Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
  • A01N59/16—Heavy metals; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
  • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
  • A01N25/10—Macromolecular compounds
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
  • A01N25/16—Foams
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N55/00—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur
  • A01N55/02—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur containing metal atoms
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
  • A61K8/046—Aerosols; Foams
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/27—Zinc; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
  • A61Q17/005—Antimicrobial preparations
• • 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
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
  • A61K2800/30—Characterized by the absence of a particular group of ingredients

Definitions

• the invention relates to disinfection compositions.
• the present invention relates to novel multipurpose disinfection foams and foamable compositions. It also concerns methods of manufacturing such foams and compositions as well as to the uses thereof.
• Alcohol hand sanitizers are widely accepted and used in the hospital and healthcare sectors. There are disadvantages in alcohol-based sanitizers. Thus, there is a lack of user comfortability and antimicrobial performance, especially long-term antimicrobial performance, is poor. There is no residual activity. Hands will be contaminated right after alcohol has evaporated, and the thickening agent used in the sanitizers will form a residual layer on the sanitized object, such as the user's hands, and offers a good substrate for microbial growth. Also alcohol itself can cause drying and irritation of skin. Alcohol is not effective against all known pathogens.
• Patent publication WO 2012018888 describes an antiseptic liquid formulation, a method for its use, and a method for preparing the formulation. It contains a mixture of EDTA chelated silver ion and polyquaternium-69 polymer, which is said to bond chelated silver ions on the skin, and improve long term performance.
• Silver based sanitizers suffer from stability problems, causing discoloration and performance issues. Also colloidal and particle based silver sanitizers can agglomerate and cause concentration differences.
• Antimicrobial compositions are also described in JP 3406970, WO 2013/026961, WO 2012/144476 and U.S. 2009/0246258.
• the present invention is based on the idea of formulating a multipurpose disinfection foam having low levels of alcohol, by mixing together water, foaming agent, and polymeric type silver ion source, optionally together with other components.
• the present disinfection foams comprise a polymeric type silver ion source of the type formed by a silver salt of polyethyleneimine polymer.
• the present foams and foamable compositions are mainly characterized by what is stated in the characterizing part of claim 1 .
• the present method is mainly characterized by what is stated in the characterizing part of claim 11 .
• a foaming low alcohol content hand sanitizer which has excellent long lasting antimicrobial activity, enhanced stability and skin-feel properties over alcohol-based sanitizers.
• Foam sanitizer leaves smooth moisturized surface on skin without sticky residue, even after multiple applications.
• Silver ions eliminate effectively virus, bacteria, yeast and mold.
• Enhanced stability of the composition is a considerable advantage.
• the polymer e.g. polyethylene imine
• water such water can also be removed before the addition of the silver salt to reach proper stability.
• foams and foamable compositions are suitable for sanitizing and cleansing or even disinfection of humans, animals and other living objects, as well as for treating, for example for the same purposes as mentioned above, inanimate objects, such as surfaces (e.g. door handles) which, when contaminated, become vehicles for communicable diseases.
• the present disinfection foams or foamable compositions contain only small amounts of alcohol, and they basically comprise water, at least one foaming agent, and a polymeric type silver ion source.
• the polymeric type silver ion source is obtained by forming it without water. The latter feature includes the alternative of removing water from a water-containing polymer.
• the polymer type silver ion source is a surprisingly beneficial antimicrobial additive for an antimicrobial foam or foamable composition according invention.
• Very low concentrations of silver ions are needed.
• concentration of the silver ions ranges from 10 to 2000 parts per million, especially from 20 to 200 parts per million of silver, calculated from the total weight of the composition.
• Specific silver salts can be dispersed with polyethyleneimine to form stabile ionic dispersions, where silver ions are associated with amine groups of polyethyleneimine with ionic bonds.
• Suitable silver salts to form polymeric silver ion source are preferably inorganic salts, such as silver chloride or silver sulfate, or organic salts, such as silver lactate.
• a polymeric silver ion source, of the present kind is capable of forming molecular layers of silver polymer on skin.
• the present compositions comprise at least the following components: water, foaming agent, and a polymeric type silver ion source.
