Water treatment method for resin in a purge vessel

Details Water treatment method for resin in a purge vessel Water treatment method for resin in a purge vessel

1986-12-30

1988-03-15

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528499, C08F 602

Patent

active

047314389

ABSTRACT:
The deactivation of Ziegler-Natta catalyst and organometallic cocatalyst residues present in the olefin polymer resins produced by the fluidized bed polymerization process is accomplished in a purge vessel by contacting the olefin polymer resin with an inert purge gas containing water the latter being present in said inert purge gas in an amount to establish and maintain a moisture front region in the resin bed of said purge vessel as to create a region above said moisture front substantially free of water and wherein deactivation of said catalyst and cocatalyst are effected in said moisture front region.

REFERENCES:
patent: 2918461 (1959-12-01), Flynn
patent: 4029877 (1977-06-01), Yoshiura et al.
patent: 4278788 (1981-07-01), Hatfield et al.
patent: 4314053 (1982-02-01), Lin et al.
patent: 4332933 (1982-06-01), DiDrusco et al.
patent: 4372758 (1983-02-01), Bobst et al.

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