EP4626383A1 - Haarfärbemittel mit bioaktivem glas - Google Patents
Haarfärbemittel mit bioaktivem glasInfo
- Publication number
- EP4626383A1 EP4626383A1 EP23814163.4A EP23814163A EP4626383A1 EP 4626383 A1 EP4626383 A1 EP 4626383A1 EP 23814163 A EP23814163 A EP 23814163A EP 4626383 A1 EP4626383 A1 EP 4626383A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- colorant
- bioactive glass
- hair
- advantageously
- particles
- 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.)
- Pending
Links
Classifications
-
- 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
- A61K8/25—Silicon; 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
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
-
- 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
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/0245—Specific shapes or structures not provided for by any of the groups of A61K8/0241
-
- 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
- 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
- A61K8/24—Phosphorous; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/06—Preparations for styling the hair, e.g. by temporary shaping or colouring
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/06—Preparations for styling the hair, e.g. by temporary shaping or colouring
- A61Q5/065—Preparations for temporary colouring the hair, e.g. direct dyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/10—Preparations for permanently dyeing the hair
-
- 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
-
- 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
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
-
- 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
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/42—Colour properties
- A61K2800/43—Pigments; Dyes
Definitions
- the invention relates to a dye, in particular hair dye, and the use of an alternative alkalizing agent in a cosmetic formulation, in particular a dye for dyeing keratin fibers.
- Keratin fibers are the main component of mammalian hair such as wool, fur, feathers, human hair and skin. When hair dyes are mentioned below, this is done for reasons of linguistic simplification, without being restricted to hair.
- hair dye is used as a generic term for "hair dyes in the true sense, i.e. for coloring hair” and for “skin dyes for coloring skin”.
- coloring is understood broadly in the context of this invention in the sense of "color change” and includes adding a color to the keratin fiber and reducing colors present in the keratin fiber.
- Dyes for coloring keratin fibers, especially hair and/or skin can be divided into different groups, particularly with regard to their dyeing mechanism and durability when washed, for example with detergents containing surfactants.
- the different groups are described below using hair dyes as an example.
- dyes in the narrower sense ie soluble dyes, and insoluble pigments.
- Those skilled in the art know which dye species are to be used in the various colorants.
- Hair dyes, their different modes of action and suitable dyes are well known, for example SA Da Franca, MF Dario, VB Esteves, AR Baby, MVR Velasco, “Types of Hair Dye and Their Mechanisms of Action”, Cosmetics 2015, 2(2), 110-126.
- non-oxidative hair dyes the hair is colored using dyes, for example so-called direct dyes, which, due to their positive charge, only attach themselves superficially to the negatively charged outer shell of the hair (temporary coloring) or, due to their small molecular size, penetrate the cuticle of the hair and adhere to the hair keratin (semi-permanent coloring).
- direct dyes which, due to their positive charge, only attach themselves superficially to the negatively charged outer shell of the hair (temporary coloring) or, due to their small molecular size, penetrate the cuticle of the hair and adhere to the hair keratin (semi-permanent coloring).
- non-oxidative hair coloring the natural pigments of the hair are not destroyed or chemically changed, but are drowned out by the applied dyes.
- Temporary coloring is mainly based on an electrostatic attraction between the negatively charged outer shell of the hair and mostly cationic dyes, which are supplied via a dye preparation.
- Semi-permanent coloring agents also include natural coloring agents based on plant components such as henna, camomile, bark extracts, etc. Temporary dyes and semi-permanent dyes are dyes that physically change color because the dyes are physically bound to and/or in the hair.
- oxidation hair dyes also include lightening dyes and bleaching agents, which lighten the natural pigments or destroy them oxidatively to produce a blonde color, and demi-permanent hair dyes, which combine the functions of permanent and semi-permanent dyes and are also referred to as "intensive tinting" or "coloration”.
- Concepts for permanent dyeing are also proposed mainly in the literature, which are based, for example, on reactive dyes that bind to functional groups in the hair, or on the formation of azo dyes from precursors.
- a permanent dye can be a one-component dye or a multi-component dye, in particular a two-component dye, all of which require an alkalizing agent to open the hair structure and an oxidizing agent to change the natural hair pigments and/or to create or bind the desired color.
