US 12,290,594 B1
Bamboo charcoal powder-based false eyelashes and preparation process thereof
Kexiu Li, Qingdao (CN); and Zhaozhong Zhang, Qingdao (CN)
Assigned to Qingdao Futesen Plastic Technology Co., Ltd, Qingdao (CN)
Filed by Qingdao Futesen Plastic Technology Co., Ltd, Qingdao (CN)
Filed on Jan. 2, 2024, as Appl. No. 18/402,112.
Claims priority of application No. 202311663757.4 (CN), filed on Dec. 6, 2023.
Int. Cl. A41G 5/02 (2006.01); A01N 55/00 (2006.01); A01N 65/44 (2009.01); A61K 8/02 (2006.01); A61K 8/58 (2006.01); A61K 8/9794 (2017.01); A61Q 1/00 (2006.01); C08J 5/06 (2006.01); C08K 3/04 (2006.01); C08K 5/5419 (2006.01)
CPC A61K 8/9794 (2017.08) [A01N 55/00 (2013.01); A01N 65/44 (2013.01); A41G 5/02 (2013.01); A61K 8/027 (2013.01); A61K 8/585 (2013.01); A61Q 1/00 (2013.01); C08J 5/06 (2013.01); C08K 3/04 (2013.01); C08K 5/5419 (2013.01); C08J 2331/06 (2013.01)] 4 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

OG Complex Work Unit Chemistry
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;

OG Complex Work Unit Chemistry
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;

OG Complex Work Unit Chemistry
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

OG Complex Work Unit Chemistry
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.