US Patent Issued to Covestro Intellectual Property on July 14 for "Process for producing polycarbonate-point of addition of the chain terminator" (German, Belgian Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,930, issued on July 14, was assigned to Covestro Intellectual Property GmbH & Co. KG (Leverkusen, Germany).

"Process for producing polycarbonate-point of addition of the chain terminator" was invented by Rolf Bachmann (Bergisch Gladbach, Germany), Antonio Ortiz (Duisburg, Germany), Josef Bartholomei (Bruggen, Germany), Marten Voelker (Neuss, Germany) and Jan Heijl (Lokeren, Belgium).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a process for producing polycarbonate according to a phase boundary process, from at least one dihydroxydiaryl alkane, phosgene, at least one catalyst and at least one chain terminator, the pr...