Amoco Corporation

Standard Oil Company (indiana)

Jack F Stevens

Chi-Hung Lin

Philip M Rose

Benjamin S Tovrog

David R Kreider

Kwok-fu Lee

The process and the system are used for carrying out the quench-cooled, vapor-phase polymerization of olefin monomer in a horizontally disposed reactor vessel which comprises contacting olefin monomer, or a mixture of olefin monomers, with a polymerization catalyst system in the presence of hydrogen in the reactor vessel to form a polymer product. The improvement comprises introducing a titanium-containing catalyst component of the catalyst system into the top side of the reactor vessel at a point adjacent to the upstream end of the reactor vessel and introducing a cocatalyst plus modifer component of the catalyst system into the top side of the reactor vessel at a distance, downstream of the point of introduction of the titanium-containing catalyst component, which is equal to 25% of the inside diameter of the reactor vessel.

Method and apparatus for minimizing polymer agglomerate or lump

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.

Method for emergency shutdown of gas phase polyolefin reactor

Growing community of inventors

Naperville, IL, United States of America

Jack F Stevens