The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2025
Filed:
Mar. 19, 2019
Korea Research Institute of Chemical Technology, Daejeon, KR;
Jeyoung Park, Ulsan, KR;
Dong Yeop Oh, Busan, KR;
Sung Yeon Hwang, Seoul, KR;
Hyun Gil Cha, Ulsan, KR;
Jong Geon Jegal, Ulsan, KR;
Ho Jun Kim, Ulsan, KR;
Seul A Park, Ulsan, KR;
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon, KR;
Abstract
A method for preparing an aramid nanofiber dispersion includes dissolving an aromatic polyamide-based polymer in a solution including a basic material and an aprotic polar solvent, while performing stirring so that a nanofiber is produced, wherein the aromatic polyamide-based polymer is a polymer in a form of a solid which is not spun into a fiber form, the stirring is performed at a temperature of 50° C. or lower and at a speed of 10-1000 rpm so that a time taken for the aromatic polyamide-based polymer to be dissolved and formed into an aramid nano-fiber dispersion is 80 hours or less, an aramid nanofiber in the aramid nanofiber dispersion has an average diameter of 1 to 100 nm and an average length of 0.1 to 100 μm, and the basic material includes potassium hydroxide or sodium hydroxide.