Porous cross-linked polyimide networks

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United States of America Patent

PATENT NO 9109088
APP PUB NO 20150141544A1
SERIAL NO

13756855

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Abstract

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Porous cross-linked polyimide networks are provided. The networks comprise an anhydride end-capped polyamic acid oligomer. The oligomer (i) comprises a repeating unit of a dianhydride and a diamine and terminal anhydride groups, (ii) has an average degree of polymerization of 10 to 50, (iii) has been cross-linked via a cross-linking agent, comprising three or more amine groups, at a balanced stoichiometry of the amine groups to the terminal anhydride groups, and (iv) has been chemically imidized to yield the porous cross-linked polyimide network. Also provided are porous cross-linked polyimide aerogels comprising a cross-linked and imidized anhydride end-capped polyamic acid oligomer, wherein the oligomer comprises a repeating unit of a dianhydride and a diamine, and the aerogel has a density of 0.10 to 0.333 g/cm3 and a Young's modulus of 1.7 to 102 MPa. Also provided are thin films comprising aerogels, and methods of making porous cross-linked polyimide networks.

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Patent Owner(s)

  • OHIO AEROSPACE INSTITUTE;US GOVERNMENT ADMINISTRATOR OF NASA;UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guo, Haiquan Avon, US 7 122
Meador, Mary Ann B Strongsville, US 30 304

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