Composite powder adopting compound hydrophobic coating treatment and preparation method and application thereof

Abstract

The application discloses a composite powder adopting a compound hydrophobic coating treatment, characterized in that the composite powder comprises two parts of a base powder and a modifier. The application further discloses a preparation method and application of the composite powder. Compared with the prior art, the composite powder can significantly improve the overall flatness of makeup and inhibit dullness and modify skin redness and yellowish complexion in subsequent application.

Description

Technical Field

[0001] This invention relates to the field of fine chemical composite powder manufacturing, specifically to a composite powder with compound hydrophobic coating treatment, its preparation method, and its application. Background Technology

[0002] Existing makeup powder formulations and modification systems suffer from simplistic and fragmented design approaches to addressing dullness. Some formulations focus solely on improving anti-dullness effects, neglecting the creation of a luminous and translucent complexion, resulting in a lack of texture and radiance. Other products rely solely on single optical powders for visual coverage and physical soft-focus, temporarily mitigating dullness on the surface without addressing the underlying issues of yellowing, graying, and oxidation-induced darkening through tonal complementarity and antioxidant mechanisms. These products are prone to reverting to yellowing and dullness over time. Still other formulations, aiming to delay sebum oxidation and improve dullness, indiscriminately add strong oil-controlling and highly absorbent ingredients. While these may provide short-term anti-dullness benefits, they excessively absorb the skin's own oils and moisture, severely impacting the makeup's feel and leading to issues like tightness, dryness, and powder settling into fine lines. Furthermore, conventional powders, lacking coupling agents and silicone oil modification, exhibit poor compatibility and spreadability, failing to simultaneously meet the multiple needs of anti-dullness, high radiance, and moisturizing without dryness. The various functions are difficult to coordinate and integrate.

[0003] CN121647989A uniformly loads ultrafine zinc oxide onto a large-sized spherical carrier, making it a monolithic composition. This solves the problem of zinc oxide dispersion while better exerting its oil-controlling and makeup-holding functions. In addition, some functional ingredients and extracts are encapsulated on the surface, which improves the oil-controlling effect and also improves the skin feel and hydrophobicity. However, the powder itself does not have the function of actively brightening the skin tone or enhancing the luster of the makeup to achieve the goal of radiant skin.

[0004] CN121242997A provides an anti-dullness powder setting composition that mixes whitening and light-reflecting ingredients such as tricalcium phosphate and bismuth oxychloride to instantly brighten skin tone and restore radiance. It also modifies the oil-controlling ability of polymethylsilsesquioxane through alkali treatment and nonionic silicone surfactants to resist sebum, sweat, and moisture in the foundation, resulting in good makeup stability and longevity, and providing a lasting anti-dullness effect. However, this patent uses an organosilicon treatment agent for surface treatment. While this ensures makeup longevity, it does not effectively improve skin hydration. Although alkali treatment of polymethylsilsesquioxane can minimize damage to its original porous structure and provide high oil control, it excessively absorbs the skin's own oil and moisture, which can easily cause tightness and dryness with long-term makeup use, resulting in a poor skin feel. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of this invention is to provide a composite powder with compound hydrophobic coating treatment, its preparation method and application.

[0006] Compared with existing technologies, this invention can significantly improve the overall smoothness of makeup, inhibit dullness, and correct redness and yellowing of the skin.

[0007] A composite powder with a compounded hydrophobic coating treatment comprises two parts: a base powder and a modifier. The base powder, by weight, comprises the following components:

[0008] Synthetic fluorophlogopite, 5-35 parts;

[0009] 5-15 parts silica;

[0010] 10-30 parts of calcium boroaluminate;

[0011] 10-30 parts of mica loaded with titanium dioxide;

[0012] 1-5 parts zinc oxide;

[0013] 1-10 parts of sericite;

[0014] 1-10 parts of boron nitride;

[0015] 1-5 parts of complementary color powder;

[0016] Pearl powder 5-20 parts;

[0017] The modifier comprises, by weight, the following components:

[0018] 1-5 parts of titanate coupling agent;

[0019] 1-5 parts of polysiloxane-based silicone oil.

