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    Preparation process of N-substituted maleimides
    1.
    发明公开
    Preparation process of N-substituted maleimides 失效
    N-取代的马来酰亚胺 - Herstellungsverfahren。

    公开(公告)号：EP0372922A2

    公开(公告)日：1990-06-13

    申请号：EP89312703.5

    申请日：1989-12-06

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Tsumura, Ryuichiro ,  Fukumura, Kunimitsu ,  Muraishi, Teruo

    IPC分类号： C07D207/444

    CPC分类号： C07D207/448 ,  C07D207/452

    摘要： A process for the preparation of N-substituted maleimides by conducting heat-dehydration and dehydrating imidization of N-substituted maleamic acids under azeotropic distillation of generated water in a solvent mixture containing a solvent capable of forming water azeotrope and an organic aprotic polar solvent, in the presence as catalyst of a zinc salt of a maleamic acid, metallic zinc or a zinc compound which forms a zinc salt of the N-substituted maleamic acid in the reaction system.

    摘要翻译： 在含有能够形成水共沸物和有机非质子极性溶剂的溶剂的溶剂混合物中，在产生的水的共沸蒸馏下进行N-取代的马来酰胺酸的热脱水和脱水酰亚胺化，制备N-取代的马来酰亚胺的方法， 作为反应体系中形成N-取代马来酰胺酸锌盐的马来酰胺酸锌金属，金属锌或锌化合物的催化剂的存在。

    Preparation process of N-substituted maleimides
    3.
    发明公开
    Preparation process of N-substituted maleimides 失效
    N-取代的马来酰亚胺的制备方法

    公开(公告)号：EP0372922A3

    公开(公告)日：1990-11-14

    申请号：EP89312703.5

    申请日：1989-12-06

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Tsumura, Ryuichiro ,  Fukumura, Kunimitsu ,  Muraishi, Teruo

    IPC分类号： C07D207/444

    CPC分类号： C07D207/448 ,  C07D207/452

    摘要： A process for the preparation of N-substituted maleimides by conducting heat-dehydration and dehydrating imidization of N-substituted maleamic acids under azeotropic distillation of generated water in a solvent mixture containing a solvent capable of forming water azeotrope and an organic aprotic polar solvent, in the presence as catalyst of a zinc salt of a maleamic acid, metallic zinc or a zinc compound which forms a zinc salt of the N-substituted maleamic acid in the reaction system.

    Preparation process of N-substituted maleimides
    4.
    发明公开
    Preparation process of N-substituted maleimides 失效
    Verfahren zur Herstellung von N-substitutionierten Maleinimiden。

    公开(公告)号：EP0403240A1

    公开(公告)日：1990-12-19

    申请号：EP90306417.8

    申请日：1990-06-13

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Tsumura, Ryuichiro ,  Ikeda, Keiichi ,  Muraishi, Teruo ,  Wang, Jin-Kai

    IPC分类号： C07D207/444 ,  C07D207/448 ,  C07D207/452

    CPC分类号： C07D207/448

    摘要： A process for the preparation of N-substituted maleimides by conducting heat-dehydration and dehydrating imidization of N-substituted maleamic acids under azeotropic distillation of generated water in a solvent mixture containing a solvent capable of forming water azeotrope and an organic aprotic polar solvent, in the presence as catalyst of metallic tin, tin oxide, a tin salt of a maleamic acid or a tin compound which forms a tin salt of the N-­substituted maleamic acid in the reaction system.
    E.G. N-phenylmaleamic acid (produced in situ from aniline and maleic anyhydride) in xylene and dimethylformamide is converted to N-phenylmaleimide using as a catalyst stannous oxide (0.025 mole per mole of maleic anhydride).

    摘要翻译： 在含有能够形成水共沸物和有机非质子极性溶剂的溶剂的溶剂混合物中，在产生的水的共沸蒸馏下进行N-取代的马来酰胺酸的热脱水和脱水酰亚胺化，制备N-取代的马来酰亚胺的方法， 在反应体系中形成金属锡，氧化锡，马来酰胺酸的锡盐，形成N-取代的马来酰胺酸的锡盐的锡化合物的催化剂的存在。 例如。 使用氧化亚锡（0.025摩尔/摩尔马来酸酐）将N-苯基马来酸（在苯胺和马来酸酐中原位产生）在二甲苯和二甲基甲酰胺中转化为N-苯基马来酰亚胺。

    Process for the preparation of polymethylene polypheny polyisocyanate compositions and use thereof
    5.
    发明公开
    Process for the preparation of polymethylene polypheny polyisocyanate compositions and use thereof 失效
    一种用于聚亚甲基聚苯异氰酸酯和它们的用途的组合物的制备过程。

    公开(公告)号：EP0030039A1

    公开(公告)日：1981-06-10

    申请号：EP80107578.9

    申请日：1980-12-04

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Takeuchi, Kouichi ,  Hasegawa, Seiji ,  Aoki, Shinobu ,  Miyata, Katsuharu ,  Iwasaki, Masao ,  Muraishi, Teruo

    IPC分类号： C07C125/06 ,  C08G18/80

    CPC分类号： C08G18/8064

    摘要： A polymethylene polyphenyl polyisocyanate composition comprising polymethylene polyphenyl polyisocyanates, a part of the isocyanate groups contained therein being substituted by a carbamate group, or said polymethylene polyphenyl polyisocyanates having the substituted carbamate group and polymethylene polyphenyl polyisocyanate not having carbamate group, the total amount of the isocyanate groups contained in the composition being up to 10% by mole based on the total amount of isocyanate groups contained in the composition. The composition is useful for the preparation of rigid polyurethane which has many industrial applications. A process for the preparation of the composition is also disclosed.

    摘要翻译： 甲聚亚甲基聚苯异氰酸酯组合物，包括聚亚甲基聚苯异氰酸酯，异氰酸酯基的一部分通过氨基甲酸酯基包含在其中是substituiertem，或所述具有substituiertem氨基甲酸酯基和聚亚甲基聚苯异氰酸酯聚亚甲基聚苯异氰酸酯不具有氨基甲酸酯基，异氰酸酯的合计量 包含在基于包含在该组合物的异氰酸酯基团的总量的组合物至多为10摩尔％基团。 该组合物是用于制备硬质聚氨酯的其中有许多工业应用是有用的。 一种用于该组合物的制备方法，因此游离缺失盘。