On the other hand, the materials based on aliphatic diisocyanates are famous for their unchanged whiteness and they will not change to yellow when irradiated with ultraviolet, visible light or heated.

• 另一方面，基于脂肪族二异氰酸酯的材料以其独有的白色而著称，且其在紫外光、可见光和热条件下都不会变黄。