MUMBAI, India, June 6 -- Intellectual Property India has published a patent application (202517048324 A) filed by China Petroleum & Chemical Corporation; and Sinopec (BEIJING) Research Institute Of Chemical Industry Co. Ltd., Beijing, on May 20, for 'edge-grafting-modified graphene, aqueous dispersion thereof, and preparation method therefor.'
Inventor(s) include Qi, Guicun; Jiang, Chao; Ru, Yue; Wang, Xiang; Han, Peng; Zhang, Jiangru; Cai, Chuanlun; Song, Zhihai; Guo, Zhaoyan; Hu, Chenxi; Liu, Wenlu; and Zhang, Hongbin.
The application for the patent was published on June 6, under issue no. 23/2025.
According to the abstract released by the Intellectual Property India: "The present invention belongs to the technical field of graphene preparation, and relates to an edge-grafting-modified graphene, an aqueous dispersion thereof, and a preparation method therefor. The edge-grafting-modified graphene comprises graphene and a water-soluble high-molecular polymer grafted on the edge of the graphene. On the basis of the total mass of the edge-grafting-modified graphene, the mass content of the water-soluble high-molecular polymer grafted in the edge-grafting-modified graphene is 1-30%. Compared with milling techniques such as ultrasound milling, ball milling and sand milling, milling discs have a weak damage effect on the crystal structure of graphite and therefore can easily prepare large lamellar graphene. Additionally, the water-soluble high-molecular polymer can improve the viscosity of a solution and thus indirectly transfers a shearing force between milling discs to graphite flakes, thereby further lowering the damage to crystal lattices of graphite and improving the exfoliation effect of graphite flakes. In addition, the water-soluble high-molecular polymer can be grafted to graphene and has a stabilization effect, thereby forming a stable aqueous dispersion of the edge-grafting-modified graphene."
The patent application was internationally filed on Oct. 24, 2023, under International application No.PCT/CN2023/126215.
Disclaimer: Curated by HT Syndication.
