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    Process for the preparation of durene diisocyanate
    1.
    发明授权
    Process for the preparation of durene diisocyanate 失效
    杜烯二异氰酸酯的制备方法

    公开(公告)号：US06486346B1

    公开(公告)日：2002-11-26

    申请号：US09460953

    申请日：1999-12-14

    申请人： Peter Heitkämper ,  Klaus Jost ,  Stefan Penninger

    发明人： Peter Heitkämper ,  Klaus Jost ,  Stefan Penninger

    IPC分类号： C07C27300

    CPC分类号： C07C263/10 ,  C07C265/14

    摘要： Durene diisocyanate is prepared by reacting durene with nitric acid in sulfuric acid, catalytic hydrogenation of the dinitrodurene that is formed, and phosgenation of the resultant durene diamine in a conventional manner. The intermediate products dinitrodurene and durene diamine do not have to be worked up in a complicated manner as solid products, but can be worked up in dissolved form. The intermediate products dinitrodurene and durene diamine do not have to be isolated and purified in a complicated manner. but can be processed directly after preparation. Another advantage of this process is that only a single organic solvent need be used for the overall preparation process. Separation and re-use of spent acid in the conversion of durene with nitric acid also renders the process of the present invention significantly less environmentally harmful than the known processes of the prior art.

    摘要翻译： 杜烯二异氰酸酯是通过使杜烯与硝酸在硫酸中反应制得的，所形成的二硝基还原剂的催化氢化和所得的杜烯二胺以常规方式进行光气化。 中间产物二硝基呋喃和杜烯二胺不需要以固体产物的复杂方式处理，而可以以溶解的形式进行处理。 中间产物二硝基杜烯和杜烯二胺不需要以复杂的方式分离和纯化。 但可以在准备后直接加工。 该方法的另一个优点是在整个制备过程中仅需要使用单一的有机溶剂。 在杜烯与硝酸的转化中，废酸的分离和再利用也使得本发明的方法比现有技术的已知方法显着降低了对环境的危害。

    Diisocyanates and processes for their production and use
    3.
    发明授权
    Diisocyanates and processes for their production and use 失效
    二异氰酸酯及其生产和使用的方法

    公开(公告)号：US5552507A

    公开(公告)日：1996-09-03

    申请号：US434254

    申请日：1995-05-03

    申请人： Christian Wamprecht ,  Klaus Jost ,  Stefan Penninger

    发明人： Christian Wamprecht ,  Klaus Jost ,  Stefan Penninger

    IPC分类号： C07C263/10 ,  C07C265/14 ,  C08G18/77 ,  C08G18/78 ,  C08G18/79 ,  C07C69/34 ,  C07C265/02 ,  C07D251/34

    CPC分类号： C08G18/771 ,  C07C265/14

    摘要： Diisocyanates containing carboxylic acid ester groups corresponding to the formula: ##STR1## in which R and R.sup.1 represent specified groups are produced by phosgenation of the corresponding diamines, optionally present in the form of an ammonium salt. These diisocyanates are useful as starting materials in the production of plastics containing urethane and/or urea groups and as starting materials for the production of intermediate products used for the production of such plastics.

    摘要翻译： 对应于下式的对应于式（I）的羧酸酯基的二异氰酸酯：其中R和R 1代表特定基团是通过相应的二胺的光气化产生的，任选以铵盐的形式存在。 这些二异氰酸酯可用作生产含有氨基甲酸酯和/或脲基团的塑料的起始原料，并且用作生产用于生产这种塑料的中间产物的起始材料。

    Method For the Reduction of Chlorine-Containing Components in Organic Isocyanates
    4.
    发明申请
    Method For the Reduction of Chlorine-Containing Components in Organic Isocyanates 审中-公开
    减少有机异氰酸酯中含氯成分的方法

    公开(公告)号：US20080228006A1

    公开(公告)日：2008-09-18

    申请号：US11792806

    申请日：2005-12-10

    申请人： Andreas Job ,  Klaus Jost ,  Hans-Ulrich Dummersdorf

    发明人： Andreas Job ,  Klaus Jost ,  Hans-Ulrich Dummersdorf

    IPC分类号： C07C263/20

    CPC分类号： C07C263/20 ,  C07C265/04

    摘要： The invention relates to a method for largely eliminating chlorine compounds from organic isocyanates or isocyanate mixtures by contacting said isocyanates or isocyanate mixtures with a water-containing inert gas flow or an organic material having a cation-exchanging effect. The inventive method allows the isocyanates to be gently freed from chorine-containing compounds and is particularly suitable for temperature-sensitive isocyanates.

    摘要翻译： 本发明涉及通过使所述异氰酸酯或异氰酸酯混合物与含水惰性气体流或具有阳离子交换作用的有机材料接触来大大消除有机异氰酸酯或异氰酸酯混合物中氯化合物的方法。 本发明的方法允许异氰酸酯温和地除去含氯化合物，特别适用于温度敏感的异氰酸酯。

    Process for the preparation of isocyanates
    7.
    发明授权
    Process for the preparation of isocyanates 失效
    异氰酸酯的制备方法

    公开(公告)号：US5925783A

    公开(公告)日：1999-07-20

    申请号：US836294

    申请日：1997-05-12

    申请人： Klaus Jost ,  Gunter Hammen ,  Rudolf Sundermann

    发明人： Klaus Jost ,  Gunter Hammen ,  Rudolf Sundermann

    IPC分类号： C07C263/10 ,  C07C265/14 ,  C07C263/00

    CPC分类号： C07C263/10

    摘要： Isocyanates are prepared by a continuous process by reacting appropriate primary amines with phosgene in the presence of an isocyanate as solvent, the primary amine optionally dissolved in an inert organic solvent being reacted with phosgene, which is dissolved in the isocyanate, at temperatures of 60 to 150.degree. C. and at pressures of 1 to 30 bar (10.sup.5 to 3.10.sup.6 Pa) to obtain the corresponding isocyanate, wherein the molar ratio of phosgene to amine used is 4:1 to 1:1, and the isocyanate used as solvent is solids-free and has a value for hydrolysable chlorine of less than 2%.

    摘要翻译： PCT No.PCT / EP95 / 04354 Sec。 371日期：1997年5月12日 102（e）日期1997年5月12日PCT提交1995年11月6日PCT公布。 出版物WO96 / 1602800 日期1996年5月30日异氰酸酯通过连续方法通过在异氰酸酯作为溶剂的存在下使适当的伯胺与光气反应制备，伯胺任选地溶解在惰性有机溶剂中，与溶解在异氰酸酯中的光气反应， 温度为60〜150℃，压力为1〜30巴（105〜3.106Pa），得到相应的异氰酸酯，其中光气与胺的摩尔比为4:1〜1:1，异氰酸酯 因为溶剂是无固体的，并且具有小于2％的可水解氯的值。