ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,852, issued on June 9, was assigned to Covestro Deutschland AG (Leverkusen, Germany).
"Hydrolysis-resistant polycarbonate composition" was invented by Leith Wang (Shanghai) and George Wang (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a polycarbonate composition including the following components: A) 80-97.5 parts by weight of aromatic polycarbonate; B) 0.1-0.3 part by weight of metal organic sulfonate; C) 0.3-0.7 parts by weight of anti-dripping agent; D) 0.1-4 parts by weight of hydrolysis stabilizer; and E) 2-7 parts by weight of polysilsesquioxane. The total amount of the composition is 100 parts by wei...