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    • 1. 发明申请
    • OXIDATIVE CARBONYLATION OF PRIMARY AMINES TO ISOCYCANATES CATALYZED BY GROUP X DIVALENT NOBLE METAL COMPOUNDS OR COMPLEXES
    • 主要氨基氧化成由X族金属化合物或复合物催化的异氰酸酯的氧化羰基化
    • US20150353481A1
    • 2015-12-10
    • US14732047
    • 2015-06-05
    • Jean-Jacques KatzAnny Jutand
    • Jean-Jacques KatzAnny Jutand
    • C07C263/00
    • C07C263/00C07C2601/14C07C265/12C07C265/14
    • Processes for the preparation of monoisocyanates, diisocyanates or polyisocyanates of the present invention are described which comprises reacting monomeric or oligomeric primary amines or diamines, and carbon monoxide at atmospheric pressure in the presence of a catalytic amount of a compound or a complex of a divalent metal selected from palladium, nickel and platinum, and in the presence of stoichiometric or catalytic quantities of benzoquinone as an oxidant. Isocyanates are produced in high yields and purities. They can be isolated as free isocyanates or as blocked isocyanates by in situ reaction with blocking agents that contain an active hydrogen being attached to oxygen, sulfur or nitrogen. Monoisocyanates and diisocyanates serve as chemical, agricultural or pharmaceutical intermediates. Diisocyanates and polyisocyanates are used to produce polyurethanes, polyureas, polyisocyanurates and related polymers.
    • 描述了制备本发明的单异氰酸酯,二异氰酸酯或多异氰酸酯的方法,其包括在大气压下,在催化量的化合物或二价金属络合物的存在下使单体或低聚伯胺或二胺与一氧化碳反应 选自钯,镍和铂,并且在化学计量或催化量的苯醌作为氧化剂的存在下。 异氰酸酯以高产率和纯度生产。 它们可以作为游离异氰酸酯或作为封闭的异氰酸酯被分离,通过与包含与氧,硫或氮连接的活性氢的封闭剂进行原位反应。 单异氰酸酯和二异氰酸酯用作化学,农业或医药中间体。 二异氰酸酯和多异氰酸酯用于生产聚氨酯,聚脲,聚异氰脲酸酯和相关聚合物。