Method and apparatus for minimizing polymer agglomerate or lump

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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526901, 526919, 422131, C08F 234

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active

049219197

ABSTRACT:
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.

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patent: 3957448 (1976-05-01), Shepard et al.
patent: 4130699 (1978-12-01), Hoff et al.
patent: 4535134 (1985-08-01), de Lorenzo et al.
patent: 4665143 (1987-05-01), Ahluwalia et al.

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