WO2023121485A1 - Compacted-powder single-dose soap that dissolves quickly in the time required to ensure hand cleaning with a moisturising effect - Google Patents

Abstract

The present invention relates to a compacted-powder single-dose soap that dissolves quickly in the time necessary to ensure hand cleaning with a moisturising effect, characterised in that it is a formula without water in its chemical composition, which dissolves between 25 and 30 seconds in contact with water when washing hands, containing in its structure active ingredients and natural oils that provide moisture and emollience to the hands, which are affected by continuous washing and by the presence of detergents and surfactants. The invention further aims to reduce water consumption in the use and production of personal care products; to ensure the proper time for hand washing; and to preserve hand moisture after constant hand washing.

Description

SINGLE-DOSE SOAP IN COMPACTED POWDER THAT RAPIDLY DISSOLUTES IN THE TIME NECESSARY TO ENSURE HAND CLEANLINESS WITH A MOISTURIZING EFFECT

TECHNICAL FIELD

The present invention is developed in the technical field of personal care and hygiene products, specifically single-dose soaps.

BACKGROUND OF THE INVENTION

There is a wide range of toiletries on the market, such as bar soaps, liquid soaps, shampoo, conditioners, among others, whose composition has water as the main ingredient. In the case of bar soaps, they are based on alkalis, oils, ammonium, resins, although they do not have water in their composition, they do not dissolve instantly, on the contrary, residues are always left that are later soaked and lose their characteristics. Initials, such as detergency power, bar weight per soak, odor, color. Although very small bars can be molded, they cannot be called unit doses.

In the case of liquid soaps, these contain within their formulation water as a component with the highest percentage. The same is true of the other cosmetic forms of personal hygiene products.

Water is the so-called "BLUE GOLD", and its scarcity will be the world's problem by 2050. By 2025, two thirds of the world's population will be living in stressed conditions due to lack of water. Today 2 billion people suffer from the shortage of this element.

19% of the world's water, coming from different tributaries, is used by the Industry, and the Personal Care Industry has water as the main component of its formulations, examples of this are shampoos and conditioners for hair, liquid soaps for hands and body, among other formulations.

Hand washing is the activity that helps us to protect ourselves from infections and diseases of viral and bacterial origin. Therefore, make sure to perform Correct hand washing requires rubbing time to ensure that the detergent can destroy contaminating bacteria. According to the WHO, the time is 20 to 30 seconds. To ensure that people spend the necessary time washing their hands, we need a soap product that just dissolves completely in water at the designated time.

Constant hand washing and the presence of detergent agents in the formulations not only remove bacteria and viruses, but also remove the natural fat from the skin's stratum corneum. The removal of natural fat leaves the skin devoid of the natural protection barrier, producing immediate, medium or long-term drying of the hands.

Within the search for previous patents, the following were found: US6541441 B2 Single-dose soap unit and method; US2003153482A1 Singledose quick-dissolving cleansing agent with medicinal properties; and ES1253425U single dose soap bar. In these there are proposals for compacted single-dose soap, but in each case only formulations focused on sanitary action are presented and not on the effect it generates on the skin. In addition, none of the aforementioned ensures that its dissolution time is close to or similar to that indicated by the WHO.

In this sense, the present invention proposes a solution that covers the following needs: the urgent need to reduce water consumption within the formulations of personal care products, such as shampoo, liquid soaps, conditioners, among others, the main ingredient water within of formulations of this type; Due to the need to guarantee the necessary time for correct hand washing, this time should be between 25 and 30 seconds, which is the time recommended by the WHO, with a wash at the indicated time and with the correct rubbing of hands and fingers, the elimination of contaminating bacteria and viruses is guaranteed, non-compliance with said hygiene is the main cause of infections, facilitates the spread of multi-resistant microorganisms and contributes to infectious outbreaks; and the preservation of the moisturizing of the hands after washing, since the constant use of surfactants present in hand soaps, does not They only eradicate contaminating bacteria and viruses, but also the lipid layer of the skin that naturally protects from any external aggressor agent, also called exposome.

