US Patent Issued to LANXESS on July 22 for "Method of selectively preparing phosphorus containing flame retardants and their use in thermoplastics" (Connecticut Inventors)

ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,703, issued on July 22, was assigned to LANXESS Corp. (Pittsburgh).

"Method of selectively preparing phosphorus containing flame retardants and their use in thermoplastics" was invented by Simon J. Bonyhady (Waterbury, Conn.), Julia Yue Lee (Naugatuck, Conn.), Qingliang He (Cheshire, Conn.) and Ramesh Sharma (Cheshire, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A phosphorus-containing flame retardant is produced by reacting at a reaction temperature a mixture including a metal or suitable metal compound and a stoichiometric excess relative to the metal or suitable metal compound of an unsubstituted or alkyl or aryl substituted phosphonic o...