[0020] In a preferred embodiment of the present invention, the synthetic fluorophlogopite is synthetic fluorophlogopite particles with a particle size of 5-40 μm.

[0021] In a preferred embodiment of the present invention, the silica is silica with a particle size of 5-10 μm.

[0022] In a preferred embodiment of the present invention, the borosilicate aluminum calcium is borosilicate aluminum calcium powder with a particle size of 5-20 μm after treatment with an amino acid surfactant.

[0023] The amino acid surfactant is any one or more of lauroyl lysine, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium cocoyl aminopropionate, sodium cocoyl glycinate, or sodium stearoyl glutamate.

[0024] In a preferred embodiment of the present invention, the mica-loaded titanium dioxide is mica-loaded titanium dioxide particles with a particle size of 5-25 μm.

[0025] In a preferred embodiment of the present invention, the zinc oxide is zinc oxide with a particle size of 15-100 nm.

[0026] In a preferred embodiment of the present invention, the sericite is sericite with a particle size of 4-15 μm.

[0027] In a preferred embodiment of the present invention, the boron nitride is boron nitride with a particle size of 5-40 μm.

[0028] In a preferred embodiment of the present invention, the complementary color powder is any one or more of ultramarine blue, chrome green or ultramarine violet with a particle size of 0.5-10 μm.

[0029] In a preferred embodiment of the present invention, the pearlescent powder is a pearlescent powder with a particle size of 10-30 μm.

[0030] In a preferred embodiment of the present invention, the titanate coupling agent is at least one selected from the following: triisostearate titanate isopropyl titanate, isopropyl titanate isopropoxytrioleoyl titanate, tetraisopropyl titanate, neopentoxytris(dioctyl pyrophosphate) titanate, neopentoxytrinedecyl titanate, and bis(acetylacetonyl) dipalmitate.

[0031] In a preferred embodiment of the present invention, the polysiloxane silicone oil is at least one of polydimethylsiloxane, methyl polytrimethylsiloxane, octyl polymethylsiloxane, diphenyl polydimethylsiloxane, ethyl polymethylsiloxane, phenyl polytrimethylsiloxane, and diphenylmethylsiloxyphenyl polytrimethylsiloxane.

[0032] A method for preparing a composite powder using a compound hydrophobic coating treatment includes:

[0033] The synthetic fluorophlogopite, silica, boron aluminum calcium silicate, mica-supported titanium dioxide, zinc oxide, sericite, boron nitride, ultramarine blue, and pearlescent materials are thoroughly mixed under low-speed stirring to obtain a composite powder. A titanate coupling agent is then thoroughly mixed with the composite powder under low-speed stirring to obtain a pre-treated composite powder. Polysiloxane-based silicone oil is then thoroughly mixed with the pre-treated composite powder under low-speed stirring to obtain a final-treated composite powder. The treated composite powder is then dried and sieved to obtain a modified composite powder.

[0034] In a preferred embodiment of the present invention, the output voltage of the low-speed stirring is 50-200 V.

[0035] In a preferred embodiment of the present invention, the mesh size of the sieve is 80-200 mesh.

[0036] In a preferred embodiment of the present invention, the low-speed stirring time is 10-50 seconds.

[0037] In a preferred embodiment of the present invention, the drying temperature is 90-120°C.

[0038] An application of a composite powder with a compound hydrophobic coating treatment, the application being the preparation of powder or paste products.

[0039] The beneficial effects of this invention are as follows:

[0040] The composite powder of this invention achieves smooth makeup, high gloss, anti-dullness and skin tone correction functions by synergistically designing particle size morphology and optical path, and combining the principle of complementary color neutralization and sebum curing technology.

[0041] In subsequent applications, it can significantly improve the overall smoothness of makeup while inhibiting dullness and correcting redness and yellowing of the skin. Attached Figure Description

[0042] Figure 1 This is a scanning electron microscope (SEM) image of the modified powder obtained in Example 1.

[0043] Figure 2 The figures show the hydrophobicity test results of the modified powders obtained in Example 1 (right) and Comparative Example 5 (left).

