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:
Nov. 20, 2018
Filed:
Dec. 22, 2014
Lg Chem, Ltd., Seoul, KR;
Kwon Nam Sohn, Daejeon, KR;
Kwang Hyun Yoo, Daejeon, KR;
Won Jong Kwon, Daejeon, KR;
Kil Sun Lee, Daejeon, KR;
Seung Bo Yang, Daejeon, KR;
In Young Kim, Daejeon, KR;
Mi Jin Lee, Daejeon, KR;
Jin Yeong Lee, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
Disclosed herein are a preparation method of graphene, capable of easily preparing a graphene flake having a smaller thickness and a large area, and a dispersed composition of graphene obtained using the same. The preparation method of graphene includes applying a physical force to dispersion of a carbon-based material including graphite or a derivative thereof, and a dispersant, wherein the dispersant includes a mixture of plural kinds of polyaromatic hydrocarbon oxides, containing the polyaromatic hydrocarbon oxides having a molecular weight of 300 to 1000 in a content of 60% by weight or more, and the graphite or the derivative thereof is formed into a graphene flake having a thickness in nanoscale under application of a physical force.