Composite powder with directional oil absorption performance as well as preparation method and application of composite powder

Abstract

The invention belongs to the technical field of cosmetics, and particularly relates to composite powder with directional oil absorption performance and a preparation method and application thereof. The flaky synthetic fluorophlogopite loaded porous composite phosphate particles and zinc oxide in the composite powder with the directional oil absorption performance provided by the invention can selectively adsorb a large amount of oleic acid, have weak adsorbability on beneficial grease such as squalane, can quickly flocculate, adsorb and solidify grease, and are not easy to diffuse, so that the composite powder has a good oil absorption effect. The oil-absorbing agent is a high-performance oil-absorbing component; meanwhile, the preparation method is simple, the raw materials are low in price, the product is safe and can be applied to various oil-absorbing cosmetics such as oil-absorbing paper, oil-absorbing masks, oil-absorbing foundation make-up, oil-absorbing loose powder or oil-control type foundation make-up liquid, and therefore the technical problem that existing cosmetics lack high-performance oil-absorbing components is solved.

Description

Technical Field

[0001] The present application belongs to the field of cosmetic technology, and in particular relates to a composite powder with directional oil absorption performance, a preparation method and an application thereof. Background Art

[0002] As time goes by after makeup is applied, it is difficult to maintain the makeup in the same state as when it was just applied because the human skin surface naturally secretes oil. Especially in summer, due to the high temperature, excessive sebum secretion can easily cause the makeup to fall off, which in turn has an adverse effect on the effect of the entire makeup. Therefore, current cosmetics, especially color cosmetics, need to have the function of oil control. For example, current oil-control foundation, pressed powder, loose powder and other color cosmetics add oil-absorbing ingredients to absorb excess oil on the skin surface, helping to keep the skin refreshed, reduce oiliness, and maintain makeup.

[0003] At present, most of the oil-absorbing ingredients in cosmetics rely on the use of porous functional powders to achieve the oil-control function, such as porous silica, porous polymethyl methacrylate, and metal salts with strong oil-absorbing ability. However, porous silica not only absorbs oil, but also absorbs water. In this way, it is inevitable that the skin becomes dry. In addition, porous polymethyl methacrylate has a small pore size, so its oil absorption performance is not ideal. As for materials such as metal salts, there are problems such as insufficient spreadability. When applied to the skin, it will make people feel rough, and it has poor water resistance and is prone to peeling. In recent years, some new oil-absorbing ingredients have also been developed, such as zinc oxide and hydroxyapatite coated on the surface of cosmetic-grade mica powder to achieve an oil-control effect. However, this oil-absorbing ingredient has oil absorption and oil-control properties. There are defects such as insufficient energy, difficulty in spreading, and strong adsorption to beneficial oils such as squalane; there is also the use of aminosilane grafted synthetic mica powder, polymethyl methacrylate, hydroxyapatite and zinc oxide to achieve oil control effect, but the oil absorption amount of this oil-absorbing ingredient is not ideal, and it does not have the selective absorption ability for unsaturated fatty acids such as oleic acid, and it is difficult to solidify and solidify after oil absorption; there is also the use of silica, sodium calcium aluminum silicate, lauroyl lysine, and silicone components to achieve oil control effect, but the oil absorption effect of this oil-absorbing ingredient is general, and its main function is soft focus effect, that is, visually blurring and weakening skin blemishes, making the skin look smoother, delicate and textured; therefore, there is a lack of high-performance oil-absorbing ingredients in current cosmetics that can selectively absorb oleic acid, have weak adsorption to beneficial oils such as squalane, and at the same time have ideal oil absorption and are easy to absorb and solidify. Summary of the invention

[0004] In view of this, the present application provides a composite powder with directional oil absorption performance, a preparation method and an application, which are used to solve the technical problem of the lack of high-performance oil absorption ingredients in existing cosmetics.

[0005] In a first aspect, the present application provides a composite powder with directional oil absorption performance, the components of which include: porous composite phosphate particles, flaky synthetic fluorphlogopite and zinc oxide;

[0006] The flaky synthetic fluorphlogopite carries the porous composite phosphate particles and zinc oxide.

[0007] Preferably, the flake diameter of the synthetic fluorphlogopite is 10-30 μm;

[0008] The particle size of the porous composite phosphate particles is 1-10 μm;

[0009] The particle size of the zinc oxide is 0.01-1 μm;

[0010] Preferably, the flake diameter of the synthetic fluorphlogopite is 15-30 μm;

[0011] The particle size of the porous composite phosphate particles is 1-5 μm.

[0012] Preferably, the porous composite phosphate particles are porous calcium-magnesium composite phosphate particles.

