EP3551741B1 - Entkeimungssystem - Google Patents

Entkeimungssystem Download PDF

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Publication number
EP3551741B1
EP3551741B1 EP17792091.5A EP17792091A EP3551741B1 EP 3551741 B1 EP3551741 B1 EP 3551741B1 EP 17792091 A EP17792091 A EP 17792091A EP 3551741 B1 EP3551741 B1 EP 3551741B1
Authority
EP
European Patent Office
Prior art keywords
foaming
foaming liquid
sanitising
acid
hypochlorite solution
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.)
Active
Application number
EP17792091.5A
Other languages
English (en)
French (fr)
Other versions
EP3551741A1 (de
Inventor
Amitava Pramanik
Priyanka SARKAR
Nimish Harshadrai Shah
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 Global IP Ltd
Unilever IP Holdings BV
Original Assignee
Unilever Global IP Ltd
Unilever IP Holdings BV
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Publication date
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Priority to PL17792091T priority Critical patent/PL3551741T3/pl
Publication of EP3551741A1 publication Critical patent/EP3551741A1/de
Application granted granted Critical
Publication of EP3551741B1 publication Critical patent/EP3551741B1/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
    • C11D3/48—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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0094—High foaming 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/395—Bleaching agents
    • C11D3/3956—Liquid compositions

