EP0079697B2 - Reinigungsmittelzusammensetzungen - Google Patents

Reinigungsmittelzusammensetzungen Download PDF

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Publication number
EP0079697B2
EP0079697B2 EP82305666A EP82305666A EP0079697B2 EP 0079697 B2 EP0079697 B2 EP 0079697B2 EP 82305666 A EP82305666 A EP 82305666A EP 82305666 A EP82305666 A EP 82305666A EP 0079697 B2 EP0079697 B2 EP 0079697B2
Authority
EP
European Patent Office
Prior art keywords
alkali metal
composition
amine oxide
aqueous detergent
detergent composition
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
EP82305666A
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English (en)
French (fr)
Other versions
EP0079697A1 (de
EP0079697B1 (de
Inventor
Anthony Francis Martin
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.)
Procter and Gamble Ltd
Procter and Gamble Co
Original Assignee
Procter and Gamble Ltd
Procter and Gamble Co
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 Procter and Gamble Ltd, Procter and Gamble Co filed Critical Procter and Gamble Ltd
Priority to AT82305666T priority Critical patent/ATE17595T1/de
Publication of EP0079697A1 publication Critical patent/EP0079697A1/de
Publication of EP0079697B1 publication Critical patent/EP0079697B1/de
Application granted granted Critical
Publication of EP0079697B2 publication Critical patent/EP0079697B2/de
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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
    • C11D3/395—Bleaching agents
    • C11D3/3956—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
    • C11D1/66—Non-ionic compounds
    • C11D1/75—Amino oxides

