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:
Jul. 12, 2022
Filed:
Dec. 28, 2018
Huazhong University of Science and Technology, Hubei, CN;
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei, CN;
Abstract
The present invention relates to the technical field of new materials, and provides a dianhydride compound having a rigid alicyclic fluorine-containing structure, and a preparation method and use thereof. The preparation method includes a first step of subjecting 2,3,6,7-tetramethylanthracene-9,10-dione to a nucleophilic addition reaction, to obtain ((2,3,6,7-tetramethyl-9,10-bis(trifluoromethyl)-9,10-dihydroanthracene-9,10-diyl)bis(oxy))bis(trimethylsilicane); a second step of converting the trimethylsiloxane on the product obtained in the first step into a hydroxyl group; and a third step of replacing the hydroxyl group on the product obtained in the second step by F, Cl, CFor a phenyl ring, and then oxidizing and dehydrating into an anhydride to obtain a dianhydride compound.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile