公开(公告)号：EP2079685A1

公开(公告)日：2009-07-22

申请号：EP07822258.5

申请日：2007-11-06

Applicant: BASF SE

Inventor： DAISS, Andreas ,  WÖLFERT, Andreas ,  KNÖSCHE, Carsten ,  STROEFER, Eckhard

IPC: C07C263/10 ,  C07C265/14

CPC classification number: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a method for producing isocyanates by reacting amines with phosgene in the gas phase in at least one reaction zone, the reaction mixture being guided to at least one zone in which at least one liquid is injected to terminate the reaction. The invention is characterized by guiding the reaction mixture through a continuous quenching liquid curtain which completely fills the cross-section of the quenching zone.

Abstract translation: 本发明涉及一种通过使胺与光气在至少一个反应区中在气相中反应来生产异氰酸酯的方法，该反应混合物被引导至至少一个区域，在该区域中注入至少一种液体以终止反应。 本发明的特征在于引导反应混合物通过完全填充淬火区横截面的连续淬火液幕。

公开(公告)号：EP2069292A1

公开(公告)日：2009-06-17

申请号：EP07788303.1

申请日：2007-08-08

Applicant: BASF SE

Inventor： KLOETZER, Matthias ,  BLANKERTZ, Heinrich-Josef ,  GEORGI, Gunter ,  STROEFER, Eckhard ,  KRASE, Volker ,  SCHULZ, Gerhard ,  ANDREAS, Warzecha

IPC: C07C263/04 ,  C07C265/10 ,  C07C265/14

CPC classification number: C07C263/04 ,  C07C2601/14 ,  C07C265/14

Abstract: The invention relates to a multistage process for the continuous preparation of organic, distillable isocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic amines with urea and alcohols to liberate ammonia and form low molecular weight monomeric urethanes and thermal dissociation of the latter, in which by-products formed are at least partly utilized.

Abstract translation: 本发明涉及连续制备有机可蒸馏异氰酸酯，优选二异氰酸酯，特别优选脂族或脂环族二异氰酸酯的多阶段方法，其通过相应的有机胺与脲和醇反应以释放氨并形成低分子量单体氨基甲酸酯和热 后者的分解，其中形成的副产物至少部分被利用。

公开(公告)号：EP1699776B1

公开(公告)日：2008-11-12

申请号：EP04804133.9

申请日：2004-12-21

Applicant: BASF SE

Inventor： SIEGERT, Markus ,  LANG, Neven ,  STROEFER, Eckhard ,  STAMMER, Achim ,  FRIESE, Thorsten ,  HASSE, Hans

IPC: C07D323/06

CPC classification number: C07D323/06

Abstract: The invention relates to a method for separating trioxane from an inlet flow (I) consisting of formaldehyde, trioxane and water. Said method consists in a) preparing an inlet flow (I), which contains formaldehyde as the main component and trioxane and water as auxiliary components, b) mixing the inlet flow (I) with a return flow (VII) containing trioxane as the main component and formaldehyde and water as auxiliary components. An inlet flow (Ia), which contains formaldehyde as the main component and trioxane and water as the auxiliary components, is obtained. Said method also consists in c) distilling the inlet flow (Ia) in a first distillation step at a pressure of between 0.1 2.5 bars, thus enabling a flow (II), which contains formaldehyde as the main component and water as the auxiliary component, and a flow (III), which contains trioxane as the main component and water and formaldehyde as the auxiliary components, to be obtained, d) distilling the flow (III), optionally after separating materials at a low-boiling point from the flow (III) in a low-boiling separation step and in a second distillation step at a pressure of between 0.2 17.5 bars, whereby the pressure in the second distillation step is 0.1 - 15 bars higher than the pressure in the first distillation step. A flow (IV) is obtained which is essentially made of trioxane, and also a flow V which contains trioxane as the main component and water and formaldehyde as the auxiliary components, e) optionally mixing the flow (V) with a flow (IX), which contains water as the main component, in order to obtain a flow (Va) having a higher water content than flow (V), whereby flow (Va) contains trioxane as the main component and water and formaldehyde as the auxiliary components, f) distilling the flow (V) and/or flow (Va) in a third in distillation step at a pressure of between 1 - 10 bars, whereby a flow (VI), which is essentially made of water, and the return flow (VII), which contains trioxane as the main component and water and formaldehyde as the auxiliary components, are obtained.

公开(公告)号：EP1912934A2

公开(公告)日：2008-04-23

申请号：EP06792617.0

申请日：2006-07-31

Applicant: BASF SE

Inventor： WÖLFERT, Andreas ,  KNÖSCHE, Carsten ,  HEILIG, Manfred ,  STROEFER, Eckhard

IPC: C07C263/10 ,  C07C265/14

CPC classification number: C07C263/10 ,  C07C263/20 ,  C07C265/14

Abstract: The invention relates to a method for producing diisocyanates from diamines and phosgene in the gas phase.