Definitions

  • This invention relates to aqueous cleaning compositions and especially to chlorine bleach-containing aqueous cleaning compositions useful for the removal of oxidisable stains from and the disinfection of hard surfaces.
  • Compositions in accordance with the invention find particular utility in the cleaning of sanitary fittings such as toilets, bidets, sinks, baths and shower units in addition to the disinfection of drains and the washing of tiled surfaces.
  • Aqueous chlorine bleaching products are well known in the art and have been used for many years in a variety of bleaching and disinfecting applications.
  • the active component of a product of this type is normally an alkali metal hypochlorite, usually at a level from 1 to 15% by weight, and the physical characteristics of the product are those of a dilute salt solution with a viscosity less than 20 centistokes (20 x 10- 6 M2s -1 ).
  • compositions incorporate one or more bleach stable surfactants as an aid in increasing viscosity and a preferred example of such a surfactant is an amine oxide containing one C 10 ⁇ C 18 alkyl group and two lower alkyl, usually C 1 -C 4 alkyl groups.
  • a preferred example of such a surfactant is an amine oxide containing one C 10 ⁇ C 18 alkyl group and two lower alkyl, usually C 1 -C 4 alkyl groups.
  • the compositions also contain a source of alkalinity and alkali metal salts of various kinds.
  • compositions in accordance with the invention display cleaning advantages relative to commercially available chlorine bleach compositions embodying the prior art.
  • a stable single phase aqueous detergent composition incorporating a tertiary amine oxide as the sole surfactant species, together with at least one ionisable water soluble compound in an amount to provide a total ionic strength of the composition of at least 3.0 moles/dm 3
  • the amine oxide has the formula R 1 R 2 R 3 N ⁇ O wherein R 1 contains an average of from 14 to 16 carbon atoms and is selected from linear moieties and moieties containing up to 25% methyl branching predominantly in the 2-position relative to the nitrogen atom of the amine oxide, R 2 and R 3 are C 1 -C 4 alkyl groups or C Z- C 4 hydroxyalkyl groups, the total ionic strength of the composition is not greater than 7.81 g moles/dm 3 and the amine oxide is present in an amount of from 1.0% to 2.5% by weight of the composition, such that said composition has a viscosity of at least 0.18 Pa.s (180 cp) at 20°C
  • the composition incorporates a hypochlorite bleach.
  • fluid viscosity is expressed as the dynamic viscosity ⁇ in centipoises (10- 3 Pa.sec).
  • the dynamic viscosity is measured by a Brookfield RVT viscometer and for the purposes of this specification measurements are made with Spindle No. 3 at 100 rpm and a liquid temperature of 20°C.
  • compositions in accordance with the present invention have a density in the range from 1.10 to 1.25 g/cm 3 , typically approximately 1.15 g/cm 3 , so that the numerical value of the kinematic viscosity in centistokes is slightly less than that of the dynamic viscosity in centipoises.
  • the invention will be described primarily with reference to an aqueous composition containing an alkali metal hypochlorite bleach, the latter providing the majority, and preferably substantially all, of the ionic strength requirement.
  • the invention also embraces non-bleach compositions in which the ionic strength is provided by any ionisable alkali or alkali earth metal compound.
  • Bleach composition embodiments of the present invention therefore comprise an amine oxide of defined structure and an alkali metal hypochlorite there being sufficient ionisable inorganic salt present to provide an ionic strength of at least 3.0 g moles/dm 3 .
  • the alkali metal hypochlorite may be a lithium, potassium or sodium hypochlorite and the level of hypochlorite in the composition is normally arranged to lie in the range 1-12%, preferably 5-10% by weight.
  • Customarily hypochlorite bleach compositions contain approximately 6% or 9% hypochlorite by weight.
  • the activity of chlorine bleaching compositions is conventionally expressed in terms of the weight percentage of available chlorine in the composition, and the actual weight percentage of bleaching species is arranged to provide the desired level of 'available chlorine'.
  • the preferred hypochlorite species is sodium hypochlorite which contains 95.3% available chlorine.
  • Alkali metal hypochlorites are commercially available as aqueous solutions containing 10-15% by weight 'available chlorine' and the bulk suppliers normally produce material having available chlorine contents towards the upper end of this range viz. 12-14% by weight.
  • These commercially available hypochlorite solutions contain other salts as byproducts or contaminants, more specifically free alkalinity in the form of alkali metal hydroxide and alkali metal carbonate, and alkali metal chloride.
  • Low levels of other species such as sodium chlorate are also believed to be formed during hypochlorite manufacture but their chemical stability is sufficiently low that they have largely decomposed by the time the hypochlorite is employed in product formulations.
  • the levels of the byproduct materials depend on the processing conditions employed in the manufacture of the hypochlorite but in general they fall within the ranges
  • Amine oxides useful in the present invention have the formula R 1 ,R 2 R 3 N ⁇ O wherein R 1 is a linear alkyl group in which the number of carbon atoms is 14 ⁇ R 1 ⁇ 16 and R 2 and R 3 are C 1 -C 4 alkyl groups or C Z- C 4 hydroxy alkyl groups.
  • the amine oxide is present in an amount of from 1.0% to 2.5% and, in preferred embodiments of the invention from 1% to 1.5% by weight of the composition.
  • the R 1 group may be derived from natural or synthetic hydrocarbon sources.
  • linear groups are defined as including moieties incorporating up to 25% methyl branching, predominantly in the 2-position relative to the nitroqen atom of the amine oxide.
  • compositions for the hypochlorite bleach aspect of the composition, preferred compositions contain an amine oxide level ⁇ 2.0%, more typically 1.0-1.5% and also a lower ionic strength viz. 3.0 g moles/dm 3 minimum in order to achieve target viscosity. Both of these reductions in ingredient level lead to improved storage stability and also lower the cost of the product.
  • the ionisable water soluble compound which forms the other major component of the compositions of the invention is a non surface active organic, or inorganic, compound which must be present in an amount to provide an ionic strength of at least 3.0 g moles/dm 3 .
  • the ionisable compound(s) can be inorganic in nature e.g. hydroxide sulphate, halide (particularly chloride) carbonate, nitrate, orthophosphate, pyrophosphate, polyphosphate or silicate, or organic such as citrate, formate, acetate or succinate.
  • the hypochlorite bleach in which sodium hypochlorite bleach is incorporated, the hypochlorite itself, together with the sodium hydroxide, chloride and chlorate associated with the bleach provides the, or a major proportion of the ionisable compounds required by the invention.
  • certain inorganic compounds such as silicates, and organic compounds incorporating oxidisable groups are unstable and should be avoided.
  • the ionic strength of the composition is calculated by means of the expression where
  • the function C 1 Z l 2 is calculated for each of the ionic species in solution, these functions are summed and divided by two to give the composition ionic strength.
  • the ionisable alkali metal compound normally comprises a caustic alkali such as sodium or potassium hydroxide either alone or in admixture with alkali metal salts.
  • the level of sodium hydroxide necessary to provide a total composition ionic strength of 3.0 g moles/dm 3 where the composition contains only the amine oxide would be approximately 11 % to 12% by weight of the composition dependent on the density of the solution.
  • the at least one ionisable compound comprises a mixture of a caustic alkali in an amount of from 0.5% to 2% by weight of the composition together with one or more alkali metal salts in an amount of at least 10% by weight, more usually at least 15-20%.
  • the ionisable compound can include any of the water soluble inorganic and organic builder and sequestrant salts normally incorporated in such products.
  • Compounds classifiable and well-known in the art as detergent builder salts include the nitrilotriacetates, polycarboxylates, citrates, ortho- and pyro-phosphates, and mixtures of any of these.
  • Metal ion sequestrants include all of the above, plus materials like ethylenediaminetetraacetate, the amino- polyphosphonates and phosphates.
  • a wide variety of poly-functional organic acids and salts is disclosed in European Patent Application Publication No. 0040882 which contains examples of the use of such materials in various cleaning compositions.
  • the builder/sequestrant will comprise from 1 % to 25% of the composition. Citric acid (2%-20% as sodium citrate) is a preferred builder.
  • a highly preferred bleach composition embodiment of the invention therefore comprises from 1 % to 1.5% C 14 linear alkyl dimethyl amine oxide, from 9.0% to 9.5% sodium hypochlorite, from 9.0% to 9.5% sodium chloride and from 0.5% to 1.5% sodium hydroxide.
  • a desirable optional component of compositions in accordance with the invention is a perfume which is present at a level of from 0.01 % to 0.5% preferably from 0.05% to 0.25% by weight of the composition.
  • compositions are made by conventional mixing techniques. Although any order of mixing can be used, presolution of the alkali metal hydroxide and any alkali metal salt is desirable and these are normally added to a solution of the amine oxide. Perfume is then added under high shear agitation together with any additional water to provide the desired product concentration. In the aspect of the invention in which an alkali metal hypochlorite bleach is included, this component is added last.
  • compositions were prepared by dissolving pelleted sodium hydroxide in soft water, adding this to the amine oxide solution and blending this mixture with high shear agitation into an aqueous sodium hypochlorite solution *.
  • compositions are in accordance with the invention.
  • compositions exhibit viscosities in excess of 200 cp (0.20 Pa-sec.) at 20°C after 24 hours.

