EP0427314B2 - Composition de blanchiment - Google Patents

Composition de blanchiment Download PDF

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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
Application number
EP90202851A
Other languages
German (de)
English (en)
Other versions
EP0427314A2 (fr
EP0427314B1 (fr
EP0427314A3 (en
Inventor
Alan Don Unilever Research Lab. Barber
Stuart Albert Unilever Research Lab. Emmons
Alan John Unilever Research Lab. Fry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP0427314A2 publication Critical patent/EP0427314A2/fr
Publication of EP0427314A3 publication Critical patent/EP0427314A3/en
Publication of EP0427314B1 publication Critical patent/EP0427314B1/fr
Application granted granted Critical
Publication of EP0427314B2 publication Critical patent/EP0427314B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

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  • 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)

Claims (5)

  1. Composition de blanchissement stable, comportant un persel et un activateur de blanchiment caractérisée en ce qu'elle est constituée :
    (a) de 10 à 90 % de percarbonate de sodium ;
    (b) de 4 % à 40 % en poids d'un activateur de blanchiment ;
    (c) de 5 % à 85 % en poids d'un bicarbonate de métal alcalin, d'un sesquicarbonate de métal alcalin ou d'un dihydrogéno-orthophosphate de métal alcalin ; et
    (d) facultativement jusqu'à 10 % en poids d'ingrédients habituellement utilisés dans des compositions détergentes ou de blanchiment, pour autant que leur présence n'affecte pas les propriétés de stabilité de la composition, dans laquelle si (c) est du bicarbonate de sodium, alors ces ingrédients peuvent ne pas comporter de carbonate de sodium,
       dans laquelle le rapport en poids entre les composants (a) à (b) n'est pas inférieur à 4:5 tandis que le rapport en poids entre les composants (c) à (b) n'est pas inférieur à 5 :4, sous la condition que, si le composant (b) est présent selon un taux de plus de 8 %, la quantité de composant (c) devra être d'au moins 20 %.
  2. Composition de blanchiment selon la revendication 1, caractérisée en ce que le percarbonate de sodium n'a pas été soumis à un traitement thermique.
  3. Composition de blanchiment selon la revendication 1 ou 2, caractérisée en ce que la composition est exempte d'acide succinique, d'acide citrique et d'acide maléique.
  4. Composition de blanchiment selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'activateur de blanchiment est un précurseur de blanchiment de type peroxyacide.
  5. Composition de blanchiment selon la revendication 4, caractérisé en ce que ledit précurseur de blanchiment de type peroxyacide est la N,N,N',N'-tétra-acétyl-éthylène diamine (TAED).
EP90202851A 1989-11-09 1990-10-25 Composition de blanchiment Expired - Lifetime EP0427314B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898925285A GB8925285D0 (en) 1989-11-09 1989-11-09 Bleaching composition
GB8925285 1989-11-09

Publications (4)

Publication Number Publication Date
EP0427314A2 EP0427314A2 (fr) 1991-05-15
EP0427314A3 EP0427314A3 (en) 1991-10-23
EP0427314B1 EP0427314B1 (fr) 1995-12-20
EP0427314B2 true EP0427314B2 (fr) 2004-06-16

Family

ID=10665977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90202851A Expired - Lifetime EP0427314B2 (fr) 1989-11-09 1990-10-25 Composition de blanchiment

Country Status (10)

Country Link
EP (1) EP0427314B2 (fr)
JP (1) JPH08919B2 (fr)
AU (1) AU635577B2 (fr)
BR (1) BR9005662A (fr)
CA (1) CA2029262C (fr)
DE (1) DE69024334T3 (fr)
ES (1) ES2081342T5 (fr)
GB (1) GB8925285D0 (fr)
IN (1) IN171327B (fr)
ZA (1) ZA908967B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038391A1 (de) * 1990-12-01 1992-06-04 Henkel Kgaa Stabilisierung von percarbonat
EP0634483B1 (fr) * 1993-07-14 2000-09-13 The Procter & Gamble Company Compositions de blanchiment stabilisées
SE508954C2 (sv) 1997-03-21 1998-11-16 Eriksson Jan Olof Rengöringsmedel, fritt från tensider
ES2203377T3 (es) * 1999-06-30 2004-04-16 Kao Corporation Compuesto virucida y esporicida.
DE102006026039A1 (de) * 2005-10-07 2007-04-19 Söll Gmbh Zusammensetzung zur Vernichtung von Fadenalgen
EP2157162A1 (fr) * 2008-08-13 2010-02-24 The Procter and Gamble Company Composition de blanchiment particulaire comportant des enzymes
EP2447350A1 (fr) * 2010-10-29 2012-05-02 The Procter & Gamble Company Coparticule de blanchiment
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
CA3213769A1 (fr) 2021-04-01 2022-10-06 Sterilex, Llc Desinfectant/agent d'assainissement pulverulents sans matiere quaternaire

Family Cites Families (8)

* Cited by examiner, † Cited by third party
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 (fr) * 1974-03-06 1978-05-09
JPS54163906A (en) * 1978-06-16 1979-12-27 Kao Corp Foamable bleachable detergent composition
EP0016567B1 (fr) * 1979-03-06 1984-02-01 Unilever N.V. Compositions détergentes
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

Also Published As

Publication number Publication date
JPH03223400A (ja) 1991-10-02
AU635577B2 (en) 1993-03-25
AU6585290A (en) 1991-05-16
JPH08919B2 (ja) 1996-01-10
EP0427314A2 (fr) 1991-05-15
EP0427314B1 (fr) 1995-12-20
CA2029262C (fr) 1996-11-12
GB8925285D0 (en) 1989-12-28
ZA908967B (en) 1992-07-29
DE69024334D1 (de) 1996-02-01
IN171327B (fr) 1992-09-19
BR9005662A (pt) 1991-09-17
ES2081342T3 (es) 1996-03-01
EP0427314A3 (en) 1991-10-23
DE69024334T3 (de) 2004-10-21
ES2081342T5 (es) 2005-02-16
CA2029262A1 (fr) 1991-05-10
DE69024334T2 (de) 1996-05-09

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