US Patent Issued to Celanese Polymers Holding on Sept. 1 for "Copolyetherester" (Swiss Inventor)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,153, issued on Sept. 1, was assigned to Celanese Polymers Holding Inc. (Wilmington, Del.).

"Copolyetherester" was invented by Eleni Karayianni (Geneva).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a copolyetherester compositions that are resistant to burning and which show reduced smoke production when exposed to heat or flame. The compositions include a polymer, aluminum diethylphosphinate and a zinc salt of phosphorus acid. Optionally, the composition can include an aluminum salt of phosphorus acid."

The patent was filed on June 15, 2021, under Application No. 17/996,481.

*For further information, including images, charts...