• a polymeric type silver ion source for use with humans, there can be agents which improve compatibility with skin contact and for adjusting pH. Examples include betaine for moisturizing effect and improved and skin feel, and lactic acid for adjustment of pH.
• the alcohol content of the novel foams is low, typically less than 3.0% by weight of the total composition, in particular the total amount of lower alkanols (in particular ethanol) is less than 2.5%, preferably less than 1.0% by weight of the total composition.
• foams are produced which are free or essentially free (content less than 0.5% by weight) of alkanol.
• the polymeric type silver ion source of the foam comprises a silver salt of polyethyleneimine polymer, in particular a silver salt of a polyethyleneimine polymer having a molecular weight of about 1,000 to 150,000 g/mol, for example about 20,000 to 120,000 g/mol, in particular about 35,000 to 100,000 g/mol.
• the polymeric silver ion source is formed without water. Water can be removed if necessary, as discussed in the below example, before the polymeric components is contacted with a silver salt.
• the water content of the polymeric component (before it is being contacted with the silver salt) is less than 5.0% by weight of the polymer, in particular less than 2%, preferably less than 1.0%, suitably less than 0.5%, for example less than 0.1 by weight of the polymer.
• the non-aqueous polymer is then dispersed in a suitable medium, such as an alkanol, and contacted with a silver salt.
• a suitable medium such as an alkanol
• the weight ratio of polymer to silver salt depends on the polymer and the silver salt used. Typically the weight ratio is about 5000:1 to 1:1, in particular 500:1 to 3:1, preferably about 250:1 to 4:1, for example about 50:1 to 5:1.
• Contacting is preferably carried out under conditions conducive to achieving a reaction, in particular a chemical reaction, between the polymeric component and the silver component.
• the contacting step is continued until a clear solution of the polymeric component and the silver component is obtained.
• a clear solution of the polymeric component and the silver component is obtained.
• a stabilizing component can be added.
• examples of such components are substances and compounds carrying sulfonamide functional group(s).
• the stabilizer can for example be selected from the group comprising saccharin, cyclamic acid, sulfadiazine and acesulfame, saccharin being particularly preferred.
• the stabilizers can also comprise organic acids, such as carboxylic acids, sulfonic acids and amino acids, phosphates, esters, aldehydes, ketones, zwitterionic compounds, titanates and their organic derivatives, silanes and their organic derivatives and organosulphur compounds.
• organic acids such as carboxylic acids, sulfonic acids and amino acids, phosphates, esters, aldehydes, ketones, zwitterionic compounds, titanates and their organic derivatives, silanes and their organic derivatives and organosulphur compounds.
• the content of the stabilizer is typically 0.001 to 2.5 parts by weight, in particular 0.005 to 1 part by weight.
• foaming agents are further used.
• foaming agents can be selected from surface active compounds (i.e. surfactants).
• surfactants i.e. surfactants
• Typical foaming agents are sodium, magnesium and aluminium laureth sulfate and various amino oxide surfactants in the compositions presented below lauramine oxide has been used.
• the content of the foaming agents is dependent on the chemical identity thereof; typically 0.01 to 10 parts by weight are added for 100 parts of water.
• stable when used in present context, generally stands for foams which do not settle significantly and which do not exhibit significant discoloration and loss of antimicrobial efficiency.
• the present compositions have long shelf life.
• a foam produced as explained herein has a low level of alcohol, in particular the alcohol content, in terms of the total weight of ethanol and isopropyl alcohol, is less than 2.0 parts by weight, preferably less than 1.0 part by weight.
• the alcohol content is a residue of the alkanol used for the step of contacting the polymer with the silver salt.
• the alkanol concentration is so small that the alkanol is of essentially no antimicrobial effect, at least not when compared with the silver component.
• the pH of the foamable aqueous composition is typically in the range of 5.0 to 8.3, although these end points are not limiting. In one embodiment, the pH is preferably about 6.0 to 7.8, for example 6.5 to 7.5.
• compositions can, in particular, contain the following components:
• Antimicrobial foam of invention is especially suitable for hand sanitizer foams, shaving foams, dry cleansing foams for full body, leave on shampoos, face cleansing foams and multipurpose dry cleaning.
