The polymerization catalyst for a polythiourethane-based optical material of the present invention includes a sulfonate represented by the following general formula (1). Furthermore, in the formula, R1, R2, R3 and R4 each independently represent an alkyl group having 1 to 18 carbon atoms, R1, R2, R3 and R4 may be bonded to each other to form a ring. R5 represents a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, and X represents a nitrogen atom or a phosphorus atom.
本发明聚
硫乙烷基光学材料的聚合催化剂包括由以下通式(1)表示的
磺酸盐。此外,在该式中,R1、R2、R3 和 R4 各自独立地代表具有 1 至 18 个碳原子的烷基,R1、R2、R3 和 R4 可相互键合形成环。R5 代表氢原子或具有 1 至 18 个碳原子的烷基,X 代表氮原子或
磷原子。