EP0340371B1 - Bleaching composition containing alkaline hypochlorite and process for its manufacture - Google Patents

Bleaching composition containing alkaline hypochlorite and process for its manufacture Download PDF

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Publication number
EP0340371B1
EP0340371B1 EP88500116A EP88500116A EP0340371B1 EP 0340371 B1 EP0340371 B1 EP 0340371B1 EP 88500116 A EP88500116 A EP 88500116A EP 88500116 A EP88500116 A EP 88500116A EP 0340371 B1 EP0340371 B1 EP 0340371B1
Authority
EP
European Patent Office
Prior art keywords
weight
bleaching composition
alkaline metal
composition according
total weight
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
EP88500116A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0340371A3 (en
EP0340371A2 (en
Inventor
Enrique Baixas Veiga
Antonio Rosas Girones
Bill Smith
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.)
Henkel Iberica SA
Original Assignee
Henkel Iberica SA
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 Henkel Iberica SA filed Critical Henkel Iberica SA
Priority to AT8888500116T priority Critical patent/ATE104697T1/de
Publication of EP0340371A2 publication Critical patent/EP0340371A2/en
Publication of EP0340371A3 publication Critical patent/EP0340371A3/en
Application granted granted Critical
Publication of EP0340371B1 publication Critical patent/EP0340371B1/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29Sulfates of polyoxyalkylene ethers
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/395Bleaching agents
    • C11D3/3956Liquid compositions

