Soft cosmetic brush hair capable of easily grabbing powder and preparation method of soft cosmetic brush hair

Abstract

The invention relates to the field of cosmetic brush hair processing, in particular to soft cosmetic brush hair easy to grab powder and a preparation method of the soft cosmetic brush hair. The invention discloses an antibacterial plastic film which is prepared from the following raw materials in percentage by weight: 35-45% of polyhexamethylene adipamide, 15-20% of porous solid filler, 10-15% of carboxymethyl cellulose, 5-8% of polyvinyl alcohol, 10-15% of polyethylene, 2-3% of fatty alcohol oxyalkylene ether phosphate, 1-2% of an antibacterial agent and the balance of a modifier, the cosmetic brush prepared according to the formula is good in hair softness and high in powder grabbing capacity, so that the cosmetic can be more uniformly smeared on the skin, and meanwhile, the comfort of the cosmetic brush during use is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of cosmetic brush bristle processing, and more specifically, to a cosmetic brush bristle that is soft and easy to grasp powder and a preparation method thereof. Background Art

[0002] Makeup brushes are a makeup tool that can apply foundation, concealer, blush, eye shadow and other cosmetics evenly and smoothly to the skin to avoid color difference and patches. The bristles on the makeup brushes are one of the important factors that determine whether the makeup brushes are easy to use. The existing makeup brush bristles are mainly animal hair and artificial makeup brush bristles. Animal hair has natural softness and skin-friendliness, which can reduce irritation to the skin. At the same time, because animal hair itself has a hair scale structure, it can more effectively grasp and release cosmetics, making the makeup more natural and lasting. However, animal hair makeup brushes need to be cleaned and maintained regularly, otherwise it is easy to breed bacteria. Frequent cleaning can easily damage the structure of the makeup brush bristles and reduce the service life of the makeup brush bristles.

[0003] In order to extend the life of makeup brush bristles, most manufacturers have begun to use artificial fiber bristles instead of animal bristles. Artificial makeup brush bristles are hard in texture, have strong washability and durability, and can withstand multiple washings without deformation or damage. However, due to the smooth surface of artificial makeup brushes, the powder-grabbing ability is usually weak. When applying cosmetics, it is necessary to take powder several times to achieve the ideal makeup effect. At the same time, due to its hard texture, it affects the comfort of the skin. When using it, if the technique is improper or the force is too strong, it will cause irritation or discomfort to the skin. Summary of the invention

[0004] In order to improve the problem that artificial makeup brush bristles have a hard texture and poor powder-grabbing ability, the present application provides a soft makeup brush bristle that is easy to grasp powder and a preparation method thereof.

[0005] In a first aspect, the present application provides a cosmetic brush with soft bristles that are easy to grasp powder, using the following technical solution: A cosmetic brush bristle that is soft and easy to grasp powder is prepared from the following raw materials in percentage by weight: Poly(hexamethylene adipate) 35-45% Porous solid filler 15-20% Carboxymethyl cellulose 10-15% Polyvinyl alcohol 5-8% Polyethylene 10-15% Fatty alcohol oxyalkylene ether phosphate salt 2-3% Antimicrobial 1-2% The rest is modifier The modifier is composed of polydimethylhydroxysiloxane, chitosan and lecithin.

[0006] By adopting the above technical solution, the prepared makeup brush has good softness and strong powder-grabbing ability, so that cosmetics can be applied to the skin more evenly, while ensuring the comfort of the makeup brush when in use.

[0007] In this application, polyhexamethylene adipate is used as the main raw material to improve the hardness and wear resistance of the makeup brush bristles, which is conducive to improving the durability of the makeup brush bristles. However, the water absorption of polyhexamethylene adipate is strong, which will lead to poor stability of the makeup brush bristles in a humid environment and a short service life. In this regard, polyethylene is added to be shared with polyhexamethylene adipate in this application to reduce the water absorption performance of the makeup brush bristles, improve the water washability of the makeup brush bristles, and prevent the bristles from being deformed or damaged after multiple washings. The powder-grabbing ability of the makeup brush bristles prepared from polyethylene and polyhexamethylene adipate is weak. In this application, porous solid fillers are added to enhance the powder-grabbing performance of the makeup brush bristles. The reason is that the porous solid fillers increase the specific surface area of ​​the bristles, thereby enhancing the powder-grabbing ability, that is, the porous structure makes it easier for cosmetics to adhere to the bristles, reducing the number of powder removal times and improving the makeup efficiency. Polyvinyl alcohol has good softness and skin-friendliness. When used together with polyethylene and polyhexamethylene adipate, it can greatly improve the softness and light skin property of the makeup brush bristles and improve the comfort of use of the makeup brush bristles.

