公开(公告)号：US20200181075A1

公开(公告)日：2020-06-11

申请号：US16641273

申请日：2019-03-29

Applicant: HOYA LENS THAILAND LTD. ,  KAGEYAMA Yukio

Inventor： Yukio KAGEYAMA

IPC: C07C319/22 ,  C08G18/38

Abstract: A method for producing a polythiol compound, the method including reacting a halide represented by Formula (1) with an alkali metal compound selected from the group made of an alkali metal sulfide and an alkali metal hydroxide to obtain a polyol compound selected from the group made of a polyol compound represented by Formula (2) and a polyol compound represented by Formula (3), in which a content of iron in the alkali metal compound is 100 ppm or less on a mass basis. in Formula (1), X represents a halogen atom.