一种深棕色、低粘度、高反应性、总异氰酸酯含量约为 31%、平均官能度为 2.7 的聚亚甲基聚芳基异氰酸酯。它是一种用途广泛的通用聚合 MDI，其粘度、反应性和分子量分布非常适合各种应用。该产品是为了生产具有优异流动性和机械性能的硬质泡沫而开发的。典型应用包括生产冷藏柜、深度冷冻板、夹层板和喷涂泡沫。它也非常适合用于生产聚异氰脲酸酯和聚氨酯连续层压制品，以及半硬质泡沫塑料模塑品（缓冲垫），并广泛用于生产冷固化高弹性软质泡沫塑料模塑品和板材。
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