Tattooing device
By using a combination of bamboo charcoal powder and additives to prepare false eyelashes, the problem of insufficient safety of false eyelashes has been solved, achieving a combination of high safety and aesthetics, especially in terms of protection of the skin around the eyes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO FUTESEN PLASTIC TECH CO LTD
- Filing Date
- 2023-12-06
- Publication Date
- 2026-07-14
AI Technical Summary
Current research on the safety of false eyelashes is insufficient and cannot meet consumers' demand for high safety, especially in terms of protecting the skin around the eyes.
False eyelashes are prepared by combining bamboo charcoal powder with additives of a specific structure through chemical and physical methods. The organosilicon quaternary ammonium salt and chlorine atoms in the additives work synergistically to exert antibacterial effects, while the bamboo charcoal powder promotes dispersion and binding, thereby improving the antibacterial properties of the false eyelashes.
The prepared false eyelashes have good antibacterial and anti-inflammatory effects, protect the skin around the eyes, are highly safe, and are also aesthetically pleasing.
Smart Images
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of cosmetic technology, specifically relating to a false eyelash based on bamboo charcoal powder and its preparation process. Background Technology
[0002] Eyelashes grow on the upper lip of the eyelid and have a protective function. False eyelashes are artificial eyelashes used to beautify the eyes, generally by lengthening and thickening them to make the eyes look fuller and more expressive. Materials used to make false eyelashes include synthetic fibers and hair; different materials produce different effects and have varying levels of safety.
[0003] Current research on the safety of false eyelashes is limited, while as people's living standards improve, their demands for the safety of false eyelashes are also increasing. Bamboo charcoal powder is rich in minerals and various trace elements, possessing antibacterial and anti-inflammatory properties. When used in false eyelashes, it can help protect the delicate skin around the eyes. However, there is virtually no research on the use of bamboo charcoal powder in false eyelashes. Therefore, there is an urgent need to design a bamboo charcoal powder-based false eyelash product that can meet the needs of the general public. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a false eyelash based on bamboo charcoal powder and its preparation process.
[0005] The objective of this invention can be achieved through the following technical solutions:
[0006] A type of false eyelashes based on bamboo charcoal powder comprises the following raw materials in weight percentage: 90-96% polyester granules, 3-8% bamboo charcoal powder, and 1-2% additives;
[0007] Furthermore, the polyester particles are one of polyethylene terephthalate particles, polybutylene terephthalate particles, and polyarylate particles.
[0008] Furthermore, the bamboo charcoal powder is prepared through the following steps:
[0009] Add 2g of bamboo charcoal and 200mL of 65% nitric acid to a 500mL three-necked flask, heat to 80℃ and stir under reflux for 6 hours. After the stirring is complete, cool to room temperature, filter and wash with deionized water until the filtrate is neutral. Dry the filter residue at 110℃ for 12 hours to obtain bamboo charcoal powder.
[0010] Furthermore, the bamboo charcoal powder is 25,000 mesh.
[0011] Furthermore, the auxiliary agent is prepared by the following steps:
[0012] S1. Under nitrogen protection at room temperature, propyltriethoxysilane, 3-chloro-1-propanol, and N,N-dimethylamide were added to a three-necked flask and stirred until homogeneous. Triethylamine was then added, and the mixture was heated to 75°C while stirring. The mixture was stirred thoroughly at 75°C for 3 hours. After the reaction was completed, the mixture was cooled to room temperature and distilled under reduced pressure to obtain intermediate 1. The molar ratio of propyltriethoxysilane, 3-chloro-1-propanol, triethylamine, and N,N-dimethylamide was 12.4 g: 5 mL: 3 mL: 50 mL.
[0013] Under the action of the organic amine catalyst—triethylamine, the isocyanate group of propyltriethoxysilane undergoes an addition reaction with the hydroxyl group of 3-chloro-1-propanol, as shown in the following reaction process:
[0014]
[0015] S2. Under nitrogen protection at room temperature, intermediate 1 and dimethyl sulfoxide were added to a four-necked flask and stirred thoroughly until homogeneous. The temperature was then raised to 40°C, and tetradecyl dimethyl tertiary amine was slowly added using a constant pressure separatory funnel. The temperature was then raised to 50°C, and the mixture was stirred at 50°C for 8 hours. After the reaction was completed, the mixture was cooled to room temperature, and most of the solvent was removed by vacuum distillation. The mixture was then purified by column chromatography (using a mixed solvent of cyclohexane and ethyl acetate as the eluent, with a volume ratio of 8:2). The eluent was removed by vacuum distillation to obtain intermediate 2. The ratio of intermediate 1, tetradecyl dimethyl tertiary amine, and dimethyl sulfoxide was 8.5 g: 8 mL: 50 mL.