- Oxidation dyes are used because of their intense colors and long-lasting coloring results, and the dyeing mechanism is well known (see e.g. 0. JX Morel, RM Christie, “Current Trends in the Chemistry of Permanent Hair Dyeing”, Chem. Rev. 2011, 111, 2537-2561.; A. Towns, “A review of developments in industrial hair colorant actives for oxidative dyes”, Coloration Technology 2021, 137, 301-335.
- At least one dye such as a dye with synthetic melanin or another easily oxidizable dye, can be applied to the hair, which reacts with atmospheric oxygen, either alone or with the help of a catalyst (e.g. manganese sulfate), to form natural-looking dyes, which can be particularly advantageous when hair is turning gray.
- a catalyst e.g. manganese sulfate
- Such dyes are also called “auto-oxidative dyes” and do not require such high pH values when dyeing. However, the higher the pH value, the faster and deeper the dye penetrates the hair and cannot be washed out as quickly. This mechanism of action has its limits for people with dark hair (red, brown, black). Oxidation dye precursors are necessary here, which is described below.
- oxidation dyes or permanent dyes are multi-component products, often two-component products, where active ingredients, auxiliary substances and additives are distributed over several components that are mixed together to form the ready-to-use dye.
- component 1 also called “coloring component”
- component 2 also called “oxidation component”
- Oxidation dyes cause a chemical color change and contain various active ingredients, auxiliary substances and additives.
- the auxiliary substances and additives include, for example, viscosity adjusters, carrier masses, solubilizers, fragrances, etc.
- colorants An active ingredient that is usually contained in the colorant component of the dye - exceptions to this may be so-called bleaching agents (see below) - are colorants.
- the colorants also called “coloring components”, in oxidation colorants include in particular color precursors, which are also called color bases or color precursors and are characterized by the fact that they are easily oxidized, possibly also shading agents (ie dyes or pigments that change the color slightly), possibly also direct dyes, which is generally known to those skilled in the art.
- the color precursors Due to their small size, the color precursors, which are often only slightly colored or colorless, can penetrate into the hair.
- the chemical color change is also called oxidative coloring because an oxidizing agent is needed to "develop" the color, for example hydrogen peroxide, atmospheric oxygen, special enzymes, amino compounds, etc.
- the color precursors form the actual dyes or color pigments with each other or by coupling with one or more coupler components, which cannot be washed out of the hair due to their size and poor water solubility.
- Oxidizing agents can have a dual function in permanent dyes, especially when they are used in higher concentrations (e.g. hydrogen peroxide content > 4% by weight). Part of the hydrogen peroxide causes the natural or artificial hair pigments to lighten, while the other part is needed for the dyeing process, i.e. the formation of the artificial dyes in the hair. With a lower hydrogen peroxide content (e.g. 1 to 4%), the lightening effect is less and essentially only the artificial dyes are formed in the hair. In a two-component dye, the oxidizing agent is usually found in the second component of the dye.
- oxidation dyes are adjusted to an alkaline pH value in the range 8 to 11, for which an alkalizing agent is added to the dye as an active ingredient - in the case of a two-component dye in usually contained in the colorant component.
- the alkalizing agent causes the cuticle layer to open and the hair to swell, allowing the coloring components, such as color precursors, nuancers, direct dyes, to penetrate into the hair.
- There they are oxidized by reaction with an oxidizing agent to form complex dyes or larger oligomers, which then become insoluble or whose diffusion is hindered due to their size.
- Some of the dyes produced can chemically bond with the hair keratin.
- the oxidation of the color precursors with the oxidizing agent creates the dye or artificial pigment.
- An increased pH value is also often necessary for the desired oxidation reaction.
- Ammonia can be used as an alkalizing agent to adjust the pH value in known dyes.
- the disadvantage of the known permanent dyes that use an ammonia-based alkalizing agent e.g. ammonium hydroxide
- ammonia-based alkalizing agent e.g. ammonium hydroxide
- Ammonia gas released during use can irritate the skin, eyes and, if inhaled, the lungs.
- the conventional alkalizing agent has a negative effect on the structure of the hair, as the swelling of the hair also allows other molecules to penetrate into the hair, thereby causing a potential allergen. The same applies to ammonia-based skin dyes.