[0008] Carboxymethyl cellulose promotes close bonding between the raw materials, increases the lubricity and softness of the bristles, and helps cosmetics adhere to the bristles better, improving the powder-grabbing effect. Fatty alcohol oxyalkylene ether phosphate salts have good emulsifying, dispersing and wetting properties. In cosmetic brush bristles, they can improve the wettability and permeability of the bristles to cosmetics, thereby improving the powder-grabbing effect and helping to evenly apply cosmetics on the skin.

[0009] The modifier is composed of polydimethylhydroxysiloxane, chitosan and lecithin, which helps to improve the softness, skin affinity and powder grabbing ability of the bristles. Among them, polydimethylhydroxysiloxane has excellent lubricity and softness, which can reduce the friction coefficient of the bristles, improve the comfort during use, and reduce skin irritation; chitosan has natural skin affinity and moisturizing properties, which can enhance the affinity between the bristles and the skin, and further improve the comfort of use; lecithin has a good lubricating effect and can form a protective film on the surface of the makeup brush bristles, which not only improves the softness and feel of the fiber, but also effectively reduces the friction between the makeup brush bristles, reducing the breakage and wear of the makeup brush bristles.

[0010] Antibacterial agents ensure the hygiene of the bristles, reduce bacterial growth, and improve safety of use.

[0011] Preferably, the weight ratio of the polydimethylhydroxysiloxane, the chitosan and the lecithin is (4-5):7:(1-3).

[0012] By adopting the above technical solution, the dosage of polydimethylhydroxysiloxane, chitosan and lecithin is optimized, and the softness, skin affinity and powder grabbing performance of the makeup brush bristles are further improved.

[0013] Preferably, the porous solid filler includes at least one of bamboo charcoal powder, activated carbon powder, ceramic powder, diatomaceous earth powder and zeolite powder.

[0014] By adopting the above technical solution and optimizing the types of porous solid fillers, the powder grabbing performance of the makeup brush bristles can be further improved, providing users with a better usage experience.

[0015] Preferably, the porous solid filler is a modified porous solid filler, which is prepared by the following method: 1) mixing the porous solid filler with hexamethylphosphoric acid triamide and water at a stirring temperature of 70-90° C., filtering, taking the filter residue, and eluting with ethanol to obtain an activated porous solid filler; 2) under nitrogen protection, adding activated porous solid filler and aminosilane coupling agent, stirring and reflux reaction for 2-3h, the reaction temperature is 80-90°C, after cooling to room temperature, filtering, eluting with ethanol, to obtain silanized porous solid filler; 3) Mixing the silanized porous solid filler and polyethylene glycol, stirring, and heating for reaction for 1-2 hours at a heating temperature of 80-90° C. to obtain a modified porous solid filler.

[0016] Through mixing, stirring, activation and silanization, the pore structure of the porous solid filler is further optimized, the specific surface area is increased, and the adsorption capacity of cosmetic powder is improved, so that the makeup brush bristles can grab powder more effectively when applying cosmetics, reducing the need for multiple powder removal. The porous solid filler is activated by mixing hexamethylphosphoric triamide and water, further expanding the pore structure of the filler, increasing its specific surface area and adsorption capacity. The aminosilane coupling agent reacts with the activated porous solid filler, and the silane group chemically bonds with the filler surface to form a silanization layer. The silanization layer not only enhances the stability and durability of the filler surface, but also introduces lipophilic groups, improving the compatibility and adsorption effect of the filler with cosmetics. Polyethylene glycol is mixed and heated with the silanized porous solid filler to react, so that the polyethylene glycol is attached to the filler surface or filled in the pores. The lubricating and softening effects of polyethylene glycol make the combination of the filler and the bristle substrate softer and more elastic, and also help the uniform distribution and release of cosmetics on the bristles.