[0016] The -Cl group of intermediate 1 and the tertiary amine of tetradecyl dimethyl tertiary amine undergo a quaternization reaction under heating conditions to form a quaternary ammonium salt. The reaction process is shown below:
[0017]
[0018] S3. Intermediate 2, triclosan, and tetraisopropoxytitanium were added to a double-necked flask containing toluene and reacted at 90°C for 24 h. After the reaction was completed, the mixture was cooled to room temperature. The reaction product was washed twice with tartaric acid and then three times with sodium bicarbonate solution. The organic phase was dried over anhydrous magnesium sulfate, filtered, purified by vacuum distillation, and column chromatography (using a mixture of chloroform and diethyl ether as the eluent, with a volume ratio of 9:1). Finally, the eluent was removed by vacuum distillation to obtain the auxiliary agent. The molar ratio of intermediate 2, triclosan, tetraisopropoxytitanium, and toluene was 9.3 g: 4.6 g: 0.018 g: 60 mL.
[0019] Under the action of the catalyst tetraisopropoxytitanium, the silanoxy group of intermediate 2 and the hydroxyl group of triclosan undergo the following chemical reaction, and the reaction process is shown below:
[0020]
[0021] The adjuvant molecule contains an organosilicon quaternary ammonium salt structure. This structure exhibits excellent bactericidal effects against Staphylococcus aureus and Escherichia coli. This is because the cations in the organosilicon quaternary ammonium salt structure are adsorbed onto the negatively charged bacterial cells via electrostatic forces and hydrogen bonds. Furthermore, hydrophobic binding occurs between the surfactant and the protein, causing a ventricular barrier effect in the bacteria. Simultaneously, the interaction between the surfactant molecule and the protein alters the permeability of the bacterial membrane, leading to changes in cell structure, cell rupture, and ultimately bacterial death. The antibacterial activity of quaternary ammonium salts is also related to the length of the alkyl chain. When the alkyl chain has 14 carbon atoms, the antibacterial activity of quaternary ammonium salt antibacterial agents is strongest. Therefore, a long carbon chain (14 carbons) enhances the antibacterial activity of the adjuvant. The adjuvant molecule also contains three chlorine atoms, which possess strong oxidizing and electron affinity. When the adjuvant comes into contact with bacteria or fungi, the chlorine atoms react with the lipid molecules of their cell membrane, leading to cell membrane degradation. Increased damage and permeability disrupt the intracellular and extracellular environment, hindering the normal exchange of essential substances, impeding cell metabolism, and ultimately leading to the death of bacteria and fungi. It works synergistically with organosilicon quaternary ammonium salts to enhance the antibacterial properties of the adjuvant. The adjuvant structure also contains silanoxy groups, which can form chemical bonds and interactions with the hydroxyl groups on the surface of bamboo charcoal powder. This promotes the high dispersion of the bamboo charcoal powder, allowing the mineral-rich and trace-element-rich powder to exert its antibacterial and anti-inflammatory effects. Furthermore, acid-treated bamboo charcoal powder contains a large number of carboxyl and hydroxyl groups, which can interact with the unreacted hydroxyl and carboxyl groups at the ends of the matrix particles. Therefore, bamboo charcoal powder also promotes the compatibility and binding of the adjuvant with the matrix particles, thus enabling the adjuvant to exert its antibacterial effect. In addition, the adjuvant molecule also contains benzene rings, ester groups, amide groups, etc. Due to similar compatibility, the adjuvant can be well-compatible with the matrix particles, thus fully and stably exerting its antibacterial effect.
[0022] A process for preparing false eyelashes based on bamboo charcoal powder includes the following steps:
[0023] The raw materials are mixed evenly in proportion, then hot-melted, drawn into wires, and cooled to obtain false eyelashes based on bamboo charcoal powder.
