公开(公告)号：US20210070790A1

公开(公告)日：2021-03-11

申请号：US16980466

申请日：2019-03-14

Applicant: TOKUYAMA CORPORATION

Inventor： Takayoshi KAWASAKI ,  Junji MOMODA ,  Tomohiro KAWAMURA ,  Mayumi KISHI ,  Michihito NAKATANI

IPC: C07F9/94 ,  C08F220/06 ,  C08F212/08

Abstract: A bismuth compound which is little toxic, insoluble in a monomer, usable for optical purpose and used as a substitute for a lead compound, in which a phosphoric acid ester having a (meth)acrylic group(s) is bonded to bismuth, and a method of producing the bismuth compound by reacting bismuth (meth)acrylate or bismuth subsalicylate with a phosphoric acid ester having a (meth)acrylic group(s) and carrying out dehydration.