| 摘要 |
<p>The present invention relates to a method for producing 3-mercaptopropionic acid and carbonic acid ester composition having mercapto group using same, and a method for producing thiourethane-based optical materials. The method for producing 3-mercaptopropionic acid according to the present invention does not include a post-processing treatment, which is necessitated by generation of a dimer such as thiodipropionitrile, thereby the process is simple and economical, and exhibits superior yield rate. Additionally, the carbonic acid ester composition produced with 3-mercaptopropionic acid produced using the method exhibit superior purity and coloring, and allows production at a low cost, and thus has the benefit of being usable as an inexpensive resin composition for urethane-based optical materials, and ptical materials thus produced exhibit excellent coloring. Thiourethane-based optical lenses having good coloring, obtained by means of the present invention, can replace existing lenses and be widely used in diverse fields.</p> |
