EP0427314B2 - Bleaching composition - Google Patents
Bleaching composition Download PDFInfo
- Publication number
- EP0427314B2 EP0427314B2 EP90202851A EP90202851A EP0427314B2 EP 0427314 B2 EP0427314 B2 EP 0427314B2 EP 90202851 A EP90202851 A EP 90202851A EP 90202851 A EP90202851 A EP 90202851A EP 0427314 B2 EP0427314 B2 EP 0427314B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- sodium
- bleach
- bleaching composition
- component
- 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.)
- Expired - Lifetime
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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/10—Carbonates ; Bicarbonates
-
- 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
-
- 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
- C11D3/3942—Inorganic per-compounds
Definitions
- This invention relates to a bleaching composition
- a bleaching composition comprising essentially sodium percarbonate as the persalt and a bleach activator for said persalt, which composition can be used, as desired, for admixing with a detergent composition or, preferably, as a bleach additive to a wash liquor for improving the bleaching action of said wash liquor during the wash, particularly in the lower temperature region of from about 20 °C to 60 °C.
- bleach activator refers to the broad class of reactive organic compounds which in alkaline solutions containing a source of hydrogen peroxide, e.g. a persalt, will generate the corresponding peroxyacid, which, unlike the persalt or hydrogen peroxide, is an effective oxidising bleach at low temperatures.
- peroxyacid bleach precursors of which N,N,N',N'-tetraacetyl ethylene diamine (TAED), tetraacetyl glycoluril (TAGU), sodium acetoxybenzene sulphonate (SABS), sodium nonanoyloxybenzene sulphonate (SNOBS) and sodium benzoyloxybenzene sulphonate (SBOBS) are only a few typical examples in addition to the many other bleach precursor compounds described in literature, for example US Patents 1,246,339; 3,332,882; 4,128,494; 4,412,934; 4,675,393 and 4,751,015; GB Patent 1,382,594; EP-A-0185553, EP-A-170386, EP-A-0174132; EP-A-0120591; EP-A-0284292; EP-A-0303520; EP-A-0331229 and EP-A-0332294.
- TAED N,N,N',N'-
- Sodium perborate mono- or tetrahydrate is currently the most widely used persalt bleaching agent in and with laundry detergent compositions.
- Bleaching compositions for use as a bleach additive comprising essentially sodium perborate mono- or tetrahydrate, TAED and urea have also been proposed and described in EP-A-0268170. These compositions containing sodium perborate are relatively stable and relatively easy to formulate.
- Sodium perborate is a boron compound, which has been criticized on environmental grounds.
- the invention makes use of the more environmentally acceptable persalt sodium carbonate perhydrate (Na 2 CO 3 .1 1 / 2H 2 O 2 ), commonly known as sodium percarbonate.
- sodium percarbonate instead of sodium perborate, however, cannot be a matter of simple substitution.
- sodium percarbonate is substantially less stable.
- Japanese Patent Application N° 54-163906 discloses a detergent bleach composition comprising 20% by weight of sodium percarbonate, 40% by weight of heat-treated sodium bicarbonate and 3% by weight of a bleach activator.
- a detergent bleach composition comprising 20% by weight of sodium percarbonate, 40% by weight of heat-treated sodium bicarbonate and 3% by weight of a bleach activator.
- the sodium percarbonate used must have been subjected to a heat treatment at a temperature of about 70°C-110°C for 10-120 minutes, and that 2) the composition should contain a substantial amount of an acidic compound selected from succinic acid, citric acid and maleic acid.
- compositions containing higher levels of sodium percarbonate and a bleach activator Another important aspect of stability problems encountered with compositions containing higher levels of sodium percarbonate and a bleach activator is that which relates to the self-heating risk in factory handling, particularly if the product gets warm.
- a stable bleaching composition comprising a persalt and a bleach activator, characterised in that it consists of:
- the sodium percarbonate used in the present invention need not have been subjected to a heat treatment.
- the great advantage of the present invention is that a satisfactorily stable bleaching composition can be formulated with untreated, substantially unstabilised sodium percarbonate as manufactured.
- compositions are therefore free of succinic acid, citric acid or maleic acid.
- the alkali metal salts used as component (c) are preferably the sodium salts, i.e. sodium bicarbonate, sodium sesquicarbonate and sodium dihydrogen orthophosphate (NaH 2 PO 4 .2H 2 O), the sodium bi- or sesquicarbonates being particularly preferred as being non-phosphorus.
- the presence of sodium bicarbonate does not appear to influence the bleaching performance of the composition to any significant extent over the dosage range of interest, except for the dilution effect.
- unclaimed bleaching compositions may additionally contain sodium carbonate, as partial replacement for sodium bicarbonate. It has been found that sodium carbonate used at a level up to equal the amount of sodium bicarbonate does not affect the stability properties of unclaimed compositions.
