公开(公告)号：US06833469B2

公开(公告)日：2004-12-21

申请号：US10480240

申请日：2003-12-10

申请人： Andreas Wölfert ,  Christian Müller ,  Eckhard Stroefer

发明人： Andreas Wölfert ,  Christian Müller ,  Eckhard Stroefer

IPC分类号： C07C26300

CPC分类号： C07C263/10 ,  C07C265/14

摘要： The invention relates to a process for the production of isocyanates by reaction of primary amines with phosgene, in which isocyanate is used as solvent, wherein some or all of isocyanate used as solvent is added to the reaction mixture only after the amine and phosgene have been physically combined.

摘要翻译： 本发明涉及通过使伯胺与光气反应生产异氰酸酯的方法，其中使用异氰酸酯作为溶剂，其中仅在胺和光气已经被加入到反应混合物中之后用作溶剂的一部分或全部异氰酸酯加入到反应混合物中 身体结合。

公开(公告)号：US06307096B1

公开(公告)日：2001-10-23

申请号：US09473097

申请日：1999-12-28

申请人： Alexa B. Sommer ,  Mary Ann Wittig ,  Edwin Ray Hortelano ,  Philip E. Yeske ,  Jane F. Ciebien

发明人： Alexa B. Sommer ,  Mary Ann Wittig ,  Edwin Ray Hortelano ,  Philip E. Yeske ,  Jane F. Ciebien

IPC分类号： C07C26300

CPC分类号： C07C263/10 ,  C07C263/20 ,  Y02P20/544 ,  C07C265/14

摘要： A method for making an aliphatic diisocyanate by (a) phosgenating an aliphatic diamine in the presence of an inert solvent or gas to form a crude reaction mixture; (b) distilling the crude reaction mixture to form an aliphatic diisocyanate production stream and an aliphatic diisocyanate waste stream; (c) introducing the aliphatic diisocyanate waste stream to a chamber and placing the waste stream under supercritical fluid conditions sufficient to dissolve an appreciable amount of the aliphatic diisocyanate component in the supercritical fluid; (d) separating the dissolved aliphatic diisocyanate component from the waste stream, wherein the remaining waste stream is a supercritically-purged aliphatic diisocyanate waste stream; (e) lowering the pressure sufficiently to precipitate the aliphatic diisocyanate component.

摘要翻译： （a）在惰性溶剂或气体存在下使脂族二胺光气化以形成粗反应混合物的方法制备脂族二异氰酸酯; （b）蒸馏粗反应混合物以形成脂族二异氰酸酯生产流和脂族二异氰酸酯废物流; （c）将脂族二异氰酸酯废物流引入室中，并将废物流置于超临界流体条件下，足以溶解超临界流体中明显量的脂族二异氰酸酯组分; （d）从废物流中分离溶解的脂族二异氰酸酯组分，其中剩余的废物流是超临界吹扫的脂族二异氰酸酯废物流; （e）充分降低压力以沉淀脂族二异氰酸酯组分。

公开(公告)号：US06803483B2

公开(公告)日：2004-10-12

申请号：US10457105

申请日：2003-06-09

申请人： Heinrich Lokum ,  Ove Nommensen ,  Hermann Dallmeyer ,  Wilhelm Hagen

发明人： Heinrich Lokum ,  Ove Nommensen ,  Hermann Dallmeyer ,  Wilhelm Hagen

IPC分类号： C07C26300

CPC分类号： C07C263/20 ,  C07C265/14

摘要： A process for the purification of toluenediisocyanate by fractionating a crude distillation feed containing toluenediisocyante, an organic solvent and less than 2% by weight of phosgene in a heat integrated system having an upstream distillation column, an interchanger and a downstream distillation column which are connected in series. The vapor which is recovered from the upstream distillation column is used to reboil the bottoms product of the downstream distillation column or the feed to the downstream distillation column in the interchanger. The crude distillation feed comprising less than 2% by weight of phosgene is fractionated into three product fractions P1-P3 and optionally a fourth fraction P4. P1 is a noncondensible gas stream enriched with phosgene and/or low-boilers. P2 is a solvent-enriched product. P3 is a high boiler enriched bottoms product comprising toluenediisocyanate, and P4 is a toluenediisocyanate enriched stream lean in highboilers and reaction residues.