Definitions

  • the present invention relates to a sanitising system, a sanitizing kit and a method of sanitising hands using said system or kit.
  • the sanitising system comprises a first compartment comprising an alkaline aqueous hypochlorite solution containing 0.0010 to 2.0 wt.% of hypochlorite (CIO - ) and a second compartment comprising an acid aqueous foaming liquid, valve means operable to put both the first compartment and the second compartment in communication with an outlet, wherein, upon operation of the valve means, the hypochlorite solution is mixed with the foaming liquid to produce an aqueous hypochlorous acid (HOCI) solution having a pH in the range of 5 to 7, and the HOCI solution is discharged through the outlet to form a sanitising foam.
  • HOCI aqueous hypochlorous acid
  • the sanitising kit of the present invention comprises a first container comprising an alkaline aqueous hypochlorite solution containing 0.0010 to 2.0 wt.% of hypochlorite and valve means operable to dispense the hypochlorite solution from the first container; a second container comprising an acid aqueous foaming liquid and valve means operable to dispense the foaming liquid from the second container; and instructions for use instructing users to simultaneously or successively operate the valve means of the first and the second container to dispense the hypochlorite solution and the foaming liquid into a hand of a user.
  • Alcohol is typically used in antimicrobial sanitising formulations and can be used alone or in combination with antimicrobial agents such as triclosan or benzalkonium salts.
  • an antimicrobial agent can be generated in situ by mixing of components in a dispensing system.
  • US 2013/0202484 A A discloses a hand sanitizer that provides the benefits of an antibacterial alcohol hand wash and sanitizer with the sporicidal properties of chlorine dioxide (CIO 2 ).
  • the hand sanitizer comprises:
  • the chlorine dioxide is generated in situ by mixing an aqueous sodium chlorite solution held in a container with an aqueous solution of one or more acids and surfactant, held in a second container. Repeated use of such a formulation can lead to skin irritation.
  • US 2010/0036305 A A discloses a dispensing system that generates CIO 2 and that comprises two compartments.
  • the first dispenser chamber is filled with a liquid (first part) which comprises deionised water containing a first reagent (sodium chlorite) and foam promoter (cocamidopropyl betaine).
  • the second dispenser chamber is filled with an aqueous acid solution (second part) comprising deionised water containing citric acid, sorbic acid, boric acid, and foam promoter (cocamidopropyl betaine).
  • the solution also comprises a buffer (trisodium phosphate), trisodium citrate, glycerine, benzotriazole, sodium molybdate and sodium nitrate.
  • the first part and the second part are miscible as liquids and as foams to produce CIO 2 on exiting the dispensing system.
  • WO 00/12672 discloses a composition comprising two liquids which are separately maintained prior to forming an admixture during delivery to a surface to be treated, whereupon the admixture generates a foam sufficient for cleaning efficacy and stability.
  • a first liquid preferably includes a hypohalite, or a hypohalite generating agent and a second liquid preferably includes a peroxygen agent.
  • the hypohalite generating agent can be maintained in an environment free of peroxygen agent and otherwise conducive to their cleaning activity and stability up to the time of use.
  • the hypohalite and peroxygen react to liberate oxygen gas.
  • a method of cleaning drains comprises the step of pouring into a drain at least one liquid which generates foam in situ, the foam characterized by a density of at least about 0.1 g/ml, a half life of greater than about thirty minutes, a volume of at least about 500 ml, and wherein the foam contains a cleaning-effective amount of a drain cleaning active.
  • the inventors have developed a sanitizing system that dispenses a composition having high antimicrobial efficacy and yet is safe for the user's skin.
  • the sanitizing system of the present invention comprises:
  • aqueous hypochlorous acid solution having a pH 5-7 is produced and is discharged in the form of a foam.
  • This foam has anti-microbial properties and is very effective as a small quantity (mass) of foam can cover a large surface area.
  • Another aspect of the present invention relates to a sanitising kit comprising
  • the user can mix the alkaline aqueous hypochlorite solution and the acid aqueous foaming liquid to form sanitising foam in the form of a foamed aqueous hypochlorous acid solution having a pH 5 to 7.
  • the invention further provides a method of sanitising hands using a sanitising system or a sanitizing kit according to the present invention.
  • any particular upper value or amount can be associated with any particular lower value or amount.
  • a first aspect of the present invention relates to a sanitising system comprising:
  • hypochlorite refers to a hypochlorite anion with chemical formula CIO - .
  • hypothalamic acid refers to the non-dissociated acid with chemical formula HOCI.
  • foaming agent refers to a substance that is capable of promoting the formation of an aqueous foam.
  • first and second compartments are housed in a single container, with both the first and second compartments having separate dip tubes.
  • the dip tubes extend to a mixing chamber comprising valve means wherein the alkaline aqueous hypochlorite solution and the acid aqueous foaming liquid are mixed together for discharge through the outlet.
