Process for producing olefin polymer

Details Process for producing olefin polymer Process for producing olefin polymer

2011-03-01

2011-03-01

Teskin, Fred M (Department: 1762)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S086000, C526S905000

Reexamination Certificate

active

07897705

ABSTRACT:
The purpose of the present invention is to provide a process for producing an olefin polymer, which can produce an olefin polymer having a higher molecular weight by lowering hydrogen concentration efficiently in polymerizing an olefin in the presence of hydrogen by use of a gas phase reaction vessel. There is provided a process for producing an olefin polymer comprising the steps of: using a gas phase reaction vessel; polymerizing an olefin by use of a catalyst for olefin polymerization in the presence of hydrogen; and adding a hydrogenation catalyst to a bed portion in the gas phase reaction vessel.

REFERENCES:
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patent: 4851488 (1989-07-01), Burstain
patent: 4980421 (1990-12-01), Teramoto et al.
patent: 5194529 (1993-03-01), McCullough et al.
patent: 8-151408 (1996-06-01), None
patent: 10-204123 (1998-08-01), None

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