[0044] Figure 3 The images show the skin adhesion test results of the modified powders obtained in Example 2 (right) and Comparative Example 4 (left).

[0045] Figure 4 The gloss test results are shown for the modified powders obtained in Example 1 (right) and Comparative Example 3 (left).

[0046] Figure 5 This is a test image of the cured sebum of the modified powder obtained in Example 5.

[0047] Figure 6 The image shows a scanning electron microscope (SEM) image of the ultramarine blue used as the raw material in the modified powder obtained in Example 1.

[0048] Figure 7 The graph shows the color difference (DEcmc) over time for the foundation (A) without the formulation of Example 1, the commercially available foundation (B), and the foundation (C) with the modified powder obtained from Example 1 added to the formulation of Table 2. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, in the following descriptions, well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of the invention.

[0050] The design concept upon which this invention is based is as follows:

[0051] Firstly, the formula incorporates appropriate amounts of complementary colorants such as ultramarine blue, ultramarine violet, or chrome green. Utilizing the unique complementary optical principle of their blue, green, or purple tones, these ingredients precisely neutralize the yellow and gray tones produced by the oxidation of human skin and makeup. This corrects yellowing and dullness of the skin from a color science perspective, resulting in a more even and brighter complexion. However, insufficient ultramarine blue has a limited color-correcting effect and cannot effectively inhibit the oxidation and yellowing of makeup, leading to a dull and sallow appearance. Excessive ultramarine blue, on the other hand, makes it difficult for the excess blue and purple tones to be neutralized by the base yellow tones, resulting in color deviations such as bluish, purplish-gray, or other unnatural appearances, creating a mask-like effect and exacerbating powder agglomeration, thus worsening the application feel. This invention limits the reasonable range of complementary colorant dosage, avoiding both of these defects. While achieving color correction and long-lasting brightening, it also ensures powder dispersion stability and a superior makeup application experience.

[0052] Secondly, the pearlescent powder added in the formula has a multi-layered, plate-like, stacked refractive structure, which can form multiple layers of reflection, refraction, and diffusion of incident light.

[0053] The appropriate amount of boron nitride added to the formula has a regular plate-like crystal structure and excellent light scattering and soft-focusing properties.

[0054] Through the synergistic optical action of these two components, sheet-like particles form a parallel reflective layer on the skin's surface, while spherical particles selectively fill in depressions. This creates a delicate, translucent, and high-quality satin sheen and soft-focus effect, avoiding the harshness, unnatural whiteness, and oiliness often associated with ordinary powders. It significantly enhances the translucency and three-dimensional radiance of makeup. However, it's important to note that an excessively high boron nitride ratio can cause excessive light scattering, resulting in a loss of the satin sheen, a flat makeup look, and excessive oil absorption, leading to dryness and creasing. Conversely, an excessively high proportion of pearlescent powder increases directional light reflection, resulting in a harsh, oily shine and loss of the soft-focus effect. Furthermore, the sheet-like powder is prone to clumping, causing uneven application and patchy makeup. The specific ratio defined in this invention achieves an optimal balance between light reflection and scattering, synergistically obtaining the ideal satin soft-focus makeup effect.

[0055] Thirdly, the formula incorporates appropriate amounts of low-oil-absorbing powders such as synthetic fluorophlogopite, silica, calcium borosilicate aluminum silicate, mica-supported titanium dioxide, and sericite as a base, which have weak absorption capacity for skin oil and moisture. Furthermore, a titanate coupling agent enhances the compatibility and dispersibility between the powders, strengthening the interfacial bonding. Combined with polydimethylsiloxane, a uniform hydrophobic and breathable protective film is formed on the powder surface, sealing powder pores and further reducing oil and water absorption. This improves the smoothness and adherence of the powder to the skin while preventing excessive consumption of surface oil and moisture, giving the makeup a soft and skin-friendly texture. This fundamentally solves the drawbacks of traditional makeup, such as tightness, dryness, and creasing after application.

