| abstract |
The present invention relates to a method for manufacturing a thiourethane-based optical material, and specifically to a method for manufacturing a high-quality optical material having high yield without developing striae, white turbidity, and fine bubbles, and is colorless, transparent, and changeless. Provided is a method for manufacturing the thiourethane-based optical material in which a polymerization composition, comprising a polythiol compound and a polyisocyanate compound, is in-mold polymerized, and is characterized in that polymerization composition is processed under a specific vacuum condition before being injected into a mold for in-mold polymerization. The thiourethane-based optical material manufactured according to the present invention can replace existing optical materials and be widely used in a variety of industries. |