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
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
• • 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
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/31—Hydrocarbons
• • 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
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/34—Alcohols
  • A61K8/342—Alcohols having more than seven atoms in an unbroken chain
• • 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
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • A61K8/8147—Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
• • 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
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• • 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
  • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products 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
  • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
  • A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
• • 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
  • A61K2800/20—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
  • A61K2800/33—Free of surfactant
• • 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
  • A61K2800/60—Particulates further characterized by their structure or composition
  • A61K2800/65—Characterized by the composition of the particulate/core
  • A61K2800/652—The particulate/core comprising organic material
• • 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
  • A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
  • A61K2800/805—Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/007—Preparations for dry skin

Definitions

• the invention comprises an emulsifier-free, skin-conditioning cosmetic or dermatological preparation.
• the preparation is characterized by a special preparation, which in turn causes only the beneficial properties of a skin conditioning.
• the preparation is suitable for application on wet skin without being completely rinsed off, thus enabling creaming during showering.
• Cosmetic or dermatological preparations can be due to their
• Cosmetic preparations for the care of the skin are developed primarily for use on dry skin. These forms of preparations are known as leave-on preparations, such as creams, lotions or body milk. Often these are formulated as emulsions, especially W / O, O / W, O / W / O or W / O / W emulsions.
• Emulsions are generally understood to mean heterogeneous systems which consist of two liquids which are immiscible or only slightly miscible with one another, which are usually referred to as phases.
• one of the two liquids water or oil
• the liquids pure or as solutions
• an oil-in-water emulsion O / W emulsion, eg milk.
• the basic character for example electrical conductivity, sensor technology, dyeability of the continuous phase, an O / W emulsion is characterized by the water.
• a water-in-oil emulsion W / O emulsion, eg butter
• W / O emulsion eg butter
• the basic character being determined by the oil.
• rinse-off preparations are designed for use under shower or while bathing. In contrast, rinse-off preparations but less include the
• Care aspect considered as well as rinse-off can be applied, for example, in the shower.
• a characteristic of cosmetic products which is very important for consumers but difficult to quantify, is their texture and sensor technology.
• texture is understood to mean those properties of a cosmetic which can be traced back to the structure of the preparation, can be sensed by tactile and tactile sensations and, if appropriate, expressed in mechanical or rheological flow properties.
• the texture can be tested in particular by means of sensors.
• the texture of cosmetic products which optionally can be influenced with the aid of additives, is of almost the same significance for the consumer as their objectively ascertainable effects.
• the term "sensorics” refers to the scientific discipline that deals with the evaluation of cosmetic preparations based on sensory impressions.
• the sensory evaluation of a cosmetic is based on the visual, olfactory and haptic impressions.
• Olfactory impressions which can often be differentiated into initial odor (head note), main odor (middle note, body) and after-odor (ending).
• head note main odor
• body main odor
• after-odor ending
• the sensory analysis makes use of the possibility, the sensory
• a further object of the present invention was therefore to provide preparations which, in addition to the usual criteria for cosmetics, such as compatibility,
• shelf life and the like also provide the consumer essential, hitherto unknown cosmetic, especially sensory, benefits.
• the preparations sought should be suitable for use in the personal care sector, i. for an application on the whole body and thereby be sensory attractive.
• the invention is a skin conditioning, cosmetic or dermatological preparation obtainable by
• At least the mixture of hydrocarbons has a melting range from 5 ° C to 75 ° C, preferably up to 55 ° C (according to DSC),
• step b. One or more fatty alcohols, at least one wax (b1) and a mixture of liquid and solid hydrocarbons (b2) are preferably melted.
• the fatty alcohol (s) and the wax (s) preferably also have one
• Polyacrylic acids are to be predispersed in a lipid and then added to the water phase. According to the present invention, however, the polyacrylic acid polymers are dispersed in water contrary to this specification. This surprisingly leads to the fact that the polyacrylic acid polymers are more "activated" by this production method than when they are wetted with lipid.