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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)

Claims (6)

1. Eine stabile einphasige wäßrige Reinigungsmittelzusammensetzung, die ein tertiäres Aminoxid als die einzige oberflächenaktive Verbindung zusammen mit wenigstens einer ionisierbaren, wasserlöslichen Vrbindung in einer Menge enthält, um eine Gesamtionenstärke der Zusammensetzung von wenigstens 3,0 g-Mol/dm3 zu ergeben, dadurch gekennzeichnet, daß das Aminoxid die Formel R1R2R3N ↦ 0 aufweist, worin R1 einen Mittelwert von 14 bis 16 Kohlenstoffatomen aufweist und unter linearen Resten und Resten ausgewählt ist, die bis zu 25% Methylverzweigung überwiegend in der 2-Stellung bezüglich des Stickstoffatoms des Aminoxids enthalten, R2 und R3 C1-C4 Alkylgruppen oder C2-C4 Hydroxyalkylgruppen sind, wobei die Gesamtionenstärke der Zusammensetzung nicht über 7,81 g-Mol/dm3 liegt, und das Aminoxid in einer Menge von 1,0% bis 2,5 Gew.-% der Zusammensetzung vorliegt, sodaß diese Zusammensetzung eine Viskosität von wenigstens 0,18 Pa.s (180 cP) bei 20°C aufweist.
2. Eine wässerige Reinigungsmittelzusammensetzung nach Anspruch 1, dadurch gekennzeichnet, daß im wesentlichen die gesamte Ionenstärke durch ein Gemisch aus Alkalimetyllhypochlorit, Alkalimetallchlorid und Alkalimetallhydroxid geliefert wird.
3. Eine wässerige Reinigungsmittelzusammensetzung nach Anspruch 2, dadurch gekennzeichnet, daß sie 1% bis 1,5% C14-linear-Alkyldimethylaminoxid, 9,0% bis 9,5% Natriumhypochlorit, 9,0% bis 9,5% Natriumchlorid und 0,5% bis 1,5% Natriumhydroxid enthält.
4. Eine wässerige Reinigungsmittelzusammensetzung nach einem der Ansprüche 2 und 3, wobei die Zusammensetzung ein Bleichmittel-stabiles Parfum einverleibt enthält.
5. Eine wässerige Reinigungsmittelzusammensetzung nach Anspruch 1, dadurch gekennzeichnet, daß die ionisierbare, wasserlösliche Verbindung ein organisches oder anorganisches Gerüststoff- oder komplexbildendes Salz ist.
6. Eine wässerige Reinigungsmittelzusammensetzung nach Anspruch 5, worin die wasserlösliche Verbindung aus Alkalimetallcarbonaten, -citraten, -pyrophosphaten, -aminopolyacetaten und -aminopolyphosphonaten ausgewählt ist.
EP82305666A 1981-11-07 1982-10-26 Reinigungsmittelzusammensetzungen Expired - Lifetime EP0079697B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82305666T ATE17595T1 (de) 1981-11-07 1982-10-26 Reinigungsmittelzusammensetzungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8133642 1981-11-07
GB8133642 1981-11-07