[0056] Fourth, the appropriate amount of zinc oxide added to the formula solidifies sebum through chemical curing, preventing sebum from wetting the pigments and causing makeup to come off and darken. If the amount of zinc oxide added is too low, the sebum's ability to absorb and solidify will be insufficient, and the sebum will continue to soak into the pigments, making the makeup easy to melt and come off, and quickly oxidizing and darkening after makeup wear. If the amount added is higher than the limit, excessive zinc oxide will absorb too much oil, causing the skin to feel dry, chapped, and flaky. The dosage range selected in this invention balances the skin feel and the anti-darkening and makeup-wearing effects.

[0057] The following description, in conjunction with specific embodiments and comparative examples, illustrates the following:

[0058] Example 1

[0059] Take 10 g of synthetic fluorophlogopite 1 (particle size 15 μm), 18 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of calcium aluminum borosilicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm), and 10 g of pearlescent powder (particle size 10 μm) in a grinding pot and stir thoroughly to obtain mixture 1. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and stir thoroughly to obtain mixture 2. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to mixture 1 and stir thoroughly to obtain mixture 2. g of polydimethylsiloxane was uniformly added dropwise to mixture 2 and stirred thoroughly to obtain mixture 3. The output voltage was 100 V. Mixture 3 was placed in an oven at 105 ℃ and dried for 2 h. After cooling, it was sieved through a 100-mesh sieve to obtain modified composite functional powder.

[0060] Example 2

[0061] Take 10 g of synthetic fluorophlogopite 1 (particle size 15 μm), 18 g of synthetic fluorophlogopite 2 (particle size 8 μm), 15 g of silica (particle size 6 μm), 10 g of calcium aluminum borosilicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm), and 10 g of pearlescent powder (particle size 10 μm) in a grinding pot and stir thoroughly to obtain mixture 1. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and stir thoroughly to obtain mixture 2. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and stir thoroughly to obtain mixture 2. g of polydimethylsiloxane was uniformly added dropwise to mixture 2 and stirred thoroughly to obtain mixture 3. The output voltage was 100 V. Mixture 3 was placed in an oven at 105 ℃ and dried for 2 h. After cooling, it was sieved through a 100-mesh sieve to obtain modified composite functional powder.

[0062] Example 3

[0063] Take 15 g of synthetic fluorophlogopite 1 (particle size 15 μm), 13 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of calcium aluminum borosilicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm), and 10 g of pearlescent powder (particle size 10 μm) and mix thoroughly in a grinding pot to obtain mixture 1. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and mix thoroughly to obtain mixture 2. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and mix thoroughly to obtain mixture 2. g of polydimethylsiloxane was uniformly added dropwise to mixture 2 and stirred thoroughly to obtain mixture 3. The output voltage was 100 V. Mixture 3 was placed in an oven at 105 ℃ and dried for 2 h. After cooling, it was sieved through a 100-mesh sieve to obtain modified composite functional powder.

[0064] Example 4

[0065] Take 10 g of synthetic fluorophlogopite 1 (particle size 15 μm), 18 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of calcium aluminum borosilicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm), and 10 g of pearlescent powder (particle size 10 μm) in a grinding pot and stir thoroughly to obtain mixture 1. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and stir thoroughly to obtain mixture 2. The output voltage is 100 V. Take 4 g of triisostearate titanate isopropyl triisostearate and add it to mixture 1 and stir thoroughly to obtain mixture 2. g of phenyl polytrimethylsiloxane was uniformly added dropwise to mixture 2 and stirred thoroughly to obtain mixture 3. The output voltage was 100 V. Mixture 3 was placed in an oven at 105 ℃ and dried for 2 h. After cooling, it was sieved through a 100-mesh sieve to obtain modified composite functional powder.

