Alumina-based adsorbents for the purification of polyolefins

Details Alumina-based adsorbents for the purification of polyolefins Alumina-based adsorbents for the purification of polyolefins

1990-12-21

1994-02-22

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528485, 528488, 528489, C08F 608

Patent

active

052888495

ABSTRACT:
Alumina-based adsorbents containing at least one compound of an alkali or alkaline earth metal, wherein the alkali or alkaline earth metal values are present in an amount ranging from 15 mmole to 100 mmole per 100 g of alumina, are useful for the adsorptive purification of polyolefins prepared by the polymerization of olefins in the presence of a metallic coordination catalyst, to remove contaminating catalyst metal values therefrom with but negligible monomer/solvent isomerization.

REFERENCES:
patent: 3631163 (1971-12-01), Witt
patent: 3962199 (1976-06-01), Citron
patent: 4493715 (1985-01-01), Hogan et al.

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