PL245689B1 - Hand washing preparation and method of using the hand washing preparation - Google Patents

Abstract

The subject of the application is a hand washing preparation which contains from 5% to 94.9% by weight of a composition containing anionic surfactants from the group of sodium, potassium or ammonium alkyl sulphates with alkyl chains containing from 8 to 18 carbon atoms, sodium, potassium or ammonium soaps with alkyl chains containing from 8 to 18 carbon atoms and sodium, potassium or ammonium alkyl glutamates with alkyl chains containing from 8 to 18 carbon atoms, from 0.1% to 35% of sodium percarbonate and from 5% to 25% of hectorite. The application also includes a method of using a hand washing preparation, which consists in placing the preparation containing from 5% to 94.9% by weight of a composition containing anionic surfactants from the group of sodium, potassium or ammonium alkyl sulfates with alkyl chains containing from 8 to 18 carbon atoms, sodium, potassium or ammonium soaps with alkyl chains containing from 8 to 18 carbon atoms, sodium, potassium or ammonium alkoxy glutamates with alkyl chains containing from 8 to 18 carbon atoms, from 0.1% to 35% of sodium percarbonate and from 5% to 25% of hectorite in the form of solid particles with a diameter in the range of 1 - 2 mm, in a container of a device intended for non-contact dosing of the preparation onto the skin of the hands, comprising a container connected to a mill which grinds the particles to a size of 0.1 - 2 mm. 0.3 mm, nozzle, photocell, whereby before starting the washing process, the hand is placed under the dispenser nozzle, activating the photocell, which in turn activates the grinder, which automatically dispenses a specific amount of the ground preparation, then the ground preparation is rubbed on the skin with a wet hand, and the generated foam is spread over the entire washed surface, after which the foam is rinsed off.

Description

Description of the invention

The subject of the invention is a preparation intended for washing hands, having antibacterial action, adapted to a contactless dispensing system.

The subject of the invention is a method of using a hand washing preparation having antibacterial activity, taking into account the use of a touchless dispensing system.

Antibacterial hand washing preparations commonly known in the art contain 0.1 to 25% by weight of surfactants, 0.1 to 10% by weight of amphiphilic solvent and/or hydrophobic solvent and/or hydrotrope, 0.1 to 70% by weight of substances with antibacterial action, 0.5 to 2% by weight of sequestrants, 0.05 to 3% by weight of perfume compositions, 0.05 to 5% by weight of moisturizing and/or lubricating additives for the hand skin, 0.01 to 0.5% by weight of preservatives, 0.1 to 4% of viscosity modifiers and 5 to 85% by weight of water.

The surfactants used are preferably compounds from the groups of anionic and/or nonionic and/or amphoteric surfactants. Anionic surfactants used include compounds from the groups of soaps, alkyl ether sulfates, alkyl sulfates, alkyl sulfonates, alkyl phosphates, alkyl sulfosuccinates, alkyl taurates, alkyl sarcosinates, alkyl gluconates or similar compounds slightly modified by attaching ethylene oxide and/or propylene oxide to them, while nonionic surfactants used include nonionic surfactants from the groups of ethylene oxide adducts and/or adducts of a mixture of ethylene and propylene oxides to compounds containing in their structure an alkyl chain having a length of 8 to 22 carbon atoms, preferably ethoxylated and/or ethoxylated-propylene ethoxylated: fatty alcohols, fatty acids, esters of higher fatty acids, vegetable oils, sorbitan esters; alkyl polyglucosides; alkanolamides; while amphoteric surfactants used are compounds from the alkyl betaine and/or alkylamido betaine groups or similar compounds slightly modified by attaching ethylene oxide and/or propylene oxide to them.

Amphiphilic solvents used include ethyl alcohol and/or isopropyl alcohol and/or propylene glycol and/or butylene glycol and/or pentylene glycol and/or hexylene glycol butyl ether and/or butylene glycol propyl ether, hydrophobic solvents include silicones, paraffin oils, petroleum, alkanes and isoalkanes with an alkyl chain length of 16 to 18, and higher fatty acid esters, and hydrotropes include sodium cumenesulfonate and/or sodium toluenesulfonate and/or urea and/or phosphoric acid esters.