[0066] Example 5

[0067] Take 10 g of synthetic fluorophlogopite 1 (particle size 15 μm), 18 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of boron aluminum calcium silicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm), and 10 g of pearlescent powder (particle size 10 μm) in a grinding pot and stir thoroughly to obtain mixture 1. The output voltage is 100 V. Take 4 g of isopropyl titanate isopropoxytrioleyl titanate and add it to the grinding pot with mixture 1 and stir thoroughly to obtain mixture 2. The output voltage is 100 V. Take 3 g of isopropyl titanate isopropoxytrioleyl titanate and add it to mixture 1. Stir thoroughly to obtain mixture 2. The output voltage is 100 V. Take 3 g of isopropyl titanate isopropoxytrioleyl titanate and add it to mixture 1. g of diphenylpolydimethylsiloxane was uniformly added dropwise to mixture 2 and stirred thoroughly to obtain mixture 3. The output voltage was 100 V. Mixture 3 was placed in an oven at 105 ℃ and dried for 2 hours. After cooling, it was sieved through a 100-mesh sieve to obtain modified composite functional powder.

[0068] Comparative Example 1

[0069] Take 10 g of synthetic fluorophlogopite 1 (particle size 15 μm), 18 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of calcium aluminum borosilicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of hydroxyapatite (particle size 5 μm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm), and 10 g of pearlescent powder (particle size 10 μm) in a grinding pot and stir thoroughly to obtain mixture 1. The output voltage is 100 V. Add 3 g of triisostearate titanate isopropyl triisostearate to the grinding pot and stir thoroughly with mixture 1 to obtain mixture 2. The output voltage is 100 V. Add 3 g of polydimethylsiloxane evenly to mixture 2 and stir thoroughly to obtain mixture 3. The output voltage is 100 V. V. Mixture No. 3 was placed in an oven at 105 ℃ and dried for 2 h. After cooling, it was sieved through a 100-mesh sieve to obtain the modified composite functional powder.

[0070] Comparative Example 2

[0071] Take 15 g of synthetic fluorophlogopite 1 (particle size 15 μm), 20 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of calcium aluminum borosilicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 2 g of ultramarine blue (particle size 1 μm), and 15 g of pearlescent powder (particle size 10 μm) in a grinding pot and stir thoroughly to obtain mixture 1. The output voltage is 100 V. Add 3 g of triisostearate titanate isopropyl triisostearate to the grinding pot and stir thoroughly with mixture 1 to obtain mixture 2. The output voltage is 100 V. Add 3 g of polydimethylsiloxane evenly to mixture 2 and stir thoroughly to obtain mixture 3. The output voltage is 100 V. Place mixture 3 in an oven at 105℃ and dry for 2 hours. h, after cooling, the modified composite functional powder is obtained by sieving through a 100-mesh sieve.

[0072] Comparative Example 3

[0073] Take 10 g of synthetic fluorophlogopite 1 (particle size 15 μm), 18 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of calcium aluminum borosilicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm), and 10 g of pearlescent powder (particle size 10 μm) in a grinding pot and stir thoroughly to obtain mixture 1. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and stir thoroughly to obtain mixture 2. The output voltage is 100 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and stir thoroughly to obtain mixture 2. Trimethylsiloxane silicate was uniformly added dropwise to mixture 2 and stirred thoroughly to obtain mixture 3. The output voltage was 100 V. Mixture 3 was placed in an oven at 105 ℃ and dried for 2 h. After cooling, it was sieved through a 100-mesh sieve to obtain the modified composite functional powder.

[0074] Comparative Example 4

[0075] Take 10 g of synthetic fluorophlogopite 1 (particle size 15 μm), 18 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of calcium aluminum borosilicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm), and 10 g of pearlescent powder (particle size 10 μm) and mix thoroughly in a grinding pot to obtain mixture 1. The output voltage is 220 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and mix thoroughly to obtain mixture 2. The output voltage is 220 V. Take 3 g of triisostearate titanate isopropyl triisostearate and add it to the grinding pot with mixture 1 and mix thoroughly to obtain mixture 2. g of polydimethylsiloxane was uniformly added dropwise to mixture 2 and stirred thoroughly to obtain mixture 3. The output voltage was 220 V. Mixture 3 was placed in an oven at 105 ℃ and dried for 2 h. After cooling, it was sieved through a 100-mesh sieve to obtain modified composite functional powder.