[0017] Preferably, the weight parts of raw materials used to prepare the modified porous solid filler are as follows: 15-20 parts of porous solid filler 3-6 parts of hexamethylphosphoric acid triamide 25-30 parts water 5-8 parts of aminosilane coupling agent Polyethylene glycol 6-9 parts.

[0018] By adopting the above technical scheme, the amount of raw materials used in preparing modified porous solid fillers is optimized, the porous solid fillers are activated, and the reaction efficiency of the subsequent activated porous solid fillers and aminosilane coupling agents is improved, so that the powder grabbing performance and comfort of the makeup brush bristles are greatly improved.

[0019] Preferably, the aminosilane coupling agent is at least one of 3-aminopropyltrimethylsilane, 3-aminopropyltriethoxysilane, N-(aminoethyl)-aminopropyltrimethoxysilane, N-(aminoethyl)-aminopropylmethyldimethoxysilane or N-(aminoethyl)-aminopropyltriethoxysilane.

[0020] By adopting the above technical scheme, the reaction efficiency of the aminosilane coupling agent and the activated porous solid filler is improved, and a stable silanization layer is formed, thereby improving the adsorption capacity, dispersibility, compatibility and softness of the filler.

[0021] Preferably, the number average molecular weight of the poly(hexamethylene adipate) is 10,000-100,000.

[0022] By adopting the above technical solution, the number average molecular weight of polyhexamethylene adipate is optimized, so that the makeup brush bristles can maintain a stable shape during use and are not easily deformed or broken, thereby extending the service life of the bristles. At the same time, the flexibility of the makeup brush bristles is increased, so that the bristles can provide better comfort and fit when contacting the skin, reducing irritation and discomfort to the skin.

[0023] Preferably, the molecular weight of the polyvinyl alcohol is 2000-10000.

[0024] By adopting the above technical solution, the molecular weight of polyvinyl alcohol is optimized, so that cosmetics can be more firmly attached to the bristles, reducing shedding and waste during the application process, and improving the durability of makeup. At the same time, it can improve the softness and lubricity of the bristles, making the bristles more comfortable when in contact with the skin, reducing friction and irritation to the skin.

[0025] Preferably, the polyethylene is obtained by mixing high-density polyethylene and low-density polyethylene in a weight ratio of 1:(5-6).

[0026] High-density polyethylene has high strength and hardness, while low-density polyethylene has good flexibility and processability. By mixing these two types of polyethylene, the advantages of both can be combined, so that the makeup brush bristles have a certain degree of hardness and durability, while maintaining good softness and touch. At the same time, the combination of the two can form a more dense and uniform structure, which helps to improve the wear resistance of the bristles. This means that the bristles can withstand the wear and tear of multiple washings and uses, and maintain their original appearance and performance.

[0027] In a second aspect, the present application provides a method for preparing soft and easy-to-grasp powder cosmetic bristles, using the following technical scheme: A method for preparing soft and easy-to-grasp powder cosmetic bristles, comprising the following preparation steps: S1, mixing poly(hexamethylene adipate), a porous solid filler, carboxymethyl cellulose, polyvinyl alcohol, polyethylene, fatty alcohol oxyalkylene ether phosphate, an antibacterial agent and a modifier to obtain a mixture; S2, melt-spinning the mixture through a screw extruder, cooling it to room temperature, applying oil, drawing it, and winding it to obtain soft and powder-grabbing makeup brush bristles.

[0028] Preferably, the screw extruder is a twin-screw extruder, and the temperatures of each section are: zone one 215-225°C, zone two 225-235°C, zone three 235-245°C, zone four 240-250°C, zone five 245-250°C, zone six 245-255°C, zone seven 240-250°C, zone eight 235-245°C, zone nine 235-245°C, and the head temperature is 230-240°C.

[0029] Preferably, the spinning speed is 400-600 m / min.

[0030] Preferably, the drafting ratio is 2-5 times.

[0031] The cosmetic brush bristles prepared by the method of the present application have excellent performance in softness, powder holding ability and durability. The softness is moderate, which will not irritate the skin too much and provide a comfortable touch; the powder holding ability is strong, which can easily absorb and evenly release cosmetics; the durability is good, which can withstand multiple washings and uses without being easily deformed or damaged.

