US Patent Issued to SHPP GLOBAL TECHNOLOGIES on Oct. 21 for "Method for purification of a bisphenol a dianhydride composition, bisphenol a dianhydride composition, poly(etherimide) derived from the bisphenol a dianhydride composition, and articles prepared therefrom" (Indiana Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,361, issued on Oct. 21, was assigned to SHPP GLOBAL TECHNOLOGIES B.V. (Bergen op Zoom, Netherlands).

"Method for purification of a bisphenol a dianhydride composition, bisphenol a dianhydride composition, poly(etherimide) derived from the bisphenol a dianhydride composition, and articles prepared therefrom" was invented by James Patrick Schulte II (Mt. Vernon, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for the purification of a bisphenol A dianhydride composition includes contacting the bisphenol A dianhydride composition with a halogenated solvent to form a solution, and one or more of filtering the solution to remove ionic specie...