Sequestrants are usually compounds derived from citric acid and/or phosphoric acid and/or lactic acid and/or gluconic acid and/or edetic acid.

Glycerine, sorbitol, glycols, polyglycols, amino acids, fat derivatives or lanolin derivatives are used as moisturizing and/or lubricating substances for the skin of the hands.

Ethanol, n-propanol, 1,2-propanol, hydrogen peroxide, quaternary ammonium salts are used as antibacterial substances.

Viscosity modifiers used include compounds from the group of inorganic salts, mainly sodium chloride and/or potassium chloride, polymeric compounds from the group of cellulose derivatives, mainly carboxymethylcellulose and/or hydroxyethylcellulose, and/or hydroxypropylcellulose, and/or methylcellulose, and/or hydroxypropylmethylcellulose, polymeric compounds from the group of polycarboxylates, mainly sodium polyacrylate or similar slightly chemically modified compounds, compounds from the group of minerals, mainly bentonites and/or hectorites, and/or montmorillonites.

Hand washing preparations based on surface-active compounds (surfactants) are known from the state of the art.

The production of traditional antibacterial hand washing preparations usually involves mixing the individual components with water and then adding and mixing approximately 0.1-6% of salt (sodium chloride, magnesium chloride).

The solutions developed and used so far in the field of hand washing preparations assume that after adding and dissolving the appropriate portion of the preparation in tap water, a washing bath is obtained that allows for the removal of both hydrophilic and hydrophobic dirt. The bath additionally has an antibacterial effect.

The solutions developed and commonly used so far in the field of hand washing preparations take into account obtaining a product with a relatively high viscosity, which makes it convenient to use. The effect of high viscosity is obtained by introducing various types of salts into the mass of the product. The presence of salt affects the change in the shape and size of micelles in the volume phase of the product, thus causing a significant increase in viscosity. However, the presence of salt in the composition gives the preparation a relatively high detergent effect. This means that during the washing process the skin is largely deprived of the hydrophobic layer that protects against excessive evaporation of water from the skin. When hand washing preparations are used frequently, the condition of the skin of the hands deteriorates significantly.

Instead of salt, other viscosity modifiers can be used, for example from the group of polymers or minerals. However, the presence of such modifiers significantly prolongs the dissolution time of the preparation in water during its use. As a result, the user uses excessive portions of the preparation. This causes the skin to come into contact with a washing bath containing a high concentration of surface-active compounds, which in turn affects the significant irritating effects of the washing bath.

Commonly used solutions contain water. This requires the introduction of preservative substances into the cosmetic mass. Preservatives, in turn, increase the irritation of the skin of the hands. This is particularly unfavorable in the case of frequent use of preparations. Using water as a base also limits the spectrum of possible antibacterial ingredients.

The aim of the invention was to develop a preparation intended for washing the skin of hands, with additional antibacterial action, demonstrating the required effectiveness of action (washing) with a simultaneous very low drying effect on the skin of hands and a very low irritation effect. Such features will mean that the preparation can be used very often without the risk of significant weakening of the condition of the skin of hands.

The aim of the invention was to develop a method of using a preparation intended for washing the skin of hands, demonstrating the required effectiveness of action (washing) with a simultaneous very low drying effect on the skin of hands, a very low irritation effect and additionally with an antibacterial effect.

It turned out that based on anionic surfactants, minerals with thickening effect and on the basis of substances that release active oxygen in contact with water it is possible to develop a composition of a hand washing preparation characterized by washing effect, good foaming effect, low drying effect, low irritation effect and antibacterial effect. It turned out that antibacterial properties can be obtained by using sodium percarbonate (adduct of hydrogen peroxide and sodium carbonate), which decomposes in water with the release of active oxygen. As a result of this reaction, active oxygen is created, showing antibacterial effect.