[0024] The beneficial effects of this invention are as follows: The false eyelashes of this invention can be chemically or physically ground, resulting in a significant reduction in weight and environmental friendliness; the organosilicon quaternary ammonium salt structure and three chlorine atoms in the additives of this invention work synergistically to exert antibacterial effects, while the long carbon chain (14 carbons) further enhances the antibacterial effect; the additives promote the dispersion of bamboo charcoal powder, and the bamboo charcoal powder promotes the compatibility and combination of the additives and matrix particles; the two work together to improve the antibacterial properties of the false eyelashes. Therefore, the false eyelashes prepared by this invention have excellent antibacterial and anti-inflammatory effects, and can effectively protect the skin around the eyes from damage by the external environment, possessing both aesthetic appeal and high safety. Detailed Implementation
[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0026] Example 1
[0027] The specific steps for preparing the auxiliary agent are as follows:
[0028] S1. Under nitrogen protection at room temperature, 12.4 g of propyltriethoxysilane isocyanate, 5 mL of 3-chloro-1-propanol and 50 mL of N,N-dimethylamide were added to a 100 mL three-necked flask. After stirring evenly, 3 mL of triethylamine was added. The mixture was stirred and heated to 75 °C. The mixture was stirred and reacted thoroughly at 75 °C for 3 h. After the reaction was completed, the mixture was cooled to room temperature and distilled under reduced pressure to obtain intermediate 1.
[0029] S2. Under nitrogen protection at room temperature, 8.5 g of intermediate 1 and 50 mL of dimethyl sulfoxide were added to a 100 mL four-necked flask and stirred thoroughly until homogeneous. The temperature was then raised to 40 °C, and 8 mL of tetradecyl dimethyl tertiary amine was slowly added using a constant pressure separatory funnel. The temperature was then raised to 50 °C and stirred at 50 °C for 8 h. After the reaction was completed, the mixture was cooled to room temperature, purified by vacuum distillation and column chromatography (using a mixed solvent of cyclohexane and ethyl acetate as the eluent, with a volume ratio of 8:2). Vacuum distillation was then performed to obtain intermediate 2.
[0030] S3. Add 9.3 g of intermediate 2, 4.6 g of triclosan and 0.018 g of tetraisopropoxytitanium to a 100 mL double-necked flask containing 60 mL of toluene. React at 90 °C for 24 h. After the reaction is complete, cool to room temperature. Wash the reaction product twice with 5 wt% tartaric acid and three times with 5 wt% sodium bicarbonate solution. Dry the organic phase with anhydrous magnesium sulfate, filter, distill under reduced pressure, and purify by column chromatography (using a mixture of chloroform and diethyl ether as the eluent, with a volume ratio of 9:1). Finally, remove the eluent by distillation under reduced pressure to obtain the auxiliary agent.
[0031] Example 2
[0032] The specific steps for preparing the auxiliary agent are as follows:
[0033] The remaining steps remain unchanged, except for step S3 in Example 1, which is removed to prepare the additive.
[0034] Example 3
[0035] The specific steps for preparing bamboo charcoal powder are as follows:
[0036] Add 2g of bamboo charcoal and 200mL of 65% nitric acid to a 500mL three-necked flask, heat to 80℃ and stir under reflux for 6 hours. After cooling to room temperature, filter and wash with deionized water until the filtrate is neutral. Dry the filter residue at 110℃ for 12 hours to obtain bamboo charcoal powder.
[0037] Example 4
[0038] The specific steps for preparing false eyelashes are as follows:
[0039] 90% polyarylate particles, 8% bamboo charcoal powder from Example 3, and 2% additives from Example 1 were mixed evenly, then hot-melted, drawn into fibers, and cooled to obtain false eyelashes based on bamboo charcoal powder.
[0040] Example 5
[0041] The specific steps for preparing false eyelashes are as follows:
[0042] 96% polyethylene terephthalate particles, 3% bamboo charcoal powder of Example 3, and 1% additives of Example 1 were mixed evenly, then hot-melted, drawn into fibers, and cooled to obtain false eyelashes based on bamboo charcoal powder.
[0043] Example 6
[0044] The specific steps for preparing false eyelashes are as follows:
[0045] 94% polybutylene terephthalate particles, 4.5% bamboo charcoal powder of Example 3, and 1.5% additives of Example 1 were mixed evenly, then hot-melted, drawn into fibers, and cooled to obtain false eyelashes based on bamboo charcoal powder.
