Method for drying vapor phase reaction system

Details Method for drying vapor phase reaction system Method for drying vapor phase reaction system

1993-12-28

1996-07-30

Weber, Thomas R.

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

Synthetic resins

Polymerizing in reactor of specified material, or in reactor...

526348, 526901, C08F 234

Patent

active

055412696

ABSTRACT:
In the polymerization of olefins using a catalyst comprising an organoaluminum compound and solid catalyst components containing titanium and/or vanadium; and magnesium in a vapor phase fluidized bed, the formation of sheet-like polymer and other abnormal conditions in the initial stage of the polymerization are avoided by means of previous drying of the reactor by feeding an organoaluminum compound prior to the feeding of seed polymer, the quantity of said organoaluminum compound being calculated by the following equation (I):

REFERENCES:
patent: 3708465 (1973-01-01), Dietrich et al.
patent: 4035560 (1977-07-01), Caumartin et al.
patent: 4326048 (1982-04-01), Stevens et al.
patent: 4532311 (1985-07-01), Fulks et al.
patent: 5077358 (1991-12-01), Durand et al.

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