US Patent Issued to Institute of Chemistry Chinese Academy of Sciences on Sept. 16 for "Polyimide film preparation method and application thereof" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,892, issued on Sept. 16, was assigned to Institute of Chemistry Chinese Academy of Sciences (Beijing).

"Polyimide film preparation method and application thereof" was invented by Shiyong Yang (Beijing), Jianjun He (Beijing), Haixia Yang (Beijing) and Zhiyuan Wang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a polyimide film, preparation method, and application thereof. The polyimide film is a colorless transparent film with low thermal expansion. The polyimide film is obtained by taking a mixture of rigid aromatic diamine and fluorine-containing aromatic diamine, a mixture of rigid aromatic tetracarboxylic dianhydride and fl...