IE930263A1 - Acidic activated bleaching composition - Google Patents
Acidic activated bleaching compositionInfo
- Publication number
- IE930263A1 IE930263A1 IE930263A IE930263A IE930263A1 IE 930263 A1 IE930263 A1 IE 930263A1 IE 930263 A IE930263 A IE 930263A IE 930263 A IE930263 A IE 930263A IE 930263 A1 IE930263 A1 IE 930263A1
- Authority
- IE
- Ireland
- Prior art keywords
- composition according
- hydrogen peroxide
- composition
- compositions
- organic peracid
- Prior art date
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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
- C11D3/3905—Bleach activators or bleach catalysts
- C11D3/3907—Organic compounds
- C11D3/391—Oxygen-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (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)
- Detergent Compositions (AREA)
- Cosmetics (AREA)
Abstract
Aqueous bleaching compositions are disclosed which comprise hydrogen peroxide as well as an organic peracid precursor selected from a specific class of glycol and glycerin esters. The compositions have a pH in the range of from about 3.5 to about 6. The disclosed compositions are both physically and chemically stable.
Description
AwucanoN no_____ .
»
Acidic activated bleaching composition
Technical field
The present invention relates to bleaching compositions, mainly for use in laundry applications. The compositions according to the present invention, which comprise hydrogen peroxide as well as peracid precursors, are stable upon storage.
Background
Bleaching compositions using hydrogen peroxide have been extensively described in the art. Such hydrogen peroxide bleaches have an advantage over chlorine bleaches in that they are environmentally more compatible. Another advantage is that they are milder bleaches. This latter advantage is especially
930283 significant in laundry applications as hydrogen peroxide bleaches are safer to fabrics.
A major drawback of hydrogen peroxide bleaches is that they are less active than chlorine bleaches at low temperatures which are often encountered in modern laundering applications. Thus, hydrogen peroxide bleach activators have been developed and have been extensively described in the art. These activators are mainly transition metals or peracid precursors.
Peracid precursors react with hydrogen peroxide to yield peracids. Peracids are the activated bleaching compounds which are efficient at low temperatures.
A problem which occurs in the formulation of such activated hydrogen peroxide bleaching compositions is the difficulty to obtain a composition which is both chemically and physically stable. Indeed, such compositions of the prior art are either turbid suspensions of insoluble activators with good chemical stability, or clear compositions with poor chemical stability which causes significant and undesired oxygen release.
It has now been found that this problem could be addressed by formulating a bleaching composition comprising hydrogen peroxide, an organic peracid precursor selected from a specific class, e.g. , glycol and glycerin esters, and by formulating said composition in a narrow, acidic pH range. The mildly acidic pH range allows for adequate chemical stability of both the hydrogen peroxide and the organic peracid precursor. The activation of hydrogen peroxide trough the formation of a peracid is enhanced by the pH raise which occurs upon dilution in the wash water, especially when a detergent composition bringing further alkalinity is also present in the wash water.
Glycol esters have been often described as solvents in detergent and bleaching compositions. Such compositions are described for instance in US 3 956 159. These compositions have a pH of 6.5 and above.
J 62252500 (abstract) discloses bleaching compositions which comprise a bleach activator, including triacetin. These compositions are formulated at neutral or weakly basic pH.
Bleaching compositions for various applications, comprising triacetin are also disclosed in J62001792, J62001794 J 62001796, and J61042600 (abstracts).
Summary of the invention
The compositions according to the present invention are clear aqueous bleaching compositions comprising hydrogen peroxide as well as an organic peracid precursor, characterized in that the compositions have a pH in the range of from about 3.5 to about 6, and that the organic peracid precursor is a compound according to the formula:
CH2ri
CH *2
CH2
R3 x
wherein x is 0 or 1, Rlf R2, R3 are independently selected from -H, -OH, -C-0-R4 or -0-C-R4 where R4 is II 11
0 cl-c4 alkyl# with the proviso that at least two of Rj, R2 or R3 are -O-C-R4; or mixtures thereof.
O
Detailed description of the invention
The compositions according to the present invention are clear aqueous liquid compositions which comprise hydrogen peroxide. Preferably, the compositions according to the present invention comprise from about 0.5 % to about 20 % by weight of the total composition of hydrogen peroxide, more preferably from about 2 % to about 15 %, most preferably from about 4 % to about 9%.
