ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,189, issued on June 17, was assigned to SABIC GLOBAL TECHNOLOGIES B.V. (Bergen op Zoom, Netherlands).
"Flame retardant composition comprising a polysiloxane" was invented by Yuqi Li (Blue Bell, Pa.), Jinfeng Zhuge (Downingtown, Pa.) and Xin Chen (Malvern, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In an embodiment, a flame retardant composition comprises 60 to 95 wt % of a polycarbonate: a poly siloxane comprising a repeat unit of the formula (7): wherein the composition comprises 0.5 to 2 wt % of the repeat unit of the formula (7) of the polysiloxane: wherein the polysiloxane is free of one or both of a vinyl graft and repeat units derived ...