• Ultraturax high energy input
• step a The incorporation of the polyacrylic acid polymers in the water phase in step a.) With the aid of a higher energy input with as complete as possible homogenization.
• step c. No complete homogenization is prescribed.
• the fatty alcohols are used together with the waxes (b1) and / or mixtures of liquid and solid hydrocarbons (b2)
• the temperature is based on the melting temperature of the individual components, preferably above 74 ° C.
• step c.) It was surprisingly found that if too much energy is supplied, ie complete homogenization, no satisfactory product is obtained during the mixing and mixing of the two phases. The product obtained is then too smooth, too fine and too amorphous.
• Essential to the invention is not complete homogenization. This means that by means of polarization microscopy investigations optically anisotropic, i. crystalline areas, a so-called granular structure can be found.
• two microscopic coverslips are placed at a distance of about 1 cm on a microscope slide. A small amount of the respective sample is placed between the coverslips and compressed to obtain a well-defined layer thickness of the preparation of about 0.15 mm.
• the samples are viewed through a transmitted light microscope equipped with two linear polarizing filters (e.g., Motic DM-143 FBGG stereomicroscope, with 4x zoom and 3 megapixel camera).
• two linear polarizing filters e.g., Motic DM-143 FBGG stereomicroscope, with 4x zoom and 3 megapixel camera.
• Figures 1, 2, 3 and 6 show the resulting images.
• Figures 1, 2 and 6 show preparations according to the invention having a recognizable granular structure, so-called crystallites.
• the preparations according to the invention have a so-called grainy performance and can be described as gritty.
• the gritty texture according to the invention is achieved if one or more crystallites with a particle size of 5 to 500 ⁇ m are contained on a 4 mm 2 surface of the preparation in a layer thickness of 0.15 mm (+/- 0.02 mm).
• the particle size is measured as the diameter of the particles.
• Particle size is to be understood as follows. Particles are
• three-dimensional structures that can be solid and / or liquid and have a structure that can be distinguished from the environment.
• the particles essentially consist of the fatty phase. It should be different from the environment as these particles are stabilized by the gel network (environment). Part of the fatty phase may also be in the gel network. Decisive is therefore not a 100% separation between gel network (environment) and fat phase but the inventive formation of the granular structure with a particle density of one or more crystallites having a particle size of 5 to 500 ⁇ on 4 mm 2 surface of the preparation.
• the particle size is clearly defined by the indication of the ball diameter, as is preferred according to the invention in the range from 5 to 500 ⁇ m.
• the majority of the fine-grained structures or crystallites does not consist of spheres, but of more or less irregularly shaped particles, which in one extreme case may be needle-shaped, and in the other platelet-shaped.
• the dispersity property of the individual particles can be described here by the particle volume and additional parameters such as sphericity (sphere similarity). Instead of the one-parameter function for spheres, one obtains a multi-parameter dispersity function, whose determination with large metrological effort is connected. Such an effort is justified only if it serves to gain essential information about product properties.
• the texture of the preparation according to the invention referred to as a granular structure, particles, crystallites or grittyness, therefore essentially comprises fatty phase constituents which differ visually from the environment.
• the forming care film was examined on the skin, once after using a rinse off product with integrated skin care aspects (Nivea cream soft shower gel) alone ( Figure 4) and once after using the same product (Nivea cream soft shower gel ) and subsequent application of the
• IR-ATR InfraRed-Attenuated Total Reflectance
• the care film of the present invention comprises a skin-forming film comprising one or more lipids and / or skin moisturizers.
• Figures 4 and 5 show the comparison, the more gray the discoloration the more lipids are on the skin.
• Figure 5 shows a very distinct dark gray
• the layer thickness of the film on the skin is in the range of up to 10 ⁇ , which can be derived from the infrared spectra and the measurement technique.
• the skin conditioning according to the invention comprises moisturizing
• the care film can be detected by means of IR-ATR measurement technology and ideally has a thickness of at least 1 ⁇ m to 10 ⁇ m.