• the inventive formulation achieves an unexpectedly large amount of quality, stable foam achieves enhanced and prolonged antimicrobial efficacy through the combination of silver ion activity and smooth distribution of silver ions.
• a foamable antimicrobial composition of the invention was provided by first preparing silver polymer.
• Commercially available polyethyleneimine (PEI) grade (Epomin P-1050, Nippon Shokubai, molecular weight 70 000 g/mol) with high molecular weight was chosen for its low toxicity values.
• 51.14 g of Epomin P-1050 grade contains 25.57 g of water which was removed before the silver polymer was prepared. The water phase disturbs the reaction with the silver salt and can lead to unstable silver polymer, for which reason water was removed at elevated temperature of 100° C. under high vacuum.
• 25.57 g of PEI was then dissolved in 118.83 g of isopropyl alcohol to obtain easily mixable polymer solution.
• the solution was reacted together with 3.57 g of fine grain grade of silver chloride (Silver (I) chloride, Colonial Metals, MESH 325) by mixing at room temperature until a clear colorless solution was formed.
• the obtained solution was further reacted with 2.03 g of acid saccharin (E-954, Productos Aditivos) to stabilize the silver polymer.
• Said solution was diluted with 295.83 litres of deionized water under vigorous mixing to obtain a solution with a silver content of 90 ppm.
• 120.0 g of lauramine oxide (Ammonyx LO, Stepan Company) was added to the solution to obtain foamable solution.
• 240.0 g of natural betaine Betafin BP-20, DuPont was added under stirring.
• the pH of the solution was adjusted to neutral 7 with an addition of 6.0 g of lactic acid.
• a clear stabile liquid was obtained having the following composition (the percentages are based on the weight of the total composition):
• the above formulation gives a log6 result in EN1500 standard test by reducing microbial activity up to 99.9999%.
• the result is excellent compared to alcohol based sanitizers.
• an antimicrobial foaming composition of the invention was prepared by first dissolving 2.29 g of polyethyleneimine (Epomin SP-018, Nippon Shokubai, molecular weight 1 800) with 7.09 g of isopropyl alcohol under vigorous mixing. Said solution was reacted with 0.34 g of silver chloride (Silver (I) chloride, Colonial Metals, MESH 325) and a clear colorless solution was formed. Obtained solution was further reacted with 0.18 g of acid saccharin (E-954, Productos Aditivos) to stabilize the silver polymer. Said solution was diluted with 2.96 litres of deionized water under vigorous mixing to obtain a solution with a silver content of 84 ppm.
• polyethyleneimine Epomin SP-018, Nippon Shokubai, molecular weight 1 800
• isopropyl alcohol reacted with 0.34 g of silver chloride (Silver (I) chloride, Colonial Metals, MESH 325) and a clear colorless solution
• Example 2 According to Turku University of Applied Science IS022196 test, the formula of Example 2 gave >log 5 microbial reduction.
• the present invention can be used in hospital and healthcare sectors, but it can also be used in households and for sporting and outdoor (outing) applications.
• the composition can be characterized as being a multipurpose disinfection foam or foamable composition, which is suitable for two or more purposes selected from the group of disinfecting, sanitizing and cleansing of humans of animals and of inanimate objects.
• the invention achieves manufacture of disinfection foam and foamable compositions which have properties of antimicrobial activity and which are suitable for hand sanitizers, shaving foams, dry cleansing foams for full body treatment, leave on shampoos, face cleansing and multipurpose dry cleaning

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• 2013
  • 2013-05-28 FI FI20135578A patent/FI128215B/fi active IP Right Grant
• 2014
  • 2014-05-28 WO PCT/FI2014/050430 patent/WO2014191631A2/en active Application Filing
  • 2014-05-28 US US14/894,375 patent/US20160106638A1/en not_active Abandoned
  • 2014-05-28 CN CN201480042516.0A patent/CN105473123A/zh active Pending
  • 2014-05-28 EP EP14734848.6A patent/EP3003249B1/en active Active
• 2015
  • 2015-11-26 SA SA515370197A patent/SA515370197B1/ar unknown
• 2018
  • 2018-11-19 US US16/194,454 patent/US10639250B2/en active Active

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