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二苯基甲烷二异氰酸酯的结构鉴定

Release time:2023-10-19  Hits:

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  • Abstract:<正>多异氰酸酯是合成聚氨酯的主要原料,二苯基甲烷二异氰酸酯(MDI(Ⅰ))的消耗量在聚氨酯弹性体中仅次于甲苯二异氰酸酯,工业MDI以苯胺为原料,与甲醛缩合后再与光气反应制成,因而产物是一个混合物,除二环MDI外,还有三环.四环.五环等结
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