Patent ID: 6479719
Filing Date: 2002-11-12
Classification: B01J,C07C

Abstract:
In a process for the manufacture of norbornene from dicyclopentadiene (DCPD) and ethylene, the improvement comprising subjecting the DCPD to partial monomerization to CPD by preliminary preheating:at a temperature of 140Â° C. to 240Â° C.; and under a pressure of 20 to 300 bar abs., before reacting the DCPD with the ethylene, the reaction with ethylene being conducted thereafter; with an ethylene/DCPD molar ratio of 1 to 20; at a temperature of 200Â° C. to 320Â° C.; under a pressure of 20 to 300 bar abs.; and with a residence time of 1 to 10 minutes, under stable reaction conditions between the DCPD, the CPD and the ethylene.