The compositions further comprise according to the according to the present invention a specific organic peracid precursor formula:
CH2
CH
CH2
R3 wherein x is 0 or 1, Rlf R2, R3 are independently selected from -H, -OH, -C-0-R4 or -0-C-R4 where R4 is ll 4 ll
0 cl-c4 alkyl, with the proviso that at least two of Rlf R2 or R3 are -0-C-R4; or mixtures thereof. All these .930263 compounds are well known chemicals which are commercially available or can be synthesized according to the chemical literature.
Preferred such peracid precursors for use in the compositions according to the present invention are selected from ethylene glycol diesters, triacetin and diacetin, or mixtures thereof. Particularly preferred compounds are triacetin and ethylene glycol diacetate. Tributyrin also displays excellent stability in the compositions according to the present invention but is less preferred because it is less soluble in the compositions according to the present invention.
The compositions according to the present invention typically comprise from about 1 % to about 15 % by weight of the total composition of such an organic peracid precursor, or mixtures thereof. The desired amount of organic peracid precursor can also be defined in relation to the amount of hydrogen peroxide in the composition. Accordingly, the compositions according to the present invention preferably comprise from about 0.1 to about 2 moles of organic peracid precursor per mole of hydrogen peroxide.
The compositions according to the present invention have a pH in the range of from about 3.5 to about 6, most preferably from about 3.5 to about 5, most preferably about 4. The pH of the composition can be adjusted and buffered with such chemicals as organic and inorganic acids which are stable to oxidation, citric acid, sulphuric acid, sodium hydroxide, ammonia and amines. Preferred buffer for use in the compositions according to the present invention is citric acid. It is essential that the pH of the composition remains within the above range as said range is critical to ensure adequate chemical stability of the hydrogen peroxide and of .the specific organic peracid precursors used in the compositions according to the present invention.
The compositions according to the present invention may comprise surfactants. Preferred surfactants for use herein are well known anionic surfactants such as alkyl benzene sulphonates and alkyl sulfates, and/or nonionic surfactants such as ethoxylated and/or propoxylated alcohols. All surfactants for use herein must be resistant to oxidation by peracids and hydrogen peroxide, and are preferably water-soluble. The compositions according to the present invention can comprise from 0% to about 30% by weight of the total composition of surfactants, preferably from about 0.5 % to about 15 %, most preferably from about 2 % to 8 %.
The compositions according to the present invention may further comprise peroxide stabilizers such as stannates, 8-hydroxyquinoline, pyrophosphates and phosphonates. Chelating agents may also be useful in the context of the present invention; suitable chelants include EDTA, NTA and DETPA, picolinic and dipicolinic acids and amino polyphosphonates, although some of these are poorly environmentally compatible. Radical scavengers can also be used herein, such as butylated hydroxy toluene and other hindered hydroxy benzenes, or sodium benzoate. Butylated hydroxy toluene is a highly preferred ingredient as it has been observed that it
Ί stabilizes the peracid precursors according to the present invention, as well as hydrogen peroxide.
The compositions according to the present invention can also comprise such optional ingredients as whitening agents, dyes, builders, thickeners, hydrotropes, perfumes, all of which need to be compatible with the mildly acidic pH and the oxidizing environment of the compositions according to the present invention.
The compositions according to the present invention are further illustrated in the following examples.
Examples
The following compositions are made by mixing together the listed ingredients in the listed proportions.
Ingredients: % by weight: I II III IV Hydrogen peroxide 6.0 6.0 6.0 6.0 Na alkyl sulphate 2.8 2.8 2.8 2.8 Triacetin 4.0 5.0 4.0 4.0 Citric acid 1.0 1.0 1.0 1.0 Na Stannate 0.0015 0.0010 0.0015 0.0015 Na hydroxide pH 4 pH 4 pH 3 .5 pH 5 Water & minors up to 100 %
930283
Ingredients: % by weight: V VI VII VIII Hydrogen peroxide 6.0 8.0 3.5 5.0 Na alkyl sulphate 2.8 2.0 4.0 3.5 Triacetin - 3.0 5.0 - Ethylene glycol diacetate 4.0 - - 5.0 Citric acid 1.0 1.0 1.0 1.0 Na stannate 0.0015 0.0015 0.0010 0.0015 Na hydroxide pH 4 pH 4 pH 4 pH 4 Water & minors up to 100 %
Claims (12)
1. An aqueous bleaching composition comprising hydrogen peroxide and an organic peracid precursor, characterized in that the compositions have a pH in the range of from about 3.5 to about 6, and that the organic peracid precursor is a compound according to the formula: CH -|_CH 2 CHRi *3 wherein x is 0 or 1, R lf R 2 , R3 are independently selected from -H, -OH, -C-O-R4 or -0-C-R4 where R4 II 1( 0 0 is Cj-04 alkyl, with the proviso that at least two of Rl, R 2 or R 3 are -0-C-R4; or mixtures thereof.
