Polycarbonate (PC) is a material with excellent mechanical properties and transparency, and is widely used in the electronics, optics and automotive industries. Among them, PCs used for automobile interior materials require high mechanical properties for the safety of passengers, and as the design trend of automotive interior materials changes from simple line lighting to cotton lighting, high transparency must be secured. Due to this need, the need for Siloxan-PC (Si-PC) having various properties is increasing. Si-PC secures impact resistance up to -60℃ and has excellent transparency, flame retardancy, and chemical resistance.