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    METHOD FOR PRODUCING ISOCYANATE
    2.
    发明公开
    METHOD FOR PRODUCING ISOCYANATE 审中-公开

    公开(公告)号：EP4063347A1

    公开(公告)日：2022-09-28

    申请号：EP19953515.4

    申请日：2019-11-20

    申请人： Asahi Kasei Kabushiki Kaisha

    发明人： TAKAGAKI Kazuhiro ,  IWATA Yusuke ,  SHINOHATA Masaaki ,  NAKAOKA Koichi ,  SAKURAI Yusuke

    IPC分类号： C07C263/04 ,  C07C265/04 ,  C07C265/14 ,  C07C323/57

    摘要： This isocyanate production method, for continuously producing an isocyanate while suppressing side reactions, is a method for producing an isocyanate through the thermal decomposition of carbamate, and comprises: a thermal decomposition step in which a mixed solution containing carbamate and a compound (A) having a specific structure is continuously put into a pyrolysis reactor and carry out a pyrolysis reaction of carbamate; a low-boiling-point decomposition product recovery step in which a low-boiling-point decomposition product having a lower standard boiling point than the compound (A) is continuously extracted in a gaseous form from the pyrolysis reactor, and a high-boiling-point component recovery step in which a liquid phase component, which is not recovered in a gaseous form in the low-boiling-point decomposition product recovery step, is continuously extracted as a high-boiling-point component from the pyrolysis reactor.

    ISOCYANATE PRODUCTION METHOD
    6.
    发明公开
    ISOCYANATE PRODUCTION METHOD 审中-公开

    公开(公告)号：EP3626705A1

    公开(公告)日：2020-03-25

    申请号：EP18803222.1

    申请日：2018-05-15

    申请人： Asahi Kasei Kabushiki Kaisha

    发明人： MIYAKE, Nobuhisa ,  NAKAOKA, Koichi ,  UEMATSU, Tsubasa ,  SAKURAI, Yusuke ,  ISHII, Yusuke ,  TAKAGAKI, Kazuhiro ,  SASAKI, Takeharu ,  KOSUGI, Yuji ,  OHKUBO, Atsushi ,  SHINOHATA, Masaaki

    IPC分类号： C07C263/04 ,  C07C265/14

    摘要： An isocyanate production method according to the present invention is a method in which an isocyanate is produced by subjecting a carbamate to thermal decomposition, and includes: a step of preparing a mixture liquid containing the carbamate, an inactive solvent and a polyisocyanate compound; a step of conducting a thermal decomposition reaction of the carbamate by continuously introducing the mixture liquid into a thermal decomposition reactor; a step of collecting a low-boiling decomposition product by continuously extracting the low-boiling decomposition product in a gaseous state from the reactor, the low-boiling decomposition product having a boiling point lower than the polyisocyanate compound; and a step of collecting a high-boiling component by continuously extracting, from the reactor, a liquid phase component which is not collected in a gaseous state at the step of collecting the low-boiling decomposition product.

    METHOD FOR PRODUCING M-XYLYLENE DIISOCYANATE
    9.
    发明公开
    METHOD FOR PRODUCING M-XYLYLENE DIISOCYANATE 有权
    VERFAHREN ZUR HERSTELLUNG VON M-XYLYLEN-DIISOCYANAT

    公开(公告)号：EP3037410A4

    公开(公告)日：2017-05-03

    申请号：EP14838284

    申请日：2014-08-11

    申请人： MITSUI CHEMICALS INC

    发明人： KOJIMA KOUYA ,  TSUKADA HIDETAKA ,  TAKASHINA MAMORU ,  SHIMAKAWA CHITOSHI ,  KAKINUMA NAOYUKI

    IPC分类号： C07C263/04 ,  C07C209/48 ,  C07C253/28 ,  C07C265/14 ,  C07C269/00 ,  C07C269/06 ,  C07C271/14 ,  C07C271/20 ,  C07C273/18 ,  C07C275/24

    CPC分类号： C07C263/06 ,  C07C209/48 ,  C07C253/28 ,  C07C263/04 ,  C07C269/00 ,  C07C269/06 ,  C07C271/20 ,  C07C273/1809 ,  C07C273/1854 ,  C07C265/14 ,  C07C271/14 ,  C07C275/24