摘要翻译： 一种通过在含有甲苯二异氰酸酯，有机溶剂和小于2重量％的光气的粗蒸馏进料在具有上游蒸馏塔，交换器和下游蒸馏塔的热集成系统中分级来净化甲苯二异氰酸酯的方法，所述上游蒸馏塔， 系列。 从上游蒸馏塔回收的蒸气用于将下游蒸馏塔的塔底产物或交换器中的下游蒸馏塔的进料再沸腾。 包含小于2重量％的光气的原油蒸馏进料分馏成三个产物馏分P1-P3和任选的第四馏分P4。 P1是富含光气和/或低锅炉的不可冷凝气流。 P2是富溶剂的产品。 P3是含有甲苯二异氰酸酯的高锅炉富集底部产物，P4是富含甲苯二异氰酸酯的富含高沸物和反应残余物的料流。

公开(公告)号：US06781010B1

公开(公告)日：2004-08-24

申请号：US09664105

申请日：2000-09-19

申请人： Robert W. Mason

发明人： Robert W. Mason

IPC分类号： C07C26300

CPC分类号： C07C263/04 ,  C07C263/00 ,  C07C269/00 ,  C07C265/12 ,  C07C265/14 ,  C07C271/58 ,  C07C271/52

摘要： A phosgene-free process for producing organic isocyanates reacts an organic fomamide with a diorganocarbonate and thermolyzing the reaction product to obtain the corresponding organic isocyanate. Byproducts may be cycled back to the reaction or recycled to produce additional starting materials. The process product organic isocyanates in high yield.

摘要翻译： 用于制备有机异氰酸酯的无光气的方法使有机磷酰胺与二有机碳酸酯反应并热解反应产物以获得相应的有机异氰酸酯。 副产物可以循环回到反应中或再循环以产生另外的起始材料。 该产品有机异氰酸酯高产率。

公开(公告)号：US06664415B2

公开(公告)日：2003-12-16

申请号：US09845873

申请日：2001-04-30

申请人： Martin Brahm ,  Lutz Schmalstieg ,  Ulrich Geron ,  Hans-Günter Behr ,  Jörg Morawski

发明人： Martin Brahm ,  Lutz Schmalstieg ,  Ulrich Geron ,  Hans-Günter Behr ,  Jörg Morawski

IPC分类号： C07C26300

CPC分类号： C07C263/16 ,  C07C265/04

摘要： The present invention relates to a process for preparing a low boiling monoisocyanate having a boiling point of between 70 and 320° C. at standard pressure by reacting A) a high boiling isocyanate compound having a boiling point of at least 180° C. at standard pressure and an HC content of at least 50 ppm with B) a monoamine having a primary amino group, at a maximum reaction temperature of 180° C. and a molar ratio of isocyanate groups to amino groups of at least 4:1 to form a compound containing a biuret/urea group, simultaneously thermally decomposing this compound in situ to form a monoisocyanate corresponding to monoamine B) and removing the monoisocyanate by distillation, optionally under vacuum.

摘要翻译： 本发明涉及一种在标准压力下制备沸点在70和320℃之间的低沸点单异氰酸酯的方法，该方法是使标准压力下的沸点为至少180℃的高沸点异氰酸酯化合物 并且具有至少50ppm的HC含量与B）具有伯氨基的单胺，最大反应温度为180℃，异氰酸酯基与氨基的摩尔比为至少4:1以形成含有 一个缩二脲/尿素基团，同时热分解该化合物原位形成对应于单胺B的单异氰酸酯），并任选地在真空下通过蒸馏除去单异氰酸酯。

公开(公告)号：US06225497B1

公开(公告)日：2001-05-01

申请号：US09225942

申请日：1999-01-06

申请人： Gernot Becker ,  Konrad Fischer ,  Andreas Flink ,  Erhard Herrmann ,  Lothar Weismantel ,  Georg Wiessmeier ,  Klaus Schubert ,  Maximillian Fichtner

发明人： Gernot Becker ,  Konrad Fischer ,  Andreas Flink ,  Erhard Herrmann ,  Lothar Weismantel ,  Georg Wiessmeier ,  Klaus Schubert ,  Maximillian Fichtner

IPC分类号： C07C26300

CPC分类号： B01F13/0066 ,  B01F5/0256 ,  B01F5/0644 ,  B01F13/0064 ,  B01F13/0093 ,  B01F13/0094 ,  B01F13/0096 ,  B01J19/0093 ,  B01J2219/00783 ,  B01J2219/00889 ,  C07C263/10 ,  C07C2601/14 ,  C07C265/10

摘要： A process for rapidly mixing phosgene and an amine in the gas phase to produce the corresponding isocyanate. Micro-structure mixers are used for the rapid mixing. The educts emerge from the micro-structure mixer in the form of thin free jets which mix very rapidly by diffusion and/or turbulence. As a result, the mixing operation is accelerated substantially as compared with conventional reactors. The isocyanate yield is also increased.