- the composition of the invention may further contain minor amounts of any known ingredients normally used in detergent or bleach compositions up to a level of about 10%, preferably not more than 5% by weight as desired, so long as their presence does not affect the stability properties of the composition.
- the bleach activator is the bleach activator
- any bleach activator from the broad class of peroxyacid bleach precursors can be used in the composition of the invention.
- One preferred bleach activator is TAED because it is relatively harmless and is commercially available.
- Other preferred bleach activators are SNOBS; SBOBS; the quaternary ammonium-substituted peroxyacid bleach precursors as described in US Patent 4,751,015, EP-A-0331229, EP-A-0284292 and EP-A-303,520; and 2-methyl-4H,3,1-benzoxazin-4-one as described in EP-A-0332294, because of their high technical performances.
- activators can be used in their normal crystalline forms or, preferably, in the form of agglomerates or granulated particles having a particle size from 0.2 to 2.0 mm made from fine crystalline peroxyacid bleach precursor material of a particle size preferably below 150 ⁇ m. If the bleach activator is used in the unprotected crystalline form, which is possible under very dry conditions, it should preferably be present as coarse crystals having a size of not less than 0.2 mm. Still, agglomerates or granulated particles of bleach activators are the preferred forms for use in the present invention. They minimise direct contact between the sodium percarbonate and the bleach activator, thereby preventing undue perhydrolysis reactions from occuring during storage.
- bleach activator granules as described in EP-A-0240057 and EP-A-0241962 are very suitable for use in the present invention.
- Any grade of sodium percarbonate can be used without any prior treatment being necessary, but a coarse grade is also preferable here.
- a highly suitable percarbonate grade is that of which at least 60% by weight has a particle diameter larger than 250 ⁇ m.
- Other components used in the compositions will preferably also be of similar coarse grades.
- the bleaching composition of the invention can be prepared by simple mixing of the dry ingredients in any suitable mixing equipment.
- the following bleach compositions were prepared by dry mixing sodium percarbonate, TAED granules * and coarse sodium bicarbonate (mean particle size > 125 ⁇ m).
- the compositions in thermos-flasks were put in an oven at 100 °C for about 24 hours, wherein the temperature of the compositions is monitored.
- the results of this test which was designed to assess the self-heating risk, are shown in the following Table :
- TAED granule composition : % by weight TAED 83.0
- compositions of the invention show relatively low rates of temperature rise as compared with the compositions outside the invention showing relatively high to very high rates of temperature rise, which is indicative of the excellent stability of the compositions of the invention in contrast with the compositions outside the invention showing high to very high rate of exothermic decomposition.
- compositions 1) within the invention show superior stability of composition 1) within the invention as compared with compositions 2) to 7) outside the invention.
- This Example demonstrates the effectiveness of a bleach additive according to the invention in a washing system using a main wash powder and a builder additive.
- the bleach additive had the following formulation : Sodium percarbonate 52.5% by weight Sodium bicarbonate 29.0% by weight TAED granules (83% wt active) 17.5% by weight Blue speckles (of main wash powder) 1.0% by weight 100.0% by weight
- This Example demonstrates the benefit for the use of a bleach additive according to the invention in a washing process over washing with commercial bleaching detergent compositions.
- Pre-wash Main wash powder (Example III) 55 g Builder additive (Example III) 20 g Main wash Main wash powder (Example III) 100 g Builder additive (Example III) 20 g Bleach additive (Example III) 45 g
- No pre-wash Main wash Commercial bleaching detergent powder A containing sodium perborate + TAED 210 g
- Pre-wash Commercial bleaching detergent powder B containing sodium perborate + TAED 112 g
- Main wash Commercial bleaching detergent powder B containing sodium perborate + TAED 140 g