[0013] Preferably, the porous composite phosphate particles are porous composite phosphate particles treated with a surfactant;

[0014] The flaky synthetic fluorphlogopite is a flaky synthetic fluorphlogopite treated with a surfactant;

[0015] The surfactant is selected from at least one of myristoyl glutamic acid, palmitoyl glycine, stearoyl arginine, lauroyl lysine, hydrogenated polydimethylsiloxane, triethoxycaprylylsilane, aluminum hydroxide, stearic acid, and cyclopentasiloxane.

[0016] Preferably, calculated by weight, a composite powder having directional oil absorption properties comprises: 10-30 parts by weight of porous composite phosphate particles, 40-80 parts by weight of flaky synthetic fluorphlogopite, 5-20 parts by weight of zinc oxide and 1-10 parts by weight of a surfactant.

[0017] The second aspect of the present application provides a method for preparing a composite powder having directional oil absorption performance, the preparation method comprising the following steps:

[0018] Step S1, adding an aqueous solution containing calcium ions and magnesium ions into a disodium hydrogen phosphate solution to perform a precipitation reaction, thereby obtaining a suspension containing calcium and magnesium phosphate precipitates;

[0019] Step S2, spray drying the suspension containing calcium magnesium phosphate precipitate to obtain calcium magnesium phosphate precipitate;

[0020] Step S3, calcining the calcium magnesium phosphate precipitate at high temperature to obtain porous calcium magnesium composite phosphate particles;

[0021] Step S4, uniformly mixing the porous calcium-magnesium composite phosphate particles, the flaky synthetic fluorphlogopite and the surfactant and performing surface treatment to obtain the surfactant-treated porous calcium-magnesium composite phosphate particles and the surfactant-treated flaky synthetic fluorphlogopite;

[0022] Step S5, uniformly mixing the porous calcium-magnesium composite phosphate particles treated with a surfactant, the flaky synthetic fluorphlogopite treated with a surfactant, and zinc oxide to obtain a composite powder with directional oil absorption performance.

[0023] Preferably, in step S1, the concentration of the disodium hydrogen phosphate solution is 0.1-1.5 mol / L.

[0024] Preferably, in step S1, the ratio of the molar amount of hydrogen phosphate ions in the disodium hydrogen phosphate solution to the molar amount of the sum of calcium and magnesium ions in the aqueous solution containing calcium ions and magnesium ions is 3-5:5;

[0025] The ratio of the molar amount of calcium ions to the molar amount of magnesium ions in the aqueous solution containing calcium ions and magnesium ions is 3:2-4.

[0026] Preferably, the precipitation reaction in step S1 specifically includes:

[0027] Step S11, adding the aqueous solution containing calcium ions and magnesium ions dropwise into the disodium hydrogen phosphate solution at a rate of 0.5-2 L / h and stirring to obtain a mixed solution;

[0028] Step S12, keeping the mixed solution at 85-95° C. for 1-5 hours and aging for 6-18 hours to obtain a suspension containing calcium magnesium phosphate precipitate.

[0029] Preferably, in step S2, the spray drying temperature is 150-230°C.

[0030] Preferably, in step S3, the high temperature calcination is carried out at a temperature of 400° C. to 800° C. and for a time of 10 to 90 minutes.

[0031] Preferably, step S4 specifically includes:

[0032] Step S41, adding porous calcium magnesium composite phosphate particles, flaky synthetic fluorphlogopite and surfactant into n-hexane and / or anhydrous ethanol solvent and mixing them evenly for surface treatment;

[0033] Step S42, recovering n-hexane and / or anhydrous ethanol solvent by distillation under reduced pressure to obtain porous calcium-magnesium composite phosphate particles treated with surfactant and flaky synthetic fluorphlogopite treated with surfactant.

[0034] The third aspect of the present application provides an application of a composite powder with directional oil absorption performance in the preparation of oil-absorbing cosmetics.

[0035] Preferably, the oil-absorbing cosmetics include oil-absorbing paper, oil-absorbing facial mask, oil-absorbing foundation, oil-absorbing loose powder or oil-control liquid foundation.

[0036] The fourth aspect of the present application provides a color cosmetic, comprising the composite powder with directional oil absorption performance as described in the first aspect.

[0037] Compared with the prior art, the composite powder with directional oil absorption performance provided by the present application has at least the following beneficial effects:

[0038] 1. The composite powder with directional oil absorption performance provided by the present application contains flaky synthetic fluorphlogopite loaded with porous composite phosphate particles and zinc oxide, which can form an effect similar to capillary siphon, greatly enhance the adsorption of unsaturated fatty acids in human sebum, and reduce the adsorption of squalane and silicone oil after surface treatment, thereby achieving the effect of rapid flocculation of artificial sebum, exerting the effects of continuous oil control and non-dulling color, etc., and is a high-performance oil-absorbing ingredient.