2. A composition according to claim 1 which has a pH in the range of from about 3.5 to about 5.
3. A composition according to claim 2 which has a pH of about 4.
4. A composition according to any of the preceding claims wherein the organic peracid precursor is selected from ethylene glycol diesters, triacetin, diacetin, or mixtures thereof.
5. A composition according to claim 4 wherein the organic peracid precursor is selected from triacetin and ethylene glycol diacetate.
6. A composition according to any of the preceding claims which comprises from about 0.5 % to about 20 % by weight of the total composition of hydrogen peroxide.
7. A composition according to any of the preceding claims which comprises from about 1 % to about 15 % by weight of the total composition of said organic peracid precursor.
8. A composition according to claim 6 which comprises from about 0.1 to about 2 moles of said organic peracid precursor per mole of hydrogen peroxide.
9. A composition according to any of the preceding claims which comprises from about 0.5 % to about 15 % by weight of the total composition of a surfactant.
10. A composition according to any of the preceding claims which comprises citric acid.
11. A composition according to any of the preceding claims which comprises butylated hydroxy toluene.
12. An aqueous bleaching composition as claimed in claim 1, substantially as hereinbefore described and exemplified.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19920200961 EP0563460B1 (en) | 1992-04-03 | 1992-04-03 | Acidic activated bleaching composition |
Publications (1)
Publication Number | Publication Date |
---|---|
IE930263A1 true IE930263A1 (en) | 1993-10-06 |
Family
ID=8210529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE930263A IE930263A1 (en) | 1992-04-03 | 1993-04-02 | Acidic activated bleaching composition |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0563460B1 (en) |
JP (1) | JPH07505437A (en) |
CN (1) | CN1078254A (en) |
AU (1) | AU668936B2 (en) |
BR (1) | BR9306183A (en) |
DE (1) | DE69226072T2 (en) |
ES (1) | ES2118105T3 (en) |
IE (1) | IE930263A1 (en) |
TW (1) | TW299351B (en) |
WO (1) | WO1993020167A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5753138A (en) * | 1993-06-24 | 1998-05-19 | The Procter & Gamble Company | Bleaching detergent compositions comprising bleach activators effective at low perhydroxyl concentrations |
CA2168769C (en) * | 1993-08-03 | 1999-12-28 | Axel Koenig | A process of cleaning carpets using active oxygen compounds in an acidic aqueous medium |
GB9600159D0 (en) * | 1996-01-05 | 1996-03-06 | Warwick Int Group | Process for bleaching or disinfecting a substrate |
US5879409A (en) * | 1996-02-23 | 1999-03-09 | The Procter & Gamble Company | Bleach additive and bleaching compositions having glycine anhydride activators |
US6221341B1 (en) * | 1997-11-19 | 2001-04-24 | Oraceutical Llc | Tooth whitening compositions |
US7919122B2 (en) | 2003-04-02 | 2011-04-05 | Kao Corporation | Composition for production of a sterilizer and a process for producing organic peracid |
ES2306838T3 (en) * | 2003-07-08 | 2008-11-16 | THE PROCTER & GAMBLE COMPANY | LIQUID ACTIVATING COMPOSITION. |
EP2331668A1 (en) * | 2008-09-10 | 2011-06-15 | Danisco US Inc. | Enzymatic textile bleaching compositions and methods of use thereof |
US8546449B2 (en) | 2011-03-24 | 2013-10-01 | Enviro Tech Chemical Services, Inc. | Methods and compositions for the generation of peracetic acid on site at the point-of-use |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3956159A (en) * | 1974-11-25 | 1976-05-11 | The Procter & Gamble Company | Stable concentrated liquid peroxygen bleach composition |
DE3465334D1 (en) * | 1983-04-14 | 1987-09-17 | Interox Chemicals Ltd | Peroxygen compounds |
JPS6142600A (en) * | 1984-08-06 | 1986-03-01 | 花王株式会社 | Fungicidal composition |
