CN113116736A - Inorganic composite powder, preparation method, application and cosmetic material composition - Google Patents

Inorganic composite powder, preparation method, application and cosmetic material composition Download PDF

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CN113116736A
CN113116736A CN201911425849.2A CN201911425849A CN113116736A CN 113116736 A CN113116736 A CN 113116736A CN 201911425849 A CN201911425849 A CN 201911425849A CN 113116736 A CN113116736 A CN 113116736A
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zinc oxide
inorganic composite
titanium dioxide
particles
composite powder
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李昌炫
洪俊基
金利映
郝逸辰
郑越川
李娟�
赵振勋
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New Life Cosmetics Technology Shanghai Co ltd
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New Life Cosmetics Technology Shanghai Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/27—Zinc; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0216—Solid or semisolid forms
    • A61K8/022—Powders; Compacted Powders
    • A61K8/0225—Granulated powders
    • 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
    • A61K8/29—Titanium; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
    • 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
    • A61Q19/08—Anti-ageing preparations
    • 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
    • A61K2800/59—Mixtures
    • A61K2800/592—Mixtures of compounds complementing their respective functions

Abstract

The embodiment of the application provides inorganic composite powder, a preparation method, application and a cosmetic material composition, and relates to the field of cosmetic materials. The inorganic composite powder is mainly composed of inorganic composite particles, and the inorganic composite particles comprise: the zinc oxide coating comprises a zinc oxide substrate and a titanium dioxide layer coated on the surface of the zinc oxide substrate, wherein the zinc oxide substrate mainly comprises zinc oxide particles, and the titanium dioxide layer mainly comprises titanium dioxide particles. The preparation method of the inorganic composite powder adopts a fusion spheroidizing machine to fuse zinc oxide particles and titanium dioxide particles until the titanium dioxide particles are attached to the surface of a zinc oxide base consisting of the zinc oxide particles and form a titanium dioxide layer. The cosmetic material composition contains the inorganic composite powder and other materials which can be applied to the skin. The inorganic composite powder, the preparation method, the application and the cosmetic material composition provided by the embodiment of the application can enhance the ultraviolet blocking effect, provide the infrared blocking effect and the blue light blocking effect, and have good use feeling.

Description

Inorganic composite powder, preparation method, application and cosmetic material composition
Technical Field
The application relates to the field of cosmetic materials, in particular to inorganic composite powder, a preparation method, application and a cosmetic material composition.
Background
Skin aging can be roughly classified into two types, i.e., inevitable intrinsic aging that occurs with the lapse of time and extrinsic aging that occurs with prolonged exposure to sunlight. Extrinsic aging is often caused by photo-aging caused by sunlight. As is well known, sunlight that reaches the earth's surface is roughly classified into ultraviolet (UVB: 280 to 320nm, UVA: 320 to 400nm), blue (blue light: 400 to 500nm), visible (visible light: 500 to 760nm), and infrared (IRA: 760 to 1400nm, IRB: 1400 to 3000nm, IRC: 3000nm to 1 mm). Among them, ultraviolet rays penetrating the epidermis and dermis cause erythema, skin cancer, and various skin aging, i.e., photoaging. Not only photoaging caused by ultraviolet rays, but also thermal aging of skin caused by infrared rays are major causes of photoaging of skin; in addition, modern people have close contact with electronic equipment in daily life, so that the exposure times to blue light are frequent, and high-energy wavelengths in the blue light region have a bad influence on the skin.
However, only ultraviolet ray blocking products for resisting photoaging are available on the market, and infrared ray blocking products for resisting thermal aging of skin and products capable of blocking blue light are difficult to find. Representative inorganic uv blocking agents at present include zinc oxide and titanium dioxide, which have been confirmed to have infrared blocking effect and blue blocking effect, but have poor blocking effect, and products prepared by mixing the two have reduced efficacy and poor feeling in use.
Therefore, there is a need for an inorganic material that can effectively block ultraviolet, infrared, and blue light.
Disclosure of Invention
An object of the embodiments of the present application is to provide an inorganic composite powder, a preparation method, an application, and a cosmetic composition, which can enhance an ultraviolet blocking effect, provide an infrared blocking effect and a blue blocking effect, and provide a good use feeling.
In a first aspect, an embodiment of the present application provides an inorganic composite powder, which is mainly composed of inorganic composite particles, where the inorganic composite particles include: the zinc oxide coating comprises a zinc oxide substrate and a titanium dioxide layer coated on the surface of the zinc oxide substrate, wherein the zinc oxide substrate mainly comprises zinc oxide particles, and the titanium dioxide layer mainly comprises titanium dioxide particles.
