公开(公告)号：TR200002250T2

公开(公告)日：2000-12-21

申请号：TR200002250

申请日：1999-01-29

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  KRAUSS DIETER ,  HIDENBRANDT VOLKER

IPC: C08G69/04 ,  C08G69/08 ,  C08G69/16

Abstract: The continuous process for producing a polyamide by reacting at least one aminonitrile with water comprises the following steps:(1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 15x106 Pa in a flow tube containing packing elements of a Brönsted acid catalyst selected from beta-zeolite, sheet-silicate or titanium dioxide packing elements and metallic packing elements to obtain a reaction mixture,(2) further reacting the reaction mixture at from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or first solid phase or the mixture of first liquid and first solid phase, and(3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 370° C. and a pressure from 0.1 to 30x106 Pa to obtain a product mixture.