Process for preventing or reducing deposits and clogging in the continuous polymerization and copolymerization of olefins by the

Abstract

Abstract VESSEL AND INTRODUCED INTO ANOTHER VESSEL TOGETHER WITH THE LIQUID REACTION MIXTURE TO COMPLETE THE POLYMERIZATION. THE GAS SPACE IN THE POLYMERICATION VESSEL IS MAINTAINED AS SMALL AND, ESPECIALLY, AS CONSTANT AS POSSIBLE BY THE GEOMETRY OF THE APPARATUS AND SIPHORNING-OVER OF THE LIQUID RECTION MIXTURE IS MOREOVER PREVENTED. THE PRESENT INVENTION RELATES TO A PROCESS FOR PREVENTING OR REDUCING DEPOSITS AND CLOGGING IN THE CONTINUOUS POLYMERIZATION AND COPOLYMERIZATION OF OLEFINS BY THE LOW PRESSURE PROCESS, ESPECIALLY WHEN PARTIALLY WAX-LIKE OR STICKY PRODUCTS ARE OBTAINED, IN AN APPARATUS COMPRISING AT LEAST ONE MAIN POLYMERIZATION VESSEL AND AT LEAST ONE CONTINUED-POLYMERIZATION VESSEL CONNECTED IN SERIES, BOTH BEING CONNECTED BY A SYSTEM OF DEFINITELY ARRANGED GAS OUTLET AND REACTION MIXTURE DISCHARGE PIPES. THE PORTION OF THE MONOMER OR MONOMER MIXTURE, WHICH DOES NOT REACT UNDER THE POLYMERIZATION CONDITIONS IS CONTINUOUSLY WITHDRAWN FROM THE GAS SPACE OF THE MAIN POLYMERIZATION

Inventors

• 👤 Franz Zapf
• 👤 Wilhelm Dummer
• 👤 Gunther Lehmann

Bibliographic Details