The diisocyanates used have included toluene diisocyanate.
所用的二异氰酸酯包括甲苯二异氰酸酯。
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Novel diisocyanates for PU coatings, development trend of urethane prepolymer for coatings are described in this article. The applications of PU coatings in various industries are also presented.
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.