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    Phosgenation method
    61.
    发明授权
    Phosgenation method 失效
    光气化方法

    公开(公告)号：US5693853A

    公开(公告)日：1997-12-02

    申请号：US557566

    申请日：1995-11-14

    申请人： Soren Abrahamsson

    发明人： Soren Abrahamsson

    IPC分类号： C01B32/80 ,  C07B43/10 ,  C07C263/10 ,  C07C265/14 ,  C07C263/00

    CPC分类号： C07C263/10

    摘要： A method of phosgenation while using carbonyl chloride produced from chlorine and contaminated carbon monoxide. The obtained contaminated carbonyl chloride is purified prior to being delivered to the phosgenation process. The carbonyl chloride is purified by absorption in a solvent and the obtained carbonyl chloride solution is used for the phosgenation reaction. The carbonyl chloride is conveniently purified in an absorption column which is also used to recover carbonyl chloride from waste gases deriving from the phosgenation process, wherein the solution of fresh and recovered carbonyl chloride is delivered commonly to the phosgenation process.

    摘要翻译： 一种使用由氯和受污染的一氧化碳产生的碳酰氯的光气化方法。 将获得的污染的碳酰氯在输送到光气化过程之前被纯化。 通过在溶剂中吸收来纯化碳酰氯，并将所得碳酰氯溶液用于光气化反应。 碳酰氯在吸收塔中方便地纯化，吸收塔也用于从由气化过程得到的废气中回收碳酰氯，其中新鲜和回收的碳酰氯溶液通常送至光气化过程。

    Procedure for the preparation of alkyl isocyanates
    62.
    发明授权
    Procedure for the preparation of alkyl isocyanates 失效
    烷基异氰酸酯的制备方法

    公开(公告)号：US5315034A

    公开(公告)日：1994-05-24

    申请号：US60035

    申请日：1993-05-11

    申请人： Franco Mizia ,  Franco Rivetti ,  Ugo Romano

    发明人： Franco Mizia ,  Franco Rivetti ,  Ugo Romano

    IPC分类号： C07B61/00 ,  C07C263/00 ,  C07C263/04 ,  C07C265/04 ,  C07C265/10 ,  C07C265/14

    CPC分类号： C07C263/04

    摘要： Multistep process for the preparation of alkyl mono and diisocyanates consisting in reacting the corresponding aliphatic amine or diamine with dimethylcarbonate and, substantially, in partially vaporizing and converting the urethane thus formed in an evaporator to subsequently terminate the cracking in a II.degree. reactor, and finally subjecting the cracking product to fractional distillation at reduced pressure, recycling the unconverted part to the partial vaporization step.

    摘要翻译： 制备烷基单异氰酸酯和二异氰酸酯的多步法是将相应的脂族胺或二胺与碳酸二甲酯反应，并基本上部分汽化并在蒸发器中转化成如此形成的氨基甲酸酯，从而在II DEG反应器中终止裂化，最后 使裂化产物在减压下进行分馏，将未转化的部分再循环到部分汽化步骤。

    Process for the production of modified polyisocyanates, the polyisocyanates obtainable by this process and their use as binders or as a binder component
    63.
    发明授权
    Process for the production of modified polyisocyanates, the polyisocyanates obtainable by this process and their use as binders or as a binder component 失效
    用于制备改性多异氰酸酯的方法，可通过该方法获得的多异氰酸酯及其作为粘合剂或粘合剂组分的用途

    公开(公告)号：US4935486A

    公开(公告)日：1990-06-19

    申请号：US343328

    申请日：1989-04-26

    申请人： Wolfgang Wellner

    发明人： Wolfgang Wellner

    IPC分类号： C07C263/00 ,  C07C67/00 ,  C07C241/00 ,  C07C265/10 ,  C07C265/12 ,  C07C271/12 ,  C08G18/10 ,  C08G18/79 ,  C08G18/80

    CPC分类号： C08G18/8045 ,  C08G18/10 ,  C08G18/791

    摘要： The present invention is directed to a process for the production of urethane- or isocyanurate-modified polyisocyanates based on a starting diisocyanate selected from (i) 2,4-diisocyanatotoluene or mixtures thereof with up to about 35%, based on the mixture, of 2,6-diisocyanatotoluene, (ii) mixtures of the diisocyanates mentioned under (i) with up to 80 NCO equivalent %, based on the mixture, of 1,6-diisocyanatohexane and (iii) 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl cyclohexane by reacting the starting diisocyanate with substoichiometric quantities of polyhydric alcohols or trimerizing a portion of the isocyanate groups of the starting diisocyanate, removing sufficient excess, unreacted starting diisocyanate to obtain modified polyisocyanates containing at most 3% by weight, based on solids, of monomeric starting diisocyanate, characterized in that, the content of starting diisocyanate is further reduced by adding at least 10 mol-% water, based on the content of unreacted 2,4-diisocyanatotoluene or 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl cyclohexane present, to the modified polyisocyanates.The present invention is also directed to the low-monomer polyisocyanates obtained by this process and their use as the binder component in one-component or two-component polyurethane lacquers.