  • the foaming agent employed in accordance with the present invention is preferably a surfactant.
  • Suitable surfactants that may be used in the composition according to the present invention are anionic, zwitterionic, non-ionic or amphoteric surfactants, and mixtures thereof. More preferably, the foaming agent is an anionic surfactant or zwitterionic surfactant. Most preferably, the foaming agent is an anionic surfactant.
  • the foaming liquid comprises at least 0.1 wt.% of a foaming anionic surfactant, more preferably at least 0.5 wt.% of a foaming anionic surfactant, even more preferably at least 1.0 wt.% of a foaming anionic surfactant.
  • the foaming liquid comprises at most 5 wt.% of a foaming anionic surfactant, more preferably at most 4 wt.% of a foaming anionic surfactant, even more preferably at most 3 wt.% of a foaming anionic surfactant.
  • the foaming anionic surfactant is selected from sodium lauryl ether sulfate (SLES), sodium lauryl sulfate (SLS), ammonium lauryl sulfate and combinations thereof.
  • the foaming liquid comprises 0.5 to 0.8 wt.% of organic acid selected from citric acid, lactic acid, malonic acid, malic acid and combinations thereof. Most preferably the organic acid is citric acid.
  • the foaming liquid has a pH in the range of 2 to 6.
  • the foaming liquid preferably contains at least 90 wt.% water, more preferably at least 92 wt.% water and most preferably at least 94 wt.% water.
  • the foaming liquid contains less than 5 wt.% ethanol, more preferably less than 3 wt.% ethanol, most preferably less than 1 wt.% ethanol.
  • the foaming liquid contains less than 1 wt.% hydrogen peroxide, more preferably less than 0.5 wt.% hydrogen peroxide, even more preferably less than 0.2 wt.% hydrogen peroxide.
  • the hypochlorite solution contains 0.001 to 2.0 wt.%, more preferably 0.005 to 1.5 wt.%, even more preferably 0.007 to 1.0 wt.% and most preferably 0.01 to 0.5 wt.% of hypochlorite.
  • the hypochlorite solution preferably has a pH in the range of 8 to 12, more preferably a pH in the range of 9 to 11 and even more preferably a pH in the range of 9 to 10.
  • the hypochlorite solution contains at least 90 wt.% water, more preferably at least 92 wt. % water and most preferably at least 94 wt. % water.
  • the hypochlorite solution contains less than 5 wt.% ethanol, more preferably less than 3 wt.% ethanol, more preferably less than 1 wt. % ethanol.
  • the first compartment is substantially free of a foaming agent.
  • substantially free of a foaming agent is meant that the foaming agent is present in less than 2%, preferably less than 1%, more preferably less than 0.1% by weight and optimally absent from the first compartment.
  • the sanitizing foam that is produced by operating the valve means of the sanitising system preferably has a density of 0.1 to 0.3 g/ml, more preferably of 0.16 to 0.23 g/ml.
  • Foam density can be determined by dispensing foam into a pre-weighed measuring cylinder, measuring the volume of the foam and weighing the measuring cylinder containing the foam. The measured weight to volume ratio corresponds to the density of foam.
  • the first compartment contains 25 to 2,000 ml, more preferably 50 to 1,200 ml of the hypochlorite solution liquid and the second compartment contains 25 to 2,000 ml, more preferably 50 to 1,200 ml of the foaming liquid.
  • the present invention relates to a sanitising kit comprising
  • the alkaline aqueous hypochlorite solution is dispensed in the form of a liquid and the acid aqueous foaming liquid is dispensed in the form of a foam.
  • the alkaline aqueous hypochlorite solution in the first container preferably is an alkaline aqueous hypochlorite solution as used in the sanitising system according to the present invention.
  • the acid aqueous foaming liquid in the second container preferably is an acid aqueous foaming liquid as used in the sanitising system.
  • the present invention relates to a method of sanitising hands using a sanitising system or a sanitizing kit according to the present invention, said method comprising operating the valve means of the sanitising system to dispense the sanitizing foam into a hand of a user or comprising operating in random order the valve means of the first and the second container to dispense the hypochlorite solution and the foaming liquid into a hand of a user.
  • each compartment of the spraying device contained a dip tube that extended into the same mixing chamber.
  • the spraying device further contained a manually operated pump system that pumped the fluids from the compartments into the mixing chamber and that expelled the mixture from this mixing chamber through a dispensing nozzle. Upon operation of the pump system the two liquid components were combined in the mixing chamber in a weight ratio of approximately 1:1.
  • a sanitising foam was produced by operating the pump system of the spraying device described in Example 1.
  • the foam had a density of approximately 0.2 g/ml.
  • the hypochlorous acid concentration and the pH of the foam are given in Table 2. TABLE 2 Hypochlorous acid pH 50 ppm 5.82
  • the antimicrobial efficacy of the sanitising foam was determined using a Microbial Contact Kill Assay.
  • the liquid components of the sanitising foam were carefully mixed to produce an unfoamed sanitising liquid to facilitate the testing of the antimicrobial efficacy.
  • Table 4 shows that hypochlorous acid decomposes quickly after mixing meaning that the user's skin is not exposed to high concentration of active chlorine for a long time.
  • the sanitizing system according to the present invention is ideal for hand sanitizing applications.

