As one component of two-pack waterborne polyurethane coating,polyisocyanate contains unmodified isocyanate and hydrophilically modefied polyisocyanate.

• 双组分水性聚氨酯涂料由聚合物多元醇和多异氰酸酯组成,而多异氰酸酯可分为疏水性和亲水性两类。