Method for emergency shutdown of gas phase polyolefin reactor

Details Method for emergency shutdown of gas phase polyolefin reactor Method for emergency shutdown of gas phase polyolefin reactor

1980-05-27

1982-04-20

Henderson, C. A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Removing and recycling removed material from an ongoing...

526 84, 526351, 528483, 528490, C08F 234, C08F 242, C08F 1006

Patent

active

043260489

ABSTRACT:
In a gas phase olefin polymerization using a transition metal compound/aluminum alkyl catalyst system, polymerization can be terminated rapidly by injecting an amount of carbon oxide and then restarting efficiently by addition of an amount of aluminum alkyl.

REFERENCES:
patent: 2910461 (1959-10-01), Nowlin et al.
patent: 3269997 (1966-08-01), Lyons et al.
patent: 3700710 (1972-10-01), Mottus
patent: 3708465 (1973-01-01), Dietrich
patent: 4130699 (1978-12-01), Hoff
Raff & Doak, "Crystalline Olefin Polymers," Interscience Pubs., p. 371.
Vesely et al., Journal of Polymer Science, vol. 55, pp. 22-32, (1961).
Zakharov et al., Die Makromolekulare Chemie, vol. 175, pp. 3035-3040, (1974).
Mejzlik et al., Die Makromolekulare Chemie, vol. 178, pp. 261-266, (1977).

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