Landscapes

  • 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)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Claims (12)

  1. Entkeimungssystem, umfassend:
    • eine erste Kammer, umfassend eine alkalische wässrige Hypochloritlösung, wobei die Hypochloritlösung 0,0010 bis 2,0 Gew.-% Hypochlorit (CIO-) enthält und einen pH in dem Bereich von 8 bis 13,5 aufweist;
    • eine zweite Kammer, umfassend eine saure wässrige schäumende Flüssigkeit, wobei die schäumende Flüssigkeit 0,1 bis 5,0 Gew.-% eines Schäumungsmittels enthält und einen pH in dem Bereich von 2 bis 6 aufweist;
    • Ventilmittel, die betreibbar sind, um sowohl die erste Kammer als auch die zweite Kammer mit einem Auslass in Verbindung zu bringen;
    wobei bei Betätigung der Ventilmittel die Hypochloritlösung mit der schäumenden Flüssigkeit in einem Verhältnis von 0,8:1 bzw. bis 1,3:1 gemischt wird, um eine wässrige hypochlorige Säure (HOCI)-Lösung mit einem pH im Bereich von 5 bis 7 herzustellen und die wässrige hypochlorige Säure-Lösung durch den Auslass abgelassen wird, um einen Entkeimungsschaum zu bilden und wobei das Schäumungsmittel ein schäumendes Tensid ist und wobei die schäumende Flüssigkeit 0,5 bis 0,8 Gew.-% organische Säure, ausgewählt aus Zitronensäure, Milchsäure, Malonsäure, Äpfelsäure und Kombinationen davon, umfasst.
  2. Entkeimungssystem nach Anspruch 1, wobei die schäumende Flüssigkeit 0,1 bis 5,0 Gew.-% eines schäumenden anionischen Tensids enthält.
  3. Entkeimungssystem nach Anspruch 2, wobei das schäumende anionische Tensid aus Natriumlaurylethersulfat, Natriumlaurylsulfat, Ammoniumlaurylsulfat und Kombinationen davon ausgewählt ist.
  4. Entkeimungssystem nach irgendeinem der vorhergehenden Ansprüche, wobei die schäumende Flüssigkeit einen pH in dem Bereich von 5 bis 6 aufweist.
  5. Entkeimungssystem nach irgendeinem der vorhergehenden Ansprüche 1 bis 4, wobei die schäumende Flüssigkeit mindestens 90 Gew.-% Wasser enthält.
  6. Entkeimungssystem nach irgendeinem der vorhergehenden Ansprüche 1 bis 5, wobei die schäumende Flüssigkeit weniger als 1 Gew.-% Wasserstoffperoxid enthält.
  7. Entkeimungssystem nach irgendeinem der vorhergehenden Ansprüche 1 bis 6, wobei die Hypochloritlösung mindestens 90 Gew.-% Wasser enthält.
  8. Entkeimungssystem nach irgendeinem der vorhergehenden Ansprüche 1 bis 7, wobei der entkeimende Schaum eine Dichte von 0,1 bis 0,3 g/ml aufweist.
  9. Entkeimungssystem nach irgendeinem der vorhergehenden Ansprüche 1 bis 8, wobei die erste Kammer 25 bis 2.000 ml der Hypochloritlösung und die zweite Kammer 25 bis 2.000 ml der schäumenden Flüssigkeit enthält.
  10. Entkeimungskit, umfassend:
    • einen ersten Behälter, umfassend eine alkalische wässrige Hypochloritlösung, wobei die Hypochloritlösung 0,0010 bis 2,0 Gew.-% Hypochlorit enthält und einen pH in dem Bereich von 8 bis 11 aufweist, wobei der erste Behälter Ventilmittel umfasst, die betreibbar sind, um die Hypochloritlösung aus dem ersten Behälter abzugeben;
    • einen zweiten Behälter, umfassend eine saure wässrige schäumende Flüssigkeit, wobei die schäumende Flüssigkeit 0,1 bis 5,0 Gew.-% eines Schäumungsmittels enthält und einen pH in dem Bereich von 2 bis 6 aufweist, wobei der zweite Behälter Ventilmittel umfasst, die betreibbar sind, um die schäumende Flüssigkeit aus dem zweiten Behälter abzugeben, wobei das Schäumungsmittel ein schäumendes Tensid ist und wobei die schäumende Flüssigkeit 0,5 bis 0,8 Gew.-% organische Säure umfasst, ausgewählt aus Zitronensäure, Milchsäure, Malonsäure, Äpfelsäure und Kombinationen davon;
    • Gebrauchsanweisungen zur Instruktion der Anwender, um gleichzeitig oder nacheinander die Ventilmittel des ersten und des zweiten Behälters zu betätigen, um die Hypochloritlösung und die schäumende Flüssigkeit in die Hand eines Benutzers abzugeben.
  11. Kit nach Anspruch 10, wobei die alkalische wässrige Hypochloritlösung als Flüssigkeit abgegeben und die saure wässrige schäumende Flüssigkeit in Form eines Schaums abgegeben wird.
  12. Verfahren zum Entkeimen der Hände unter Verwendung eines Entkeimungssystems nach irgendeinem der Ansprüche 1 bis 9 oder eines Entkeimungs-Kits nach Anspruch 10 oder 11, wobei das Verfahren das Betätigen der Ventilmittel des Entkeimungssystems umfasst, um den entkeimenden Schaum in eine Hand des Benutzers abzugeben, oder den Betrieb der Ventilmittel des ersten und des zweiten Behälters in beliebiger Reihenfolge umfasst, um die Hypochloritlösung und die schäumende Flüssigkeit in eine Hand eines Benutzers abzugeben.
EP17792091.5A 2016-12-09 2017-11-03 Entkeimungssystem Active EP3551741B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17792091T PL3551741T3 (pl) 2016-12-09 2017-11-03 Układ odkażający

