US Patent Issued to SHANDONG NORMAL UNIVERSITY on Aug. 5 for "Self-sensitizing negative polyimide precursor and method for preparing the same, and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,361, issued on Aug. 5, was assigned to SHANDONG NORMAL UNIVERSITY (Jinan, China).

"Self-sensitizing negative polyimide precursor and method for preparing the same, and use thereof" was invented by Peng Yang (Jinan, China), Haiping Yu (Jinan, China), Yuting Zhu (Jinan, China) and Xu Wang (Jinan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A self-sensitizing negative polyimide precursor and a method for preparing the same, and use thereof. 4,4'-dinitro-1,1'-biphenyl-2,2'-dicarboxylic acid is used as a starting material and undergoes an acylation reaction with thionyl chloride to afford compound 1. Compound 1 subsequently undergoes an esterific...