Bamboo charcoal powder-based false eyelashes and preparation process thereof

Abstract

A bamboo charcoal powder-based false eyelash is obtained by evenly mixing 90-96% of polyester particles, 3-8% of bamboo charcoal powder and 1-2% of adjuvant, subsequently hot melting, wire drawing and forming and then cooling. The false eyelash can be subjected to not only chemical sharpening tip but also physical sharpening tip, has greatly reduced weight and is environmental-friendly; an organosilicon quaternary ammonium salt structure and three chlorine atoms in the adjuvant synergistically take antibacterial effects, and a long carbon chain further enhances an antibacterial effect. The adjuvant promotes the dispersion of the bamboo charcoal powder which promotes the compatibility and combination of the adjuvant and a matrix resin, their combined action improves the antibacterial property of the false eyelashes, and therefore the prepared false eyelash has good antibacterial and anti-inflammatory effects, can well protect skins around eyes from being damaged by external environment, and has both aesthetics and high safety.

Claims

1. A false eyelash, comprising the following raw materials in percentage by mass: 90-96% of polyester matrix made by polyester particles, 3-8% of bamboo charcoal powder and 1-2% of adjuvant; wherein the adjuvant is represented by ##STR00004## and the adjuvant is prepared by the following steps: S1, adding isocyanopropyl triethoxysilane, 3-chloro-1-propanol and N,N-dimethylamide into a flask under the protection of nitrogen at room temperature, adding triethylamine after stirring, heating to 75 C., reacting for 3 h, cooling to room temperature, and then distilling at reduced pressure to obtain intermediate 1; ##STR00005## S2, adding the intermediate 1 and dimethyl sulfoxide into a flask under the protection of nitrogen at room temperature, stirring and heating to 40 C., then adding tetradecyl dimethyl tertiary amine, heating to 50 C. and reacting for 8 h, cooling to room temperature, distilling at reduced pressure, purifying via column chromatography, and then distilling at reduced pressure to obtain intermediate 2; ##STR00006## and S3, adding the intermediate 2, triclosan and tetraisopropoxy titanium into a flask equipped with toluene, reacting for 24 h at 90 C., cooling to room temperature and then washing with tartaric acid followed by washing with sodium bicarbonate, drying, filtering, distilling at reduced pressure, purifying via column chromatography, and then distilling at reduced pressure to obtain the adjuvant ##STR00007## wherein an amount ratio of isocyanopropyl triethoxy silane to 3-chloro-1-propanol to triethylamine to N, N-dimethylamide in step S1 is 12.4 g: 5 mL: 3 mL: 50 mL; an amount ratio of intermediate 1 to tetradecyl dimethyl tertiary amine to dimethyl sulfoxide in step S2 is 8.5 g: 8 mL: 50 mL; an amount ratio of intermediate 2 to triclosan to tetraisopropoxytitanium to toluene in step S3 is 9.3 g: 4.6 g: 0.018 g: 60 mL.

2. The false eyelash according to claim 1, wherein the polyester particle is one of polyethylene terephthalate particles, polybutylene terephthalate particles and polyaryl ester particles.

3. The false eyelash according to claim 1, wherein the bamboo charcoal powder is prepared by the following steps: adding 2 g of bamboo charcoal and 200 mL of nitric acid into a flask, heating to 80 C., refluxing and stirring for 6 h, cooling to room temperature, subsequently filtering, washing and drying to obtain the bamboo charcoal powder.

4. A preparation process of the false eyelash according to claim 1, comprising the following steps: uniformly mixing the raw materials of claim 1, subsequently hot melting, wire drawing and forming, and cooling to obtain the false eyelash.

Description

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(1) Next, the technical solutions in embodiments of the disclosure will be clearly and completed described in combination with embodiments of the disclosure, obviously, the described embodiments are only some embodiments of the disclosure, but not all the embodiments. Based on the embodiments of the disclosure, other embodiments obtained by persons of ordinary skill in the art without creative efforts are all included within the scope of protection of the disclosure.

Example 1

(2) An adjuvant was prepared by the following steps: S1, 12.4 g of isocyanopropyl triethoxysilane, 5 mL of 3-chloro-1-propanol and 50 mL of N, N-dimethylamide were added into a 100 mL three-necked flask under the protection of nitrogen at room temperature, triethylamine was added after evenly stirring, the above materials were heated to 75 C. while stirring and sufficiently stirred at 75 C. to react for 3 h, and the reaction product was cooled to room temperature after the reaction was ended and distilled at reduced pressure to obtain intermediate 1; S2, 8.5 g of intermediate 1 and 50 mL of dimethyl sulfoxide were added into a 100 mL four-necked flask under the protection of nitrogen at room temperature, sufficiently stirred until evenly mixing and subsequently heated to 40 C., then 8 mL of tetradecyl dimethyl tertiary amine was slowly added using a constant-pressure separating funnel, then the above materials were heated to 50 C. and stirred at 50 C. to react for 8 h, and the reaction product was cooled to room temperature after the reaction was ended, distilled at reduced pressure, purified via column chromatography (a mixed solvent of cyclohexane and ethyl acetate was selected as an eluent, and a volume ratio of cyclohexane to ethyl acetate was 8:2) and distilled at reduced pressure to obtain intermediate 2; S3, 9.3 g of intermediate 2, 4.6 g of triclosan and 0.018 g of tetraisopropoxy titanium were added into a 100 mL double-necked flask equipped with 60 mL of toluene and reacted for 24 h at 90 C., and the reaction product was cooled to room temperature after the reaction was ended and washed twice with 5 wt % tartaric acid followed by washing three times with sodium bicarbonate, and an organic phase was dried using anhydrous magnesium sulfate, then filtered, distilled at reduced pressure, purified via column chromatography (a mixed solvent of chloroform and diethyl ether was selected as an eluent, and a volume ratio of chloroform to diethyl ether was 9:1), and finally distilled at reduced pressure to remove the eluent, so as to obtain the adjuvant.