[0040] 2. The porous composite phosphate particles introduced into the composite powder with directional oil absorption performance provided in the present application are themselves food additive ingredients and have passed safety testing. Therefore, the composite powder with directional oil absorption performance provided in the present application has great potential for practical application in cosmetics.

[0042] 3. The composite powder with directional oil absorption performance provided in the present application has a wide range of applications and can be used in a variety of oil-absorbing cosmetics such as oil-absorbing paper, oil-absorbing facial mask, oil-absorbing foundation, oil-absorbing loose powder or oil-control liquid foundation.

[0044] 4. The composite powder with directional oil absorption performance provided in this application has a wide range of applications and also has great potential application value in the fields of toothpaste abrasives, medical fillers, etc.

[0046] 5. The preparation method of the composite powder with directional oil absorption performance provided in the present application is simple, the raw material price is low, and it is conducive to large-scale preparation in the industrial field. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 Scanning electron microscope images of the porous calcium-magnesium composite phosphate particles and the composite powder with directional oil absorption performance provided in Example 1 of the present application, the calcium-magnesium phosphate precipitate provided in Example 5, and the oil-absorbing composite powder provided in Example 8;

[0049] Figure 2 This is a graph showing the test results of the adsorption capacity of oleic acid by the composite powder with directional oil absorption performance provided in Example 1 of the present application and the oil-absorbing composite powder provided in Example 8. DETAILED DESCRIPTION

[0050] The present application provides a composite powder with directional oil absorption performance, a preparation method and an application thereof, which are used to solve the technical problem of lack of high-performance oil absorption ingredients in existing cosmetics.

[0051] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0052] Example 1

[0053] Example 1 of the present application provides a method for preparing a composite powder with directional oil absorption performance, the preparation method comprising the steps of preparing a suspension containing calcium magnesium phosphate precipitate, preparing calcium magnesium phosphate precipitate, preparing porous calcium magnesium composite phosphate particles, surface treatment, and mixing to prepare the composite powder.

[0054] The steps of preparing a suspension containing calcium magnesium phosphate precipitate include: first accurately weighing 166.5g of calcium chloride and 47.6g of magnesium chloride and dissolving them in 1L of water to obtain an aqueous solution containing calcium ions and magnesium ions, weighing 160g of disodium hydrogen phosphate and dissolving them in 1.5L of water to obtain a disodium hydrogen phosphate solution; raising the temperature to 90°C, dripping the aqueous solution containing calcium ions and magnesium ions into the disodium hydrogen phosphate solution, stirring for reaction for 1h, keeping the temperature for reaction for 3h, then stopping stirring and aging for 12h, cooling to room temperature, pouring off the supernatant, adding deionized water and centrifuging and washing until there are no impurities, and then preparing a suspension containing calcium magnesium phosphate precipitate (solid content of about 20%).

[0055] The step of preparing the calcium magnesium phosphate precipitate comprises: spray drying the suspension containing the calcium magnesium phosphate precipitate at 180° C. to obtain the calcium magnesium phosphate precipitate.

[0056] The step of preparing porous calcium-magnesium composite phosphate particles comprises: calcining calcium-magnesium phosphate precipitates at a high temperature of 500° C. for 30 minutes to obtain porous calcium-magnesium composite phosphate particles.

[0057] The surface treatment steps include: adding 1g of surfactant lauroyl lysine and 2g of triethoxyoctylsilane to 150g of n-hexane and mixing evenly, adding 67g of flaky synthetic fluorphlogopite and 20g of porous calcium magnesium composite phosphate particles to n-hexane and mixing evenly at 50°C for surface treatment, then performing reduced pressure distillation at 60°C to recover all solvents, and obtaining porous calcium magnesium composite phosphate particles treated with surfactant and flaky synthetic fluorphlogopite treated with surfactant.

[0058] The step of preparing the composite powder by mixing includes: uniformly mixing porous calcium-magnesium composite phosphate particles treated with a surfactant, flaky synthetic fluorphlogopite treated with a surfactant and 10g of zinc oxide to obtain a composite powder with directional oil absorption performance.

[0059] Example 2

[0060] Example 2 of the present application provides a method for preparing a composite powder with directional oil absorption performance, the preparation method comprising the steps of preparing a suspension containing calcium magnesium phosphate precipitate, preparing calcium magnesium phosphate precipitate, preparing porous calcium magnesium composite phosphate particles, surface treatment, and mixing to prepare the composite powder.

