Invention Application
- Patent Title: PROCESS FOR PRODUCING POLYAMIDES FROM AMINONITRILES
- Patent Title (中): 一种从氨基腈PRODUCING聚酰胺
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Application No.: PCT/EP9704640Application Date: 1997-08-26
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Publication No.: WO9808889A2Publication Date: 1998-03-05
- Inventor: WEISS ROBERT , KRAUSS DIETER , KELLER DIETER , PIPPER GUNTER , HARDER WOLFGANG , LUDWIG ALFONS , MOHRSCHLADT RALF
- Applicant: BASF AG , WEISS ROBERT , KRAUSS DIETER , KELLER DIETER , PIPPER GUNTER , HARDER WOLFGANG , LUDWIG ALFONS , MOHRSCHLADT RALF
- Assignee: BASF AG,WEISS ROBERT,KRAUSS DIETER,KELLER DIETER,PIPPER GUNTER,HARDER WOLFGANG,LUDWIG ALFONS,MOHRSCHLADT RALF
- Current Assignee: BASF AG,WEISS ROBERT,KRAUSS DIETER,KELLER DIETER,PIPPER GUNTER,HARDER WOLFGANG,LUDWIG ALFONS,MOHRSCHLADT RALF
- Priority: DE19635077 1996-08-30; DE19709390 1997-03-07
- Main IPC: C08G69/00
- IPC: C08G69/00 ; C08G69/04 ; C08G69/08 ; C08G69/28 ; C08G69/36
Abstract:
A process for producing a polyamide by reacting at least one aminonitrile with water has the following steps: (1) at least one aminonitrile is reacted with water at a temperature from 100 to 360 DEG C and pressure from 0.1 to 35.x 10 Pa, yielding a reaction mixture; (2) the reaction mixture is further reacted at a temperature from 150 to 400 DEG C and pressure lower than the pressure in step 1. The temperature and pressure are selected to yield a first gaseous phase and a first liquid or solid phase or a mixture of a first solid and a first liquid phase. The first gaseous phase is separated from the first liquid or solid phase or the mixture of a first liquid and a first solid phase is separated; and (3) the first liquid or solid phase or the mixture of a first liquid and first solid phase is mixed with a water-containing gaseous or liquid phase at a temperature from 150 to 360 DEG C and pressure from 0.1 to 30 x 10 Pa, yielding a product mixture. Also disclosed are other embodiments of this process and the thus produced polyamides.
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