Emphasizing the positive environmental impact not only by reducing the use of water in the formulation but also in the processes derived from production. During the process of cleaning and sanitizing production equipment, the use of a large amount of water is required for washing, due to the size of the production batches of liquid soaps or shampoos with water. In the packaging process and final presentations of the product, there is a reduction in the size of the packages that contain it, in addition to this, the storage space is reduced since much less space would be needed compared to that needed if it were a conventional liquid soap.

DESCRIPTION OF THE INVENTION

The present invention solves the existing problems in the state of the art by means of a "Soap-unit-dose compacted powder that quickly dissolves in the time necessary to ensure hand cleaning with a moisturizing effect" that consists of a formula without water in its chemical composition. , which dissolves between 25 and 30 seconds on contact with water at the time of hand washing, the formula contains active ingredients and natural oils in its structure that provide hydration and emollience to the hands, which are affected by continuous washing and by the presence of detergents and surfactants.

The present invention consists of: a) A formula with powdered detergent, Lauñl sodium sulfoacetate, hydrophilic component, this ingredient has the function of cleaning hands. b) Zinc stearate anhydrous binder of easy disintegration, which allows the formulation ingredients to bind, contributes to the compaction process of the tablet, facilitates the rapid disintegration of the tablet upon contact with water and when rubbing the tablets. hands; could be also used for this same effect the Calcium Carbonate in the same percentage. c) An oily binder of natural origin, which can preferably be mineral oil or oil from a fruit or seed obtained by any physical or physicochemical extraction method. This oil, product of homogenization with the powders of the formula, covers the surface of the particles facilitating the adhesion of the powder particles and maintaining the structure of the tablet; It gives the formulation the necessary oiliness without affecting foam formation. d) Semi-solid natural butter at a temperature of 20 to 25°C. Due to the effect of homogenization and rubbing with the other ingredients of the formula, they lose their structure and give the formulation creaminess. These butters work as an emollient and soften the hands; e) Sodium hyaluronate or other moisturizing active ingredients such as ceramides or another active ingredient of biotechnological origin that directly contributes to the restructuring of the hydrolipidic layer, providing a soft texture to the hands. f) Fragrance and dyes that can give the tablet odor and color, the percentage of use is from 0.1% to 5%.

Finally, the formula with all its ingredients are mixed at room temperature, sieved to ensure good dispersion and control the homogeneity of the powders, compacted by applying a compression/compaction force and time, the pressure and compaction time depends on the resulting structure of the mixture, are adjustable parameters.

BRIEF DESCRIPTION OF THE FIGURES

No figures are shown.

PREFERRED EMBODIMENTS OF THE INVENTION

The present invention "Unidose-soap in compacted powder that quickly dissolves in the time necessary to ensure hand cleaning with a moisturizing effect" characterized by being a formula without water in its composition chemical, which dissolves between 25 and 30 seconds on contact with water at the time of hand washing, the formula contains active ingredients and natural oils in its structure that provide hydration and emollience to the hands, which are affected by washing continuous and by the presence of detergents and surfactants. a) A formula with powder detergent, Lauhl sodium sulfoacetate, a hydrophilic component that ranges between 30 and 65%, this ingredient whose function is to clean, form foam and act as a surfactant, when in contact with water and when rubbing the hands. hands is activated, causing a creamy foam. For the use of this ingredient, it must be checked that its technical specifications are current, basically, it must not be hydrated, therefore the relative humidity to which it must be subjected in the laboratory must be between 65 and 80% humidity. b) A Zinc stearate that goes between 10 and 20% anhydrous binder of easy disintegration, allows to bind the ingredients of the formulation, contributes to the compaction process of the tablet, facilitates the rapid disintegration of the tablet when coming into contact with water and by rubbing hands; Calcium Carbonate in the same percentage can also be used for this same effect. The regulation of these binders is key to a good compaction and contributes to the resistance to breakage of the tablet, in other words, it provides it with the necessary hardness to withstand transport. c) An oily binder of natural origin, which can preferably be mineral oil or oil from a fruit or seed obtained by any physical or physicochemical extraction method, ranging between 3 and 10% within the formulation, this oil, product from homogenization with the powders of the formula, it coats the surface of the particles, facilitating the adhesion of the powder particles and maintaining the structure of the tablet; It gives the formulation the necessary oiliness without affecting foam formation. d) A solid natural butter at a temperature of 20 to 25°C, due to the effect of homogenization and rubbing with the other ingredients of the formula, they lose their structure and give creaminess to the formulation. These butters go between 3 and 8%, it works as a hydrophobic and emollient binder; e) A sodium hyaluronate or other moisturizing assets such as ceramides or another active ingredient of biotechnological origin that contributes directly to the restructuring of the hydrolipidic mantle, ranging between 1.5 and 3%. f) A fragrance and dyes that can give the tablet odor and color, the percentage of use is from 0.1% to 5%.