- ammonia-free oxidation dyes that use amines as alkalizing agents, for example monoethanolamine (e.g. 2-ethanolamine) alone or in combination with other alkalizing agents such as amino acids, oligopeptides, acylamino acid derivatives, etc. - as disclosed in EP 2 178492 B1 , US 2014/0082856 A1 , US 2012/0180231 A1 , DE 19527121 A1 -, but their coloring power can be weaker compared to NHs-based oxidation dyes. It has also been shown that the The color lasts less in the hair, so the hair needs to be colored more often.
- the object of the invention is to provide a colorant, in particular a hair dye, which does not have the disadvantages mentioned above.
- the colorant should not have an unpleasant odor and as few irritating properties as possible and should advantageously have a high coloring power, color intensity, durability against washing out and exposure to light.
- the object of the invention is to provide a replacement for known alkalizing agents in a formulation for cosmetic products, in particular for the coloring of keratin fibers.
- a coloring agent in particular hair dye, which comprises an alkalizing agent for opening the cuticle layer of hair and/or for swelling hair and/or skin, wherein the alkalizing agent comprises or consists of particles of bioactive glass as alkalizing agent.
- the particles made of bioactive glass can also function as alkalizing agents to catalyze or start coupling reactions of or with color precursors.
- a dye according to the invention is preferably suitable for dyeing human hair and/or skin and is therefore a hair dye, whereby the term "hair dye” can also be a "skin dye” according to the definition given at the beginning. However, it can also be used for dyeing other keratin fibers, for example fur, wool and feathers, and also for dyeing other substrates.
- a hair dye in the true sense, a beneficial dye colors the hair.
- a beneficial dye colors the skin or, depending on the application site, the hair present there.
- a skin dye according to the invention can be used to specifically color the skin in the area of the eyebrows and thereby change the visual impression, for example to simulate thicker hair growth.
- the coloring agent according to the invention comprises or consists of particles made of bioactive glass.
- Particles made of bioactive glass means that the particles comprise or consist of bioactive glass.
- particles made of bioactive glass can surprisingly be used as alkalizing agents in a coloring agent because they are reactive in an aqueous medium, release ions and thus raise the pH value.
- As an alkalizing agent in a hair dye they open the cuticle of the hair and cause it to swell.
- an alkalizing agent in a skin dye it causes the skin to swell.
- particles made of bioactive glass take on the function of ammonia and/or known ammonia alternatives.
- particles made of bioactive glass are an alkalizing agent replacement for ammonia and/or ammonia alternatives within the scope of the invention, which is described in more detail below.
- bioactive glass can be used to specifically adjust the pH value of the hair or skin, for example by varying the concentration used, making the dye gentler on the skin and hair.
- Ammonia and ammonia alternatives are known alkalizing agents in dyes, especially hair dyes. “Ammonia alternatives” are agents that contain an alkalinizing agent equivalent to ammonia in a dye. have an effect, ie have the same effect. Ammonia alternatives can preferably be selected from the group comprising amines, for example monoethanolamine (eg 2-ethanolamine), amino acids, oligopeptides, acylamino acid derivatives.
- amines for example monoethanolamine (eg 2-ethanolamine), amino acids, oligopeptides, acylamino acid derivatives.
- alkalizing agents ammonia, organic amines such as monoethanolamine, monoisopropanolamine, 2-amino-2-methylpropanol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, 2-amino-2-methylbutanol, triethanolamine as well as ammonium, alkali and alkaline earth metal hydroxides, carbonates, hydrogen carbonates, hydroxycarbonates, silicates, in particular metasilicates, and alkali phosphates.
- organic amines such as monoethanolamine, monoisopropanolamine, 2-amino-2-methylpropanol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, 2-amino-2-methylbutanol
- triethanolamine as well as ammonium, alkali and alkaline earth metal
- an advantageous colorant with particles made of bioactive glass can have a neutral pH value, which in the context of the invention means a pH range of 6 to ⁇ 8, preferably 6.5 to 7.5.
- a neutral pH value which in the context of the invention means a pH range of 6 to ⁇ 8, preferably 6.5 to 7.5.
- the particles made of bioactive glass act as a local alkalizing agent, and the particles made of bioactive glass are thus advantageously a local alkalizing agent.