JPS621792A (en) * | 1985-06-28 | 1987-01-07 | 花王株式会社 | Bleaching composition |
JPS621794A (en) * | 1985-06-28 | 1987-01-07 | 花王株式会社 | Bleaching composition |
JPS621796A (en) * | 1985-06-28 | 1987-01-07 | 花王株式会社 | Bleaching composition |
JPS62252500A (en) * | 1986-04-25 | 1987-11-04 | 花王株式会社 | Bleaching composition |
US5047168A (en) * | 1988-01-21 | 1991-09-10 | Colgate-Palmolive Co. | Sugar ethers as bleach stable detergency boosters |
US4800038A (en) * | 1988-01-21 | 1989-01-24 | Colgate-Palmolive Company | Acetylated sugar ethers as bleach activators detergency boosters and fabric softeners |
US5151212A (en) * | 1990-03-21 | 1992-09-29 | The Belzak Corporation | Peroxygen compound activation |
-
1992
- 1992-04-03 EP EP19920200961 patent/EP0563460B1/en not_active Expired - Lifetime
- 1992-04-03 DE DE1992626072 patent/DE69226072T2/en not_active Expired - Fee Related
- 1992-04-03 ES ES92200961T patent/ES2118105T3/en not_active Expired - Lifetime
-
1993
- 1993-03-29 WO PCT/US1993/002944 patent/WO1993020167A1/en active Application Filing
- 1993-03-29 BR BR9306183A patent/BR9306183A/en not_active Application Discontinuation
- 1993-03-29 AU AU39399/93A patent/AU668936B2/en not_active Ceased
- 1993-03-29 JP JP5517617A patent/JPH07505437A/en active Pending
- 1993-04-02 IE IE930263A patent/IE930263A1/en not_active IP Right Cessation
- 1993-04-03 CN CN 93105485 patent/CN1078254A/en active Pending
- 1993-05-03 TW TW82103446A patent/TW299351B/zh active
Also Published As
Publication number | Publication date |
---|---|
EP0563460B1 (en) | 1998-07-01 |
CN1078254A (en) | 1993-11-10 |
BR9306183A (en) | 1998-06-23 |
WO1993020167A1 (en) | 1993-10-14 |
EP0563460A1 (en) | 1993-10-06 |
JPH07505437A (en) | 1995-06-15 |
DE69226072T2 (en) | 1999-02-25 |
TW299351B (en) | 1997-03-01 |
DE69226072D1 (en) | 1998-08-06 |
AU3939993A (en) | 1993-11-08 |
AU668936B2 (en) | 1996-05-23 |
ES2118105T3 (en) | 1998-09-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0598694B1 (en) | Stable compositions with persulfate salts | |
AU594419B2 (en) | Liquid hydrogen peroxide/peracid precursors bleach | |
EP0624154B1 (en) | Acylated citrate esters as peracid precursors | |
US5391324A (en) | Aqueous suspensions of peroxycarboxylic acids | |
US5904734A (en) | Method for bleaching a hard surface using tungsten activated peroxide | |
US5039447A (en) | Pourable sulfone peracid compositions | |
FI89721B (en) | FLYTANDE TVAETTMEDELKOMPOSITION INNEHAOLLANDE FAST PEROXIBLEKNINGSMEDEL | |
FI90786C (en) | Liquid detergent composition containing perborate bleach | |
US5419847A (en) | Translucent, isotropic aqueous liquid bleach composition | |
US4783278A (en) | Concentrated liquid compositions containing a peroxygen compound | |
US4199466A (en) | Activated bleaching process and compositions therefor | |
JPH0317197A (en) | Activated bleaching and bleaching compounds | |
JPH03200899A (en) | Liquid detergent compound containing stabilized bleach- ing agent | |
EP0563460B1 (en) | Acidic activated bleaching composition | |
JP2662712B2 (en) | Concentrated acidic liquid composition with amine fluorescent whitening agent useful as bleach vehicle | |
JPS601920B2 (en) | Bleaching and cleaning compositions | |
US4822510A (en) | Stably suspended 4,4'-sulfonylbisperoxybenzoic acid bleach in an aqueous liquid | |
CA1289302C (en) | Bleaching composition | |
JPH03210399A (en) | Chlorine-free liquid compound for automatic dish washer | |
JPH0625700A (en) | Peroxy bleaching agent composition | |
US2362401A (en) | Detergent compositions | |
EP1038947A2 (en) | Cleaning formulation | |
US5047577A (en) | Quaternary ammonium compounds | |
US5914304A (en) | Bleaching compositions | |
CA2069937A1 (en) | Concentrated aqueous liquid bleach compositions |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM9A | Patent lapsed through non-payment of renewal fee |