Example 2

(3) An adjuvant was prepared by the following steps:

(4) The rest steps unchanged except that step S3 in example 1 was removed, so as to prepare the adjuvant.

Example 3

(5) A bamboo charcoal powder was prepared by the following steps:

(6) 2 g of bamboo charcoal and 200 mL of 65 wt % nitric acid were added into a 500 mL three-necked flask, heated to 80 C., subjected to refluxing and stirring for 6 h, the above obtained mixture was cooled to room temperature after the refluxing and stirring was ended, filtered and washed with deionized water until filtrate was neutral, and filter residue was dried for 12 h at 110 C. to obtain the bamboo charcoal powder.

Example 4

(7) A false eyelash was prepared by the following steps:

(8) 90% of polyarylester particles, 8% of bamboo charcoal powder in example 3 and 2% of adjuvant in example 1 were uniformly mixed, and subsequently the obtained mixture was subjected to hot melting, wire drawing and forming and cooled to obtain the bamboo charcoal powder-based false eyelash.

Example 5

(9) A false eyelash was prepared by the following steps:

(10) 96% of polyethylene terephthalate particles, 3% of bamboo charcoal powder in example 3 and 1% of adjuvant in example 1 were uniformly mixed, and subsequently the obtained mixture was subjected to hot melting, wire drawing and forming and cooled to obtain the bamboo charcoal powder-based false eyelash.

Example 6

(11) A false eyelash was prepared by the following steps:

(12) 94% of Polybutylene terephthalate particles, 4.5% of bamboo charcoal powder in example 3 and 1.5% of adjuvant in example 1 were uniformly mixed, and subsequently the obtained mixture was subjected to hot melting, wire drawing and forming and cooled to obtain the bamboo charcoal powder-based false eyelash.

Comparative Example 1

(13) A false eyelash was prepared by the following steps:

(14) The rest steps unchanged except that the adjuvant in example 6 was replaced with the adjuvant in example 2, so as to prepare the bamboo charcoal powder-based false eyelash.

Comparative Example 2

(15) 95% of polybutylene terephthalate particles and 5% of bamboo charcoal powder in example 3 were uniformly mixed, and subsequently the obtained mixture was subjected to hot melting, wire drawing and forming and cooled to obtain the bamboo charcoal powder-based false eyelash.

(16) An antibacterial property test was performed on the adjuvant in example 1. The test results are seen in Table below:

(17) TABLE-US-00001 Average colony count of Total Amount positive colony Test of control of test Antibacterial microorganisms adjuvant Number group group ratio % Staphylococcus 1% 1 1.4 10.sup.7 <10 99.99 aureus Escherichia coli 2 4.6 10.sup.7 <10 99.99 Staphylococcus 1.5% 1 1.4 10.sup.7 <10 99.99 aureus Escherichia coli 2 4.6 10.sup.7 <10 99.99 Staphylococcus 2% 1 1.4 10.sup.7 <10 99.99 aureus Escherichia coli 2 4.6 10.sup.7 <10 99.99

(18) From the above data in Table, it can be seen that the adjuvants prepared in examples of the disclosure have excellent antibacterial effects. Therefore, the adjuvant of the disclosure and the bamboo charcoal powder can synergistically take antibacterial effects when used on false eyelashes, thereby greatly improving the antibacterial and anti-inflammatory effects of false eyelashes and allowing the false eyelashes to more safely and reassuringly use, so that the false eyelashes can meet the needs of the public in terms of safety and aesthetics. In the description of the specification, reference terms one embodiment, example, specific example and the like refer to a fact that specific features, structures, materials or characteristics described in conjunction with this embodiment or example are included in at least one embodiment or example of the disclosure. In the present specification, the illustrative expressions of the above terms may not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described can be appropriately combined in any one or more embodiments or examples.

(19) The above contents are only examples and explanations of the disclosure. Those skilled in the art make various modifications or supplements of the described specific embodiments, or make replacement using a similar mode, as long as they do not deviate from the invention or go beyond the scope defined in the present claims, they should all fall within the scope of protection of the disclosure.