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16203298 2016-12-09
PCT/EP2017/078197 WO2018103973A1 (en) 2016-12-09 2017-11-03 Sanitising system

Publications (2)

Publication Number Publication Date
EP3551741A1 EP3551741A1 (de) 2019-10-16
EP3551741B1 true EP3551741B1 (de) 2022-02-09

Family

ID=57542824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17792091.5A Active EP3551741B1 (de) 2016-12-09 2017-11-03 Entkeimungssystem

Country Status (6)

Country Link
EP (1) EP3551741B1 (de)
BR (1) BR112019011552B1 (de)
MX (1) MX2019006653A (de)
PL (1) PL3551741T3 (de)
WO (1) WO2018103973A1 (de)
ZA (1) ZA201903270B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2911975A1 (es) * 2020-11-20 2022-05-23 Brill Engines S L Un producto para la limpieza de la piel sana

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9707719D0 (en) * 1997-04-16 1997-06-04 Unilever Plc Improvements relating to bleaching compositions comprising hypochlorite
WO2000012672A1 (en) * 1998-08-31 2000-03-09 The Clorox Company Foaming drain cleaner
US20050282722A1 (en) 2004-06-16 2005-12-22 Mcreynolds Kent B Two part cleaning composition
GB0501719D0 (en) 2005-01-28 2005-03-02 Green Bruce P Sterilant system
GB2470551B (en) * 2009-05-22 2011-05-11 Tristel Plc Hand sanitizer
GB2477717A (en) * 2010-02-03 2011-08-17 Mauve Technology Ltd Disinfectant materials and methods
GB2484262B (en) 2010-09-29 2013-08-21 Tristel Plc Hand sanitizer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
BR112019011552B1 (pt) 2022-12-27
ZA201903270B (en) 2020-09-30
EP3551741A1 (de) 2019-10-16
WO2018103973A1 (en) 2018-06-14
BR112019011552A2 (pt) 2019-10-15
MX2019006653A (es) 2019-08-21
PL3551741T3 (pl) 2022-06-06

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