公开(公告)号：WO2004007425A2

公开(公告)日：2004-01-22

申请号：PCT/EP0306669

申请日：2003-06-25

Applicant: DEGUSSA ,  JAEGER BERND ,  HAAS THOMAS ,  STOCHNIOL GUIDO ,  LETTMANN CHRISTIAN ,  HOFEN WILLI ,  STADTMUELLER KLAUS ,  LOTZ JOERG

Inventor： JAEGER BERND ,  HAAS THOMAS ,  STOCHNIOL GUIDO ,  LETTMANN CHRISTIAN ,  HOFEN WILLI ,  STADTMUELLER KLAUS ,  LOTZ JOERG

IPC: C07B61/00 ,  C07C209/72 ,  C07C211/36 ,  C07C209/00

CPC classification number: C07C209/72 ,  C07C211/36

Abstract: The invention relates to a process for increasing the selectivity of the hydrogenation of 4,4'-diaminodiphenylmethane (4,4'-MDA) to diaminodicyclohexylmethane (4,4'-HMDA) by catalytic hydrogenation of a mixture containing 4,4'-MDA as the main component and its mono-N-methyl derivative as a secondary component. According to the invention, the hydrogenation is terminated before a conversion of 4,4'-MDA to 4,4'-HMDA of 99% is achieved. Under these conditions, a substantially smaller proportion of the N-methyl-4,4'-MDA is hydrogenated to N-methyl-4,4-HMDA.

Abstract translation: 本发明涉及通过催化氢化含有4,4'-二氨基二苯基甲烷（4,4'-MDA）的混合物的方法提高4,4'-二氨基二苯基甲烷（4,4'-MDA） MDA为主要成分，其单-N-甲基衍生物为次要成分。 根据本发明，在将4,4'-MDA转化为99％的4,4'-HMDA之前终止氢化。 在这些条件下，将大部分比例的N-甲基-4,4'-MDA氢化成N-甲基-4,4-HMDA。

公开(公告)号：WO2008006661A3

公开(公告)日：2008-02-28

申请号：PCT/EP2007055879

申请日：2007-06-14

Applicant: EVONIK DEGUSSA GMBH ,  WERLE PETER ,  KRIMMER HANS-PETER ,  SCHMIDT MANFRED ,  STADTMUELLER KLAUS ,  TRAGESER MARTIN

Inventor： WERLE PETER ,  KRIMMER HANS-PETER ,  SCHMIDT MANFRED ,  STADTMUELLER KLAUS ,  TRAGESER MARTIN

IPC: C07D251/34

CPC classification number: C07D251/34

Abstract: The invention is directed to an improved, reliably performable process for preparing triallyl isocyanurate (TAIC) by Cu 2+ -catalysed rearrangement of triallyl cyanurate (TAC) at at least 90°C. According to the invention, TAC and, if required, also a Cu 2+ catalyst and solvent are fed continuously to a start reaction mixture after onset of the initially inhibited isomerization reaction, the isomerization is performed at from 90 to 160°C and an amount of reaction mixture equivalent to the amount of reactant is drawn off continuously and sent to the workup. Preference is given to effecting the isomerization in TAIC as the reaction medium.

Abstract translation: 本发明涉及一种通过在至少90℃下氰脲酸三烯丙酯（TAC）的Cu2 + +催化重排制备三烯丙基异氰脲酸酯（TAIC）的改进的，可靠实施的方法。 根据本发明，在最初抑制的异构化反应开始后，将TAC和如果需要的还有Cu +2 + /催化剂和溶剂连续加入到起始反应混合物中，异构化在90℃ 加热至160℃，连续排出与反应物量相当的量的反应混合物并送至后处理。 优选在TAIC中作为反应介质进行异构化。