In the above-described technical solution, a zinc oxide substrate is composed of zinc oxide particles, which are one of inorganic ultraviolet blocking agents, as a substrate substance, and a titanium dioxide layer composed of titanium dioxide fine particles, which are used as a coating substance, is coated on the surface thereof, thereby forming inorganic composite particles. The inorganic composite particle integrates the blocking effect of zinc oxide and titanium dioxide, can enhance the ultraviolet blocking effect, can also provide the infrared blocking effect to resist photoaging and skin thermal aging, simultaneously prevents skin aging caused by blue light, and has triple blocking effects. And the applicant finds out in the process of implementing the application that: common metal oxide mixture often generates the cohesion phenomenon, if directly mix the powder of zinc oxide and titanium dioxide together, can reduce original ultraviolet barrier effect and reduce the sense of use of cosmetic materials because the powder is agglomerated, this application creatively compounds zinc oxide granule and titanium dioxide microparticle into nuclear shell structure, avoids the cohesion phenomenon when pure mixing, therefore the sense of use is good.
In one possible implementation, the titanium dioxide layer is coated on all or part of the surface of the zinc oxide substrate; optionally, the titanium dioxide is coated on the entire surface of the zinc oxide substrate.
In the technical scheme, the titanium dioxide layer is coated on the whole or partial surface of the zinc oxide substrate, so that a composite structure of the titanium dioxide layer and the zinc oxide substrate is ensured to be formed, the titanium dioxide and the zinc oxide can play a synergistic role, and a triple barrier effect is realized; the titanium dioxide is coated on the whole surface of the zinc oxide substrate, and the formed inorganic composite particles have good triple barrier effect.
In one possible implementation, the particle size of the zinc oxide particles is 0.2-1.0 μm; optionally, the particle size of the zinc oxide particles is 0.3-0.8 μm;
and/or the particle size of the titanium dioxide particles is 1-100 nm; optionally, the titanium dioxide fine particles have a particle size of 30 to 80 nm.
In the above technical solution, the particle size of the zinc oxide particles used as the base material may be 0.2 to 1.0 μm, and optionally 0.3 to 0.8 μm, and if the particle size of the zinc oxide particles is too small, for example, less than 0.2 μm, it is difficult to compose a zinc oxide base capable of coating titanium dioxide fine particles on the surface thereof, and if the particle size of the zinc oxide particles is too large, for example, more than 1.0 μm, it is not worth using as a raw material for cosmetic materials.
The particle size of the titanium dioxide particles used as the coating material can be 1-100 nm, optionally 30-80 nm, if the particle size of the titanium dioxide particles is too small, for example, less than 1nm, the titanium dioxide particles are difficult to be used as the required coating material and cannot be coated on the surface of the zinc oxide substrate, and if the particle size of the titanium dioxide particles is too large, for example, more than 100nm, the titanium dioxide particles are difficult to be used as the coating material and cannot be effectively coated on the surface of the zinc oxide substrate.
In one possible implementation mode, the particle size of the zinc oxide substrate is 0.2-3.0 μm; and/or the thickness of the titanium dioxide layer is 1-500 nm.
In the technical scheme, the particle size of the zinc oxide substrate and/or the thickness of the titanium dioxide layer are within a certain range, so that inorganic composite particles can be formed, and the triple barrier effect is good.
In a second aspect, embodiments of the present application provide a method for preparing an inorganic composite powder, in which a fusion spheroidizing machine (Mechano-fusion) is used to fuse zinc oxide particles and titanium dioxide microparticles until the titanium dioxide microparticles are attached to a zinc oxide base surface composed of the zinc oxide particles and form a titanium dioxide layer.
In the above technical solution, the zinc oxide particles and the titanium dioxide particles are mixed at a high speed by using a fusion spheroidizing machine of dry coating, so that the titanium dioxide particles are coated on the whole or part of the surface of the zinc oxide particles to form inorganic composite particles. The preparation method can prevent powder agglomeration caused by mixing zinc oxide particles and titanium dioxide particles, and avoid the problems of reduced ultraviolet blocking effect and poor use feeling of cosmetic material.
In one possible implementation mode, the feeding mass ratio of the zinc oxide particles to the titanium dioxide particles is 1-99%: 99 to 1 percent; optionally, the charging mass ratio of the zinc oxide particles to the titanium dioxide particles is 30-70%: 70% -30%;
and/or the working conditions of the fusion spheroidizing machine are as follows: the rotating speed of the chamber is 2000-5000 rpm, and the time is 1-4 hours.
In the technical scheme, the feeding mass ratio of the zinc oxide particles to the titanium dioxide particles is 1-99%: 99% -1%, and optionally 30% -70%: 70 to 30 percent of the inorganic composite powder can be prepared. The fusion spheroidizing machine can realize dry coating by adopting the working conditions, thereby forming inorganic composite powder.