The formula with all its ingredients are mixed at room temperature, sieved to ensure good dispersion and control the homogeneity of the powders, compacted by applying a compression/compaction force and time, the pressure and compaction time depends on the structure. resulting from the mix, are adjustable parameters. The pH of the mixture must be between 4.5 and 5.5, which is the pH that this type of product must maintain in order not to stress the skin of the hands.

Claims

CLAIMS A single-dose compacted powder soap that quickly dissolves in the time necessary to ensure hand cleaning with a moisturizing effect, characterized in that the formula: a) does not contain water in its chemical composition; b) it dissolves between 25 and 30 seconds when in contact with water at the time of hand washing, c) it contains in its structure active ingredients and natural oils that provide hydration and emollience to the hands, which are affected by continuous washing and due to the presence of detergents and surfactants, d) has the following composition: a. a formula with powdered detergent, Lauhl sodium sulfoacetate, a hydrophilic component that ranges between 30 and 65%, whose function is to clean, foam and act as a surfactant, upon contact with water and hand rubbing it activates, causing a creamy foam; b. a Zinc stearate ranging between 10 and 20% anhydrous binder of easy disintegration; Calcium Carbonate in the same percentage can also be used for this same effect; c. an oily binder of natural origin, which can preferably be mineral oil or oil from a fruit or seed obtained by any physical or physicochemical extraction method, ranging between 3 and 10% within the formulation; d. a solid natural butter at a temperature of 20 to 25°C ranging between 3 and 8%, works as a hydrophobic binder and emollient; and. a sodium hyaluronate or other moisturizing assets such as ceramides or another active ingredient of biotechnological origin that contributes directly to the restructuring of the hydrolipidic layer, ranging between 1.5 and 3%; F. a fragrance and dyes that can give the tablet odor and color, the percentage of use is from 0.1% to 5%. 7 A single-dose compacted powder soap that quickly dissolves in the time necessary to ensure hand cleaning with a moisturizing effect according to claim 1, characterized in that the formula with powder detergent, Lauhl sodium sulfoacetate, a hydrophilic component that ranges between 30 and 65% contains current technical specifications, basically, it must not be hydrated, therefore the relative humidity to which it must be subjected must be between 65 and 80% humidity. A single-dose compacted powder soap that dissolves quickly in the time necessary to ensure hand cleaning with a moisturizing effect according to claim 1, characterized in that the formula with all its ingredients are mixed at room temperature, sieved to ensure good dispersion and control homogeneity. of the powders, they are compacted by applying a compression/compaction force and time, the pressure and compaction time being dependent on the resulting structure of the mixture, they are adjustable parameters. A single-dose compacted powder soap that quickly dissolves in the time necessary to ensure hand cleaning with a moisturizing effect according to claim 1, characterized in that the pH of the formula must be between 4.5 and 5.5, which is the pH that this type of product must maintain. so as not to stress the skin of the hands. 8