公开(公告)号：EP2626345A1

公开(公告)日：2013-08-14

申请号：EP11830666.1

申请日：2011-10-04

申请人： Asahi Kasei Chemicals Corporation

发明人： SHINOHATA Masaaki ,  MIYAKE Nobuhisa

IPC分类号： C07C263/20 ,  C07C263/04 ,  C07C265/14

CPC分类号： C07C263/20 ,  B01D3/009 ,  B01D3/143 ,  B01D3/34 ,  C07B63/00 ,  C07C263/04 ,  Y02P20/127 ,  C07C265/14

摘要： An object of the present invention is to provide the separation of a mixture containing plural types of reversibly reacting compounds, especially, a method for efficiently separating an isocyanate from a mixture containing the isocyanate and a hydroxy compound, particularly, a method for efficiently separating an isocyanate and a hydroxy compound that form by the thermal decomposition of an N-substituted carbamic acid ester. The object is attained by a method for separating, with a multi-stage distillation column, a mixture containing an active hydrogen-containing compound (A) and a compound (B) that reversibly reacts with the active hydrogen-containing compound (A), the method comprising distillation-separating the active hydrogen-containing compound (A) and the compound (B) with the multi-stage distillation column in the presence of an intermediate-boiling-point inactive compound (C) that has a normal boiling point between a normal boiling point of the active hydrogen-containing compound (A) and a normal boiling point of the compound (B) and is chemically inactive for both of the (A) and the compound (B).

公开(公告)号：EP2915803A1

公开(公告)日：2015-09-09

申请号：EP13851480.7

申请日：2013-10-31

申请人： Asahi Kasei Chemicals Corporation

发明人： SHINOHATA Masaaki ,  MIYAKE Nobuhisa

IPC分类号： C07C265/04 ,  C07C15/44 ,  C07C263/18 ,  C07C271/52

摘要： The present invention relates to a polyisocyanate composition comprising, on the basis of the total mass of the polyisocyanate composition, 97 weight % or more of a polyisocyanate, and 2.0 mass ppm or more and 1.0×10 4 mass ppm or less of a compound having at least one unsaturated bond in which the compound is a different compound from the polyisocyanate, or 5.0 mass ppm or more and 2.0×10 4 mass ppm or less of at least one inactive compound selected from the group consisting of a hydrocarbon compound, an ether compound, a sulfide compound, a halogenated hydrocarbon compound, a Si-containing hydrocarbon compound, a Si-containing ether compound, and a Si-containing sulfide compound.

摘要翻译： 本发明涉及一种多异氰酸酯组合物，其包含基于多异氰酸酯组合物的总质量为97重量％以上的多异氰酸酯，2.0质量ppm以上且1.0×10 4质量ppm以下的具有 至少一个不饱和键，其中所述化合物是与多异氰酸酯不同的化合物，或5.0质量ppm以上和2.0×10 4质量ppm以下的至少一种选自烃化合物，醚 化合物，硫化物化合物，卤代烃化合物，含Si的烃化合物，含Si的醚化合物和含Si的硫化物。

公开(公告)号：EP2641896A1

公开(公告)日：2013-09-25

申请号：EP12829139.0

申请日：2012-03-30

申请人： Asahi Kasei Chemicals Corporation

发明人： SHINOHATA Masaaki ,  MIYAKE Nobuhisa

IPC分类号： C07C263/18 ,  C07C41/58 ,  C07C43/10 ,  C07C49/203 ,  C07C49/213 ,  C07C235/14

CPC分类号： B01D3/009 ,  C07C37/74 ,  C07C41/42 ,  C07C263/20 ,  C07C269/08 ,  C07C331/30 ,  C07C2601/14 ,  Y02P20/127 ,  C07C265/14 ,  C07C271/12 ,  C07C271/44

摘要： The present invention provides a separation method of separating (A) and (B), comprising: a step of separating at least either an active hydrogen-containing compound (A) or a compound (B) that reversibly reacts with (A) from a mixture containing (A) and (B) by distillation in a multistage distillation column; and a step of supplying the mixture to an inactive region formed within the multistage distillation column.

摘要翻译： 本发明提供分离（A）和（B）的分离方法，其包括：将与（A）可逆反应的活性氢化合物（A）或化合物（B）中的至少一种从 在多级蒸馏塔中通过蒸馏含有（A）和（B）的混合物; 以及将混合物供给到形成在多级蒸馏塔内的非活性区域的步骤。

公开(公告)号：EP2980066A1

公开(公告)日：2016-02-03

申请号：EP14774772.9

申请日：2014-03-28

申请人： Asahi Kasei Chemicals Corporation

发明人： SHINOHATA Masaaki ,  TAKEUCHI Kouji ,  FUJIMOTO Naoki ,  MIYAKE Nobuhisa

IPC分类号： C07C263/04 ,  C07C263/20 ,  C07C265/14 ,  C07C269/04 ,  C07C271/06

CPC分类号： C07C263/04 ,  C07C269/04 ,  Y02P20/51 ,  C07C265/14 ,  C07C271/06

摘要： A method for producing an isocyanate, comprising: a carbamation step of generating an N-substituted carbamate from an organic primary amine, urea and an organic hydroxy compound according to a carbamation reaction, and then recovering a first gaseous phase component containing the urea and/or a compound having a carbonyl group derived from the urea, the organic hydroxy compound, and ammonia; a condensation step of condensing the first gaseous phase component with a condenser; an isocyanate production step of producing an isocyanate by subjecting the N-substituted carbamate to pyrolysis; an ammonia absorption step of allowing a second gaseous phase component containing ammonia recovered as a gaseous phase component from the condenseras a main component, to be absorbed by absorption water, and generating gas-absorbed water; and an ammonia stripping step of heating the gas-absorbed water to separate ammonia from the gas-absorbed water.

摘要翻译： 一种异氰酸酯的制造方法，包括：根据氨基甲酰化反应从有机伯胺，脲和有机羟基化合物生成N-取代氨基甲酸酯的氨基甲酸酯化步骤，然后回收含有尿素和/ 或具有衍生自脲，有机羟基化合物和氨的羰基的化合物; 将第一气相成分与冷凝器冷凝的冷凝步骤; 通过使N-取代氨基甲酸酯进行热解而制造异氰酸酯的异氰酸酯制造工序; 氨吸收步骤，使包含作为气相成分回收的氨的第二气相成分从所述冷凝器主体成分吸收，并吸收吸收水; 以及氨汽提步骤，加热气体吸收的水以从气体吸收的水中分离出氨。