In a third aspect, an embodiment of the present application provides an inorganic composite powder, which is prepared by using the preparation method of the inorganic composite powder provided in the second aspect.
In the technical scheme, the ultraviolet light barrier film can not only exert the ultraviolet light (280-400 nm) barrier effect to the maximum extent, but also simultaneously has the triple barrier effect of blocking infrared light (760-1400 nm) and blue light (400-500 nm).
In a fourth aspect, embodiments of the present application provide an application of the inorganic composite powder provided in the first aspect or the third aspect, where the inorganic composite powder is used to block ultraviolet rays, infrared rays, and blue light simultaneously.
In the technical scheme, the inorganic composite powder is used in skin products, so that triple barrier effects of blocking ultraviolet rays, infrared rays and blue light can be achieved, and the application range is wide.
In a fifth aspect, the present embodiments provide a cosmetic composition comprising the inorganic composite powder provided in the first or third aspect and other materials that can be applied to the skin.
In the technical scheme, the cosmetic material composition containing the inorganic composite powder as the effective component has triple barrier effects of blocking ultraviolet rays, infrared rays and blue light, and is good in use feeling.
In one possible implementation, the inorganic composite powder comprises 0.01 wt% to 50 wt% of the inorganic composite powder based on the composition; optionally, it comprises 5 wt% to 20 wt% of inorganic composite powder based on the composition.
In the above technical solution, the cosmetic composition may include 0.01 wt% to 50 wt%, optionally 5 wt% to 20 wt% of the inorganic composite powder based on the total weight, when the content of the inorganic composite powder in the cosmetic composition is less than 0.01 wt%, the obtained triple barrier effect of ultraviolet, infrared, and blue light is very slight, and when the content of the inorganic composite powder in the cosmetic composition exceeds 50 wt%, the product value may be not high due to the reduction of the use feeling.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is an electron microscope photograph of the inorganic composite powder of example 1 of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The inorganic composite powder, the production method, the application, and the cosmetic composition according to the examples of the present application will be specifically described below.
Embodiments provide an inorganic composite particle, including: the zinc oxide coating comprises a zinc oxide substrate and a titanium dioxide layer coated on the surface of the zinc oxide substrate, wherein the zinc oxide substrate mainly comprises zinc oxide particles, and the titanium dioxide layer mainly comprises titanium dioxide particles. In general, the zinc oxide substrate is a single zinc oxide particle or is formed by combining (for example, melting and bonding) two or more zinc oxide particles, and the shape of the zinc oxide substrate can be any shape such as a sphere, a gourd and the like; the titanium dioxide layer can be a single-layer structure or a multi-layer structure formed by arranging and combining (such as melting and bonding) titanium dioxide particles; the titanium dioxide layer is coated on all or part of the surface of the zinc oxide substrate, for example, the titanium dioxide is coated on all the surface of the zinc oxide substrate. The shape of the inorganic composite particles composed of the zinc oxide substrate and the titanium dioxide layer is mainly related to the shape of the zinc oxide substrate, and generally, the inorganic composite particles are spherical or nearly spherical. In the present application, the term "particle diameter" refers to the diameter of spherical particles or the equivalent spherical diameter of non-spherical particles.
In some embodiments of the present application, the zinc oxide particles can have a particle size of 0.2 to 1.0 μm, optionally 0.3 to 0.8 μm, as an example 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 or 1.0 μm. The titanium dioxide particles may have a particle size of 1 to 100nm, alternatively, the titanium dioxide particles may have a particle size of 30 to 80nm, and as an example, the titanium dioxide particles have a particle size of 1nm, 10nm, 20nm, 30nm, 40nm, 50nm, 60nm, 70nm, 80nm, 90nm, or 100 nm. It should be noted that there is no specific corresponding relationship between the particle sizes of the zinc oxide particles and the titanium dioxide particles, and it is only necessary that the titanium dioxide particles can be coated on the surface of the zinc oxide particles to form a granular product.
In some embodiments of the present application, the zinc oxide substrate has a particle size of 0.2 to 3.0 μm; the thickness of the titanium dioxide layer is 1-500 nm. The particle size of the zinc oxide substrate and the thickness of the titanium dioxide layer are not particularly limited, and the particles formed by compounding the zinc oxide substrate and the titanium dioxide layer are only required to meet the use requirements of the cosmetic material.