• the skin conditioning according to the invention is characterized in that in the care film on the skin one or more lipids and / or skin moisturizing and no substances which damage the skin barrier, in particular no emulsifiers and / or surfactants, are contained.
• At least one wax is present or, in addition to fatty alcohol, at least one mixture of liquid and solid hydrocarbons is contained. Ideally, it contains fatty alcohol, wax and a mixture of hydrocarbons.
• Myristyl, cetearyl and / or stearyl alcohols are to be selected as fatty alcohols, Cera Microcristallina wax as preferred and Paraffinum Liquidum as hydrocarbon mixture.
• the fatty alcohols, waxes and hydrocarbon mixtures advantageously all have a melting range of 5 ° C. to 75 ° C., preferably up to 55 ° C. (according to DSC).
• DSC Densilic Recanning Calorimetry
• DSC is a thermal method for measuring emitted / absorbed heat quantity of a sample during isothermal operation, heating or cooling (see DIN 53765, DIN 51007, ASTM E 474, ASTM D 3418).
• DSC is a comparative measurement method that enables the determination of heat quantities of physical and chemical processes. If a material is his
• the method runs cyclically, so that after the first heating curve, a defined cooling takes place and then the sample is heated again in the specified temperature range. This gives two different kinds of information: In the first heating curve, all thermal effects, including the prehistory, are discernible. In the second heating curve, the history has been eliminated and the pure thermal behavior of the sample under defined cooling conditions can be evaluated.
• the melting range of fatty alcohols, waxes or hydrocarbons between 4.5 ° C and 75 ° C according to DSC is the range determined in the first heating curve.
• Fats and fat-like substances with a waxy consistency can also be used according to the invention as waxes.
• waxes include, inter alia, fats (triglycerides), mono and diglycerides, natural and synthetic waxes, fatty and wax alcohols, esters of fatty alcohols and fatty acids and fatty acid amides or any mixtures of this substance.
• the waxes are particularly preferably selected from the group of fats, in particular from the group of natural waxes:
• Palmitic Acid Stearic Acid
• the fatty alcohols used are preferably C14 to C22 fatty alcohols.
• the fatty alcohols are preferably selected from the group consisting of linear fatty alcohols, especially myristyl (C14H 30 O), cetyl alcohol (or palmityl) (C 6 H 34 0), stearyl alcohol (or
• Octadecyl C 8 H 38 0
• cetyl stearyl alcohol cetearyl alcohol
• behenyl alcohol lanolin alcohol
• lanolin alcohol a mixture of the alcohols cetyl alcohol hexadecanol
• stearyl alcohol octadecanol
• the proportion of total C14-22 fatty alcohols is advantageously from 3 to 14% by weight, in particular from 7 to 9% by weight, based on the total mass of the preparation.
• the proportions by weight are therefore to be selected advantageously in the range 0.5-1.5% by weight of C14-fatty alcohols (C14), 1.5-2.5% by weight of C18-fatty alcohols (C18) and 4-6% by weight of C16 / C18 fatty alcohols (C16 / 18), based on the total mass of the preparation.
• Hydrocarbon gels or mixtures of liquid and solid paraffin hydrocarbons are preferably used as hydrocarbon mixtures.
• the content is preferably on solid hydrocarbons in the hydrocarbon mixture between 1 and 50%, particularly preferably between 10 and 30%.
• the use of hydrocarbon mixtures which form fringe micelles or paracrystalline structures is advantageous.
• the proportion of the total hydrocarbon mixture is advantageously 1 to 50 wt.%, In particular 20 to 30 wt.%, Based on the total mass of the preparation.
• Fatty alcohol, in particular two or three fatty alcohols, according to the invention are necessarily included in the preparation.
• one or more waxes are added to the preparation.
• a hydrocarbon mixture of liquid and solid hydrocarbons which are liquid at room temperature may also be added.
• the preparation comprises all three building blocks, fatty alcohols, waxes and hydrocarbon mixture.