Definitions

  • bleaching compositions including alkaline metal hypochlorites have been acreditted due to the fact that they are remarkably viscous and, therefore, are appropriate for the treatment of not only horizontal and slanted surfaces but also for vertical surfaces since the viscosity of these compositions causes that the contact time between them and the surfaces to be treated is of much longer duration than that of fluid compositions which rapidly "run" from these surfaces.
  • the principal surface active agent used to date has been an amine oxide, mixed with other surface active agents, which are generally anionic.
  • compositions of the prior art have the disadvantage of giving viscosity levels of 200 centipoises only where their ionic strength is in the region of 4, this being achieved when the alkaline hypochlorite concentration is in the region of 8 to 9 % by weight.
  • said compositions have a very high decomposition power on organic products such as surface active agents and hydrotopes, thereby noticeably reducing the stability of the product in relation to its content of active chlorine.
  • AOX adsorbable organic halogens
  • viscosity levels in the region of 700 to 800 centipoises are achieved, with chlorine concentrations lower than those of the compositions of the prior art, specifically in the region of 3 to 5% by weight, corresponding to an ionic strength of 1 to 2.
  • compositions according to the invention are more stable in relation to hypochlorite than those of the prior art and thereby the finished product is more stable and has less inherent risk of accidents.
  • the viscosity level remains stable with the passing of time.
  • compositions according to the invention are that there is no nitrogen in the molecular structure of the surface active agents, thereby avoiding the risk of the formation of chloramines.
  • the bleaching composition including an alkaline hypochlorite comprises:
  • the anionic surface active agent used in the bleaching compositions including an alkaline hypochlorite according to the invention is an alkylether sulphate of an alkaline cation, which specifically has 2 to 4 units of ethylene oxide and, preferably, 2 to 3 units of ethylene oxide.
  • the alkyl chain of the alkylether sulphate of the alkaline metal is linear and has 6 to 20, preferably 12 to 18 and, more particularly 12 to 14, carbon atoms, the alkaline cation being selected preferably from sodium, potassium and lithium.
  • the neutral salt which forms a part of the bleaching composition based in an alkaline hypochlorite is sodium chloride.
  • these can contain an alkaline metal compound, such as a caustic hydroxide like sodium hydroxide or potassium hydroxide, preferably, however, sodium hydroxide, in such quantities that the pH value of the final composition is between 12.5 and 14 approximately.
  • an alkaline metal compound such as a caustic hydroxide like sodium hydroxide or potassium hydroxide, preferably, however, sodium hydroxide, in such quantities that the pH value of the final composition is between 12.5 and 14 approximately.
  • the optical whitener can be of the phorwhite BHC 766 type, which is a derivate of the 4,4'-bis-(1,2,3-triazolyl)-(2)-stilbene-2,2-sulphonic acid, in the form of potassium salt.
  • the bleaching composition comprising an alkaline hypochlorite is prepared by mixing a solution of alkalinic metal hypochlorite with an alkaline metal alkylether sulphate, with a neutral salt, together with the additives and auxilliary agents which are usual in this type of mixes, such as perfumes, which can be chosen from a great variety of useable perfumes such as monoterpenic, monocyclic and bicyclic alcohols and their esters with alkanoic acids having 2 to 3 carbon atoms such as isoborneol, dihydroterpineol and isobornyl and dihydroterpinyl acetates or similar, as indicated in Spanish patent 554,709, in the name of the same applicant.
  • perfumes which can be chosen from a great variety of useable perfumes such as monoterpenic, monocyclic and bicyclic alcohols and their esters with alkanoic acids having 2 to 3 carbon atoms such as isoborneol, dihydroterpineol and isoborn
  • optical whiteners can be added, together with perfumes and pigments such as copper phthalocyaninas and ultramarine which are stable in these mixes, and opcionally an alkalinising agent to regulate the pH value, such as sodium or potassium hydroxide, giving a final pH value of between 12.5 and 14 in the mix, with agitation, decantation and filtration to obtain a product which is viscous and free of foreign particles and/or any type of aglomerate.
  • perfumes and pigments such as copper phthalocyaninas and ultramarine which are stable in these mixes
  • an alkalinising agent to regulate the pH value, such as sodium or potassium hydroxide, giving a final pH value of between 12.5 and 14 in the mix, with agitation, decantation and filtration to obtain a product which is viscous and free of foreign particles and/or any type of aglomerate.
  • the order in which the components are mixed is arbitrary, however, it is preferable to add the rest of the components to the alkaline hypochlorite solution, either separately or in any combination, under an eventual agitation, followed by an eventual decantation operation and/or filtration and final packaging.
  • the installations used to carry out this process according to the invention are of the usual type used for this kind of operations, which are usually carried out at room temperature.
  • an aqueous solution of sodium hypochlorite is placed, with an active chlorine content which varies between 3 and 7 % by weight and a pH value of between 13.0 and 13.5, and to this solution is added an alkaline metal alkylether sulphate, specifically Pulcra's Montosol PL 18, which is a natural alcohol with a linear chain of 12 to 14 carbon atoms in a proportion of 70:30, and an average ethylene oxide content of 2.3 mols per mol of alcohol, sulphated and neutralised with sodium salt, followed by the addition of the other components and, optionally, decantation and filtration.
  • an alkaline metal alkylether sulphate specifically Pulcra's Montosol PL 18, which is a natural alcohol with a linear chain of 12 to 14 carbon atoms in a proportion of 70:30, and an average ethylene oxide content of 2.3 mols per mol of alcohol, sulphated and neutralised with sodium salt
  • compositions are prepared in accordance with the general formulation and the components and proportions are as shown in table I below.
  • Viscosity at 20 o after 8 weeks I-1 3.0 1.0 16 16 I-2 3.5 1.0 24 24 I-3 4.0 1.0 36 36 I-4 4.5 1.0 100 95 I-5 5.0 1.0 182 175 I-6 5.0 1.5 470 450 I-7 5.0 2.0 790 730 I-8 5.5 1.0 230 225 I-9 5.5 1.5 480 460 I-10 5.5 2.0 680 645 I-11 6.0 1.0 160 155 I-12 6.0 1.5 190 182 I-13 6.0 2.0 260 250
  • an aqueous solution of sodium hypochlorite is placed, with an active chlorine content which varies between 3 and 7% by weight and a pH value of between 13.0 and 13.5, and to this solution is added an alkaline metal alkylether sulphate, specifically Henkel KGaA's Texapon N-70, which is a natural alcohol with a linear chain of 12 to 14 carbon atoms in a proportion of 70:30, and an average ethylene oxide content of 2.0 mols per mol of alcohol, sulphated and neutralised with a sodium salt, followed by the addition of the other components and, optionally, decantation and filtration.
  • an alkaline metal alkylether sulphate specifically Henkel KGaA's Texapon N-70, which is a natural alcohol with a linear chain of 12 to 14 carbon atoms in a proportion of 70:30, and an average ethylene oxide content of 2.0 mols per mol of alcohol, sulphated and neutralised with a sodium salt, followed
  • compositions are prepared in accordance with the general formulation and the components and proportions are as shown in tabla II below.

