| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method of a polymerizable composition for optical material in which when producing the polymerizable composition for optical material using sulfur, a compound having intramolecular episulfide group, and a compound having an intramolecular SH group, a side reaction in a preliminary polymerization reaction and viscosity increase due to excessive reaction progress can be suppressed, and productivity is favorable without generating striae.SOLUTION: A preliminary reaction temperature is made near to a room temperature that is near to a polymerization initiation temperature, in a production method of a polymerizable composition for optical material from a mixture including inorganic compound having a sulfur atom, a compound having an episulfide group, and an SH group inclusion organic compound having two intermolecular SH groups. |