[0061] The steps of preparing a suspension containing calcium magnesium phosphate precipitate include: first accurately weighing 246g of calcium chloride and 44.5g of magnesium chloride and dissolving them in 1L of water to obtain an aqueous solution containing calcium ions and magnesium ions, weighing 144g of disodium hydrogen phosphate and dissolving it in 1.5L of water to obtain a disodium hydrogen phosphate solution; raising the temperature to 90°C, dripping the aqueous solution containing calcium ions and magnesium ions into the disodium hydrogen phosphate solution, stirring for reaction for 1h, keeping the temperature for reaction for 3h, then stopping stirring and aging for 12h, cooling to room temperature, pouring off the supernatant, adding deionized water for centrifugal washing until there is no impurity ions, and then configuring it into a suspension containing calcium magnesium phosphate precipitate (solid content of about 20%).

[0062] The step of preparing the calcium magnesium phosphate precipitate comprises: spray drying the suspension containing the calcium magnesium phosphate precipitate at 180° C. to obtain the calcium magnesium phosphate precipitate.

[0063] The step of preparing porous calcium-magnesium composite phosphate particles comprises: calcining calcium-magnesium phosphate precipitates at a high temperature of 700° C. for 30 minutes to obtain porous calcium-magnesium composite phosphate particles.

[0064] The surface treatment steps include: adding 3g of lauroyl lysine and 4g of triethoxyoctylsilane into 150g of ethanol and mixing evenly, adding 75g of flaky synthetic fluorphlogopite and 12g of porous calcium magnesium composite phosphate particles into ethanol and mixing evenly at 50°C for surface treatment, then performing reduced pressure distillation at 60°C to recover all solvents, and obtaining porous calcium magnesium composite phosphate particles treated with surfactant and flaky synthetic fluorphlogopite treated with surfactant.

[0065] The step of preparing the composite powder by mixing includes: uniformly mixing porous calcium-magnesium composite phosphate particles treated with a surfactant, flaky synthetic fluorphlogopite treated with a surfactant and 6g of zinc oxide to obtain a composite powder with directional oil absorption performance.

[0066] Example 3

[0067] Example 3 of the present application provides a method for preparing a composite powder with directional oil absorption performance, the preparation method comprising the steps of preparing a suspension containing calcium magnesium phosphate precipitate, preparing calcium magnesium phosphate precipitate, preparing porous calcium magnesium composite phosphate particles, surface treatment, and mixing to prepare the composite powder.

[0068] The steps of preparing a suspension containing calcium magnesium phosphate precipitate include: first accurately weighing 262.4g of calcium chloride and 59.32g of magnesium chloride and dissolving them in 1L of water to obtain an aqueous solution containing calcium ions and magnesium ions, weighing 160g of disodium hydrogen phosphate and dissolving it in 1.5L of water to obtain a disodium hydrogen phosphate solution; raising the temperature to 90°C, dripping the aqueous solution containing calcium ions and magnesium ions into the disodium hydrogen phosphate solution, stirring for reaction for 1h, keeping the temperature for reaction for 3h, then stopping stirring and aging for 12h, cooling to room temperature, pouring off the supernatant, adding deionized water for centrifugal washing until there is no impurity ions, and then configuring it into a suspension containing calcium magnesium phosphate precipitate (solid content of about 20%).

[0069] The step of preparing the calcium magnesium phosphate precipitate comprises: spray drying the suspension containing the calcium magnesium phosphate precipitate at 180° C. to obtain the calcium magnesium phosphate precipitate.

[0070] The step of preparing porous calcium-magnesium composite phosphate particles comprises: calcining calcium-magnesium phosphate precipitates at a high temperature of 600° C. for 60 minutes to obtain porous calcium-magnesium composite phosphate particles.

[0071] The surface treatment steps include: adding 3g of aluminum hydroxide and 4g of hydrogenated polydimethylsiloxane as surfactants to 150g of ethanol and mixing evenly, adding 75g of flaky synthetic fluorphlogopite and 12g of porous calcium-magnesium composite phosphate particles to ethanol and mixing evenly at 50°C for surface treatment, then performing reduced pressure distillation at 70°C to recover all solvents, and obtaining porous calcium-magnesium composite phosphate particles treated with surfactants and flaky synthetic fluorphlogopite treated with surfactants.

[0072] The step of preparing the composite powder by mixing includes: uniformly mixing porous calcium-magnesium composite phosphate particles treated with a surfactant, flaky synthetic fluorphlogopite treated with a surfactant and 6g of zinc oxide to obtain a composite powder with directional oil absorption performance.

[0073] Example 4

[0074] Example 4 of the present application provides a method for preparing a composite powder with directional oil absorption performance, the preparation method comprising the steps of preparing a suspension containing calcium magnesium phosphate precipitate, preparing calcium magnesium phosphate precipitate, preparing porous calcium magnesium composite phosphate particles, surface treatment, and mixing to prepare the composite powder.

