| abstract |
The examples relate to siloxane (meth) acrylate oligomers for optical materials, wherein the siloxane (meth) acrylate oligomers according to the embodiments contain Si-O- linkages, which are the basic chemical structure of the glass, within the thiol structure, The advantages such as high transparency, Abbe's number and heat resistance which are advantages of the glass lens can be improved while maintaining the merits. Since the siloxane (meth) acrylate oligomer contains a metal component in a copolymerized state, it not only has an excellent refractive index but also is able to secure light resistance without using an ultraviolet absorber because the UV region is automatically blocked. Therefore, And can be usefully used for manufacturing various plastic lenses such as lenses. |