[0032] By adopting the above technical solution, the components are fully mixed and evenly mixed. Through melt spinning, the raw materials are melted at high temperature and extruded into filaments, which helps the components to fully fuse and react to form a stable internal structure. At the same time, melt spinning technology can also accurately control the diameter and shape of the bristles to meet different usage requirements.

[0033] Preferably, the soft and powder-grabbing cosmetic brush bristles have a fineness of 0.1-0.4 dtex.

[0034] By adopting the above technical solution, the makeup brush bristles are made softer, reducing irritation and discomfort to the skin, while better absorbing and grabbing cosmetics, especially powdery products, making the makeup process smoother and easily achieving a uniform and natural makeup effect.

[0035] In summary, this application has the following beneficial effects: 1. In the present application, poly(hexamethylene adipate), porous solid filler, carboxymethyl cellulose, polyvinyl alcohol, polyethylene, fatty alcohol oxyalkylene ether phosphate, antibacterial agent and modifier are used together, wherein the modifier is polydimethylhydroxysiloxane, chitosan and lecithin, so that the makeup brush bristles have sufficient strength and durability to withstand multiple washing and use, and maintain good softness and powder-grabbing ability, thereby improving the efficiency and comfort of makeup. DETAILED DESCRIPTION Example

[0036] Polydimethylhydroxysiloxane was purchased from Nantong Runfeng Petrochemical Co., Ltd. with an EINECS number of 615-070-3.

[0037] Chitosan was purchased from Guangdong Hongyou Biotechnology Co., Ltd. and the model was food grade.

[0038] High-density polyethylene was purchased from Shanghai Qianfu Industrial Co., Ltd., model number M80064.

[0039] Low-density polyethylene was purchased from Kunshan Plugstar Plastics Co., Ltd., model number 10803-020.

[0040] Example 1 A soft makeup brush bristle that is easy to grasp powder is prepared by the following method: S1, 350g of polyhexamethylene adipate, 200g of porous solid filler (bamboo charcoal powder), 150g of carboxymethyl cellulose, 50g of polyvinyl alcohol, 150g of polyethylene (high-density polyethylene), 20g of fatty alcohol oxyalkylene ether phosphate salt (fatty alcohol polyoxyethylene ether phosphate sodium salt), 20g of antibacterial agent (FCG002 silver ion antibacterial agent) and 60g of modifier are mixed to obtain a mixture; S2. The mixture is melt-spun through a screw extruder, cooled to room temperature, oiled, drawn, and wound to obtain soft, powder-grabbing makeup brush bristles with a fineness of 0.1 dtex.

[0041] The weight ratio of polydimethylhydroxysiloxane, chitosan and lecithin is 4:7:1.

[0042] The number average molecular weight of polyhexamethylene adipate is 10,000.

[0043] The molecular weight of polyvinyl alcohol is 2000.

[0044] Preferably, the screw extruder is a twin-screw extruder, and the temperatures of each section are: zone 1 215°C, zone 2 225°C, zone 3 235°C, zone 4 240°C, zone 5 245°C, zone 6 245°C, zone 7 240°C, zone 8 235°C, zone 9 235°C, and the head temperature is 230-240°C.

[0045] Preferably, the spinning speed is 400 m / min.

[0046] Preferably, the drafting ratio is 2 times.

[0047] The difference between Example 2-3 and Example 1 is that the types of raw materials, amounts and experimental parameters for preparing soft and easy-to-grasp powder makeup brush bristles are different. The specific differences are shown in Table 1: Table 1 Types of raw materials, amounts and experimental parameters for preparing soft and easy-to-grasp powder makeup brush bristles in Examples 1-3 Example 4 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the weight ratio of polydimethylhydroxysiloxane, chitosan and lecithin is 7:4:1.

[0048] Example 5 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the weight ratio of polydimethylhydroxysiloxane, chitosan and lecithin is 4:1:7.

[0049] Example 6 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the weight ratio of polydimethylhydroxysiloxane, chitosan and lecithin is 1:1:1.

[0050] Example 7 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the number average molecular weight of polyhexamethylene adipate is 110,000.

[0051] Example 8 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the number average molecular weight of polyhexamethylene adipate is 9000.

[0052] Example 9 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the molecular weight of the polyvinyl alcohol is 1500.