[0046] Comparative Example 1
[0047] The specific steps for preparing false eyelashes are as follows:
[0048] The remaining steps remain unchanged, except that the additives in Example 6 are replaced with the additives in Example 2, and false eyelashes based on bamboo charcoal powder are prepared.
[0049] Comparative Example 2
[0050] The specific steps for preparing false eyelashes are as follows:
[0051] 95% polybutylene terephthalate particles and 5% bamboo charcoal powder from Example 3 were mixed evenly, then hot-melted, drawn into fibers, and cooled to obtain false eyelashes based on bamboo charcoal powder.
[0052] The antibacterial properties of the adjuvant in Example 1 were tested, and the results are shown in the table below:
[0053]
[0054]
[0055] As can be seen from the data in the table above, the additives prepared in the embodiments of the present invention have excellent antibacterial effects. Therefore, the additives of the present invention, when used in false eyelashes, can work synergistically with bamboo charcoal powder to greatly enhance the antibacterial and anti-inflammatory effects of the false eyelashes, making them safer and more reliable to use. This allows the false eyelashes to meet the public's needs in terms of both safety and aesthetics.
[0056] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0057] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.
Claims
1. A type of false eyelashes based on bamboo charcoal powder, characterized in that, The raw materials include the following percentages by weight: 90-96% polyester granules, 3-8% bamboo charcoal powder, and 1-2% additives; The auxiliary agent is prepared through the following steps: S1. Under nitrogen protection at room temperature, propyltriethoxysilane isocyanate, 3-chloro-1-propanol and N,N-dimethylamide were added to a flask, stirred and then triethylamine was added. The mixture was heated to 75°C and reacted for 3 hours. After cooling to room temperature, it was distilled under reduced pressure to obtain intermediate 1. S2. Under room temperature and nitrogen protection, intermediate 1 and dimethyl sulfoxide were added to a flask, stirred and heated to 40°C, then tetradecyl dimethyl tertiary amine was added, and the mixture was heated to 50°C and reacted for 8 hours. After cooling to room temperature, the mixture was purified by vacuum distillation, column chromatography, and vacuum distillation to obtain intermediate 2. S3. Add intermediate 2, triclosan and tetraisopropoxytitanium to a flask containing toluene, react at 90°C for 24 h, cool to room temperature, wash with tartaric acid, then wash with sodium bicarbonate solution, dry, filter, purify by vacuum distillation and column chromatography, and then distill again under reduced pressure to obtain the auxiliary agent.
2. The false eyelashes based on bamboo charcoal powder according to claim 1, characterized in that, In step S1, the ratio of propionic acid propyltriethoxysilane, 3-chloro-1-propanol, triethylamine, and N,N-dimethylamide is 12.4 g: 5 mL: 3 mL: 50 mL.
3. The false eyelashes based on bamboo charcoal powder according to claim 1, characterized in that, The ratio of intermediate 1, tetradecyl dimethyl tertiary amine, and dimethyl sulfoxide in step S2 is 8.5 g: 8 mL: 50 mL.
4. The false eyelashes based on bamboo charcoal powder according to claim 1, characterized in that, The ratio of intermediate 2, triclosan, tetraisopropoxytitanium and toluene in step S3 is 9.3 g: 4.6 g: 0.018 g: 60 mL.
5. The false eyelashes based on bamboo charcoal powder according to claim 1, characterized in that, The polyester particles are polyethylene terephthalate particles or polybutylene terephthalate particles.
6. The false eyelashes based on bamboo charcoal powder according to claim 1, characterized in that, Bamboo charcoal powder is prepared through the following steps: Add 2g of bamboo charcoal and 200mL of nitric acid to a flask, heat to 80℃ and stir under reflux for 6 hours. After cooling to room temperature, filter, wash and dry to obtain bamboo charcoal powder.
7. The false eyelashes based on bamboo charcoal powder according to claim 6, characterized in that, The bamboo charcoal powder is 25,000 mesh.
8. The preparation process of false eyelashes based on bamboo charcoal powder according to claim 1, characterized in that, Includes the following steps: The raw materials are mixed evenly in proportion, then hot-melted, drawn into wires, and cooled to obtain false eyelashes based on bamboo charcoal powder.