[0075] The steps of preparing a suspension containing calcium magnesium phosphate precipitate include: first accurately weighing 166.5g of calcium chloride and 74.2g of magnesium chloride and dissolving them in 1L of water to obtain an aqueous solution containing calcium ions and magnesium ions, weighing 160g of disodium hydrogen phosphate and dissolving them in 1.5L of water to obtain a disodium hydrogen phosphate solution; raising the temperature to 90°C, dripping the aqueous solution containing calcium ions and magnesium ions into the disodium hydrogen phosphate solution, stirring for reaction for 1h, keeping the temperature for reaction for 3h, then stopping stirring and aging for 12h, cooling to room temperature, pouring off the supernatant, adding deionized water and centrifuging and washing until there are no impurities, and then preparing a suspension containing calcium magnesium phosphate precipitate (solid content of about 20%).

[0076] The step of preparing the calcium magnesium phosphate precipitate comprises: spray drying the suspension containing the calcium magnesium phosphate precipitate at 180° C. to obtain the calcium magnesium phosphate precipitate.

[0077] The step of preparing porous calcium-magnesium composite phosphate particles comprises: calcining calcium-magnesium phosphate precipitates at a high temperature of 500° C. for 30 minutes to obtain porous calcium-magnesium composite phosphate particles.

[0078] The surface treatment steps include: adding 1g of surfactant lauroyl lysine and 4g of triethoxyoctylsilane to 150g of n-hexane and mixing evenly, adding 72g of flaky synthetic fluorphlogopite and 15g of porous calcium magnesium composite phosphate particles to n-hexane and mixing evenly at 50°C for surface treatment, then performing reduced pressure distillation at 60°C to recover all solvents, and obtaining porous calcium magnesium composite phosphate particles treated with surfactant and flaky synthetic fluorphlogopite treated with surfactant.

[0079] The step of preparing the composite powder by mixing includes: uniformly mixing porous calcium-magnesium composite phosphate particles treated with a surfactant, flaky synthetic fluorphlogopite treated with a surfactant and 8g of zinc oxide to obtain a composite powder with directional oil absorption performance.

[0080] Example 5

[0081] Example 5 of the present application provides a method for preparing an oil-absorbing composite powder. As a first comparative example, the preparation method includes the steps of preparing a suspension containing calcium magnesium phosphate precipitate, preparing calcium magnesium phosphate precipitate, surface treatment, and mixing to prepare the composite powder.

[0082] The steps of preparing a suspension containing calcium magnesium phosphate precipitate include: first accurately weighing 200g of calcium chloride and 29.7g of magnesium chloride and dissolving them in 1L of water to obtain an aqueous solution containing calcium ions and magnesium ions, weighing 160g of disodium hydrogen phosphate and dissolving it in 1.5L of water to obtain a disodium hydrogen phosphate solution; raising the temperature to 90°C, dripping the aqueous solution containing calcium ions and magnesium ions into the disodium hydrogen phosphate solution, stirring for reaction for 1h, keeping the temperature for reaction for 3h, then stopping stirring and aging for 12h, cooling to room temperature, pouring off the supernatant, adding deionized water for centrifugal washing until there is no impurity ions, and then configuring into a suspension containing calcium magnesium phosphate precipitate (solid content of about 20%).

[0083] The steps of preparing calcium magnesium phosphate precipitate include: spray drying a suspension containing calcium magnesium phosphate precipitate at 180°C to obtain calcium magnesium phosphate precipitate, the structure of which is as follows: Figure 1 As shown in Figure c.

[0084] The surface treatment steps include: adding 1g of surfactant lauroyl lysine and 4g of triethoxyoctylsilane to 150g of n-hexane and mixing evenly, adding 72g of flaky synthetic fluorphlogopite and 15g of calcium magnesium phosphate precipitate to n-hexane and mixing evenly at 50°C for surface treatment, then performing reduced pressure distillation at 60°C to recover all solvents, and obtaining calcium magnesium phosphate precipitate treated with surfactant and flaky synthetic fluorphlogopite treated with surfactant.

[0085] The step of preparing the composite powder by mixing includes: uniformly mixing the calcium magnesium phosphate precipitate treated with a surfactant, the flaky synthetic fluorphlogopite treated with a surfactant and 8g of zinc oxide to obtain the oil-absorbing composite powder.

[0086] Example 6

[0087] Example 6 of the present application provides a method for preparing an oil-absorbing composite powder. As a second comparative example, the preparation method includes the steps of preparing a suspension containing calcium magnesium phosphate precipitate, preparing calcium magnesium phosphate precipitate, preparing porous calcium magnesium composite phosphate particles, and mixing to prepare the composite powder.

