公开(公告)号：EP3133098A4

公开(公告)日：2017-12-27

申请号：EP15779966

申请日：2015-04-10

申请人： MITSUBISHI GAS CHEMICAL CO

发明人： TAKEMURA KOUHEI ,  KONISHI TETSUYA ,  AOKI TAKASHI ,  HORIKOSHI HIROSHI

IPC分类号： C08G18/52 ,  C08G18/16 ,  C08G18/38 ,  C08G18/75 ,  C08G75/08 ,  C08G75/14 ,  G02B1/04

CPC分类号： C08G18/3874 ,  C07D331/02 ,  C08G18/168 ,  C08G18/3876 ,  C08G18/755 ,  C08G75/08 ,  C08G75/14 ,  G02B1/041

摘要： According to the present invention, a composition for an optical material can be provided, which is characterized by containing an episulfide compound having a value of turbidity in acetone of 3.0 ppm or less. According to a preferred embodiment of the present invention, a composition for an optical material can be provided, which comprises: (a) a compound (an episulfide compound) which has a structure represented by formula (1) and has a value of turbidity in acetone of 3.0 ppm or less; (b) a polyisocyanate compound; and (c) a polythiol compound. (In the formula, m represents an integer of 0 to 4; and n represents an integer of 0 or 1.)