EP1416038B1 - Compositions de blanchiment liquides épaississantes - Google Patents

Compositions de blanchiment liquides épaississantes Download PDF

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Publication number
EP1416038B1
EP1416038B1 EP02257478A EP02257478A EP1416038B1 EP 1416038 B1 EP1416038 B1 EP 1416038B1 EP 02257478 A EP02257478 A EP 02257478A EP 02257478 A EP02257478 A EP 02257478A EP 1416038 B1 EP1416038 B1 EP 1416038B1
Authority
EP
European Patent Office
Prior art keywords
composition
amine oxide
toilet
hypochlorite
alkyl group
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
EP02257478A
Other languages
German (de)
English (en)
Other versions
EP1416038A1 (fr
Inventor
Frank Theodoor Van De Scheur
Ivana Trombetta
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
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to DE60217358T priority Critical patent/DE60217358T2/de
Priority to AT02257478T priority patent/ATE350452T1/de
Priority to EP02257478A priority patent/EP1416038B1/fr
Publication of EP1416038A1 publication Critical patent/EP1416038A1/fr
Application granted granted Critical
Publication of EP1416038B1 publication Critical patent/EP1416038B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial 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
    • C11D1/83—Mixtures of non-ionic with anionic 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
    • C11D3/395—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
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or salts thereof
    • C11D1/10—Amino carboxylic acids; Imino carboxylic acids; Fatty acid condensates thereof
    • 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