[0053] Example 10 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the porous solid filler is a modified porous solid filler, which is prepared by the following method: 1) Mixing 200 g of a porous solid filler (bamboo charcoal powder), 30 g of hexamethylphosphoric triamide and 250 g of water at a stirring temperature of 70° C., filtering, taking the filter residue, and eluting with ethanol to obtain an activated porous solid filler; 2) under nitrogen protection, adding activated porous solid filler and 50 g of aminosilane coupling agent (3-aminopropyltrimethylsilane), stirring and reflux reaction for 2 h, the reaction temperature is 80 ° C, after cooling to room temperature, filtering, eluting with ethanol, to obtain silanized porous solid filler; 3) The silanized porous solid filler was mixed with 60 g of polyethylene glycol (molecular weight 2000) and stirred, and heated to react for 1 hour at a heating temperature of 80° C. to obtain a modified porous solid filler.

[0054] The difference between Examples 11-12 and Example 10 is that the types, amounts and experimental parameters of the prepared modified porous solid fillers are different. The specific differences are shown in Table 2: Table 2: Type, amount and experimental parameters of modified porous solid fillers prepared in Examples 11-12 Example 13 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 10 is that hexamethylphosphoric acid triamide is not added in step 1).

[0055] Embodiment 14 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 10 is that vinyl triethoxy silane is used instead of 3-aminopropyl trimethyl silane in step 2).

[0056] Embodiment 15 A cosmetic brush with soft bristles that is easy to grasp powder. The difference between this embodiment and embodiment 10 is that polyethylene glycol is not added in step 3).

[0057] Example 16 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the polyethylene is obtained by mixing high-density polyethylene and low-density polyethylene in a weight ratio of 1:5.

[0058] Embodiment 17 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the polyethylene is obtained by mixing high-density polyethylene and low-density polyethylene in a weight ratio of 1:1.

[0059] Embodiment 18 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the polyethylene is low-density polyethylene.

[0060] Embodiment 19 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 10 is that the polyethylene is obtained by mixing high-density polyethylene and low-density polyethylene in a weight ratio of 1:6.

[0061] Comparative Example Comparative Example 1 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the modifier is polydimethylhydroxysiloxane.

[0062] Comparative Example 2 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the modifier is chitosan.

[0063] Comparative Example 3 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the modifier is lecithin.

[0064] Comparative Example 4 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the modifier is polydimethylhydroxysiloxane and chitosan in a weight ratio of 4:7.

[0065] Comparative Example 5 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the modifier is polydimethylhydroxysiloxane and lecithin in a weight ratio of 4:8.

[0066] Comparative Example 6 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the modifier is chitosan and lecithin in a weight ratio of 7:1.

[0067] Comparative Example 7 A cosmetic brush with soft bristles that are easy to grasp powder. The difference between this embodiment and embodiment 1 is that the bamboo charcoal powder is replaced with silicon dioxide.

[0068] Comparative Example 8 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that carboxymethyl cellulose is replaced by methyl cellulose.

[0069] Comparative Example 9 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that polyvinyl alcohol is replaced by polyether polyol.

[0070] The powder mass of the polyether polyol is 2000.

[0071] Comparative Example 10 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that polyethylene is replaced by polyethylene terephthalate.

[0072] The number average molecular weight of polyethylene terephthalate is 10,000.

[0073] Comparative Example 11 A cosmetic brush bristle that is soft and easy to grasp powder. The difference between this embodiment and embodiment 1 is that the sodium salt of fatty alcohol oxyalkylene ether phosphate is replaced by sodium dodecyl sulfate.

[0074] Detection method / test method Sample preparation: The soft and powder-grabbing makeup brush bristles of Examples 1-19 and Comparative Examples 1-11 are respectively prepared into makeup brushes to obtain samples for later use.

[0075] Powder sticking test: prepare a piece of white paper, choose black eye shadow powder, use a makeup brush to dip the eye shadow powder, each time the strength and angle of the powder should be consistent, then use the makeup brush to draw a straight line on the white paper and test the length of the straight line.

[0076] Softness and skin-friendliness test: 100 people, 25 men and 25 women, aged between 25 and 35, were selected. The samples were brushed back and forth on their faces, and the number of people who thought the samples were soft and light on the skin was recorded.

