaching compositions. The compositions of the present invention are particularly useful for laundry bleaching.
Backaround Compositions for the bleaching of laundry have been extensively described in the art. Bleaching compositions can be classified into peroxide bleaching compositions and hypochlorite bleaching compositions. Peroxide bleaching compositions have the advantage over hypochlorite bleaching compositions that they are generally considered as being somewhat safer to fabrics, specifically to colored fabrics. Peroxide compositions however have the inconveniency that they are often chemically unstable, which makes it difficult to formulate peroxide bleaching compositions which are sufficiently stable to be commercialized. A possible solution to this problem consists in formulating compositions with a high level of peroxide, to extend the "effective" period of the composition. A possible drawback of this solution is that compositions may reach the user which still comprise a high amount of peroxide, whereby possible skin itching may occur if the user's skin comes in contact with the peroxide composition. This itching phenomenon is quite moderate and fully reversible, but is does constitute potential discomfort for the user.
Also, peroxide species are poorly effective in bleaching at lower temperatures, so that it is required to formulate activated peroxide bleaching compositions for use across a wider range of temperatures. Activated bleaching compositions comprise a bleach activator, typically a peracid precursor, which will react in an aqueous medium with hydrogen peroxide to form the corresponding peracid. This peracid is more effective at lower temperatures.
It is thus an object of the present invention to formulate a peroxide bleaching composition which is stable, without having to resort to using higher amounts of peroxide, and which can be activated in a stable manner.
It is also an object of the present invention to formulate a bleaching composition with superior bleaching performance.
o: In response we have now found that this object can be met by formulating an aqueous emulsion of nonionic surfactants, in which benzoyl peroxide is incorporated. Benzoyl peroxide may constitute the bleaching peroxide specie alone, as it hydrolyzes in aqueous medium in neutral/alkaline pH so 20 as to generate a peracid. But in a preferred embodiment of the present invention, a composition is formulated which comprises hydrogen peroxide in one phase of the emulsion and benzoyl peroxide in the other phase of the emulsion.
Cogo 25 Bleaching compositions formulated as emulsions have been disclosed in EP 598 170. The compositions in '170 are emulsions comprising hydrogen peroxide in one phase and a hydrophobic liquid ingredient in the other phase. This hydrophobic liquid ingredient can be a peracid precursor.
2a Summary of the Invention The present invention is an aqueous bleaching composition in the form of an emulsion comprising water and at least one hydrophilic nonionic surfactant and at least one hydrophobic nonionic surfactant wherein the difference in HLB value between the said hydrophilic surfactant and said hydrophobic surfactant is at least 1 and wherein said emulsion further comprises from 1% to 20% of benzoyl peroxide and from 1 to 10% of hydrogen peroxide or a source of from 1% to 10% hydrogen peroxide.
go a a.
e a a a. a a.* a.
a a.
o a a,« a a a a a EP C:XWINWORD\ELLENSPECIRLE\25933A.DOC WO 95/35255 PCT/US95/06222 3 Detailed description of the invention The compositions according to the present invention are stable aqueous emulsions of nonionic surfactants. By stable emulsion it is meant an emulsion which does not macroscopically separate into distinct layers, upon standing for at least two weeks at 20 more preferably at least six months.
As used herein; the term emulsion refers to emulsions which are obtained when smaller amounts of benzoyl peroxide are used, so that it is completely lo soluble in the hydrophobic nonionic surfactant, as well as suspensions which are obtained when the level of Benzoyl peroxide is increased to the point where part of it is not dissolved in the hydrophobic nonionic surfactant, and aggregates of Benzoyl Peroxide are formed in the aqueous phase.
The 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 to 90%, most preferably from 60% to 85%. Deionized water is preferably used.
The compositions according to the present invention are emulsions of nonionic surfactants. Said emulsions of nonionic surfactants comprise at least two nonionic surfactants. In order to form emulsions which are stable, said two nonionic surfactants 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, more preferably at least 3. By appropriately combining at least two of said nonionic surfactants with different HLBs in water, emulsions according to the present invention will be formed.
