ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,416, issued on Dec. 16, was assigned to Anhui Chichem Corp. (Anqing, China).

"Acylphosphine oxide compounds and preparation methods thereof" was invented by Xiaofeng Zhong (Anhui, China), Jin Wu (Anhui, China), Xiangjun Yue (Anhui, China) and Tienan Huang (Anhui, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are an acylphosphine oxide compound and a preparation method therefor, which belong to the field of initiators. The method comprises: reacting compound B and compound C under the conditions of an organic base and an organic solvent so as to obtain the acylphosphine oxide compound. The chemical structural formula of compound B is...