The embodiment of the present application also provides an inorganic composite powder, because the powder is an aggregate composed of a large number of small particulate matters, the inorganic composite powder of the embodiment of the present application mainly comprises a plurality of inorganic composite particles, for example, the inorganic composite powder is composed of a large number of inorganic composite particles, or is composed of a large number of inorganic composite particles and other particles. The shape and size of the inorganic composite particles in the inorganic composite powder may be the same or different, and in order to ensure the use feeling and the barrier effect of the inorganic composite powder, the shape and size of the inorganic composite particles in the inorganic composite powder may be the same or similar.
The embodiment of the application also provides a preparation method of the inorganic composite particles, which adopts a fusion spheroidizing machine to fuse zinc oxide particles and titanium dioxide particles until the titanium dioxide particles are attached to the surface of a zinc oxide matrix consisting of the zinc oxide particles and a titanium dioxide layer is formed. The fusion spheroidizing machine is the existing equipment for coating the nano-scale particles on the surfaces of the micron-scale particles, the material rotates at a high speed in a rotor, is tightly attached to the wall of the machine under the action of centrifugal force, and passes through between an extrusion head of the rotor and an extrusion head of a stator at a high speed, and in the process, the material is simultaneously subjected to the action of extrusion force and shearing force; due to high-speed rotation, the material is circulated between the rotor and the stator and is continuously subjected to the action of extrusion force and shearing force, and the particle surface reaches a mechanical melting state under the action of the friction force, so that the nano-particles are coated on the micron-sized particles.
In some embodiments of the present application, the zinc oxide particles have a particle size of 0.2 to 1.0 μm; optionally, the zinc oxide particles have a particle size of 0.3 to 0.8 μm. The particle size of the titanium dioxide particles is 1 to 100 nm; optionally, the titanium dioxide fine particles have a particle size of 30 to 80 nm.
In some embodiments of the present application, the ratio of the mass of the zinc oxide particles to the mass of the titanium dioxide particles is 1% to 99%: 99 to 1 percent; optionally, the charging mass ratio of the zinc oxide particles to the titanium dioxide particles is 30-70%: 70 to 30 percent. As an alternative example, the feeding mass ratio of the zinc oxide particles to the titanium dioxide particles is 1%: 99%, 10%: 90% and 20%: 80% and 30%: 70% and 40%: 60% and 50%: 50% and 60%: 40% and 70%: 30% and 80%: 20% and 90%: 10% or 99%: 1 percent.
The working conditions of the fusion spheroidizing machine are not particularly limited in the embodiment of the application, and only inorganic composite particles as many as possible can be formed by raw materials, usually. The working conditions of the fusion spheroidizing machine are as follows: the rotating speed of the chamber is 2000-5000 rpm, and the time is 1-4 hours.
The embodiment of the present application further provides an inorganic composite particle, which is prepared by the above method for preparing an inorganic composite particle, and the inorganic composite particle includes: the zinc oxide base, and the titanium dioxide layer of cladding in zinc oxide base surface. In addition, the embodiment of the application also provides inorganic composite powder, which mainly comprises the inorganic composite particles. In general, when inorganic composite particles are prepared, a large number of inorganic composite particles are prepared at the same time, that is, the method for preparing the inorganic composite particles in the examples of the present application is a method for preparing an inorganic composite powder. In actual production, the inorganic composite powder prepared by the above preparation method of the embodiments of the present application is generally composed of inorganic composite particles and a small amount of zinc oxide particles and titanium dioxide fine particles.
The embodiment of the application also provides an application of the inorganic composite powder, and the inorganic composite powder is used for simultaneously blocking ultraviolet rays, infrared rays and blue light.
As a specific application mode, the present application example provides a cosmetic material composition, which contains the inorganic composite powder and other materials that can be applied to the skin. The cosmetic material composition generally comprises 0.01 to 50 wt% of inorganic composite powder based on the composition; optionally, it comprises 5 wt% to 20 wt% of inorganic composite powder based on the composition. The effective component in the inorganic composite powder is the inorganic composite particles, so that the amount of the inorganic composite powder in the cosmetic material composition is the total amount of the inorganic composite particles, thereby ensuring the barrier effect of the cosmetic material composition. The cosmetic material composition is a water-in-oil type solution, suspension, emulsion, paste, gel, paste, wax-like paste, emulsion, powder, oil, powder foundation, emulsion foundation, wax-like foundation or spray formulation, that is, the cosmetic material composition comprises an inorganic composite powder and a material realizing the corresponding formulation, or the cosmetic material composition is an oil-in-water type solution, suspension, emulsion, paste, gel, paste, wax-like paste, emulsion, powder, oil, powder foundation, emulsion foundation, wax-like foundation or spray formulation, that is, the cosmetic material composition comprises an inorganic composite powder and a material realizing the corresponding formulation.
The features and properties of the present application are described in further detail below with reference to examples.
