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:
Dec. 02, 2025
Filed:
Mar. 04, 2022
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (US);
Guoliang Liu, Blacksburg, VA (US);
Zhen Xu, Blacksburg, VA (US);
Alan Roger Esker, Blacksburg, VA (US);
Gehui Liu, Blacksburg, VA (US);
VIRGINIA TECH INTELLECTUAL PROPERTIES, INC., Blacksburg, VA (US);
Abstract
In one aspect, the disclosure relates to azide-containing poly(ether imide) polymers (PEIs; N-PEI-N) synthesized via a heterogenous diazotizationazidation reaction. In one aspect, the azide-containing PEIs can be solution-cast into films and then thermally crosslinked. In a further aspect, the crosslinked PEIs (X-PEIs) exhibit superior thermal and mechanical properties. In a still further aspect, X-PEIs display outstanding resistance to classical solvents for conventional PEI, including THF, DCM, chloroform, DMF, and NMP. In another aspect, with an initial number average molecular weight (M) of 8.9 kDa, the disclosed azide-containing PEIs have a high crosslinking density and thus possess desirable thermal, mechanical, and solvent resistance properties.