- alkalizing agent in connection with particles made of bioactive glass does not imply that the dye must have an overall basic pH value when used, unlike known alkalizing agents. It is assumed that this effect is caused or promoted by the fact that particles made of bioactive glass have a high affinity for keratin fibers, so that the pH value is increased, particularly locally on the hair or locally on the skin. while the pH value of the dye is neutral or only slightly alkaline. This can lead to less skin irritation when dyeing with the beneficial dye.
- the dyeing performance of a beneficial dye with a neutral pH value and the durability of the color over several washes with commercially available shampoo is surprisingly comparable to the results of conventional hair dyes based on ammonia or ammonia alternatives, where the dyeing process takes place in alkaline conditions at pH values > 10.
- the colorant can also have an overall alkaline pH value, in particular in the range 8 to 11, preferably 9 to 11 or 8 to 10.
- particles made of bioactive glass as alkalizing agents can be present in the colorant in addition to another alkalizing agent, for example ammonia and/or ammonia alternatives, in order to reduce their proportions. Ammonia and/or ammonia alternatives are therefore only partially replaced.
- the amount of ammonia and ammonia alternatives in the colorant is in total less than 5 wt.%, preferably less than 3 wt.%, preferably less than 2 wt.%, preferably less than 1 wt.%.
- particles made of bioactive glass are used as the sole alkalizing agent.
- the alkalizing agent in this variant of the colorant consists of particles made of bioactive glass, ie the alkalizing agent is bioactive glass.
- the dye is free of ammonia and/or free of ammonia alternatives.
- free of means that the components mentioned are not actively added to the dye, but can only be present in unavoidable traces or contaminations, which can be caused, for example, by impurities in the ingredients used.
- the reactivity of particles made of bioactive glass and thus the pH value of the dye when applied to hair and/or skin can be specifically adjusted by a number of measures, which are described in more detail below.
- the colorant has an alkaline pH in the range 8 to 11, preferably 9 to 11 or 8 to 10. In an alternative advantageous variant, the colorant has a neutral pH, preferably 6 to ⁇ 8, more preferably 6.5 to 7.5. In an advantageous embodiment of the colorant, the colorant comprises at least one coloring component and/or at least one oxidizing agent.
- the colorant comprises at least one coloring component.
- coloring component includes in principle all colorants (dyes, pigments, color precursors, etc.) known from colorants that are suitable for coloring keratin fibers, in particular hair and/or skin, temporarily, semi-permanently, demi-permanently or permanently.
- coloring components that can be used together with particles made of bioactive glass as alkalizing agents to open the cuticle of the hair and to swell hair and/or skin are suitable. These can be, for example, finished dyes (also called “direct dyes") or color precursors (i.e.
- coloring components include nuancers (also called color couplers), which are partially developed or partially oxidized color formers that give a color a certain color direction, as well as plant dyes.
- the colorant is a colorant selected from the group comprising temporary colorants, semi-permanent colorants, demi-permanent colorants, permanent colorants, which can preferably be colorants for hair and/or skin.
- temporary colorants semi-permanent colorants, demi-permanent colorants, permanent colorants, which can preferably be colorants for hair and/or skin.
- coloring components and the different mechanisms of action of the coloring are described in numerous publications, for example in SA Da Franca, MF Dario, VB Esteves, AR Baby, MVR Velasco, “Types of Hair Dye and Their Mechanisms of Action”, Cosmetics 2015, 2(2), 110-126, the disclosure content of which is included in full.
- coloring components particularly for permanent hair dyes, are described, among others, in 0. J. X. Morel, R. M. Christie, “Current Trends in the Chemistry of Permanent Hair Dyeing”, Chem. Rev. 2011, 111, 2537-2561 ; A.
- Coloring components are often based on substituted aromatic compounds such as phenol, aniline and toluene.
- Color precursors that dominate the market include 2,5-diaminotoluene as sulfate, p-phenylenediamine, p-aminophenol, 1-hydroxyethyl-4,5-diaminopyrazole as sulfate.
- the dye is a non-oxidative dye in which particles of bioactive glass act as an alkalizing agent to open the cuticle layer of the hair or to swell the hair and/or skin, so that at least one coloring component, for example a non-ionic dye, can penetrate better and deeper into the hair and/or skin. This can improve the color intensity and durability of the color compared to washes with temporary and/or semi-permanent dyes.