[0088] The steps of preparing a suspension containing calcium magnesium phosphate precipitate include: first accurately weighing 166.5g of calcium chloride and 47.6g of magnesium chloride and dissolving them in 1L of water to obtain an aqueous solution containing calcium ions and magnesium ions, weighing 160g of disodium hydrogen phosphate and dissolving them in 1.5L of water to obtain a disodium hydrogen phosphate solution; raising the temperature to 90°C, dripping the aqueous solution containing calcium ions and magnesium ions into the disodium hydrogen phosphate solution, stirring for reaction for 1h, keeping the temperature for reaction for 3h, then stopping stirring and aging for 12h, cooling to room temperature, pouring off the supernatant, adding deionized water and centrifuging and washing until there are no impurities, and then preparing a suspension containing calcium magnesium phosphate precipitate (solid content of about 20%).

[0089] The steps for preparing calcium magnesium phosphate precipitate include: spray-drying the suspension containing calcium magnesium phosphate precipitate at 180 °C to obtain calcium magnesium phosphate precipitate.

[0090] The steps for preparing porous calcium magnesium composite phosphate particles include: calcining the calcium magnesium phosphate precipitate at 500 °C for 30 min to obtain porous calcium magnesium composite phosphate particles.

[0091] The steps for mixing and preparing the composite powder include: uniformly mixing 72 g of flaky synthetic fluorophlogopite, 15 g of porous calcium magnesium composite phosphate particles, and 8 g of zinc oxide to obtain an oil-absorbing composite powder.

[0092] Example 7

[0093] Example 7 of this application provides a method for preparing an oil-absorbing composite powder. As the third comparative example, the preparation method includes a surface treatment step and a step of mixing and preparing the composite powder.

[0094] The surface treatment step includes: adding 1 g of lauroyl lysine and 4 g of triethoxysilane to 150 g of n-hexane and mixing evenly, adding 72 g of flaky synthetic fluorophlogopite to n-hexane and mixing evenly at 50 °C for surface treatment, and then recovering all the solvents by vacuum distillation at 60 °C to obtain flaky synthetic fluorophlogopite treated with surfactant.

[0095] The step of mixing and preparing the composite powder includes: uniformly mixing the flaky synthetic fluorophlogopite treated with surfactant and 8 g of zinc oxide to obtain an oil-absorbing composite powder.

[0096] Example 8

[0097] Example 8 of this application provides a method for preparing an oil-absorbing composite powder. As the fourth comparative example, the preparation method includes a step of preparing a suspension containing hydroxyapatite, a step of preparing spherical hydroxyapatite particles, a surface treatment step, and a step of mixing and preparing the composite powder.

[0098] The step of preparing a suspension containing hydroxyapatite includes: first weighing 55 g of calcium chloride and dissolving it in 500 mL of water to obtain a calcium chloride solution, weighing 40 g of diammonium hydrogen phosphate and dissolving it in 500 mL of water to obtain a diammonium hydrogen phosphate solution; raising the temperature to 90 °C, dropping the calcium chloride solution into the diammonium hydrogen phosphate solution and stirring for 1 h, then transferring it to a high-pressure reaction kettle and reacting for 24 h; cooling to room temperature, pouring off the supernatant, adding deionized water and centrifuging and washing until there are no impurity ions, and then preparing a suspension containing hydroxyapatite (solid content about 20%).

[0099] The step of preparing spherical hydroxyapatite particles includes: spray-drying the suspension containing hydroxyapatite (solid content about 20%) at 280 °C to obtain conventional spherical hydroxyapatite.

[0100] The surface treatment steps include: adding 1g of surfactant lauroyl lysine and 4g of triethoxyoctylsilane to 150g of n-hexane and mixing evenly, adding 72g of flaky synthetic fluorphlogopite and 15g of hydroxyapatite to n-hexane and mixing evenly at 50°C for surface treatment, then performing reduced pressure distillation at 60°C to recover all solvents, and obtaining flaky synthetic fluorphlogopite treated with surfactant and hydroxyapatite treated with surfactant.

[0101] The steps of preparing the composite powder by mixing include: uniformly mixing the flaky synthetic fluorphlogopite treated with a surfactant, the hydroxyapatite treated with a surfactant and 8g of zinc oxide to obtain an oil-absorbing composite powder having a structure such as Figure 1 As shown in Figure d.

[0102] Example 9

[0103] Example 9 of the present application provides a method for preparing an oil-absorbing composite powder. As a fifth comparative example, the preparation method includes a surface treatment step and a step of mixing and preparing the composite powder.

[0104] The surface treatment steps include: adding 0.5g of surfactant lauroyl lysine and 1.5g of triethoxyoctylsilane to 150g of n-hexane and mixing evenly, adding 86g of flaky synthetic fluorphlogopite and 8g of hydroxyapatite to n-hexane and mixing evenly at 50°C for surface treatment, and then performing reduced pressure distillation at 60°C to recover all solvents to obtain flaky synthetic fluorphlogopite treated with surfactant and hydroxyapatite treated with surfactant.

