EP 1406948 A1 20040414 - METHOD FOR PRODUCING HIGH-VISCOSITY OR HIGHLY-STABLE POLYCONDENSATES AND DEMONOMERIZED PA6
Title (en)
METHOD FOR PRODUCING HIGH-VISCOSITY OR HIGHLY-STABLE POLYCONDENSATES AND DEMONOMERIZED PA6
Title (de)
VERFAHREN ZUR HERSTELLUNG VON HOCHVISKOSEN ODER HOCHSTABILISIERTEN POLYKONDENSATEN UND ENTMONOMERISIERTEM PA6
Title (fr)
PROCEDE DE PRODUCTION DE POLYCONDENSATS DE HAUTE VISCOSITE OU HAUTEMENT STABILISES ET DE PA6 DEMONOMERISES
Publication
Application
Priority
- DE 10126133 A 20010529
- EP 0205441 W 20020517
Abstract (en)
[origin: WO02096975A1] The invention relates to a method and a device for producing high-viscosity or highly stable polycondensates and demonomerized PA6 using vertical reaction stages. According to said method, the molten polycondensate is fed from a preliminary stage into the upper end of the reaction stage and is distributed by means of distribution devices and elements that increase the surface area. Waste reactant is removed from the flowing molten polycondensate using inert gas or a vacuum and is withdrawn from the reaction stage above the level of the molten polycondensate. The product residence time in the sump is selected in such a way that at the lower end of the reaction stage a polycondensate at chemical equilibrium is produced, part of which is re-supplied to the upper end of the reaction stage, the remaining part being withdrawn from the reaction stage, according to the selected throughput, for further use.
IPC 1-7
IPC 8 full level
B01J 19/00 (2006.01); B01J 19/24 (2006.01); C08G 69/04 (2006.01); C08G 69/16 (2006.01); C08G 69/18 (2006.01)
CPC (source: EP)
B01J 19/0053 (2013.01); B01J 19/2465 (2013.01); B01J 19/247 (2013.01); C08G 69/04 (2013.01); C08G 69/16 (2013.01); C08G 69/18 (2013.01); C08G 69/46 (2013.01); B01J 2219/00166 (2013.01); B01J 2219/00182 (2013.01)
Citation (search report)
See references of WO 02096975A1
Citation (examination)
DE 19506407 A1 19960829 - POLYMER ENG GMBH [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02096975 A1 20021205; CN 1249125 C 20060405; CN 1535291 A 20041006; DE 10126133 A1 20030102; DE 10126133 B4 20070329; EP 1406948 A1 20040414; RU 2003137774 A 20050520; RU 2295545 C2 20070320; UA 76471 C2 20060815
DOCDB simple family (application)
EP 0205441 W 20020517; CN 02814690 A 20020517; DE 10126133 A 20010529; EP 02738083 A 20020517; RU 2003137774 A 20020517; UA 20031212941 A 20020517