- the colorant has at least one oxidizing agent, i.e. it is an oxidizing colorant.
- the oxidizing colorant is a bleaching agent that contains hydrogen peroxide and/or another oxidizing agent to lighten the natural hair pigments.
- the particles made of bioactive glass open the cuticle layer of the hair, causing the hair to swell and the natural hair pigments or artificial pigments from previous colorings to be lightened or broken down, e.g. by hydrogen peroxide.
- Advantageous oxidizing agents and proportions are described below.
- Bleaching agents can also contain coloring components to avoid undesirable color impressions. The main focus of these agents, however, is the lightening or destruction of the natural hair pigments, whereby the intensity of the lightening can be controlled by the concentration of the oxidizing agent, here in particular hydrogen peroxide. The same applies to lightening agents.
- the colorant has at least one coloring component and at least one oxidizing agent.
- the oxidizing colorant contains a coloring component through which the color depth (lighter, darker) and/or color direction of hair and/or skin can be specifically and permanently changed.
- the oxidation dye with a coloring component is a one-component dye in which particles of bioactive glass act as an alkalizing agent to open the cuticle layer of the hair or to cause the hair and/or skin to swell.
- a coloring component to be embedded in the keratin fibers and, for example, Oxygen from the air or a catalyst can be used to oxidize the dyes into natural-like colors.
- oxidation dye with a coloring component is a multi-component dye, in which active ingredients, auxiliary substances and additives are distributed over several components that are mixed together to use the dye.
- One component contains at least one coloring component and preferably particles of bioactive glass as an alkalizing agent to open the cuticle of the hair or to swell it (as described above), and another component contains an oxidizing agent.
- the alkalizing agent can also be contained in another component.
- Multi-component dyes are known to those skilled in the art, and they know how to formulate the individual components and put them together for use.
- the component with the oxidizing agent can advantageously contain 0.5 to 12% by weight of hydrogen peroxide.
- the hydrogen peroxide content is to be selected according to the type of oxidative coloring agent, which is known to those skilled in the art.
- bleaching agents can contain up to 12% by weight of hydrogen peroxide, while other permanent coloring agents contain up to 9% by weight or up to 6% by weight, depending on the degree of lightening desired.
- an upper limit can also be 4% by weight of hydrogen peroxide.
- oxidizing agents can also be contained in the component, for example sodium iodate or sodium periodate, addition products of hydrogen peroxide, for example with urea, melanin, borates, etc.
- Hydrogen peroxide variants and substitutes for hydrogen peroxide are known in the specialist world.
- it can be a two-component dye, where “Component 1”, also called “colorant component”, is the comprises at least one coloring component and “Component 2”, also called “oxidation component”, comprises an oxidizing agent to form the color.
- “Component 1” and “Component 2” must be mixed together before use and together form the ready-to-use colorant.
- the particles of bioactive glass as an alkalizing agent can be contained in "Component 1" of the colorant together with at least one coloring component.
- the multi-component dye for example a two-component dye, comprises color precursors as the coloring component, i.e. dye precursors, for example easily oxidizable compounds, which due to their small molecular size can penetrate well and deeply through the opened cuticle layer into the swollen hair or skin.
- an oxidizing agent in particular hydrogen peroxide and/or known alternatives such as sodium iodate, sodium periodate, etc. (see above), triggers the oxidative process, whereby the active oxygen develops the color precursors into dye(s).
- the coloring component contains at least one other dye, for example a direct dye, in addition to color precursors.
- the colorant according to the invention contains particles made of bioactive glass.
- the average diameter of the particles i.e. the dso value, is advantageously ⁇ 20 pm, advantageously ⁇ 15 pm, preferably ⁇ 10 pm, preferably ⁇ 5 pm.
- a lower limit of the dso value which can be combined with all the upper limits mentioned, of advantageously 0.1 pm, preferably 0.25 pm, should not be undercut.
- the d99 value of the particle size is, in an advantageous variant, ⁇ 60 pm, advantageous ⁇ 50 pm, advantageous ⁇ 40 pm, advantageous ⁇ 30 pm, advantageous ⁇ 25 pm, advantageous ⁇ 20 pm, preferably ⁇ 15 pm.