  • the present invention relates to thickened liquid bleaching compositions.
  • the invention relates to thickened liquid bleaching compositions which contain hypochlorite and which are particularly suitable for use in toilet rim mounted toilet bowl cleaning devices.
  • Toilet bowls require regular cleaning and disinfecting in order to prevent the accumulation of unsightly deposits, reduce odours and inhibit bacterial growth.
  • Liquid hypochlorite-based bleaching agents are widely used and effective in this context. Typically the liquid bleaching agent is squirted neat from a bottle around the bowl and under the rim, with manual scrubbing if necessary.
  • a liquid hypochlorite-based bleaching agent in a liquid dispensing device for the toilet rim.
  • the formulation has to work at high dilution, due to the action of the flush water.
  • a shear thinning rheology is desirable for effective liquid dispensing and dosing.
  • an adequate foam profile is necessary so that product efficacy can be perceived by the consumer when the liquid is dosed into the toilet bowl.
  • US 4,337,163 discloses a thickened bleach composition containing as the thickening agent a mixture of a first detergent such as an amine oxide and a second detergent selected from alkali-metal salts of saturated C 8-18 fatty acids, alkali metal acylsarcosinates, alkali metal alkyltaurides, sugar esters, and alkali metal C 10-18 alkyl ether sulphates with 1 to 10 moles of ethylene oxide and/or propylene oxide.
  • a first detergent such as an amine oxide
  • a second detergent selected from alkali-metal salts of saturated C 8-18 fatty acids, alkali metal acylsarcosinates, alkali metal alkyltaurides, sugar esters, and alkali metal C 10-18 alkyl ether sulphates with 1 to 10 moles of ethylene oxide and/or propylene oxide.
  • WO 86/01823 discloses a thickened hypochlorite solution with less than 4% amine oxide and one or more cosurfactants selected from sarcosinate, alkyl ether sulphate and alkylsulphonate in amounts less than that of the amine oxide.
  • US 4,588,514 discloses a thickened hypochlorite solution with a surfactant system including relatively large amounts of amine oxides, soaps or sarcosinates for thickening and a lesser amount of alkyl ether sulphate for storage stability.
  • cleaning compositions comprising hypochlorite, tertiary amine oxide surfactant and sarcosinate surfactant may be found in WO-A-95/33810 and WO-A-97/06233.
  • formulations described above are all pourable formulations intended for direct application by the user to the surface to be treated. Because of their increased viscosity, they are said to exhibit superior adhesion to vertical or inclined surfaces such as toilet bowls.
  • the present inventors have found that it is possible to formulate a thickened liquid bleaching composition which contains hypochlorite and possess the correct balance of foam profile, rheology and efficacy such that it is suitable for use in toilet rim mounted toilet bowl cleaning devices.
  • the present invention provides a liquid hypochlorite bleaching composition which is suitable for use in a toilet rim mounted toilet bowl cleaning device, the composition having a shear thinning rheology and being capable of generating a foam height of at least 3 cm immediately after the toilet flush when used in a toilet rim mounted cleaning device; wherein the composition comprises:
  • the invention further provides the use of said composition according to claim 4.
  • composition of the invention has a shear thinning rheology.
  • compositions according to the invention will have a viscosity between 2500 and 5000 mPa s at a shear rate of 1 s -1 and a viscosity between 1000 and 2500 mPa s at a shear rate of 161 s -1 when measured according to the above protocol.
  • composition of the invention is capable of generating a foam height of at least 3 cm immediately after the toilet flush when used in a toilet rim mounted cleaning device.
  • the foam height is measured when the composition is dosed at 0.17 g per flush from a dispenser mounted on the rim of a Villeroy & Boch toilet model "Magnum”, with 6 litres of water released per flush.
  • liquid hypochlorite bleaching compositions which are thickened with a particular combination of amine oxide and sarcosinate surfactants have the desired properties as described above for suitability for use in toilet rim mounted toilet bowl cleaning devices.
  • Suitable amine oxide surfactants for use in thickened liquid hypochlorite compositions according to the invention may be generally described as those tertiary amine oxides of the formula R 2 R'NO, in which each R is a lower alkyl group, for instance methyl, and R' is a long chain alkyl group having from 12 to 18 carbon atoms, for instance a lauryl, myristyl, palmityl, cetyl or stearyl group.
  • the inventors have found that the chain length of the long chain alkyl group in the amine oxide surfactant is especially important for delivering optimum properties.
  • the total amount of amine oxide surfactant used in thickened liquid hypochlorite compositions of the invention is also important for optimum performance, and it is most preferred that the amount is at least 6 wt%.
  • the amount will typically range from 6 to 15 wt%, more preferably about 10 wt%, by total weight of amine oxide surfactant based on total weight of the composition.
  • Suitable sarcosinate surfactants for use in thickened liquid hypochlorite compositions according to the invention include acyl sarcosinates or mixtures thereof.
  • the acyl sarcosinate surfactants are derived from natural fatty acids and the amino-acid sarcosine (N-methyl glycine).
