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    • 66. 发明公开
    • VERFAHREN ZUR KOPPELPRODUKTION VON DI- UND/ODER POLYISOCYANATEN UND GLYKOLEN
    • 葡萄柚ON EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN
    • EP2493850A1
    • 2012-09-05
    • EP10778596.6
    • 2010-10-27
    • BASF SE
    • BOCK, MichaelBAUMANN, RobertFRANZKE, AxelSTROEFER, EckhardTHEIS, Gerhard
    • C07C263/04C07C29/12C07C29/128C07C31/20C07C265/12C07C265/14
    • C07C263/04C07C29/12C07C29/128C07C68/065C07C2601/14C07C69/96C07C265/12C07C265/14C07C31/202
    • A process for coproducing di- and/or polyisocyanates and glycols, comprising process stages A, B, C and E for preparing glycols and process stages A, C, D, E, F and G for preparing di- and/or polyisocyanates, which comprises accomplishing the material coupling via the separation of the reaction mixture obtained in process stage A into process stages B and C, by in process stage A, reacting an aqueous alkylene oxide with carbon dioxide to give a reaction mixture comprising alkylene carbonate, hydrolyzing a portion of the alkylene carbonate-comprising reaction mixture obtained in process stage A to glycol in process stage B, dewatering the remaining alkylene carbonate-comprising stream of the reaction mixture from process stage A in process stage C, in process stage D, synthesizing amine by hydrogenating an aromatic nitro compound or a nitrile, in process stage E, transesterifying the dewatered alkylene carbonate-comprising mixture from process stage C with a monohydroxy alcohol to give the corresponding dialkyl carbonate, obtaining glycol as a coproduct, in process stage F, reacting the dialkyl carbonate-comprising reaction mixture obtained in process stage E with the amine obtained in process stage D to a mixture comprising the corresponding mono-, di- and/or polycarbamate, which in process stage G is cleaved to obtain the corresponding di- and/or polyisocyanate.
    • 一种用于共混生产二 - 和/或多异氰酸酯和二醇的方法,包括制备二元醇和工艺阶段A,C,D,E,F和G以制备二 - 和/或多异氰酸酯的工艺阶段A,B,C和E, 包括通过在工艺阶段A中通过将在工艺阶段A中获得的反应混合物分离成工艺阶段B和C来实现材料偶合,使环氧烷水溶液与二氧化碳反应,得到包含碳酸亚烷基酯的反应混合物,水解部分 在工艺阶段B中获得的含碳酸亚烷基酯的反应混合物在工艺阶段B中与二醇在工艺阶段D中在工艺阶段D中将来自反应混合物的剩余的含有碳酸亚烷烃的料流从工艺级A脱水,通过氢化合成胺 芳香族硝基化合物或腈,在工艺阶段E中,将来自工艺阶段C的脱水的含碳酸亚烷基酯混合物与一羟基醇进行酯交换,得到 将相应的碳酸二烷基酯作为副产物获得,在工艺阶段F中,使在工艺阶段E中获得的含碳酸二烷基酯的反应混合物与在工艺阶段D中获得的胺反应到包含相应的单 - ,二 - 和/ 或聚氨酯,其在工艺阶段G被切割以获得相应的二 - 和/或多异氰酸酯。