One of said nonionic surfactants used herein is a nonionic surfactant with an HLB above 11 (herein referred to as hydrophilic nonionic surfactant), whereas the other one is a nonionic surfactant with an HLB below 10 (herein referred to as hydrophobic nonionic surfactant). Preferably, the concentration ratio between hydrophilic and hydrophobic surfactants should be chosen in such a way that the weighted average of their HLB is of from 9 to 11. The weighted average HLB is defined as: WO 95/35255 PCT/US95/06222 4 of hydrophilic x HLB of hydrophilic) of hydrophobic x HLB of hydrophobic) where: of hydrophilic [hydrophilic] total hydrophilic hydrophobic], of hydrophobic [hydrophobic] total [hydrophilic hydrophobic], and of hydrophilic hydrophobic 1.
By [hydrophilic] and [hydrophobic] we mean the weight concentration, based on the total formula, of the hydrophilic and hydrophobic surfactants, respectively. In addition to the above two surfactants, the compositions according to the present invention may comprise any other nonionic surfactants, but preferably the weighted average HLB, calculated with the additional surfactants, still falls in the specified range.
Suitable nonionic surfactants for use herein include alkoxylated fatty alcohols. Indeed, a great variety of such alkoxylated fatty alcohols are commercially available which have very different HLB values (hydrophilic lipophilic balance). The HLB values of such alkoxylated nonionic surfactants depend essentially on the nature of the alkoxylation and the degree of alkoxylation. Hydrophilic nonionic surfactants tend to have a higher degree of alkoxylation, while hydrophobic surfactants tend to have a lower 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.
The compositions according to the present invention comprise from 2% to by weight of the total composition of said hydrophilic and hydrophobic nonionic surfactants, preferably from 3% to 40%, most preferably from 4% to As an essential ingredient, the compositions according to the present invention further comprise an effective amount of benzoyl peroxide in the hydrophobic phase. By effective amount, it is meant herein an amount sufficient for the bleaching of fabrics. According to the present invention, benzoyl peroxide can be used with or without hydrogen peroxide. When it is WO 95/35255 PCT/US95/06222 used without hydrogen peroxide, it simply hydrolyzes in neutral/alkaline medium, i.e. in the bleaching liquor formed by diluting the compositions of the present invention in water, so as to form peroxybenzoate which is the bleaching specie. Accordingly, when benzoyl peroxide is used alone, the compositions herein comprise from 1 to 20 by weight of the total composition, preferably from 2 to 10 by weight.
As an alternative, benzoyl peroxide can be used herein together with hydrogen peroxide. Both ingredients are prevented from reacting in the composition, as hydrogen peroxide is incorporated in the hydrophilic phase, while benzoyl peroxide is incorporated in the hydrophobic phase. Thus both ingredients are kept separate until the composition is diluted in an aqueous medium for use. Upon dilution, the emulsion structure is ruptured, and benzoyl peroxide is perhydrolyzed by hydrogen peroxide so as to form peroxybenzoate. In this scenario, two moles of peroxybenzoate are formed per mole of benzoyl peroxide, whereas in the previously described scenario, only one mole of peroxybenzoate was formed per mole of benzoyl peroxide.
Accordingly, when the compositions herein are formulated with hydrogen peroxide, they should comprise from 1 to 10 by weight of the total composition of hydrogen peroxide, preferably from 2 to 4 and from 1% to 20% by weight of the total composition of benzoyl peroxide, preferably from 1 to 10%. Of course, instead of hydrogen peroxide itself, one may use sources of hydrogen peroxide. Suitable sources of hydrogen peroxide for use herein include percarbonates, perborates, persulfates and the like.
We have observed that the pH of the compositions herein plays a role in the chemical stability of the composition. Accordingly, the compositions herein are preferably formulated at a pH of from 1 to 6, preferably 2 to 5. A variety of suitable means can be used for adjusting the pH of the compositions, including organic or inorganic acids, alkanolamines and the like. It may be advantageous to use alkanolamines, in particular monoethanolamine, inasmuch as they have an additional effect of regulating the viscosity of the emulsion, without compromising on its physical stability.