  • Preferred are long chain acyl sarcosinates having the formula RCON(CH 3 )CH 2 COOM, in which M is an alkali metal cation, especially sodium or potassium, and R is a branched or straight chain C 8 -C 18 alkyl group.
  • Suitable long acyl sarcosinates include sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium stearoyl sarcosinate, the corresponding potassium salts, and mixtures thereof.
  • Sodium lauroyl sarcosinate is most preferred. This material is commercially available from Croda Chemical, UK under the trademark CRODASINIC ® LS30.
  • the amount of sarcosinate surfactant that may be used for use in thickened liquid hypochlorite compositions according to the invention preferably ranges from 0.1 to 10 wt%, more preferably from 1 to 5 wt%, and most preferably from 2 to 3 wt%, by total weight of sarcosinate surfactant based on total weight of the composition.
  • compositions of the invention comprise hypochlorite in an aqueous matrix.
  • the hypochlorite may be a simple hypochlorite salt such as those of the alkali or alkaline earth metals or a compound which produces hypochlorite on hydrolysis, such as organic N-chloro compounds. It is preferred to use an alkali metal hypochlorite such as sodium hypochlorite.
  • the amount of hypochlorite present in thickened liquid hypochlorite compositions according to the invention preferably ranges from 0.1 to 10 wt%, more preferably from 1 to 8 wt%, and most preferably from 3 to 6 wt%, by weight of hypochlorite based on total weight of the composition.
  • the composition of the invention also contains a source of alkalinity which keeps its pH at or above 11.5, not only during production of the product but also during storage.
  • a source of alkalinity is meant a mixture of ingredients which is able to keep the pH at or above the required level.
  • the pH of compositions of the invention will preferably be from 8 to 13, more preferably from 9 to 13.
  • Suitable sources of alkalinity are known in the art and are generally made up of highly alkaline compounds such as alkali metal hydroxides and alkali metal salts of weak acids such as alkali metal carbonates and silicates.
  • Particularly suitable sources of alkalinity are mixtures of alkali metal hydroxide and alkali metal silicate such as sodium silicate.
  • composition of the invention may also contain other optional components to enhance consumer appeal such as such as perfumes and colorants.
  • Such components should be sufficiently stable to hypochlorite at the pH of the composition to ensure adequate storage stability.
  • Ultramarine Blue (UMB) and copper phthalocyanines are examples of widely used hypochlorite-stable pigments which may be incorporated in the composition of the present invention.
  • composition of the invention is particularly suitable for use in toilet rim mounted toilet bowl cleaning devices.
  • a preferred type of dispenser for use with the composition of the invention may be generally described as a device which is adapted to be suspended over the toilet rim, and which comprises a cartridge adapted to contain the composition, and a dispensing mechanism for the composition which releases the composition in response to the action of the flush water.
  • a most preferred type of dispenser for use with the composition of the invention comprises a reusable holder which is adapted to engage with the cartridge, which is replaceable when empty.
  • the holder incorporates a securing means such as a hook which is shaped to be clipped over the rim of the lavatory bowl, and has a distribution plate which projects into the path of flushing water from the lavatory when the dispenser is secured to the rim of the lavatory bowl.
  • the plate typically bears a wicking device to spread the composition over the surface of the plate.
  • the wicking device may for example be a porous pad, or more preferably a system of channels which direct the passage of the composition by capillary action.
  • the composition is delivered from the cartridge to the surface of the plate where it is exposed to flushing water and washed off the plate and carried to the lavatory bowl.
  • a composition according to the invention was prepared having ingredients as shown in the following Table: INGREDIENT LEVEL wt% sodium lauroyl sarcosinate (1) 2.00 C12-18 alkyl dimethyl amine oxide blend (2) 10.00 sodium hydroxide 1.00 sodium silicate 1.00 sodium hypochlorite 4.87 Demineralised water, minors To 100% (1) Added as CRODASINIC ® LS30, commercially available from Croda Chemicals (30 wt% active solution) (2) A blend of amine oxide containing 25 wt% C 12 alkyl dimethyl amine oxide, 40 wt% C 14 alkyl dimethyl amine oxide and 35 wt% C 16 and C 18 alkyl dimethyl amine oxide (each by weight based on the total weight of amine oxide). Prepared by blending AROMOX ® BW 500 and AROMOX ® 14D-W 970 (both commercially available from Akzo Nobel)
  • a composition according to the invention was prepared having ingredients as shown in the following Table: INGREDIENT LEVEL wt% sodium lauroyl sarcosinate (1) 2.00 C12-18 alkyl dimethyl amine oxide blend (3) 10.00 sodium hydroxide 1.00 sodium silicate 1.00 sodium hypochlorite 4.87 Demineralised water, minors to 100% (3) A blend of amine oxide containing 30 wt% C 12 alkyl dimethyl amine oxide, 60 wt% C 14 alkyl dimethyl amine oxide and 10 wt% C 16 and C 18 alkyl dimethyl amine oxide (each by weight based on the total weight of amine oxide). Prepared by blending AROMOX® BW 270 and AROMOX ® 14D-W 970 (both commercially available from Akzo Nobel).
  • INGREDIENT LEVEL wt% sodium lauroyl sarcosinate (1) 1.5 AROMOX ® BW 500 (5) 33.33 sodium hydroxide 1.00 sodium silicate 1.00 sodium hypochlorite 4.87 Demineralised water, minors To 100% (5) A blend of amine oxides commercially available from Akzo Nobel.