[0105] The step of preparing the composite powder by mixing comprises: uniformly mixing the flaky synthetic fluorphlogopite treated with a surfactant, the hydroxyapatite treated with a surfactant and 2g of zinc oxide to obtain the oil-absorbing composite powder.

[0106] Experimental Example 1

[0107] Experimental Example 1 of the present application uses the composite powder with directional oil absorption performance and the oil-absorbing composite powder provided in Examples 1-9 as samples for structural characterization and performance testing.

[0108] Among them, the structural characterization is carried out according to the electron microscopy test conducted in accordance with GB / T 36422-2018 "Determination of microstructure and diameter of chemical fibers by scanning electron microscopy method" Figure 1 shown; compare Figure 1 As can be seen from Figures a and c, the porous calcium-magnesium composite phosphate particles provided in Example 1 (Figure a) have a porous structure, while the calcium-magnesium phosphate precipitate provided in Example 5 is a flaky non-porous structure (Figure c).

[0109] from Figure 1As can be seen from Figure b in Example 1, the porous calcium-magnesium composite phosphate particles and solids such as zinc oxide are embedded in the flaky mica in the composite powder with directional oil absorption performance, and the flaky synthetic fluorphlogopite is loaded with porous composite phosphate and zinc oxide; and from Figure 1 As can be seen from Figure d, the hydroxyapatite in the oil-absorbing composite powder is spherical particles.

[0110] The process of oil absorption performance test includes: weighing 5g sample and placing it on flat glass, adding silicone oil, squalane or oleic acid with a viscosity of 5cst, and using a spatula to press and grind to allow silicone oil, squalane or oleic acid to penetrate into the sample until the sample forms a paste with uniform consistency. The larger the oil absorption test data, the stronger the oil absorption ability of the sample. The test results are shown in Table 1.

[0111] The process of the oil absorption and coagulation performance test includes: at room temperature of 30°C, taking 6g of purified water + 12g of artificial sebum oil to simulate human sweat and sebum components, placing them in a glass bottle, adding 1.8g of the sample, shaking rapidly for 20 times, and immediately starting the stopwatch after standing, gently inverting the bottle to observe the flow state of the mixture, and recording the coagulation time. The shorter the coagulation time, the stronger the oil absorption and coagulation ability. The test results are shown in Table 1; the proportion of the artificial sebum oil is as follows: squalane 16.5%, linoleic acid / oleic acid 22.7%, beeswax 1%, and triglyceride 59.8%.

[0112] The process of oleic acid permeability test includes: 0.2g sample is evenly applied on filter paper with a diameter of 12.5cm, then 0.5μg oleic acid is dropped, and the maximum width of its diffusion is measured at 5min, 15min, and 30min respectively, and the diffusion of oleic acid is observed. The smaller the oleic acid diffusion diameter, the stronger the adsorption capacity of oleic acid. The test results are as follows: Figure 2 shown.

[0113] Table 1: Oil absorption performance test results

[0114]

[0115] Table 2: Oil absorption and solidification performance test results

[0116]

[0117] It can be seen from Table 1 that the composite powder with directional oil absorption performance provided by Examples 1-4 of the present application absorbs about 6 ml of oleic acid, and absorbs less squalane and silicone oil, about 3 ml; this shows that the composite powder with directional oil absorption performance provided by Examples 1-4 of the present application can selectively absorb oleic acid, has weak adsorption to beneficial oils such as squalane, and has a large oil absorption amount, close to 10 ml; in addition, it can be seen from Table 2 that the composite powder with directional oil absorption performance provided by Examples 1-4 of the present application has good oil absorption and coagulation performance, and can complete the flocculation, adsorption and coagulation of human sweat and sebum components in about 40 to 50 seconds, and is a high-performance oil absorption component.

[0118] It can be seen from Table 1-2 that the oil-absorbing composite powder provided in Example 5 is not subjected to high-temperature calcination, so that the components in the oil-absorbing composite powder are ordinary calcium magnesium phosphate precipitates, not porous calcium magnesium composite phosphate particles; this causes the oil absorption performance and oil absorption coagulation performance of the oil-absorbing composite powder provided in Example 5 to decrease significantly, and oleic acid is easy to diffuse.

[0119] It can be seen from Table 1-2 that the oil-absorbing composite powder provided in Example 6 is not treated with a surfactant, so that the components in the oil-absorbing composite powder are porous calcium-magnesium composite phosphate particles and flaky synthetic fluorphlogopite, rather than porous calcium-magnesium composite phosphate particles treated with a surfactant and flaky synthetic fluorphlogopite treated with a surfactant; this causes the oil absorption performance and oil absorption coagulation performance of the oil-absorbing composite powder provided in Example 6 to decrease.