[0077] Washability test: Place the sample in hot water at 60°C, soak for 24 hours, take it out, dry it, and then test its powder-grabbing performance according to the powder-adhesive test, and test its softness and skin-friendliness according to the softness and skin-friendliness test. The experimental data are shown in Table 3: Table 3 Experimental data of Examples 1-19 and Comparative Examples 1-11 By comparing Example 1 with Comparative Examples 1-6, the length of Comparative Examples 1-6 in the powder grabbing performance test is not as good as that of Example 1, and the length change in Comparative Examples 1-6 after the water test is much greater than that of Example 1; the number of people in the softness and skin-friendliness test of Comparative Examples 1-6 is less than that of Example 1, and the number of people in Comparative Examples 1-6 after the water washing test is greater than that of Example 1 (except for Comparative Example 5), indicating that in the present application, by using polydimethylhydroxysiloxane, chitosan and lecithin together to prepare a modifier, it is beneficial to improve the powder grabbing performance, softness and skin-friendliness and water resistance of the cosmetic brush bristles.

[0078] Comparing Example 1 with Comparative Examples 7-11, the length of Comparative Examples 7-11 in the powder grabbing performance test is not as good as that of Example 1, and the length changes in Comparative Examples 8, 9 and 11 after the water test are much greater than that in Example 1; the number of people in the softness and skin-friendliness test of Comparative Examples 7-11 is less than that of Example 1, and the number of people in Comparative Examples 8, 9 and 11 after the water washing test is greater than that of Example 1, indicating that in the present application, by using porous solid fillers, carboxymethyl cellulose, polyvinyl alcohol, polyethylene and fatty alcohol oxyalkylene ether phosphate salts to prepare cosmetic brush bristles, it is beneficial to improve the powder grabbing performance, softness and skin-friendliness, and water resistance of the cosmetic brush bristles.

[0079] Comparing Example 1 with Example 4-6, the length of Example 4-6 in the powder grabbing performance test is not as good as that of Example 1, and the length change in Example 4-6 after the water test is much greater than that of Example 1; the number of people in Example 4-6 in the softness and skin-friendliness test is less than that of Example 1, and the number of people in Example 4-6 after the water washing test is greater than that of Example 1, indicating that optimizing the dosage of polydimethylhydroxysiloxane, chitosan and lecithin is beneficial to improving the powder grabbing performance, softness and skin-friendliness, and water resistance.

[0080] Comparing Example 1 with Examples 7-9, Example 7-9 is not much different from Example 1 in the powder grabbing performance test; however, the number of people in Example 7-9 in the softness and skin-friendliness test is less than that in Example 1, and the change in the number of people in Example 7-9 after the water washing test is greater than that in Example 1, indicating that by optimizing the molecular weight of poly(hexamethylene adipate)diamine and polyvinyl alcohol, it is beneficial to improve the softness, skin-friendliness and water resistance of the cosmetic brush bristles.

[0081] Comparing Example 1 with Example 10-12, the length of Example 10-12 in the powder grabbing performance test is greater than that of Example 1, and the length change of Example 10-12 after the water test is much smaller than that of Example 1; the number of people in Example 10-12 in the soft skin-friendly test is greater than that of Example 1, and the number of people in Example 10-12 after the water washing test is smaller than that of Example 1; Comparing Example 10 with Examples 13-15, the length of Examples 13-15 in the powder grabbing performance test is shorter than that of Example 10, and the length change of Examples 13-15 after the water test is much greater than that of Example 10; the number of people in Examples 13-15 in the soft skin-friendly test is shorter than that of Example 10, and the number of people in Examples 13-15 after the water washing test is less than that of Example 10; It can be seen from the experimental data of Examples 1 and 10-15 that the use of the modified porous solid filler prepared in the present application is beneficial to improving the powder-grabbing performance, softness, skin-friendliness and water resistance of the cosmetic brush bristles.

