CONTINUOUS PROCESS FOR PRODUCTION OF POLYAMIDES

• Main Authors: JUERGEN DEININGER, GAD KORY, JUERGEN DEMETER, THILO HAHN, OLIVER SOETJE, PETER ZEHNER
• Format: Patent
• Language: English
• Published: 28.11.2008
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP

A CONTINUOUS PROCESS FOR PRODUCING POLYAMIDES, THEIR OLIGOMERS OR MIXTURES THEREOF, IF APPROPRIATE WITH FURTHER REACTION PRODUCTS, COMPRISES REACTION OF AMINONITRILES OR DINITRILES AND DIAMINES OR MIXTURES THEREOF, IF APPROPRIATE TOGETHER WITH FURTHER POLYAMIDE-FORMING MONOMERS AND/OR OLIGOMERS, WITH AN AQUEOUS MEDIUM COMPOSED OF AQUEOUS MONOMER AND OLIGOMER EXTRACTS OBTAINED FROM POLYAMIDE PRODUCTION BY EXTRACTION OF THE POLYMER WITH WATER IN A REACTOR WHICH HAS A VERTICAL LONGITUDINAL AXIS AND THROUGH WHICH THERE IS A FLOW SUBSTANTIALLY IN THE LONGITUDINAL DIRECTION WHEREIN WATER AND/OR THE AQUEOUS MEDIUM ARE INTRODUCED INTO THE REACTOR AT TWO OR MORE DIFFERENT LOCATIONS ALONG THE VERTICAL LONGITUDINAL AXIS, WHEREIN THE AQUEOUS MEDIUM IS INTRODUCED AT ONE OR MORE LOCATIONS.