    摘要： A method for producing meta-xylylenediisocyanates includes a reaction step in which monohalogenated benzenes, formaldehydes, and an amide compound represented by general formula (1) below are allowed to react in the presence of an acidic liquid to produce a bisamide compound; a dehalogenation step in which in the bisamide compound, the halogen atom derived from the monohalogenated benzenes is replaced with a hydrogen atom; and a thermal decomposition step in which the bisamide compound from which the halogen atom is eliminated is subjected to thermal decomposition. In the reaction step, the acidic liquid contains inorganic acid, the equivalent ratio of the hydrogen atom of the inorganic acid relative to the monohalogenated benzenes is more than 14, the acidic liquid has an acid concentration of more than 90 mass%, and the reaction temperature is more than 10°C. General formula (1): (in general formula (1), R 1 represents an alkoxy group or an amino group).

    摘要翻译： 作为间苯二甲基二异氰酸酯的制造方法，可以列举在酸性液体的存在下使单卤代苯，甲醛类和下述通式（1）所示的酰胺化合物反应而生成双酰胺化合物的反应工序， 脱卤化步骤，其中在双酰胺化合物中，源自单卤代苯的卤素原子被氢原子置换; 以及热分解步骤，其中消除卤素原子的双酰胺化合物经受热分解。 在反应步骤中，酸性液体含有无机酸，无机酸的氢原子相对于单卤代苯的当量比大于14，酸性液体的酸浓度大于90质量％，并且反应 温度超过10°C。 通式（1）:(通式（1）中，R 1表示烷氧基或氨基。

    METHOD FOR PRODUCING N-SUBSTITUTED CARBAMIC ACID ESTER
    10.
    发明公开
    METHOD FOR PRODUCING N-SUBSTITUTED CARBAMIC ACID ESTER 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON N-SUBSTITUIERTEMCARBAMINSÄUREESTER

    公开(公告)号：EP3153499A1

    公开(公告)日：2017-04-12

    申请号：EP16198429.9

    申请日：2009-09-29

    申请人： ASAHI KASEI KABUSHIKI KAISHA

    发明人： SHINOHATA, Maasaki ,  MIYAKE, Nobuhisa

    IPC分类号： C07C263/04 ,  C07C265/14 ,  C07C269/04 ,  C07C271/42 ,  C07C269/00

    CPC分类号： C07C275/40 ,  C07C263/04 ,  C07C269/00 ,  C07C269/04 ,  C07C271/54 ,  C07C271/56 ,  C07C271/58 ,  C07C2601/14 ,  C07C265/14 ,  C07C271/52

    摘要： The present invention is a method for producing an N-substituted carbamic acid ester derived from an organic amine from an organic amine, a carbonic acid derivative and a hydroxy composition containing one or more types of hydroxy compounds, wherein the organic amine, the carbonic acid derivative and the hydroxy composition are reacted using a urethane production reaction vessel provided with a condenser, a gas containing the hydroxy composition, the compound having the carbonyl group derived from the carbonic acid derivative, and an ammonia formed as a by-product in the reaction, is introduced into the condenser provided in the urethane production reaction vessel, and the hydroxy composition and the compound having the carbonyl group derived from the carbonic acid derivative are condensed, and wherein a stoichiometric ratio of a hydroxy compound contained in the condensed hydroxy composition to the condensed compound having the carbonyl group derived from the carbonic acid derivative is 1 or more, and a ratio of number of carbonyl groups (-C(=O)-) contained in the compound having the carbonyl group derived from the carbonic acid derivative and number of ammonia molecules contained in the ammonia recovered as a gas from the condenser is 1 or less.

    摘要翻译： 本发明是由有机胺，碳酸衍生物和含有一种或多种羟基化合物的羟基组合物生产由有机胺衍生的N-取代氨基甲酸酯的方法，其中有机胺，碳酸 衍生物和羟基组合物使用具有冷凝器，含有羟基组合物的气体，具有衍生自碳酸衍生物的羰基的化合物和在反应中作为副产物形成的氨的氨酯生产反应容器进行反应 被引入聚氨酯生产反应容器中的冷凝器中，羟基组合物和衍生自碳酸衍生物的具有羰基的化合物被缩合，其中在缩合羟基组合物中包含的羟基化合物的化学计量比与 具有衍生自碳酸衍生物的羰基的缩合化合物 为1以上，作为气体从作为气体回收的氨中含有的来自碳酸衍生物的羰基的化合物中所含的羰基数（-C（= O） - ）的比例为 冷凝器为1或更小。