公开(公告)号：US06660857B2

公开(公告)日：2003-12-09

申请号：US10210878

申请日：2002-08-02

Applicant: Frank P. W. Agterberg ,  Rudolf P. M. Guit ,  Matthias R. J. Offermanns

Inventor： Frank P. W. Agterberg ,  Rudolf P. M. Guit ,  Matthias R. J. Offermanns

IPC: C07D20108

CPC classification number: C07D201/12 ,  C07D201/08

Abstract: A process for the preparation of &egr;-caprolactam starting from 6-aminocaproic acid, 6-aminocaproamide, 6-aminocaproic ester, 6-aminocapronitrile, oligomers or polymers of these compounds or mixtures comprising at least two of these compounds, which process is performed in the presence of N-(5-carboxypentyl)-&egr;-caprolactam and/or derivative thereof in an amount of less than 50 wt. % and more than 0.1 wt. % (based on the total reaction mixture).

Abstract translation: 从6-氨基己酸，6-氨基己酰胺，6-氨基己酸酯，6-氨基己腈，这些化合物的低聚物或聚合物或包含这些化合物中的至少两种的混合物制备ε-己内酰胺的方法，该方法在 N-（5-羧基戊基） - 己内酰胺和/或其衍生物的存在量小于50wt。 ％和大于0.1wt。 ％（基于总反应混合物）。

公开(公告)号：US5210331A

公开(公告)日：1993-05-11

申请号：US814875

申请日：1991-12-31

Applicant: Wim Buijs ,  Leon H. B. Frijns ,  Matthias R. J. Offermanns

Inventor： Wim Buijs ,  Leon H. B. Frijns ,  Matthias R. J. Offermanns

IPC: C07C37/055 ,  C07C37/56

CPC classification number: C07C37/0555 ,  C07C37/56

Abstract: The invention relates to a process for the preparation of a phenol by oxidative decarboxylation of a corresponding arylcarboxylic acid in the presence of a Cu-containing catalyst, the phenol being obtained through a hydrolysis step. The characteristic part of the process is oxidation of a Cu(I)-containing catalyst and reduction and hydrolysis in the absence of oxygen. The process can be carried out under liquid phase or gas phase conditions in a one-step or multi-step process and nucleation agents can be added for crystallization during catalyst oxidation. In a preferred embodiment, at least 0.04 wt.% copper remains present as Cu(I) after oxidation.

Abstract translation: 本发明涉及一种通过在含Cu催化剂的存在下通过相应的芳基羧酸的氧化脱羧来制备苯酚的方法，该酚通过水解步骤获得。 该方法的特征部分是在不存在氧的情况下，含Cu（I）的催化剂的氧化和还原和水解。 该过程可以在液相或气相条件下在一步或多步法中进行，并且可以在催化剂氧化期间加入成核剂用于结晶。 在一个优选的实施方案中，至少0.04重量％的铜在氧化后保留作为Cu（I）存在。