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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 (4)

  1. Composition de blanchiment liquide à base d'hypochlorite qui est adaptée pour être utilisée dans un dispositif de nettoyage de la cuvette des toilettes monté sur le rebord des toilettes, la composition ayant une rhéologie rhéofluidifiante et étant capable de générer une hauteur de mousse d'au moins 3 cm immédiatement après que la chasse a été tirée lorsqu'elle est utilisée dans un dispositif de nettoyage monté sur le rebord des toilettes ; dans laquelle la composition comprend :
    - un surfactant à base de sarcosinate ;
    - un surfactant à base d'oxyde d'amine ayant la formule R2R'NO, dans laquelle chaque R est un groupe alkyle inférieur, et R' est un groupe alkyle à longue chaîne ayant de 12 à 18 atomes de carbone, et dans laquelle la distribution des longueurs de chaîne du groupe alkyle (R') à longue chaîne, chacune en poids par rapport au poids total de l'oxyde d'amine, est la suivante :
    - de 25 à 30 % en poids : R' est en C12 ;
    - de 40 à 60 % en poids : R' est en C14 ;
    - de 10 à 35 % en poids : R' est en C16 et/ou C18.
  2. Composition selon la revendication 1, dans laquelle le surfactant à base de sarcosinate a la formule RCON(CH3)CH2 COOM, dans laquelle M est un cation de métal alcalin, notamment de sodium ou de potassium, et R est un groupe alkyle en C8-C18 à chaîne linéaire ou ramifiée.
  3. Composition selon l'une quelconque des revendications 1 ou 2, dans laquelle la quantité du surfactant à base d'oxyde d'amine se trouve dans la plage de 6 à 15 % en poids du poids total du surfactant à base d'oxyde d'amine par rapport au poids total de la composition.
  4. Utilisation de la composition selon l'une quelconque des revendications 1 à 3 dans un dispositif de nettoyage de la cuvette des toilettes monté sur le rebord des toilettes.
EP02257478A 2002-10-29 2002-10-29 Compositions de blanchiment liquides épaississantes Expired - Lifetime EP1416038B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60217358T DE60217358T2 (de) 2002-10-29 2002-10-29 Verdickte flüssige Bleichmittelzusammensetzungen
AT02257478T ATE350452T1 (de) 2002-10-29 2002-10-29 Verdickte flüssige bleichmittelzusammensetzungen
EP02257478A EP1416038B1 (fr) 2002-10-29 2002-10-29 Compositions de blanchiment liquides épaississantes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02257478A EP1416038B1 (fr) 2002-10-29 2002-10-29 Compositions de blanchiment liquides épaississantes

Publications (2)

Publication Number Publication Date
EP1416038A1 EP1416038A1 (fr) 2004-05-06
EP1416038B1 true EP1416038B1 (fr) 2007-01-03

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Family Applications (1)

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EP02257478A Expired - Lifetime EP1416038B1 (fr) 2002-10-29 2002-10-29 Compositions de blanchiment liquides épaississantes

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EP (1) EP1416038B1 (fr)
AT (1) ATE350452T1 (fr)
DE (1) DE60217358T2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9487742B2 (en) 2012-09-10 2016-11-08 The Clorox Company Drain formulation for enhanced hair dissolution
US10208273B2 (en) 2012-09-10 2019-02-19 The Clorox Company Drain formulation for enhanced hair dissolution

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1988985B1 (fr) * 2005-06-24 2013-08-07 Rhodia, Inc. Compositions tensioactives structurees

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8325541D0 (en) * 1983-09-23 1983-10-26 Unilever Plc Liquid thickened bleaching composition
FR2570713B1 (fr) * 1984-09-21 1987-08-21 Lesieur Cotelle Compositions de nettoyage aqueuses epaissies
US5693601A (en) * 1993-07-23 1997-12-02 The Procter & Gamble Company Thickened aqueous detergent compositions with improved cleaning performance with short chain surfactants
AU2656195A (en) * 1994-06-07 1996-01-04 Reckitt & Colman Inc. Cleaning compositions thickened with n-alkyl-n-acyl amino acids and myristyl/cetil dimethyl amine oxides
CN1102649C (zh) * 1995-08-10 2003-03-05 雷基特-科尔曼公司 具有触变性质的有色流凝清洁组合物

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9487742B2 (en) 2012-09-10 2016-11-08 The Clorox Company Drain formulation for enhanced hair dissolution
US10208273B2 (en) 2012-09-10 2019-02-19 The Clorox Company Drain formulation for enhanced hair dissolution

Also Published As

Publication number Publication date
EP1416038A1 (fr) 2004-05-06
ATE350452T1 (de) 2007-01-15
DE60217358T2 (de) 2007-05-16
DE60217358D1 (de) 2007-02-15

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