• the preparation and preparation according to the invention may then be admixed with cosmetic or dermatological substances known to the person skilled in the art, the addition of which may not impair the skin-conditioning properties of the preparation obtainable.
• thickeners, fillers and neutralizing agents are added to the preparations.
• Thickeners are advantageously suitable for stabilizing the system and enhance the skin-conditioning properties and the special skin feel of the preparations according to the invention.
• aluminum Starch Octenylsuccinat is preferably added, which also leads to an optimization of the skin feel by the skin care film looks a little more velvety.
• Sodium hydroxide solution is advantageously added as a neutralizing agent so that the thickeners can form their gel network and a stable system is formed.
• the preparation according to the invention is emulsifier-free. That the optionally acting as emulsifying polyacrylic acid polymers are not understood according to the invention as emulsifiers.
• Polyacrylic acid polymers are understood as meaning the polymers of acrylic and / or methacrylic acid known in cosmetics and acrylate crosspolymers.
• these are high molecular weight polymers (macromolecules) (> 1 Mg / mole) composed of a backbone of polyacrylic acid and small amounts
• Polyalkenylether cross-links exist. They are also referred to as carbomers. These water-soluble or dispersible polymers can cause a significant increase in viscosity in the liquid in which they are dissolved or dispersed. This is caused by the formation of carbomer microgels in the water.
• Particularly preferred polyacrylic acid polymers are, in addition to the carbomers, those acrylate crosspolymers which exert a polymeric emulsifier action.
• Polymer emulsifiers are mainly high polyacrylic acid polymers
• emulsifying polyacrylic acid polymers have a small lipophilic portion in addition to the hydrophilic body.
• acrylate crosspolymers which have the INCI name
• the polyacrylic acid polymers are particularly preferably selected from the group of acrylates / C 10-30 alkyl acrylate crosspolymers and / or carbomers. Especially preferred are acrylates / C 10-30 alkyl acrylate crosspolymer Pemulen® TR-1, e.g. from Lubrizol and Carbopol® 3128 from Lubrizol.
• a specific combination of polyacrylic acid polymers having an emulsifying action such as the Pemulen TR-1 with other polyacrylic acid polymers, such as Carbopol 3128, which improve the sensory properties and ensure the stability of the preparation, especially at higher temperatures, and a connection with free water.
• Particularly preferred herein is a combination of three polyacrylic acid polymers wherein a polyacrylic acid polymer has an emulsifying effect, e.g. the pemulen TR-1 or pemulen TR-2, with other polyacrylic acid containing the sensory
• polyacrylic acid polymers in particular three polyacrylic acid polymers which differ in their properties, are added.
• the proportion of total polyacrylic acid polymers is preferably 0.05 to 2 wt.%, In particular 0.2 to 1 wt.%, Based on the total mass of the preparation.
• two polyacrylic acid polymers or three polyacrylic acid polymers are understood to mean that one polyacrylic acid polymer differs from the other in at least one property.
• the substance group acrylates / C 10-30 alkyl acrylate crosspolymers comprises, for example, the commercial products pemulen TR-1 or TR-2.
• Carbomers are differentiated, for example, into types A, B and C. Differences here are, for example, their gels with different viscosities (United States Pharmacopoeia, USP).
• Also essential to the invention is a proportion of waxes or preferably a mixture of liquid and solid hydrocarbons having a melting range of 4.5 to 75 ° C, in particular up to 55 ° C according to DSC.
• oils it is possible with advantage to add non-polar to medium-polar lipids in the preparations according to the invention. Otherwise, the stability is more difficult to adjust due to the absence of emulsifiers.
• lipids is used as a generic term for fats, oils, waxes and the like, as is well known to the person skilled in the art. Also, the terms “oil phase ,, and” lipid phase , are used interchangeably.
• oils and fats differ in their polarity. It is proposed to assume the interfacial tension against water as a measure of the polarity index of an oil or an oil phase. In this case, the lower the interfacial tension between this oil phase and water, the greater the polarity of the relevant oil phase. According to the invention, the interfacial tension is considered as a possible measure of the polarity of a given oil component.