The compositions herein may comprise a variety of optional ingredients. A preferred optional feature of the compositions herein is the presence of radical scavengers, which are beneficial to the stability of the compositions herein. Suitable radical scavengers for use herein include the well-known substituted mono and di hydroxy benzenes and their analogs, alkyl and aryl carboxylates, and mixtures thereof. Preferred radical scavengers for use herein include butyl hydroxy toluene, mono-tert-butyl hydroquinone, benzoic acid, toluic acid, t-butyl catechol, benzylamine, 1,1,3-tris(2-methyl-4-hydroxybutane, commercially available under the trade name Topanol CA ex ICI, as well as n-propyl-gallate. Radical scavengers, when used, are typically present herein in amounts ranging from 0.01 to 2 by weight of the total composition, preferably 0.01 to 0.2 It may also be useful to formulate chelants herein, which may further improve 15 the chemical stability of the compositions herein. Typical chelants useful herein include phosphonates, ethylene diamine dissuccinic acid, dipicolinic acid and diethylene triamine penta acetate and the like. Suitable levels for 0* chelants herein are comprised between 0.01% and 5% by weight of the total composition. An increase in chemical stability could be observed by a 20 synergistic action of both the previous ingredients, radical scavengers and chelants, combined together.
a The compositions herein may further comprise other optionals, including anionic and cationic surfactants, to be formulated in the hydrophilic phase 25 herein, other bleach activators to be used in mixture with benzoyl peroxide, such as acetyl triethyl citrate, builders and chelants, as well as aesthetics, 6a including dyes and perfumes and the like. Accordingly throughout the description and claims of this specification, the word "comprise" and variations of the word, such as "comprising" and "comprises", is not intended to exclude other additives or components or integers.
The compositions according to the present invention are particularly useful as laundry bleaches, including as pretreaters, i.e. compositions which are dispensed and left to act onto fabrics before they are washed.
Compositions herein can be formulated as laundry additives to be used before or together with detergents in an aqueous medium to boost their S.performance, or as detergent compositions per se. Compositions herein can also be used as automatic or hand dishwashing compositions, as hard surface cleaners, as denture cleansers, or as carpet cleaners.
S*
S "*222 EP C:\WINWORD\ELLEN\SPECIRLE\25933A.DOC WO 95/35255 PCT/US95/06222 7 The present invention further encompasses a process for the manufacture of the compositions described herein. The process according to the present invention comprises at least three steps: In the first step, a hydrophobic mixture is prepared which comprises said hydrophobic nonionic surfactant, said benzoyl peroxide, together with other, optional, hydrophobic ingredients which are to be formulated in the composition, such as perfumes, solvents, enzymes, bleach activators and polymers.
In the second step, a hydrophilic mixture is prepared 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, optical brighteners, builders, chelants, hydrogen peroxide or sources thereof and buffering agents.
Naturally, said first and said second steps can be performed in any order, i.e second step first is also suitable.
In the third step of the process according to the present invention, said hydrophobic mixture and said hydrophilic mixture are mixed together.
Examples Experimental data Composition 1: Benzoyl Peroxide 2% H202 4% Sodium Coconut Alkyl Sulfate Dobanol 23-3 Dobanol 91-8 3% Coconut trimethyl ammonium chloride 1% Water and minors to balance WO 95/35255 PCT/US95/06222 Composition 2 Benzoyl Peroxide H202 Sodium Coconut Alkyl Sulfate Lutensol T03 Dobanol 45-7 Water and minors 4% 2% 7% 8% to balance Composition 3 Benzoyl Peroxide Sodium Coconut Alkyl Sulfate Dobanol 45-7 Lutensol T03 Water and minors pH 11% 4% to balance 4 The technical data hereinafter illustrates the benefits obtained from benzoyl peroxide, according to the present invention.
The tests are performed on cotton fabrics stained as indicated below. 0.2g of tested bleaching composition is applied on each stain. The fabrics (6 replicates each) are then washed in a Launder-o-meter, using 5 g of Dash ultra Powder in 500 ml water. There is no waiting period between application of tested bleaching composition and washing. A reference bleaching composition is used which is an activated bleaching composition comprising hydrogen peroxide and acetyl triethyl citrate, as disclosed in WO 93/12067.