- a lower limit of the dgg value that can be advantageously combined with all of the upper limits mentioned can be 1 pm.
- the dgg value indicates that 99% of the measured particles have a diameter equal to or smaller than the specified value.
- the particle size is determined by laser diffraction according to ISO 13320:2020 and is based on the phenomenon that the angular distribution of the intensity of the scattered light by a particle depends on the particle size, which is referred to as the diameter of an assumed sphere-like shape. Fraunhofer diffraction or Mie scattering is used as the theoretical basis, depending on the particle size.
- the particles of bioactive glass ie a powder of bioactive glass
- the particles of bioactive glass can be produced in a known manner, for example by means of dry grinding or wet grinding processes or a combination of both.
- the process for producing a glass powder can be carried out both dry and with aqueous and non-aqueous grinding media.
- the milling tool can be a ball mill, agitator ball mill, jet mill, pin mill, etc. mill or a combination of two or more of them.
- the particle size it is advantageous if the particles do not sediment in the colorant. It can be advantageous to choose the particle size according to the viscosity of the colorant or to adjust the viscosity to a desired particle size using appropriate additives, such as thickeners (e.g. xanthan).
- thickeners e.g. xanthan
- the proportion of particles made of bioactive glass in the colorant is 0.1 to 20% by weight, advantageously 0.5 to 15% by weight, advantageously 0.7 to 10% by weight.
- the proportion refers to the ready-to-use colorant.
- the proportion refers to the colorant component of the colorant, for example to "component 1".
- the proportion of bioactive glass particles required in a dye depends, among other things, on the type of dye, the reactivity of the bioactive glass, the particle size and the pH value desired during dyeing.
- the colorant contains particles of ceramized bioactive glass, i.e. particles of a bioactive glass ceramic.
- Glass ceramic is understood to be a material that has an amorphous phase and a crystalline phase. Through the targeted formation of certain crystal phases and the proportions of the crystalline phases and the amorphous phase, the reactivity of the bioactive glass ceramic, i.e. the speed of the ion exchange with a liquid medium and thus the setting of the pH value, can be controlled. The higher the reactivity, the fewer particles or powder is required to set the desired pH value. Particles of a bioactive glass ceramic are described in more detail below.
- particles of a bioactive glass ceramic can be contained in the colorant in addition to particles of bioactive glass.
- all of the particles can be ceramized, ie present as bioactive glass ceramic.
- the fact that the particles are made of bioactive glass or a bioactive glass ceramic does not necessarily mean that the particles consist of 100% glass or glass ceramic, although this may be the case in some embodiments of the invention.
- the surface of the particles may have a chemical modification, in particular a functionalization.
- the particles may have more hydrophilic or hydrophobic properties through reaction with corresponding silanes. This makes it possible to adapt the reactivity in a water- or oil-based formulation.
- bioactive glass or particles made of bioactive glass relate to bioactive glass or particles made of bioactive glass.
- the description of the particles made of bioactive glass according to the invention and their advantageous further developments relates both to colorants according to the invention with particles made of bioactive glass and to the inventive use of particles made of bioactive glass as alkalizing agents in a cosmetic formulation.
- bioactive glass advantageously also contains P2O5 and CaO, a hydroxyl carbonate apatite layer can form on the glass surface, which is very similar to the mineral phase of the bone. Therefore, such bioactive glasses can form a permanent physio-chemical bond to bone and tissue and are not encapsulated or rejected by the body.
- DE 102007033091 A1 proposes agents for coloring and/or changing the shape of keratin fibers that contain bioactive glass in order to reduce scalp irritation that occurs due to the highly alkaline conditions during the color-changing process.
- the color-changing agents contain common alkalizing agents such as alkali or alkaline earth hydroxides, ammonia or organic amines.
- EP 1709997 A1 describes hair straightening agents containing alkali or alkaline earth hydroxides that contain bioactive glass to reduce skin irritation during treatment.
- the bioactive glass comprises (in wt.% on an oxide basis): SiC>2 35 to 60
- the bioactive glass according to the invention consists of at least 90% by weight, more preferably at least 95% by weight, most preferably at least 99% by weight of the above-mentioned components or preferably of the components SiO2, Na2O, CaO, P2O5.