Example 1
The embodiment provides an inorganic composite powder, which is prepared according to the following preparation method:
the zinc oxide powder (composed of pure zinc oxide particles) used as the base material was XZ-300F (Sakai chemical co. Japan) having an average particle diameter of about 1 μm, and the titanium oxide powder (composed of pure titanium oxide fine particles) used as the coating material was STR-100W (Sakai chemical co. Japan) having an average particle diameter of 80 nm. The fusion spheroidizing machine for realizing dry coating was a fusion spheroidizing machine (mecano-fusion, model: AMS-mini) of Japanese Hosokawa micron co..
100g of zinc oxide powder and 100g of titanium dioxide powder are added into a fusion spheroidizing machine and then react for 2 hours at the rotating speed of a 3000rpm chamber, so that the inorganic composite powder is prepared.
Fig. 1 is an electron microscope picture of the inorganic composite powder of the present embodiment, wherein the right picture is a high power electron microscope picture. As can be seen from fig. 1, the titanium dioxide fine particles are successfully coated on the surfaces of the zinc oxide particles to form inorganic composite particles, the inorganic composite powder is almost all inorganic composite particles coated with the titanium dioxide fine particles, the shapes of all the inorganic composite particles are different but close to spherical, the sizes of all the inorganic composite particles are different (1 to 4 μm), but the difference is not large, and the average particle size of the inorganic composite powder is about 2 μm.
Comparative example 1
This comparative example provides an inorganic powder using the same zinc oxide powder (consisting of mono-pure zinc oxide particles) as in example 1: XZ-300F (Sakai chemical co. Japan).
Comparative example 2
This comparative example provides an inorganic powder using the same titanium dioxide powder (consisting of simple titanium dioxide fine particles) as in example 1: STR-100W (Sakai chemical co. Japan) was used.
Comparative example 3
This comparative example provides an inorganic mixed powder prepared using the same zinc oxide powder and titanium dioxide powder as in example 1, specifically, the zinc oxide powder and titanium dioxide powder were fed into a henscell mixer (henscell mixer) and simply mixed at a stirring speed of 600rpm for 10 minutes to obtain an inorganic mixed powder.
According to the electron microscope picture of the inorganic mixed powder of this comparative example, it can be seen that: some of the zinc oxide particles and titanium dioxide particles agglomerate into macromolecular particles.
The correspondence between the raw materials and the samples used in example 1 and comparative examples 1 to 3 is shown in table 1.
TABLE 1 correspondence of raw materials and products for different examples and comparative examples
Figure BDA0002350022340000091
According to the formulation shown in Table 2, cosmetic material compositions of example 2 and comparative examples 4 to 6 were prepared using the samples of the above example 1 and comparative examples 1 to 3, respectively: cosmetic compositions containing 10 wt% of the inorganic composite powder of example 1, i.e., example 2, were prepared in the same manner as in comparative examples 4 to 6, i.e., cosmetic compositions containing 10 wt% of the inorganic composite powder of comparative examples 1 to 3, respectively. The preparation method comprises the following steps: first, the aqueous phase was uniformly dissolved, and the inorganic composite powder or inorganic powder was added to the oil phase alone, and then uniformly dispersed for 10 minutes with a stirrer at a stirring speed of 1000rpm, and then slowly added to the aqueous phase and emulsified for 5 minutes with a homogenizer at a stirring speed of 3000rpm, to prepare a cosmetic composition.
TABLE 2 formulation of cosmetic Material compositions of different examples and comparative examples
Figure BDA0002350022340000101
First, the sunlight blocking effect of the inorganic composite powder of example 1 was verified by the following test.
(1) Ultraviolet blocking effect
The ultraviolet blocking effects of the inorganic composite powder of example 1 and the inorganic powders of comparative examples 1 to 3 were examined and compared using an SPF 290analyzer (optometrics Inc, usa) as an in-vitro test apparatus.
The specific detection method comprises the following steps: mixing the powder sample and vaseline in a ratio of 1:1, and uniformly dispersed at a ratio of 2mg/cm2Uniformly spread on a surgical tape (3M co.), dried for 15-20 minutes, and then measured for 3 spectral reflectances using an SPF 290analyzer to obtain SPF (sub protection factor) and PA (protection factor of UVA) effects as average values. The results are shown in Table 3.
TABLE 3 ultraviolet blocking Effect of different powder samples
Sample (I) SPF PA
Example 1 22.54 21.23
Comparative example 1 9.30 7.65
Comparative example 2 8.25 8.74
Comparative example 3 16.87 15.78
As can be seen from table 3, the powder of comparative example 3 in which the zinc oxide powder and the titanium dioxide powder were simply mixed exhibited a higher ultraviolet blocking effect than the pure zinc oxide powder of comparative example 1 and the pure titanium dioxide powder of comparative example 2, and it was found that the ultraviolet blocking effect of the powder could be improved only by simply mixing the zinc oxide powder and the titanium dioxide powder.