Specifically, the reference composition comprised 6% H202, 3.5% Acetyl triethyl citrate, 7% Lutensol ®T03, 8% Dobanol 45-7, 2% Sodium Alkyl Sulfate, water to balance, pH=4. A comparison is made, in a single variable test, between benzoyl peroxide (the prototype) and acetyl triethyl citrate (the reference) at the same level WO 95/35255 PCT/US95/06222 9 The results are expressed as panel score units, as evaluated by expert panel judges.
prototype vs. reference
C
Tomato 4.0s Tea 1.2s Cocoa 0.3 Grass 0.2s Wine 0.7s Vegetal Oil 3.2s Blood 1.2s 600 C 1.7s 1.2s 0.1 1.1s 2.8s 0.8 The results above indicate a strong benefit on peroxide instead of acetyl triethyl citrate, at a peroxide, and the same level of activator.
all stains, using benzoyl given level of hydrogen Using the same test conditions as above, a similar comparison was made between a prototype with 4% H202 and 2% benzoyl peroxide, vs a reference comprising 7% of H202.
prototype vs. reference
C
Tomato 2.2s Tea 1.2s Cocoa 0.4 Grass 1.0s Wine 0.8s Vegetal Oil 2.2s Make up 1.8s 600 C 2.2s 0.4 0.7s 0.4 0.2 1.7s 0.9s The results above show that superior results are still obtained, even though the level of hydrogen peroxide was reduced from 7% in reference, to 4% in prototype.
Claims (4)
1. An aqueous bleaching composition in the form of an emulsion comprising water and at least one hydrophilic nonionic surfactant and at least one hydrophobic nonionic surfactant wherein the difference in HLB value between the said hydrophilic surfactant and said hydrophobic surfactant is at least 1 and wherein said emulsion further comprises from 1% to 20% of benzoyl peroxide and from 1% to 10% of hydrogen peroxide or a source of from 1% to 10% hydrogen peroxide.
2. A composition according to Claim 1 wherein said source of hydrogen peroxide is hydrogen peroxide.
3. A composition according to Claim 1 which comprises from 1% to 8% by S 15 weight of the total composition of hydrogen peroxide or a source of from 1% to 8% hydrogen peroxide.
34. A composition according to Claim 3 which comprises from 1% to 10% by weight of the total composition of benzoyl peroxide. 4. A composition according to Claim 3 which comprises from about 2% to about 4% by weight of the total composition of hydrogen peroxide. 6. A composition according to Claim 1 wherein said hydrophobic nonionic surfactant has an HLB below 7. A composition of Claim 6 wherein the difference in HLB value between said hydrophobic and hydrophilic surfactant is at least 3. 8. A composition according to Claim 1 wherein said hydrophilic nonionic surfactant has an HLB above 11. EP C:\WINWORD\ELLEN\SPECIRLE\25933A.DOC 11 9. A composition of Claim 8 wherein the difference in HLB value between said hydrophilic and hydrophobic nonionic surfactant is at least 3. 10. A composition according to Claim 1 having a pH of from 1 to 6. 11. A process for the manufacture of a composition according to Claim 1 which comprises the steps of: Preparing a hydrophobic mixture comprising said hydrophobic nonionic surfactant and said benzoyl peroxide, together with other, optional, hydrophobic ingredients which are to be formulated in the composition, such as perfumes, solvents, enzymes, bleach activators and polymers; Preparing a hydrophilic mixture comprising at least said water, and said hydrophilic nonionic surfactant and possibly other, optional, hydrophilic ingredients which are to be formulated in the composition such as dyes, optical brighteners, builders, chelants, hydrogen peroxide or sources thereof and buffering agents. Wherein benzoyl peroxide is added in either said hydrophobic or 20 said hydrophilic mixtures, or said derivatives thereof are added in ':"said hydrophobic phase; Subsequently mixing said hydrophobic mixture and said hydrophilic mixture together. 12. An aqueous bleach composition according to claim 1 substantially as herein described with reference to any one of the Examples. DATED: 10 February, 1999 PHILLIPS ORMONDE FITZPATRICK Attorneys for: THE PROCTER GAMBLE COMPANY EP C:\WINWORD\ELLEN\SPECIRLE\25933A.DOC