    摘要翻译： 本发明涉及一种制备基于起始二异氰酸酯的起始二异氰酸酯的方法，所述起始二异氰酸酯选自（i）2,4-二异氰酸根合甲苯或其混合物，基于混合物，最高约35％ 2,6-二异氰酸基甲苯，（ii）（i）中提到的二异氰酸酯与基于混合物的高达80NCO当量％的混合物的1,6-二异氰酸根合己烷和（iii）1-异氰酸根合-3,3,5 通过使起始二异氰酸酯与亚化学计量的多元醇反应或将起始二异氰酸酯的一部分异氰酸酯基团三聚，除去足够多的未反应的起始二异氰酸酯，得到含有至多3重量％的改性多异氰酸酯， 基于固体的单体起始二异氰酸酯，其特征在于，通过加入至少10mol％的水，基于未反应的2,4-二异氰酸酯的含量进一步降低起始二异氰酸酯的含量， 二异氰酸根合甲苯或1-异氰酸酯基-3,3,5-三甲基-5-异氰酸甲酯环己烷存在于改性的多异氰酸酯中。 本发明还涉及通过该方法获得的低单体多异氰酸酯及其在单组分或双组分聚氨酯漆中作为粘合剂组分的用途。

    Method for producing isocyanates
    70.
    发明授权
    Method for producing isocyanates 有权
    异氰酸酯的制备方法

    公开(公告)号：US09376377B2

    公开(公告)日：2016-06-28

    申请号：US14905026

    申请日：2014-07-21

    申请人： Covestro Deutschland AG

    发明人： Friedhelm Steffens ,  Jan Busch ,  Markus Hollaus

    IPC分类号： C07C263/00 ,  C07C263/10

    CPC分类号： C07C263/10 ,  C07C265/14

    摘要： The invention relates to a method for producing an isocyanate by reacting the corresponding primary amine with phosgene in a reactor (100) which comprises at least one reaction zone (110) and a quenching zone (120) arranged below said reaction zone, having the following steps: (i) introducing a gaseous amine flow (1) and a gaseous phosgene flow (2) into the reactor (100) and reacting the flows in the reaction zone (110) into a product gas flow (3) comprising isocyanate and hydrogen chloride and optionally excess phosegene; (ii) introducing the product gas flow (3) into the quenching zone (120), in which the product gas flow is cooled by injecting a quenching liquid (4) via at least one quenching nozzle (200) such that a liquid flow (5) comprising the quenching liquid (4) and isocyanate and a gaseous flow (6) comprising hydrogen chloride and optionally phosgene are obtained; and (iii) separating the isocyanate from the liquid flow (5) obtained in step (ii); wherein the temperature Tw*, of the wall of the reaction zone (110) directly above the quenching zone (120) is kept at a value which lies maximally 4.0%, preferably maximally 2.0%, below the maximum temperature, Twmax, of the wall of the reaction zone, said maximum temperature being specified in Kelvin.

    摘要翻译： 本发明涉及通过在反应器（100）中使相应的伯胺与光气反应制备异氰酸酯的方法，反应器（100）包含至少一个反应区（110）和位于所述反应区下方的骤冷区（120），其具有以下 步骤：（i）将气态胺流（1）和气态光气流（2）引入反应器（100）中并将反应区（110）中的流反应成包含异氰酸酯和氢的产物气流（3） 氯化物和任选的过量荧光素; （ii）将产物气流（3）引入淬火区（120），其中通过至少一个淬火喷嘴（200）喷射淬火液（4）来冷却产物气流，使得液流 5）包含骤冷液体（4）和异氰酸酯和包含氯化氢和任选的光气的气流（6）; 和（iii）从步骤（ii）中获得的液体流（5）中分离异氰酸酯; 其中直接在淬火区（120）上方的反应区（110）的壁的温度Tw *保持在最大值4.0％的范围内，优选最大为2.0％，低于壁的最大温度Twmax 的反应区，所述最高温度以开尔文为单位。