In addition, the reason why the inorganic composite powder of example 1 has an SPF increased by about 33% and a PA increased by about 34% as compared with the inorganic mixed powder of comparative example 3 can be explained that the ultraviolet blocking effect is reduced by the simple mixed powder due to the agglomeration of the powder. Therefore, the composite powder having a coating structure made of the zinc oxide powder and the titanium dioxide powder exhibits a higher ultraviolet-blocking effect than the powder obtained by simply mixing, that is, the inorganic composite powder of the present example exhibits an effect of improving the light aging resistance.
(2) Infrared ray blocking effect
Spectral reflectances of the inorganic composite powder of example 1 and the inorganic powders of comparative examples 1 to 3 were measured using a near infrared spectrophotometer (NIR specific photometer, ASD inc., usa) and compared, and the wavelength range of the infrared region was 760 to 1400nm, meaning that the higher the reflectance in this wavelength range, the better the infrared blocking function.
The specific detection method comprises the following steps: mixing different powder samples with vaseline in a ratio of 1:1, and uniformly dispersed at a ratio of 2mg/cm2Uniformly coating the mixture on a surgical adhesive tape (3M co.), drying for 15-20 minutes, detecting 3-time spectral reflectivity by using a near infrared spectrophotometer, and averaging to obtain the infrared blocking effect. The results are shown in Table 4.
TABLE 4 Infrared ray blocking Effect of different powder samples
Sample (I) Spectral reflectance (%) of 760 to 1400nm
Example 1 25.45
Comparative example 1 9.80
Comparative example 2 11.22
Comparative example 3 16.54
As can be seen from table 4, the powder obtained by simply mixing the zinc oxide powder and the titanium dioxide powder in comparative example 3 exhibited a higher infrared blocking effect than the pure zinc oxide powder in comparative example 1 and the pure titanium dioxide powder in comparative example 2, and it was found that the infrared blocking effect could be improved by simply mixing the zinc oxide powder and the titanium dioxide powder.
In addition, the reason why the infrared ray blocking effect of the inorganic composite powder of example 1 was increased by 53% as compared with the inorganic mixed powder of comparative example 3 can be explained that the infrared ray blocking effect was lowered due to agglomeration of the powder by simply mixing the powder. Therefore, the composite powder having a coating structure made of the zinc oxide powder and the titanium dioxide powder exhibits a higher infrared ray blocking effect than the powder obtained by simply mixing, that is, the inorganic composite powder of the present example exhibits an effect of improving the thermal aging resistance of the skin.
(3) Blue light blocking effect
The blue light blocking effect comparison was performed on four kinds of powders, i.e., the single powders of zinc oxide and titanium dioxide obtained in example 1 and comparative examples 1 to 3, the mixed powder prepared according to comparative example 3, and the like.
In order to evaluate the blue light blocking effect, the spectral reflectances of the inorganic composite powder of example 1 and the inorganic powders of comparative examples 1 to 3 were measured using an SPR-4001 Spectroradiometer (Spectrophotometer, Luzchem co., Canada) and compared. The wavelength range of the blue light region is 400-500 nm, and in the wavelength range, the higher the reflectivity is, the better the blue light blocking function is.
The specific detection method comprises the following steps: mixing different powder samples with vaseline at a ratio of 1:1, uniformly dispersing, and mixing at a ratio of 2mg/cm2Uniformly coating the mixture on a surgical adhesive tape (3M co.), drying for 15-20 minutes, detecting 3 spectral reflectances by using an SPR-4001 spectral radiometer, and averaging to obtain the blue light blocking effect. The results are shown in Table 5.
TABLE 5 blue light blocking Effect of different powder samples
Sample (I) Spectral reflectance (%) of 400 to 500nm
Example 1 28.94
Comparative example 1 10.24
Comparative example 2 9.80
Comparative example 3 20.12
As can be seen from table 5, the powder in which the zinc oxide powder and the titanium dioxide powder were simply mixed in comparative example 3 showed a higher blue light blocking effect than the pure zinc oxide powder in comparative example 1 and the pure titanium dioxide powder in comparative example 2, and thus it was found that the blue light blocking effect could be improved only by simply mixing the zinc oxide powder and the titanium dioxide powder.