Publications (3)

Publication Number Publication Date
EP0079697A1 EP0079697A1 (de) 1983-05-25
EP0079697B1 EP0079697B1 (de) 1986-01-22
EP0079697B2 true EP0079697B2 (de) 1990-03-14

Family

ID=10525715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82305666A Expired - Lifetime EP0079697B2 (de) 1981-11-07 1982-10-26 Reinigungsmittelzusammensetzungen

Country Status (4)

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EP (1) EP0079697B2 (de)
AT (1) ATE17595T1 (de)
CA (1) CA1202853A (de)
DE (1) DE3268705D1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110544A1 (de) * 1982-11-02 1984-06-13 Imperial Chemical Industries Plc Bleichmittelzusammensetzungen
EP0137871B1 (de) * 1983-10-14 1989-10-18 The Procter & Gamble Company Reinigungsmittelzusammensetzungen
GB8330158D0 (en) * 1983-11-11 1983-12-21 Procter & Gamble Ltd Cleaning compositions
GB8332271D0 (en) * 1983-12-02 1984-01-11 Unilever Plc Bleaching composition
GB8333426D0 (en) * 1983-12-15 1984-01-25 Ici Plc Bleaching compositions
GB8630845D0 (en) * 1986-12-24 1987-02-04 Ici Plc Bleaching compositions
US4946619A (en) * 1988-07-19 1990-08-07 The Clorox Company Solubilization of brighter in liquid hypochlorite
US5034150A (en) * 1989-05-03 1991-07-23 The Clorox Company Thickened hypochlorite bleach solution and method of use
US5279758A (en) * 1991-10-22 1994-01-18 The Clorox Company Thickened aqueous cleaning compositions
US5705467A (en) * 1991-10-22 1998-01-06 Choy; Clement K. Thickened aqueous cleaning compositions and methods of use
GB9213578D0 (en) * 1992-06-26 1992-08-12 Unilever Plc Improvements to bleaching compositions
HU219162B (hu) * 1993-07-23 2001-02-28 The Procter And Gamble Company Rövid szénláncú felületaktív anyagokat tartalmazó, javított tisztító hatású viszkózus, vizes mosószerkészítmény és alkalmazása
ES2160152T3 (es) * 1993-12-29 2001-11-01 Reckitt Benckiser Inc Composiciones espesadas de hipoclorito de metal alcalino.
US9133417B2 (en) * 2012-03-23 2015-09-15 The Procter & Gamble Company Liquid cleaning and disinfecting compositions comprising an assymetrically branched amine oxide
US8470755B1 (en) 2012-03-23 2013-06-25 The Procter & Gamble Company Liquid cleaning and disinfecting compositions comprising a zinc inorganic salt

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA797201A (en) * 1965-06-22 1968-10-22 The Procter & Gamble Company Liquid detergent composition
NL134221C (de) * 1969-08-29 Unilever Nv
GB2003522B (en) * 1977-09-02 1982-02-24 Ici Ltd Bleaching and cleaning compositions
US4352678A (en) * 1978-10-02 1982-10-05 Lever Brothers Company Thickened abrasive bleaching compositions
GB2051162A (en) * 1979-05-30 1981-01-14 Reckitt & Colmann Prod Ltd Thickened aqueous alkali metal hypochlorite solutions
NL7908798A (nl) * 1979-12-05 1981-07-01 Unilever Nv Vloeibaar, verdikt chloorbleekmiddel.

Also Published As

Publication number Publication date
EP0079697A1 (de) 1983-05-25
CA1202853A (en) 1986-04-08
ATE17595T1 (de) 1986-02-15
EP0079697B1 (de) 1986-01-22
DE3268705D1 (en) 1986-03-06

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