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US5610408A Process for preparing liquid diphenylmethane diisocyanate 失效
制备液体二苯基甲烷二异氰酸酯的方法

Process for preparing liquid diphenylmethane diisocyanate
摘要:
A process for preparing a liquid MDI, which comprises adding, to MDI, a phospholine catalyst and a phosphorous acid ester of a specified formula and conducting a carbodiimidization reaction.
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