[0076] Comparative Example 5

[0077] Take 10 g of synthetic fluorophlogopite 1 (particle size 15 μm), 18 g of synthetic fluorophlogopite 2 (particle size 8 μm), 10 g of silica (particle size 6 μm), 15 g of calcium boron aluminum silicate (particle size 10 μm), 20 g of mica-supported titanium dioxide (particle size 14 μm), 3 g of zinc oxide (particle size 20-30 nm), 5 g of sericite (particle size 5 μm), 7 g of boron nitride (particle size 11 μm), 2 g of ultramarine blue (particle size 1 μm) and 10 g of pearlescent powder (particle size 10 μm) in a grinding pot and stir thoroughly to obtain a mixture. The output voltage is 100V, and the mixture is sieved through a 100-mesh sieve to obtain a composite functional powder.

[0078] Test Example 1

[0079] The modified powders obtained in Examples 1-5 and Comparative Examples 1-5 were subjected to an oil absorption value test, which was determined using caprylic / capric triglyceride to measure the oil absorption value per 100g of powder. A skin feel test was performed on the modified powders, and five randomly selected professional skin feel test volunteers evaluated the moisturizing and tightening sensations of the modified powders. A gloss test was also performed on the modified powders obtained in Examples 1-5 and Comparative Examples 1-5. The powders were mixed with a colorless W / O emulsion at a ratio of 1:9, and a transparent card was scraped off. The gloss was measured using a colorimeter, and the results are shown in Table 1.

[0080] Table 1:

[0081]

[0082] As shown in Table 1, the modified powders obtained in Examples 1-5 of this invention all have low oil absorption values, which are not much different from those of general synthetic fluorophlogopite. Furthermore, they have a moisturizing feel without causing dryness and possess a certain degree of gloss. This indicates that the modified composite powder mentioned in this invention not only has good hydrophobicity but also does not cause a tight feeling on the skin due to excessive oil absorption during application, while simultaneously enhancing facial gloss. In contrast, the powders obtained in Comparative Examples 1-5 suffer from poor hydrophobicity, difficulty in dispersing in oil, high oil absorption, and a tight feeling on the skin due to the presence of untreated, high-oil-absorption raw materials, organosilicon treatment agents, and a lack of ingredients that improve skin feel.

[0083] Application Experiment 1

[0084] The modified powder obtained in Example 1 of this invention was used in liquid foundation, and the liquid foundation formula is shown in Table 2.

[0085] Table 2:

[0086]

[0087] The preparation of liquid foundation includes the following steps:

[0088] Add the A phase raw material sequentially into the beaker and stir until dissolved.

[0089] Phase B and Phase C raw materials were added to Phase A in sequence and homogenized at high speed until the slurry and gel raw materials were completely dispersed to obtain the oil phase.

[0090] Add the D-phase raw material to another beaker and stir until completely dissolved to obtain the aqueous phase.

[0091] The aqueous phase is slowly and uniformly added to the oil phase, and the mixture is homogenized at 3000 rpm for 5 minutes. The mixture is then discharged to obtain the foundation liquid.

[0092] Test 1: Commercially available foundation liquid and foundation liquids with and without the modified powder obtained in Example 1 were selected. 0.05 g of the sample was weighed and evenly applied to a fixed area on the inside of the arm. After film formation, the color difference DEcmc value was measured every 1 hour using a colorimeter for 8 hours. The results are as follows: Figure 7 As shown in the figure, it can be seen from the addition of 2% of the modified powder obtained in Example 1 to the foundation liquid has a significant improvement in anti-dullness, with little or no dullness, and is even better than commercially available foundation liquids.

[0093] Test 2: Thirty volunteers aged 25-45 were selected as research subjects. After applying the above foundation, their feelings (good, average, poor) were collected and recorded based on three assessment points: hydration, tightness, and radiance. The statistical results are shown in Table 3.

[0094] Table 3

[0095]

[0096] The results of the makeup application experiences recorded from the 30 volunteers above show that the foundation in Application Test 1 has sufficient moisturizing properties, with minimal tightness after application, and significantly enhances the radiance and sophistication of the makeup. Therefore, adding the functional composite powder mentioned in this invention to makeup products can improve dullness while ensuring both skin hydration and makeup radiance.

[0097] The foregoing has shown and described the basic principles and main features of the invention and the advantages of the invention.