- the bioactive glass according to the invention consists of at least 90% by weight, more preferably at least 95% by weight, most preferably at least 99% by weight of the components SiO2, Na2O, CaO, P2O5, K2O, MgO.
- the bioactive glass on which the glass powder according to the invention is based can be a known bioactive glass.
- An example of a particularly advantageous bioactive glass that can be used advantageously in the context of the various aspects of the invention is available under the name Vitryxx® MD01 from SCHOTT AG.
- the bioactive glass is a ceramized bioactive glass, ie the bioactive glass is present as a bioactive glass ceramic, ie the particles according to the invention can be in the form of a glass ceramic.
- Glass ceramic is understood to mean a material that has an amorphous phase and a crystalline phase. Through targeted formation of certain crystal phases and the proportions of crystalline phases and amorphous phases, the reactivity of the bioactive glass ceramic, ie the speed of ion exchange with a liquid medium and thus the adjustment of the pH value, can be controlled. The higher the reactivity, the less powder is needed to adjust the desired pH value.
- an advantageous colorant with particles of bioactive glass - depending on its use concentration - can have a neutral pH value when applied, which in the context of the invention means a pH range of 6 to ⁇ 8, preferably 6.5 to 7.5, whereas known alkalizing agents determine the pH value of the entire colorant, usually setting a pH value of 8 to 11.
- bioactive glass is reactive and special particles of bioactive glass locally shift the pH value to the alkaline when in contact with the hair and/or skin and thereby open the cuticle of the hair or allow the hair and/or skin to swell and/or enable reactions to form color, while the pH value of the colorant is neutral overall.
- the particles of bioactive glass act as a local alkalizing agent.
- the bioactive glass comprises SiO2 as a network former and CaO and preferably comprises Na2O and/or P2O5 (see detailed description of the composition in connection with the first aspect of the invention).
- the particles comprise a bioactive glass ceramic.
- the cosmetic formulation, preferably the colorant, in an advantageous use comprises particles of ceramized bioactive glass.
- Fig. 1 Colorimetric measurement results of dyeing tests
- Table 1 shows compositions (information in the unit grams, g) of two exemplary embodiments (Ex.) and two comparative examples (Comp. Ex.) of a “colorant component” of a two-component colorant.
- the proportion of particles made of bioactive glass is 1 wt.% in the first embodiment (Example 1) and 5 wt.% in the second embodiment (Example 2).
- the dye was applied as evenly as possible to the hair sample and left to work in the hair for 30 minutes.
- the dye was then washed out with tap water for 3 minutes, the hair sample was dried with a hair dryer and the dyeing performance was measured using colorimetry.
- the dyed hair sample was then washed several times. For each wash cycle, the hair sample was washed with a commercially available shampoo for 2 minutes and rinsed with tap water for 20 seconds, dried with a hair dryer and again measured with a colorimeter. A total of 5 wash cycles were carried out. This was done with all hair samples.
- the hair samples were measured colorimetrically. Colorimetric methods are generally known. In this case, a “Lorentzen & Wettre Datacolor Elrepho spectrophotometer” was used, which is similar to the ISO2469 standard and was used under d/0° geometry. The light source was a pulsed xenon lamp with an “almost D65” filter.
- the device was calibrated using device-specific standards (black cavity, white calibration, UV calibration).
- a dried hair sample was positioned on the sample holder. 5 different positions on the hair sample were measured per measurement run. The computer calculated average values for the color coordinates a* b* and L* from the 5 individual measurements. The corresponding dE was calculated from these values (equation 1). Two such measurement runs were carried out per hair sample and the average value for dE was calculated from both. Each dye was tested on A total of two hair samples were tested, and from these two determined dE values, an average value was determined as the final result dE(end).
- Comparative Example 1 did not contain any alkalizing agent in the colorant component, the pH value was slightly acidic.
