US Patent Issued to GHARDA CHEMICALS on May 12 for "Polyether ketone ketone and a process for preparation thereof" (Indian Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,165, issued on May 12, was assigned to GHARDA CHEMICALS Ltd. (Maharashtra, India).

"Polyether ketone ketone and a process for preparation thereof" was invented by Prakash D. Trivedi (Maharashtra, India), Pragnesh D. Damania (Maharashtra, India) and Atul R. Raja (Maharashtra, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "A polyether ketone ketone (PEKK) has a terephthaloyl:isophthaloyl (T:I) ratio of 100:0. A process for preparing the PEKK is also provided. The process includes polymerizing 1,4-bis (4-phenoxybenzoyl) benzene (EKKE) with terephthaloyl chloride (TPC), and an end capping agent in a fluid medium, to obtain a product mixture includi...