- Test cloth 3 non-clotting blood on cotton
- Test cloth 4 blood/milk/ink on cotton
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8925285 | 1989-11-09 | ||
GB898925285A GB8925285D0 (en) | 1989-11-09 | 1989-11-09 | Bleaching composition |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0427314A2 EP0427314A2 (en) | 1991-05-15 |
EP0427314A3 EP0427314A3 (en) | 1991-10-23 |
EP0427314B1 EP0427314B1 (en) | 1995-12-20 |
EP0427314B2 true EP0427314B2 (en) | 2004-06-16 |
Family
ID=10665977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90202851A Expired - Lifetime EP0427314B2 (en) | 1989-11-09 | 1990-10-25 | Bleaching composition |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0427314B2 (es) |
JP (1) | JPH08919B2 (es) |
AU (1) | AU635577B2 (es) |
BR (1) | BR9005662A (es) |
CA (1) | CA2029262C (es) |
DE (1) | DE69024334T3 (es) |
ES (1) | ES2081342T5 (es) |
GB (1) | GB8925285D0 (es) |
IN (1) | IN171327B (es) |
ZA (1) | ZA908967B (es) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4038391A1 (de) * | 1990-12-01 | 1992-06-04 | Henkel Kgaa | Stabilisierung von percarbonat |
EP0634483B1 (en) * | 1993-07-14 | 2000-09-13 | The Procter & Gamble Company | Stabilised bleaching compositions |
SE508954C2 (sv) | 1997-03-21 | 1998-11-16 | Eriksson Jan Olof | Rengöringsmedel, fritt från tensider |
EP1064845B1 (en) * | 1999-06-30 | 2003-09-10 | Kao Corporation | Virucidal and sporicidal composition |
DE102006026039A1 (de) | 2005-10-07 | 2007-04-19 | Söll Gmbh | Zusammensetzung zur Vernichtung von Fadenalgen |
EP2157162A1 (en) * | 2008-08-13 | 2010-02-24 | The Procter and Gamble Company | Particulate bleaching composition comprising enzymes |
EP2447350A1 (en) * | 2010-10-29 | 2012-05-02 | The Procter & Gamble Company | Bleach coparticle |
MX350446B (es) * | 2013-09-30 | 2017-09-07 | Chemlink Laboratories Llc | Composiciones antimicrobianas ambientalmente preferidas. |
DE102014218950A1 (de) | 2014-09-19 | 2016-03-24 | Henkel Ag & Co. Kgaa | Festförmige Zusammensetzung für die Textilbehandlung |
CR20230492A (es) | 2021-04-01 | 2023-11-23 | Sterilex LLC | Desinfectante/sanitizante en polvo sin quats |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3671439A (en) * | 1969-07-22 | 1972-06-20 | American Home Prod | Oxygen bleach-activator systems stabilized with puffed borax |
JPS5313354B2 (es) * | 1974-03-06 | 1978-05-09 | ||
JPS54163906A (en) * | 1978-06-16 | 1979-12-27 | Kao Corp | Foamable bleachable detergent composition |
PH15686A (en) * | 1979-03-06 | 1983-03-11 | Unilever Nv | Detergent compositions |
CH659082A5 (en) * | 1984-04-09 | 1986-12-31 | Ciba Geigy Ag | Detergent powder additives in the form of speckles |
JPS60260699A (ja) * | 1984-06-07 | 1985-12-23 | 栗田工業株式会社 | 銅材質を含む配管用洗浄剤組成物 |
ES2000190A4 (es) * | 1986-01-21 | 1988-01-01 | Pennwalt Corp | Detergente textil mejorado. |
JPH0668116B2 (ja) * | 1986-07-14 | 1994-08-31 | 花王株式会社 | 洗浄漂白剤組成物 |
-
1989
- 1989-11-09 GB GB898925285A patent/GB8925285D0/en active Pending
-
1990
- 1990-10-25 ES ES90202851T patent/ES2081342T5/es not_active Expired - Lifetime
- 1990-10-25 EP EP90202851A patent/EP0427314B2/en not_active Expired - Lifetime
- 1990-10-25 DE DE69024334T patent/DE69024334T3/de not_active Expired - Lifetime
- 1990-11-02 CA CA002029262A patent/CA2029262C/en not_active Expired - Fee Related
- 1990-11-02 JP JP2298768A patent/JPH08919B2/ja not_active Expired - Lifetime
- 1990-11-07 AU AU65852/90A patent/AU635577B2/en not_active Ceased
- 1990-11-08 ZA ZA908967A patent/ZA908967B/xx unknown
- 1990-11-08 BR BR909005662A patent/BR9005662A/pt not_active IP Right Cessation
- 1990-11-08 IN IN288/BOM/90A patent/IN171327B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0427314A2 (en) | 1991-05-15 |
DE69024334D1 (de) | 1996-02-01 |
ES2081342T5 (es) | 2005-02-16 |
DE69024334T2 (de) | 1996-05-09 |
JPH08919B2 (ja) | 1996-01-10 |
AU6585290A (en) | 1991-05-16 |
EP0427314B1 (en) | 1995-12-20 |
AU635577B2 (en) | 1993-03-25 |
GB8925285D0 (en) | 1989-12-28 |
IN171327B (es) | 1992-09-19 |
JPH03223400A (ja) | 1991-10-02 |
BR9005662A (pt) | 1991-09-17 |
EP0427314A3 (en) | 1991-10-23 |
CA2029262C (en) | 1996-11-12 |
ES2081342T3 (es) | 1996-03-01 |
CA2029262A1 (en) | 1991-05-10 |
ZA908967B (en) | 1992-07-29 |
DE69024334T3 (de) | 2004-10-21 |
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