- Example 2 If the proportion of bioactive glass particles in the colorant is increased - for example to 5% by weight based on the colorant component; see Example 2 - the coloring performance and durability of the color are even improved compared to known colorants with ammonia or ammonia alternatives:
- the pH value during dyeing is comparable (pH 10.4). This proves that an advantageous dye with particles made of bioactive glass as an alkalizing agent leads to a better dyeing result and better color durability than known dyes at the same pH value of the dye.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022131545.2A DE102022131545A1 (de) | 2022-11-29 | 2022-11-29 | Färbemittel |
| PCT/EP2023/083252 WO2024115428A1 (de) | 2022-11-29 | 2023-11-28 | Haarfärbemittel mit bioaktivem glas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4626383A1 true EP4626383A1 (de) | 2025-10-08 |
Family
ID=88978341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23814163.4A Pending EP4626383A1 (de) | 2022-11-29 | 2023-11-28 | Haarfärbemittel mit bioaktivem glas |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4626383A1 (de) |
| KR (1) | KR20250114392A (de) |
| CN (1) | CN120282764A (de) |
| DE (1) | DE102022131545A1 (de) |
| WO (1) | WO2024115428A1 (de) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19527121A1 (de) | 1995-07-25 | 1997-01-30 | Henkel Kgaa | Oxidationsfärbemittel |
| AU6244799A (en) * | 1998-09-10 | 2000-04-03 | Us Biomaterials Corporation | Anti-inflammatory and antimicrobial uses for bioactive glass compositions |
| US7628997B1 (en) | 1999-07-09 | 2009-12-08 | Schott Ag | Preservatives for perishable preparations, in particular for cosmetic and pharmaceutical preparations |
| EP1272144A4 (de) | 2000-03-27 | 2006-04-26 | Schott Ag | NEUES KOSMETISCHES KöRPERREINIGUNGSMITTEL UND NAHRUNGSMITTELERGäNZUNGEN ENTHALTEND BIOAKTIVES GLAS UND METHODEN ZUR HERSTELLUNG UND VERWENDUNG DERSELBEN |
| DE10244783A1 (de) * | 2001-10-02 | 2003-04-24 | Schott Glas | Hochreines bioaktives Glas sowie Verfahren zu dessen Herstellung |
| DE10392362T5 (de) | 2002-03-07 | 2005-04-14 | Us Biomaterials Corp., Alachua | Verfahren zur Behandlung von Haaren |
| DE10303553B4 (de) | 2003-01-29 | 2008-07-31 | Schott Ag | Antitranspiranter Wirkstoff und dessen Verwendung |
| US7754194B2 (en) | 2005-04-06 | 2010-07-13 | L'oréal | Hair relaxer compositions utilizing bioactive glass |
| FR2915679B1 (fr) * | 2007-05-04 | 2009-07-10 | Oreal | Produit de soin a base de verre bioactif |
| DE102007033093A1 (de) * | 2007-07-13 | 2009-01-15 | Henkel Ag & Co. Kgaa | Mittel mit anti-irritierendem Wirkstoff |
| DE102007033091A1 (de) * | 2007-07-13 | 2009-01-15 | Henkel Ag & Co. Kgaa | Mittel mit anti-irritierendem Wirkstoff |
| DE102007039330A1 (de) | 2007-08-20 | 2009-02-26 | Henkel Ag & Co. Kgaa | Haarbehandlungsmittel |
| EP2476405A1 (de) | 2011-01-18 | 2012-07-18 | The Procter & Gamble Company | Haarfärbezusammensetzungen mit Alkalisierungsmittel ohne Ammoniak |
| ITMI20110883A1 (it) | 2011-05-18 | 2012-11-19 | Alfa Parf Group Spa | Tinture per capelli prive di idrossido d'ammonio contenenti un sistema tampone |
-
2022
- 2022-11-29 DE DE102022131545.2A patent/DE102022131545A1/de active Pending
-
2023
- 2023-11-28 EP EP23814163.4A patent/EP4626383A1/de active Pending
- 2023-11-28 KR KR1020257021545A patent/KR20250114392A/ko active Pending
- 2023-11-28 WO PCT/EP2023/083252 patent/WO2024115428A1/de not_active Ceased
- 2023-11-28 CN CN202380082387.7A patent/CN120282764A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022131545A1 (de) | 2024-05-29 |
| WO2024115428A1 (de) | 2024-06-06 |
| KR20250114392A (ko) | 2025-07-29 |
| CN120282764A (zh) | 2025-07-08 |
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