[0120] As can be seen from Table 1-2, the oil-absorbing composite powder provided in Example 7 does not contain ordinary calcium magnesium phosphate salts or porous calcium magnesium composite phosphate particles, which makes it impossible for the oil-absorbing composite powder to flocculate, adsorb and solidify human sweat and sebum components, and the adsorption performance for oleic acid, squalane and silicone oil is also weak.

[0121] From Table 1-2 and Figure 2 It can be seen that the oil-absorbing composite powder provided in Examples 8-9 has hydroxyapatite as the added oil-absorbing component, not porous composite phosphate; comparison shows that its adsorption performance for oil and fat, flocculation adsorption and coagulation are average, which means that the porous calcium-magnesium composite phosphate particles provided in the present application are loaded on micron-sized flaky synthetic fluorphlogopite and coated with zinc oxide, which can form an effect similar to capillary siphon, greatly enhance the adsorption of unsaturated fatty acids such as oleic acid in human sebum, and reduce the adsorption of squalane and silicone oil after surface treatment, thereby achieving the effect of rapid flocculation of artificial sebum, and exerting the effects of continuous oil control and non-dull color.

[0122] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A composite powder with directional oil absorption performance, characterized in that: Includes: porous composite phosphate particles, flaky synthetic fluorphlogopite and zinc oxide; The flaky synthetic fluorphlogopite carries the porous composite phosphate particles and zinc oxide.

2. The composite powder with directional oil absorption performance according to claim 1, characterized in that: The flake diameter of the synthetic fluorphlogopite is 10-30 μm; The particle size of the porous composite phosphate particles is 1-10 μm; The particle size of the zinc oxide is 0.01-1 μm.

3. The composite powder with directional oil absorption performance according to claim 1, characterized in that: The porous composite phosphate particles are porous calcium-magnesium composite phosphate particles.

4. The composite powder with directional oil absorption performance according to claim 1, characterized in that: The porous composite phosphate particles are porous composite phosphate particles treated with a surfactant; The flaky synthetic fluorphlogopite is a flaky synthetic fluorphlogopite treated with a surfactant; The surfactant is selected from at least one of myristoyl glutamic acid, palmitoyl glycine, stearoyl arginine, lauroyl lysine, hydrogenated polydimethylsiloxane, triethoxycaprylylsilane, aluminum hydroxide, stearic acid, and cyclopentasiloxane.

5. The composite powder with directional oil absorption performance according to claim 1, characterized in that: Calculated by weight, a composite powder with directional oil absorption performance includes: 10-30 weight parts of porous composite phosphate particles, 40-80 weight parts of flaky synthetic fluorphlogopite, 5-20 weight parts of zinc oxide and 1-10 weight parts of surfactant.

6. A method for preparing a composite powder having directional oil absorption performance according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step S1, adding an aqueous solution containing calcium ions and magnesium ions into a disodium hydrogen phosphate solution to perform a precipitation reaction, thereby obtaining a suspension containing calcium and magnesium phosphate precipitates; Step S2, spray drying the suspension containing calcium magnesium phosphate precipitate to obtain calcium magnesium phosphate precipitate; Step S3, calcining the calcium magnesium phosphate precipitate at high temperature to obtain porous calcium magnesium composite phosphate particles; Step S4, uniformly mixing the porous calcium-magnesium composite phosphate particles, the flaky synthetic fluorphlogopite and the surfactant and performing surface treatment to obtain the surfactant-treated porous calcium-magnesium composite phosphate particles and the surfactant-treated flaky synthetic fluorphlogopite; Step S5, uniformly mixing the porous calcium-magnesium composite phosphate particles treated with a surfactant, the flaky synthetic fluorphlogopite treated with a surfactant, and zinc oxide to obtain a composite powder with directional oil absorption performance.

7. The method for preparing a composite powder having directional oil absorption performance according to claim 6, characterized in that: The precipitation reaction in step S1 specifically includes: Step S11, adding the aqueous solution containing calcium ions and magnesium ions dropwise into the disodium hydrogen phosphate solution at a rate of 0.5-2 L / h and stirring to obtain a mixed solution; Step S12, keeping the mixed solution at 85-95° C. for 1-5 hours and aging for 6-18 hours to obtain a suspension containing calcium magnesium phosphate precipitate.

8. Use of the composite powder with directional oil absorption performance according to any one of claims 1 to 5 in the preparation of oil-absorbing cosmetics.

9. The use according to claim 8, characterized in that: The oil-absorbing cosmetics include oil-absorbing paper, oil-absorbing facial mask, oil-absorbing foundation, oil-absorbing loose powder or oil-control liquid foundation.

10. A color cosmetic, characterized in that: The composite powder having directional oil absorption performance comprises the composite powder according to any one of claims 1 to 5.

Images