[0098] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A composite powder treated with compound hydrophobic coating, characterized in that, It comprises two parts: a base powder and a modifier. The base powder, by weight, includes the following components: Synthetic fluorophlogopite, 5-35 parts; 5-15 parts silica; 10-30 parts of calcium boroaluminate; 10-30 parts of mica loaded with titanium dioxide; 1-5 parts zinc oxide; 1-10 parts of sericite; 1-10 parts of boron nitride; 1-5 parts of complementary color powder; Pearl powder 5-20 parts; The modifier comprises, by weight, the following components: 1-5 parts of titanate coupling agent; 1-5 parts of polysiloxane-based silicone oil.

2. The composite powder with compounded hydrophobic coating treatment as described in claim 1, characterized in that, The synthetic fluorophlogopite is composed of synthetic fluorophlogopite particles with a particle size of 5-40 μm.

3. The composite powder with compounded hydrophobic coating treatment as described in claim 1, characterized in that, The silica is silica with a particle size of 5-10 μm.

4. The composite powder with compounded hydrophobic coating treatment as described in claim 1, characterized in that, The borosilicate aluminum calcium silicate is a borosilicate aluminum calcium silicate powder with a particle size of 5-20 μm, treated with an amino acid surfactant.

5. A composite powder with a compounded hydrophobic coating treatment as described in claim 1, characterized in that, The amino acid surfactant is any one or more of lauroyl lysine, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium cocoyl aminopropionate, sodium cocoyl glycinate, or sodium stearoyl glutamate.

6. A composite powder with a compounded hydrophobic coating treatment as described in claim 1, characterized in that, The mica-supported titanium dioxide consists of mica-supported titanium dioxide particles with a particle size of 5-25 μm; The zinc oxide is zinc oxide with a particle size of 15-100 nm; The sericite is sericite with a particle size of 4-15 μm; The boron nitride is boron nitride with a particle size of 5-40 μm; The complementary color powder is any one or more of ultramarine blue, chrome green, or ultramarine violet with a particle size of 0.5-10 μm; The pearlescent powder is a pearlescent powder with a particle size of 10-30μm.

7. A composite powder with a compounded hydrophobic coating treatment as described in claim 1, characterized in that, The titanate coupling agent is at least one selected from the following: triisostearate titanate isopropyl titanate, isopropyl titanate isopropoxytrioleoyl titanate, tetraisopropyl titanate, neopentyloxytris(dioctyl pyrophosphate) titanate, neopentyloxytrinedecyl titanate, and bis(acetylacetonyl) dipalmitate; The polysiloxane silicone oil is at least one of polydimethylsiloxane, methyl polytrimethylsiloxane, octyl polymethylsiloxane, diphenyl polydimethylsiloxane, ethyl polymethylsiloxane, phenyl polytrimethylsiloxane, and diphenylmethylsiloxyphenyl polytrimethylsiloxane.

8. A method for preparing a composite powder with a compound hydrophobic coating treatment as described in any one of claims 1-7, characterized in that, include: The synthetic fluorophlogopite, silica, boron aluminum calcium silicate, mica-supported titanium dioxide, zinc oxide, sericite, boron nitride, ultramarine blue, and pearlescent materials are thoroughly mixed under low-speed stirring to obtain a composite powder. A titanate coupling agent is then thoroughly mixed with the composite powder under low-speed stirring to obtain a pre-treated composite powder. Polysiloxane-based silicone oil is then thoroughly mixed with the pre-treated composite powder under low-speed stirring to obtain a final-treated composite powder. The treated composite powder is then dried and sieved to obtain a modified composite powder.

9. The method for preparing a composite powder with a compound hydrophobic coating treatment as described in claim 8, characterized in that, The output voltage of the low-speed stirring is 50-200 V; the mesh size of the sieve is 80-200 mesh; the low-speed stirring time is 10-50 s; and the drying temperature is 90-120 ℃.

10. The use of a composite powder treated with a compound hydrophobic coating as described in any one of claims 1-7, characterized in that, The intended use is for preparing powders, emulsions, powders, and ointments for cosmetics.

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