摘要翻译： 在气相中快速混合光气和胺以制备相应的异氰酸酯的方法。 微结构混合器用于快速混合。 离子从微结构混合器以薄的自由射流的形式出现，其通过扩散和/或湍流非常迅速地混合。 结果，与常规反应器相比，混合操作大大加速。 异氰酸酯产率也增加。

公开(公告)号：US06800781B2

公开(公告)日：2004-10-05

申请号：US10670409

申请日：2003-09-25

申请人： Heiko Herold ,  Herbert Stutz ,  Hans-Joachim Brockhaus ,  Volker Michele

发明人： Heiko Herold ,  Herbert Stutz ,  Hans-Joachim Brockhaus ,  Volker Michele

IPC分类号： C07C26300

CPC分类号： C07C263/10 ,  C07C265/14

摘要： The present invention provides a process for quenching a gaseous reaction mixture during the phosgenation of diamines in the gas phase to produce diisocyanates. The gaseous reaction mixture contains at least a diisocyanate, phosgene and hydrogen chloride. The quenching liquid is injected into the gas mixture continuously flowing out of a cylindrical reaction zone into the downstream cylindrical quenching zone with the aid of at least two spray nozzles which are arranged at the entrance to the quenching zone at equal distances along the circumference of the quenching zone.

摘要翻译： 本发明提供了一种在气相二光气化期间淬灭气态反应混合物以产生二异氰酸酯的方法。 气态反应混合物至少含有二异氰酸酯，光气和氯化氢。 借助于至少两个喷雾喷嘴将连续流出圆柱形反应区域的气体混合物中的淬火液体注入到沿淬火区域入口处等距离沿着圆周方向的淬火区域 淬火区。

公开(公告)号：US06706913B2

公开(公告)日：2004-03-16

申请号：US10190262

申请日：2002-07-03

申请人： Hans-Joachim Leimkühler ,  Herbert Stutz ,  Helmut Schmidt

发明人： Hans-Joachim Leimkühler ,  Herbert Stutz ,  Helmut Schmidt

IPC分类号： C07C26300

CPC分类号： C07C263/10 ,  C07C265/14

摘要： The present invention relates to a novel process for preparing (cyclo)aliphatic diisocyanates and triisocyanates by phosgenation of (cyclo)aliphatic diamines and triamines in the gas phase by accelerating the flow of at least one of reactants in the region where the reactants are mixed.

摘要翻译： 本发明涉及通过加速混合反应物的区域中的至少一种反应物的流动，在气相中通过（环）脂族二胺和三胺光气化制备（环）脂族二异氰酸酯和三异氰酸酯的新方法。

公开(公告)号：US06433218B1

公开(公告)日：2002-08-13

申请号：US09450573

申请日：1999-11-30

申请人： Rick L. Adkins ,  William E. Slack ,  Edward P. Squiller

发明人： Rick L. Adkins ,  William E. Slack ,  Edward P. Squiller

IPC分类号： C07C26300

CPC分类号： C08G18/325

摘要： The pot life of an isocyanate formulation is controlled by including a chain extender having (a) at least two secondary amine groups, (b) no primary amine groups, and (c) a reactivity low enough that the chain extender will not react sufficiently with isocyanate groups present in the isocyanate formulation to increase the viscosity of the isocyanate formulation to more than 2000 mPa·s within 5 seconds in the isocyanate formulation.

摘要翻译： 通过包括具有（a）至少两个仲胺基团的扩链剂，（b）不含伯胺基团，和（c）足够低的反应性使得扩链剂不能充分反应的反应物与 存在于异氰酸酯配方中的异氰酸酯基团在异氰酸酯配方中在5秒内将异氰酸酯制剂的粘度提高到2000mPa.s以上。

公开(公告)号：US06222065B1

公开(公告)日：2001-04-24

申请号：US09614177

申请日：2000-07-11

申请人： Yutaka Okawa ,  Tomoo Tsujimoto ,  Yutaka Kanbara ,  Hiroshi Matsunaga

发明人： Yutaka Okawa ,  Tomoo Tsujimoto ,  Yutaka Kanbara ,  Hiroshi Matsunaga

IPC分类号： C07C26300

CPC分类号： C07C263/12 ,  C07C263/04 ,  C07C265/14

摘要： 1,5-naphthylenediisocyanate is industrially advantageously produced at high yields by pyrolyzing methyl 1,5-naphthylenecarbamate synthesized by providing 1,5-naphthylenedinitrile as a raw material and carrying out amidation, chlorination and Hofmann rearrangement.

摘要翻译： 通过以1,5-萘二腈作原料合成并进行酰胺化，氯化和霍夫曼重排而合成的1,5-萘基癸氨酸甲酯，工业上有利于高产率制备1,5-萘二异氰酸酯。