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  • Chemical & Material Sciences (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)
  • Agricultural Chemicals And Associated Chemicals (AREA)
EP88500116A 1988-05-05 1988-11-28 Bleaching composition containing alkaline hypochlorite and process for its manufacture Expired - Lifetime EP0340371B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8888500116T ATE104697T1 (de) 1988-05-05 1988-11-28 Alkalisches hypochlorit enthaltendes bleichmittel und verfahren zu dessen herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES8801389A ES2007221A6 (es) 1988-05-05 1988-05-05 Composicion blanqueante a base de hipocloritos alcalinos y procedimiento para su obtencion.
ES8801389 1988-05-05

Publications (3)

Publication Number Publication Date
EP0340371A2 EP0340371A2 (en) 1989-11-08
EP0340371A3 EP0340371A3 (en) 1990-04-04
EP0340371B1 true EP0340371B1 (en) 1994-04-20

Family

ID=8256170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88500116A Expired - Lifetime EP0340371B1 (en) 1988-05-05 1988-11-28 Bleaching composition containing alkaline hypochlorite and process for its manufacture

Country Status (6)

Country Link
EP (1) EP0340371B1 (da)
AT (1) ATE104697T1 (da)
DE (1) DE3889217T2 (da)
DK (1) DK219189A (da)
ES (1) ES2007221A6 (da)
PT (1) PT90455B (da)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034150A (en) * 1989-05-03 1991-07-23 The Clorox Company Thickened hypochlorite bleach solution and method of use
ES2040620B1 (es) * 1991-07-24 1994-06-01 Pulcra Sa Composicion de limpieza a base de tensioactivos e hipoclorito.
DE4333100C1 (de) * 1993-09-29 1994-10-06 Henkel Kgaa Bleich- und Desinfektionsmittel
ES2285726T5 (es) 1997-09-19 2011-09-05 THE PROCTER & GAMBLE COMPANY Composiciones blanqueadoras autoespesadas.
US6448215B1 (en) 1998-01-16 2002-09-10 The Procter & Gamble Company Stable colored thickened bleaching compositions
ATE283342T1 (de) * 1998-01-16 2004-12-15 Procter & Gamble Stabile gefärbte verdickte bleichmittelzusammensetzungen
DE19803054A1 (de) * 1998-01-28 1999-07-29 Henkel Kgaa Bleich- und Desinfektionsmittel
EP0942064A1 (en) * 1998-03-09 1999-09-15 The Procter & Gamble Company Liquid hypohalite bleach-based cleaning compositions
US6506718B1 (en) 1998-09-01 2003-01-14 The Procter & Gamble Company Bleaching compositions
EP0984059A1 (en) * 1998-09-01 2000-03-08 The Procter & Gamble Company Bleaching compositions
EP0992576A1 (en) * 1998-10-01 2000-04-12 The Procter & Gamble Company Stable bleaching compositions
EP0990696B1 (en) * 1998-10-01 2005-04-27 The Procter & Gamble Company Stable bleaching compositions

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA674667B (da) * 1966-08-11
US3655566A (en) * 1970-03-05 1972-04-11 Purex Corp Ltd Bleach having stable brighteners
US4526700A (en) * 1983-11-04 1985-07-02 The Procter & Gamble Company Hypochlorite bleach compositions containing optical brighteners
EP0206718B1 (en) * 1984-01-27 1990-08-08 The Clorox Company Bleaching and brightening composition and method
DE3527910A1 (de) * 1985-08-03 1987-02-12 Basf Ag Fluessiges bleichmittel
NZ224700A (en) * 1987-05-26 1991-09-25 Bristol Myers Co Aqueous cleaner comprising alkali metal halogenite, perfume and an anionic surfactant stabiliser

Also Published As

Publication number Publication date
DK219189A (da) 1989-11-06
DK219189D0 (da) 1989-05-03
DE3889217T2 (de) 1994-10-20
EP0340371A3 (en) 1990-04-04
DE3889217D1 (de) 1994-05-26
ES2007221A6 (es) 1989-06-01
PT90455B (pt) 1994-08-31
PT90455A (pt) 1989-11-30
EP0340371A2 (en) 1989-11-08
ATE104697T1 (de) 1994-05-15

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