[0082] Comparing Example 1 with Examples 16-18, the length of Example 16 in the powder grabbing performance test is greater than that of Examples 1 and 17-18, and the length change in Example 16 after the water test is much smaller than that of Examples 1 and 17-18; the number of people in the soft skin-friendly test of Examples 1 and 16-17 is basically the same, but the number of people in Example 16 after the water washing test is smaller than that of Examples 1 and 17-18; Comparing Example 10 with Example 19, the length of Example 19 in the powder grabbing performance test is greater than that of Example 108, and the length change in Example 19 after the water test is much smaller than that of Example 10; the number of people in the soft skin-friendly test of Examples 10 and 19 is basically the same, but the number of people in Example 16 after the water washing test is smaller than that of Example 19; It can be seen from the experimental data of Examples 1, 10, and 16-19 that optimizing the type and amount of polyethylene can help improve the powder-grabbing performance, softness, skin-friendliness, and water resistance of the makeup brush bristles.

[0083] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A cosmetic brush with soft bristles that is easy to grasp powder, characterized in that: Prepared from the following raw materials in weight percentage: Poly(hexamethylene adipate) 35-45% Porous solid filler 15-20% Carboxymethyl cellulose 10-15% Polyvinyl alcohol 5-8% Polyethylene 10-15% Fatty alcohol oxyalkylene ether phosphate 2-3% Antimicrobial agent 1-2% The rest is modifier The modifier is composed of polydimethylhydroxysiloxane, chitosan and lecithin.

2. The soft and powder-grabbing cosmetic brush bristles according to claim 1, characterized in that: The weight ratio of the polydimethylhydroxysiloxane, the chitosan and the lecithin is (4-5):7:(1-3).

3. The soft and powder-grabbing cosmetic brush bristles according to claim 2, characterized in that: The porous solid filler includes at least one of bamboo charcoal powder, activated carbon powder, ceramic powder, diatomaceous earth powder and zeolite powder.

4. The soft and powder-grabbing cosmetic brush bristles according to claim 3, characterized in that: The porous solid filler is a modified porous solid filler, which is prepared by the following method: 1) Mixing the porous solid filler with hexamethylphosphoric acid triamide and water at a stirring temperature of 70-90° C., filtering, taking the filter residue, and eluting with ethanol to obtain an activated porous solid filler; 2) Under nitrogen protection, add activated porous solid filler and aminosilane coupling agent, stir and reflux for 2-3h, the reaction temperature is 80-90°C, cool to room temperature, filter, and rinse with ethanol to obtain silanized porous solid filler; 3) Mixing and stirring the silanized porous solid filler and polyethylene glycol, heating the mixture for reaction for 1-2 hours at a heating temperature of 80-90° C., to obtain a modified porous solid filler.

5. The soft and powder-grabbing cosmetic brush bristles according to claim 4, characterized in that: The weight parts of raw materials used to prepare the modified porous solid filler are as follows: 15-20 parts of porous solid filler 3-6 parts of hexamethylphosphoric acid triamide 25-30 parts water 5-8 parts of aminosilane coupling agent Polyethylene glycol 6-9 parts.

6. The soft and powder-grabbing cosmetic brush bristles according to claim 4, characterized in that: The aminosilane coupling agent is at least one of 3-aminopropyltrimethylsilane, 3-aminopropyltriethoxysilane, N-(aminoethyl)-aminopropyltrimethoxysilane, N-(aminoethyl)-aminopropylmethyldimethoxysilane or N-(aminoethyl)-aminopropyltriethoxysilane.

7. The soft and powder-grabbing cosmetic brush bristles according to claim 1, characterized in that: The number average molecular weight of the polyhexamethylene adipate is 10,000-100,000.

8. The soft and powder-grabbing cosmetic brush bristles according to claim 1, characterized in that: The molecular weight of the polyvinyl alcohol is 2000-10000.

9. The soft and powder-grabbing cosmetic brush bristles according to claim 1, characterized in that: The polyethylene is obtained by mixing high-density polyethylene and low-density polyethylene in a weight ratio of 1:(5-6).

10. A method for preparing the soft and easy-to-grasp powder cosmetic brush bristles according to any one of claims 1 to 9, characterized in that: The method comprises the following preparation steps: S1, mixing poly(hexamethylene adipate), a porous solid filler, carboxymethyl cellulose, polyvinyl alcohol, polyethylene, fatty alcohol oxyalkylene ether phosphate, an antibacterial agent and a modifier to obtain a mixture; S2, putting the mixture into a screw extruder for melting, spinning, cooling to room temperature, oiling, drawing, and winding to obtain soft and powder-grabbing makeup brush bristles.

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