In addition, the inorganic composite powder of example 1 increased the blue light blocking effect by about 43% compared to the inorganic mixed powder of comparative example 3, which can be explained as the simply mixed powder may cause the blue light blocking effect to be decreased due to powder agglomeration. The composite powder with the coating structure prepared from the zinc oxide powder and the titanium dioxide powder has a higher blue light blocking effect compared with the powder prepared by simply mixing, namely the inorganic composite powder of the embodiment has an effect of improving aging resistance.
Second, the sunlight blocking effect of the inorganic composite powder of example 2 was verified by the following test.
(1) Ultraviolet blocking effect
The ultraviolet blocking effects of the cosmetic material compositions of example 2 and comparative examples 4 to 6 were measured using an SPF 290analyzer, and compared. The specific detection method was the same as the detection method of the ultraviolet blocking effect described above, and the results are shown in table 6.
TABLE 6 UV-blocking Effect of different composition samples
Sample (I) SPF PA
Example 2 37.24 30.26
Comparative example 4 24.20 16.31
Comparative example 5 23.15 15.55
Comparative example 6 31.57 24.31
As can be seen from table 6, the composition sample of comparative example 6 containing a simple mixed powder exhibited a higher ultraviolet blocking effect than the composition sample of comparative example 4 containing a single pure zinc oxide powder and the composition sample of comparative example 5 containing a single titanium dioxide powder, and thus it was found that the ultraviolet blocking effect of the cosmetic material composition could be improved only by simple mixing of the zinc oxide powder and the titanium dioxide powder.
In addition, the reason why the SPF of the composition sample of example 2 containing the composite powder of example 1 was improved by about 17% and the PA was improved by about 24% as compared with the composition sample of comparative example 6 can be explained that the ultraviolet blocking effect was reduced by the simple mixing of the powders due to the agglomeration of the powders. Therefore, the cosmetic material composition containing the composite powder formed using the zinc oxide powder and the titanium dioxide powder exhibits a higher ultraviolet blocking effect, that is, the inorganic composite powder of the present example exhibits an effect of improving the anti-photoaging effect, as compared to the cosmetic material composition containing the simply mixed powder.
(2) Infrared ray blocking effect
The cosmetic material compositions of example 2 and comparative examples 4 to 6 were examined for infrared ray blocking effect using a near infrared spectrophotometer and compared. The specific detection method was the same as the detection method of the ultraviolet blocking effect described above, and the results are shown in table 7.
TABLE 7 Infrared rejection Effect of samples of different compositions
Sample (I) Spectral reflectance (%) of 760 to 1400nm
Example 2 30.64
Comparative example 4 14.74
Comparative example 5 16.15
Comparative example 6 21.31
As can be seen from table 7, the composition sample of comparative example 6 containing a simple mixed powder exhibited a higher infrared ray blocking effect than the composition sample of comparative example 4 containing a single pure zinc oxide powder and the composition sample of comparative example 5 containing a single titanium dioxide powder, and thus it was found that the infrared ray blocking effect of the cosmetic material composition could be improved only by simple mixing of the zinc oxide powder and the titanium dioxide powder.
In addition, the composition sample of example 2 containing the composite powder of example 1 was improved in the infrared ray blocking effect by about 43% as compared with the composition sample of comparative example 6, which can be explained by that the infrared ray blocking effect was reduced due to the agglomeration of the powder by simply mixing the powder. Therefore, the cosmetic material composition comprising the composite powder formed using the zinc oxide powder and the titanium dioxide powder exhibits a higher infrared ray blocking effect, that is, the inorganic composite powder of the present example exhibits an effect of improving the thermal aging resistance of the skin, as compared to the composition comprising the simply mixed powder.
(3) Blue light blocking effect
Blue light blocking effects of the cosmetic material compositions of example 2 and comparative examples 4 to 6 were measured using an SPR-4001 spectroradiometer and compared. The specific detection method is the same as the detection method of the blue light blocking effect, and the results are shown in table 8.
TABLE 8 blue light blocking Effect of different composition samples
Figure BDA0002350022340000151
Figure BDA0002350022340000161
As can be seen from table 8, the composition sample of comparative example 6 containing a simple mixed powder exhibited a higher blue light blocking effect than the composition sample of comparative example 4 containing a single pure zinc oxide powder and the composition sample of comparative example 5 containing a single titanium dioxide powder, and thus it was found that the blue light blocking effect of the cosmetic material composition could be improved only by simple mixing of the zinc oxide powder and the titanium dioxide powder.
In addition, the composition sample of example 2 containing the composite powder of example 1 showed an improvement in blue light blocking effect of about 43% compared to the composition sample of comparative example 6, which can be explained by the fact that the simply mixed powder may cause a reduction in blue light blocking effect due to powder agglomeration. Therefore, the cosmetic material composition containing the composite powder formed using the zinc oxide powder and the titanium dioxide powder exhibits a higher blue light-blocking effect, that is, the inorganic composite powder of the present example exhibits an effect of improving the anti-aging effect, as compared to the cosmetic material composition containing the simply mixed powder.