• the interfacial tension is the force acting on an imaginary line of one meter length located in the interface between two phases.
• the physical unit for this interfacial tension is calculated classically by the force / length relationship and is usually expressed in mN / m (millinewtons divided by meters). It has a positive connotation if it tries to reduce the interface. In the opposite case, it has a negative sign.
• Preferred lipids are moreover medicinal white oils and silicone oils, particularly preferred are naphtha-containing medicinal white oils, as well as their mixture products.
• the preparation according to the invention makes it possible for the first time to apply the care under the shower.
• the preparations according to the invention are advantageously formulated only with preservatives which have a water solubility of more than 0.75% at 20 ° C.
• the preparations according to the invention are furthermore preferably also free of surfactants.
• Surfactants are substances that are the surface tension of a liquid or the
• surfactants are described as amphiphilic substances that can dissolve organic, nonpolar substances in water. Due to their specific molecular structure, they provide at least one hydrophilic and one hydrophobic one
• hydrophilic fractions of a surfactant molecule are usually polar functional groups, for example -COO " , -OSO 3 2" , -SO 3 " , while the hydrophobic moieties generally represent nonpolar hydrocarbon radicals
• Anionic surfactants generally have carboxylate, sulfate or sulfonate groups as functional groups. In aqueous solution they form negatively charged organic ions in an acidic or neutral medium. Cationic surfactants are almost exclusively characterized by the presence of a quaternary ammonium group. In aqueous solution, they form positively charged organic ions in an acidic or neutral environment. Amphoteric surfactants contain both anionic and cationic groups and behave accordingly in aqueous solution depending on the pH as anionic or cationic surfactants. in the Strong acidic environment, they have a positive and in the alkaline environment, a negative charge.
• washing-active substances such as, for example, cationic surfactants, in particular quaternary ammonium compounds.
• a detergent substance is used in detergents, dishwashing detergents, shampoos, shower gels and denotes the proportion of the formulation which influences the washing or cleaning performance.
• Substances increase the "solubility" of fat and dirt particles in water that adhere to the laundry or body, they can be of natural or synthetic origin and are classified according to the nature of their charge in anionic, cationic, ampholytic or nonionic.
• Emulsifiers cause two immiscible liquids (for example, oil in water) to mix together to form an emulsion. Due to the amphiphilic character, they penetrate into the oil with their fat-soluble part. As a result of the hydrophilic part, the oil droplets that are now formed by stirring can be dispersed in the aqueous environment. "Primarily, emulsifiers have no detergent surfactants
• Emulsifiers and surfactants can damage the skin's barrier layer.
• the preparations are used on wet skin and especially for shaving.
• the preparation according to the invention can be used for skin conditioning.
• the forming care film is ideally at least 1 ⁇ thick (measured by IR-ATR measurement) and / or does not include skin barrier damaging substances, in particular no emulsifiers, surfactants, PEG 's and / or organohalogen compounds.
• Carbomer (Carbopol 981) 0.01 -0.1 0.02
• Glycerol 2-8 5.1 The constituents of the water phase are stirred at 25 ° C. for 4 min. And then heated to 75 ° C. with stirring.
• the components of the fatty phase are melted at 75 ° C and stirred.
• the water and fat phases are combined with stirring at 75 ° C, whereby a complete homogenization is avoided. This is achieved by setting a gritty texture with one or more crystallites having a particle size of 5 to 500 ⁇ m on a 4 mm 2 surface of the preparation in a layer thickness of 0.15 mm (+/- 0.02 mm).

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• 2013
  • 2013-04-15 DE DE102013206718.6A patent/DE102013206718A1/de not_active Withdrawn
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• 2014
  • 2014-03-25 US US14/784,387 patent/US9820919B2/en not_active Expired - Fee Related
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  • 2014-03-25 BR BR112015026115-9A patent/BR112015026115B1/pt not_active IP Right Cessation
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