| 摘要 |
PURPOSE: A polysiloxane polymer and a polymer composition comprising the same are provided to maintain heat resistance, UV-resistance or transparency in a high refractive index, and high mechanical property such as strength. CONSTITUTION: A polysiloxane for sealing materials or lens of a light-emitting diode comprise a repeating unit of chemical formula 1. In chemical formula 1, R^1 and R^2 are independently H, methyl, ethyl, phenyl or C2~C6 alkenyl; X1 and Y1 are independently C0~C6 alkylene, C2~C6 alkenylene, C2~C6 alkynylene, NH or O; and m is 1 or more. |
