US Patent Issued to Covestro Deutschland on June 23 for "Process for preparing bisphenol a (BPA) in the presence of at least two impurities" (Belgian Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,442, issued on June 23, was assigned to Covestro Deutschland AG (Leverkusen, Germany).

"Process for preparing bisphenol a (BPA) in the presence of at least two impurities" was invented by Jerico Jayson Uy (Antwerp, Belgium) and Erik Sluyts (Brasschaat, Belgium).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a process for preparing bisphenol A in the presence of at least two impurities being selected from the group consisting of 2-methylbenzofurane, hydroxyacetone, alpha-methylstyrene, acetophenone, benzene and/or cumene without poisoning the catalyst system comprising an ion exchange resin catalyst and a sulfur contai...