Process for the gas phase polymerization of olefins

Details Process for the gas phase polymerization of olefins Process for the gas phase polymerization of olefins

2005-05-10

2005-05-10

Cheung, William K. (Department: 1713)

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

Synthetic resins

Removing and recycling removed material from an ongoing...

C526S106000, C526S116000, C526S348000, C526S348500, C526S348600, C526S352000, C526S901000, C526S905000

Reexamination Certificate

active

06891001

ABSTRACT:
A process for preparing and controlling the density of high density polyethylene in the gas phase comprising contacting ethylene or a mixture of ethylene and one or more alpha-olefins with a chromium oxide catalyst supported on a granular or microspherical refractory oxide in a fluidized bed reactor in the presence of oxygen.

REFERENCES:
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patent: 0 275 675 (1988-07-01), None
patent: 0 640 625 (1995-03-01), None
patent: WO 9909075 (1999-02-01), None
patent: WO 9912978 (1999-03-01), None
patent: WO 9912982 (1999-03-01), None
patent: WO9912982 (1999-03-01), None

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