The preparation according to the invention contains from 5 to 94.9% by weight of a composition containing anionic surfactants from the group of sodium, potassium or ammonium alkyl sulfates with alkyl chains containing from 8 to 18 carbon atoms, sodium, potassium or ammonium soaps with alkyl chains containing from 8 to 18 carbon atoms and sodium, potassium or ammonium alkyl glutamates with alkyl chains containing from 8 to 18 carbon atoms, from 0.1 to 35% of sodium percarbonate and from 5 to 25% of hectorite.

The preparation according to the invention does not contain water as a solvent, nor does it contain preservatives or auxiliary substances.

Frequent hand washing significantly impoverishes the natural hydrolipid layer that protects the skin from excessive water loss. The preparation has been designed to protect the skin from excessive lipid losses, and thus prevent the deterioration of the skin condition after washing hands. The preparation can be used very often without the risk of significant deterioration of the skin condition of the hands. This is a great advantage of the proposed solution.

Thanks to the use of sodium percarbonate, which is highly stable in an anhydrous environment, the preparation has antibacterial properties. During the use of the preparation, during contact with water on the skin of the hands, sodium percarbonate decomposes with the release of active oxygen. The advantage of this solution is the achievement of antibacterial action during the use of the preparation (the compound used decomposes "in situ" only under the influence of water with the release of active oxygen).

The essence of the method of using the preparation consists in that the preparation containing from 5 to 94.9% by weight of the composition of anionic surfactants from the group of sodium, potassium or ammonium alkyl sulfates with alkyl chains containing from 8 to 18 carbon atoms, sodium, potassium or ammonium soaps with alkyl chains containing from 8 to 18 carbon atoms and sodium, potassium or ammonium alklyutamiates with alkyl chains containing from 8 to 18 carbon atoms and from 0.1 to 35% of sodium percarbonate and from 5 to 25% of hectorite in the form of solid particles with a diameter in the range of 1-2 mm, is placed in a container of a device intended for non-contact dosing of the preparation onto the skin of hands, containing: • a container connected to a mill that grinds particles to a size of 0.1-0.3 mm, • a nozzle, • a photocell, at which before starting the washing process, the hand is placed under the dispenser nozzle, activating the photocell, which in turn activates the grinder, which automatically doses a specific amount of the ground preparation, then the ground preparation is rubbed onto the skin with a wet hand, and the foam produced is spread over the entire washed surface, after which the foam is rinsed off.

Example 1

The hand washing preparation comprises 30% by weight of an anionic surfactant in the form of sodium alkyl sulphate produced from coconut fatty acids, 15% by weight of an anionic surfactant in the form of sodium soap produced from coconut fatty acids, 10% by weight of an anionic surfactant in the form of sodium alkyl glutamate produced from coconut fatty acids, 40% by weight of sodium percarbonate and 5% by weight of hectorite.

The preparation is a mixture of solid particles with dimensions ranging from 1 to 2 mm. A 1% aqueous dispersion of the preparation has the following physicochemical and functional properties: detergency capacity (mass of hydrophobic dirt solubilized by the tested dispersion of the preparation) 10%, foaming capacity (Rose-Miles method) 170 cm ³ , irritation potential (zein number defined as the mass of zein in terms of pure nitrogen, solubilized in 100 g of aqueous detergent solution) 15 mg N / 100 ml, skin drying after 2 hours from the washing process - an increase of 5% compared to the skin not in contact with the washing bath. Out of 20 people using the preparation for frequent hand washing, 20 people noticed an improvement in the feeling of skin hydration and smoothness after the washing process. Example 2

The preparation for frequent hand washing contains 30% by weight of an anionic surfactant in the form of sodium soap produced from coconut fatty acids, 10% by weight of an anionic surfactant in the form of sodium alkyl glutamate produced from coconut fatty acids, 4% by weight of an anionic surfactant in the form of sodium alkyl sulfate produced from coconut fatty acids, 50% by weight of sodium percarbonate and 6% by weight of hectorite.