As can be seen from the above test results, the inorganic composite particles formed of a zinc oxide substrate and a titanium dioxide layer coated on the surface thereof according to the embodiments of the present application, and the cosmetic composition containing the same, can prevent the problem of the decrease in the blocking effect of ultraviolet, infrared and blue light due to the agglomeration of powder, can enhance the blocking effect of ultraviolet light, and provide both the blocking effect of infrared light and the blocking effect of blue light.
In summary, the inorganic composite powder, the preparation method, the application and the cosmetic material composition provided by the embodiment of the application can enhance the ultraviolet blocking effect, provide the infrared blocking effect and the blue light blocking effect, and have good use feeling.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An inorganic composite powder, characterized in that it consists essentially of inorganic composite particles, the inorganic composite particles comprising: the zinc oxide coating comprises a zinc oxide substrate and a titanium dioxide layer coated on the surface of the zinc oxide substrate, wherein the zinc oxide substrate mainly consists of zinc oxide particles, and the titanium dioxide layer mainly consists of titanium dioxide particles.
2. The inorganic composite powder according to claim 1, wherein the titanium dioxide layer covers all or part of the surface of the zinc oxide substrate; optionally, the titanium dioxide layer is coated on the entire surface of the zinc oxide substrate.
3. The inorganic composite powder according to claim 1 or 2, wherein the zinc oxide particles have a particle size of 0.2 to 1.0 μm; optionally, the particle size of the zinc oxide particles is 0.3-0.8 μm;
and/or the particle size of the titanium dioxide particles is 1-100 nm; optionally, the particle size of the titanium dioxide fine particles is 30 to 80 nm.
4. The inorganic composite powder according to claim 1, wherein the zinc oxide substrate has a particle size of 0.2 to 3.0 μm; and/or the thickness of the titanium dioxide layer is 1-500 nm.
5. A preparation method of inorganic composite powder is characterized in that a fusion spheroidizing machine is adopted to fuse zinc oxide particles and titanium dioxide particles until the titanium dioxide particles are attached to the surface of a zinc oxide matrix consisting of the zinc oxide particles and a titanium dioxide layer is formed.
6. The method for producing an inorganic composite powder according to claim 5, wherein the ratio of the zinc oxide particles to the fine titanium dioxide particles is 1 to 99% by mass: 99 to 1 percent; optionally, the charging mass ratio of the zinc oxide particles to the titanium dioxide particles is 30-70%: 70% -30%;
and/or the working conditions of the fusion spheroidizing machine are as follows: the rotating speed of the chamber is 2000-5000 rpm, and the time is 1-4 hours.
7. An inorganic composite powder, characterized in that it is produced by the production method according to claim 5 or 6.
8. Use of the inorganic composite powder according to claim 1, 2, 3, 4 or 7 for blocking ultraviolet, infrared and blue light simultaneously.
9. A cosmetic composition comprising the inorganic composite powder according to claim 1 or 2 or 3 or 4 or 7 and other skin-applicable materials.
10. The cosmetic composition according to claim 9, which comprises 0.01 to 50% by weight of the inorganic composite powder, based on the composition; optionally, the inorganic composite powder comprises 5 wt% to 20 wt% of the composition.
CN201911425849.2A 2019-12-31 2019-12-31 Inorganic composite powder, preparation method, application and cosmetic material composition Pending CN113116736A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102365073A (en) * 2009-07-24 2012-02-29 高丽雅娜化妆品股份有限公司 Composite powder for simultaneously blocking infrared and ultraviolet rays, and cosmetic composition using same
CN103505376A (en) * 2012-06-20 2014-01-15 株式会社爱茉莉太平洋 Organic and inorganic composite powder used to block ultraviolet light, and cosmetic composition including same
CN110494115A (en) * 2017-02-27 2019-11-22 株式会社爱茉莉太平洋 Cosmetic composition for filter blue light and barrier ultraviolet light

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102365073A (en) * 2009-07-24 2012-02-29 高丽雅娜化妆品股份有限公司 Composite powder for simultaneously blocking infrared and ultraviolet rays, and cosmetic composition using same
CN103505376A (en) * 2012-06-20 2014-01-15 株式会社爱茉莉太平洋 Organic and inorganic composite powder used to block ultraviolet light, and cosmetic composition including same
CN110494115A (en) * 2017-02-27 2019-11-22 株式会社爱茉莉太平洋 Cosmetic composition for filter blue light and barrier ultraviolet light

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Application publication date: 20210716