Methods of activating chromium catalysts

Details Methods of activating chromium catalysts Methods of activating chromium catalysts

B - Operations, Transporting

01

J

B01J 38/02 (2006.01) B01J 23/26 (2006.01) B01J 38/04 (2006.01) C08F 4/24 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2566441

New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature is followed by a first hold period before heating to a higher second temperature and maintaining the second temperature for a second hold period. In one aspect, the overall activation process takes less than 10 hours.

Nouvelles méthodes pour activer les catalyseurs au chrome afin que les processus de polymérisation abaissent le temps requis pour l'activation et augmentent l'activité de catalyse. Un chauffage rapide à une première température est suivi d'une première période d'attente avant un chauffage à une température plus élevée et le maintien de la deuxième température pendant une deuxième période d'attente. Pour un aspect, le processus d'activation global prend moins de 10 heures.

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