The preparation is manufactured in the form of a mixture of solid particles with dimensions ranging from 1 to 2 mm. A 1% aqueous dispersion of the preparation has the following physicochemical and functional properties: detergency capacity (mass of hydrophobic dirt solubilized by the tested dispersion of the preparation) 10%, foaming capacity (Rosa-Miles method) 160 cm ³ , irritation potential (zein number defined as the mass of zein in terms of pure nitrogen, solubilized in 100 g of aqueous detergent solution) 15 mg N / 100 ml, skin drying after 2 hours from the washing process - an increase of 8% compared to the skin not in contact with the washing bath. Out of 20 people using the preparation for frequent hand washing, 18 people noticed an improvement in the feeling of skin hydration and smoothness after the washing process. Example 3

The preparation for frequent hand washing contains 50% by weight of anionic surfactant in the form of sodium alkyl glutamate produced from coconut fatty acids, 10% by weight of anionic surfactant in the form of sodium soap produced from coconut fatty acids, 2% by weight of anionic surfactant in the form of sodium alkyl sulfate produced from coconut fatty acids, 35% by weight of sodium percarbonate and 3% by weight of hectorite.

The preparation intended for frequent hand washing with the given composition is manufactured in the form of a mixture of solid particles with dimensions in the range of 1-2 mm. 1% aqueous dispersion of the preparation has the following physicochemical and functional properties: detergency capacity (mass of hydrophobic dirt solubilized by the tested dispersion of the preparation) 2%, foaming capacity (Rosa-Miles method) 200 cm ³ , irritation potential (zein number defined as the mass of zein in terms of pure nitrogen, solubilized in 100 g of aqueous detergent solution) 20 mg N / 100 ml, skin drying after 2 hours from the washing process - an increase of 5% compared to the skin not in contact with the washing bath. Out of 20 people using the preparation for frequent hand washing, 18 people noticed an improvement in the feeling of skin hydration and smoothness after the washing process.

Example 4

The preparation in the form of solid particles with a diameter of 1-2 mm is placed in the container of the device designed for non-contact dosing of the preparation onto the skin of the hands. The container is connected to a mill, which crushes the particles to a size of 0.1-0.3 mm. Before starting the washing process, the hand is placed under the nozzle of the dispenser. The photocell transmits a signal and starts the mill, which automatically doses a specified amount of the ground preparation onto the inside of the hand. Then, the ground preparation is rubbed onto the skin with a hand moistened with water. Within two seconds, abundant foam is created on the skin of the hands, which is spread over the entire washed surface of the hands. In the next stage, the foam is rinsed off the hands under a stream of running tap water and the hands are dried with a towel.

Claims (2)

1. A preparation for washing hands, characterized in that it contains from 5 to 94.9% by weight of a composition containing anionic surfactants from the group of sodium, potassium or ammonium alkyl sulfates with alkyl chains containing from 8 to 18 carbon atoms, sodium, potassium or ammonium soaps with alkyl chains containing from 8 to 18 carbon atoms and sodium, potassium or ammonium alkyl glutamates with alkyl chains containing from 8 to 18 carbon atoms, from 0.1 to 35% of sodium percarbonate and from 5 to 25% of hectorite. 2. A method of using a preparation for washing hands, characterized in that the preparation containing from 5 to 94.9% by weight of a composition containing anionic surfactants from the group of sodium, potassium or ammonium alkyl sulfates with alkyl chains containing from 8 to 18 carbon atoms, sodium, potassium or ammonium soaps with alkyl chains containing from 8 to 18 carbon atoms and sodium, potassium or ammonium alkoxyglutamates with alkyl chains containing from 8 to 18 carbon atoms, from 0.1 to 35% of sodium percarbonate and from 5 to 25% of hectorite in the form of solid particles with a diameter in the range of 1-2 mm, is placed in a container of a device intended for non-contact dosing of the preparation onto the skin of hands, comprising: • a container connected to a mill that grinds particles to a size of 0.1-0.3 mm, • a nozzle, • photocell, whereby before starting the washing process, the hand is placed under the dispenser nozzle, activating the photocell, which in turn activates the grinder, which automatically dispenses a specific amount of the ground preparation, then the ground preparation is rubbed onto the skin with a wet hand, and the foam produced is spread over the entire washed surface, after which the foam is rinsed off.