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:
May. 07, 2024
Filed:
Apr. 12, 2023
Government of the United States, As Represented BY the Secretary of the Air Force, Wright-Patterson AFB, OH (US);
Loon-Seng Tan, Centerville, OH (US);
Zhenning Yu, Beavercreek, OH (US);
Bingqian Zheng, Miamisburg, OH (US);
Hilmar Koerner, Beavercreek, OH (US);
United States of America as represented by the Secretary of the Air Force, Wright-Patterson AFB, OH (US);
Abstract
A family of low-molecular-weight, main-chain thermotropic liquid-crystalline co-polyimides (TLC-CoPI) that are crosslinkable, and based on a unique, liquid-crystallinity (LC)-enabling diamine, namely, 1,3-bis[4-(4′-aminophenoxy)cumyl]benzene (BACB) and two or more mesogenic dianhydrides, at least one of which is a diphthalic dianhydride (DPA) that contains one or more thermally reactive and crosslinkable moieties similar to that of phenylethynyl (PE) is disclosed. Processes of making and using such low-molecular-weight, main-chain thermotropic liquid-crystalline co-polyimides are also provided.