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94870097 | 1994-06-17 | ||
EP94870097A EP0687726B1 (en) | 1994-06-17 | 1994-06-17 | Bleaching compositions |
PCT/US1995/006222 WO1995035255A1 (en) | 1994-06-17 | 1995-05-18 | Bleaching compositions |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2593395A AU2593395A (en) | 1996-01-15 |
AU706186B2 true AU706186B2 (en) | 1999-06-10 |
Family
ID=8218648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU25933/95A Ceased AU706186B2 (en) | 1994-06-17 | 1995-05-18 | Bleaching compositions |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0687726B1 (en) |
JP (1) | JPH10504584A (en) |
CN (1) | CN1049402C (en) |
AT (1) | ATE191002T1 (en) |
AU (1) | AU706186B2 (en) |
CA (1) | CA2191571A1 (en) |
DE (1) | DE69423613T2 (en) |
DK (1) | DK0687726T3 (en) |
ES (1) | ES2143538T3 (en) |
GR (1) | GR3032831T3 (en) |
MX (1) | MX9606565A (en) |
PT (1) | PT687726E (en) |
WO (1) | WO1995035255A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1010749B1 (en) * | 1995-03-27 | 2006-02-22 | The Procter & Gamble Company | Activated liquid bleaching compositions |
GB9600159D0 (en) * | 1996-01-05 | 1996-03-06 | Warwick Int Group | Process for bleaching or disinfecting a substrate |
DE19750455C1 (en) * | 1997-11-14 | 1999-04-29 | Henkel Kgaa | Aqueous hydrogen peroxide formulation used as bleach for pretreating soiled textile, especially laundry |
WO1999038481A1 (en) * | 1998-01-29 | 1999-08-05 | The Procter & Gamble Company | Method for cleaning dentures |
ES2256927T3 (en) * | 1998-11-10 | 2006-07-16 | THE PROCTER & GAMBLE COMPANY | WHITENING COMPOSITIONS. |
GB9917885D0 (en) * | 1999-07-29 | 1999-09-29 | Procter & Gamble | Method of removing plaque from a denture |
TWI400330B (en) | 2005-12-28 | 2013-07-01 | Kao Corp | Liquid detergent |
CN105209587A (en) * | 2013-05-24 | 2015-12-30 | 宝洁公司 | Low PH detergent composition comprising nonionic surfactants |
DE102014204389A1 (en) * | 2014-03-11 | 2015-09-17 | Henkel Ag & Co. Kgaa | Improved surfactant blend with optimized degree of ethoxylation |
EP3194077B1 (en) | 2014-09-18 | 2020-08-12 | Nouryon Chemicals International B.V. | Use of branched alcohols and alkoxylates thereof as secondary collectors |
RU2687665C1 (en) * | 2016-03-22 | 2019-05-15 | Акцо Нобель Кемикалз Интернэшнл Б.В. | Use of an emulsifier in a floatation agent composition |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4039475A (en) * | 1975-03-14 | 1977-08-02 | Akzona Incorporated | Stable, pumpable, aqueous suspensions of organic peroxides |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3825509A (en) * | 1972-11-13 | 1974-07-23 | Goodrich Co B F | Initiator emulsion for olefinic polymerization reactions |
US4440885A (en) * | 1980-04-02 | 1984-04-03 | Ppg Industries, Inc. | Peroxide emulsions and sizing composition containing same |
US4401835A (en) * | 1981-09-17 | 1983-08-30 | Warner-Lambert Company | Method for preparing small sized benzoyl peroxide crystals |
US4552682A (en) * | 1982-09-30 | 1985-11-12 | Ppg Industries, Inc. | Peroxide composition containing phenolic antioxidant |
JPS6251666A (en) * | 1985-08-29 | 1987-03-06 | Nippon Oil & Fats Co Ltd | Dibenzoyl peroxide-containing composition |
JPH01190666A (en) * | 1988-01-25 | 1989-07-31 | Nippon Oil & Fats Co Ltd | Aqueous suspension of dibenzoyl peroxide |
TW291496B (en) * | 1991-02-01 | 1996-11-21 | Hoechst Ag | |
GB2272450A (en) * | 1992-11-13 | 1994-05-18 | Albright & Wilson | Aqueous surfactant VI phase compositions |
US5409632A (en) * | 1992-11-16 | 1995-04-25 | The Procter & Gamble Company | Cleaning and bleaching composition with amidoperoxyacid |
EP0598692A1 (en) * | 1992-11-16 | 1994-05-25 | The Procter & Gamble Company | Pseudoplastic and thixotropic cleaning compositions |
EP0598170B1 (en) * | 1992-11-16 | 1998-02-04 | The Procter & Gamble Company | Cleaning and bleaching compositions |
EP0598973A1 (en) * | 1992-11-26 | 1994-06-01 | The Procter & Gamble Company | Multi-purpose liquid cleaning composition |
-
1994
- 1994-06-17 DE DE69423613T patent/DE69423613T2/en not_active Expired - Fee Related
- 1994-06-17 DK DK94870097T patent/DK0687726T3/en active
- 1994-06-17 AT AT94870097T patent/ATE191002T1/en not_active IP Right Cessation
- 1994-06-17 EP EP94870097A patent/EP0687726B1/en not_active Expired - Lifetime
- 1994-06-17 ES ES94870097T patent/ES2143538T3/en not_active Expired - Lifetime
- 1994-06-17 PT PT94870097T patent/PT687726E/en unknown
-
1995
- 1995-05-18 AU AU25933/95A patent/AU706186B2/en not_active Ceased
- 1995-05-18 WO PCT/US1995/006222 patent/WO1995035255A1/en active Application Filing
- 1995-05-18 CN CN95193652A patent/CN1049402C/en not_active Expired - Fee Related
- 1995-05-18 CA CA002191571A patent/CA2191571A1/en not_active Abandoned
- 1995-05-18 JP JP8502165A patent/JPH10504584A/en active Pending
- 1995-05-18 MX MX9606565A patent/MX9606565A/en unknown
-
2000
- 2000-03-23 GR GR20000400511T patent/GR3032831T3/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4039475A (en) * | 1975-03-14 | 1977-08-02 | Akzona Incorporated | Stable, pumpable, aqueous suspensions of organic peroxides |
Also Published As
Publication number | Publication date |
---|---|
PT687726E (en) | 2000-09-29 |
ATE191002T1 (en) | 2000-04-15 |
CN1151149A (en) | 1997-06-04 |
GR3032831T3 (en) | 2000-06-30 |
WO1995035255A1 (en) | 1995-12-28 |
CA2191571A1 (en) | 1995-12-28 |
EP0687726A1 (en) | 1995-12-20 |
CN1049402C (en) | 2000-02-16 |
DK0687726T3 (en) | 2000-07-03 |
ES2143538T3 (en) | 2000-05-16 |
DE69423613T2 (en) | 2000-11-02 |
DE69423613D1 (en) | 2000-04-27 |
EP0687726B1 (en) | 2000-03-22 |
JPH10504584A (en) | 1998-05-06 |
AU2593395A (en) | 1996-01-15 |
MX9606565A (en) | 1997-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU683858B2 (en) | Aqueous cleaning and bleaching composition containing hydrophobic liquid, H2O2 and two nonionic surfactants with different HLBS | |
RU2154702C2 (en) | Activated liquid bleaching compositions | |
US5409632A (en) | Cleaning and bleaching composition with amidoperoxyacid | |
EP0686691B1 (en) | Aqueous emulsions with brighteners | |
JPH11501576A (en) | Stable emulsion containing hydrophobic liquid components | |
AU706186B2 (en) | Bleaching compositions | |
EP0598693B1 (en) | Stable aqueous emulsions of nonionic surfactants with a viscosity controlling agent | |
US5880079A (en) | Bleaching compositions | |
WO1995002667A1 (en) | Stable aqueous emulsions of nonionic surfactants with a viscosity controlling agent | |
EP0687727B1 (en) | Bleaching compositions based on mixtures of cationic and nonionic surfactants | |
US6028045A (en) | Stable strongly acidic aqueous compositions containing persulfate salts | |
EP0672748B1 (en) | Stable strongly acidic aqueous compositions containing persulfate salts | |
JP3410880B2 (en) | Liquid bleach composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |