Alcohol purification process

Details Alcohol purification process Alcohol purification process

1975-02-24

1976-02-17

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 949F, 260643R, 260643E, 423 69, 423111, C07C 2924

Patent

active

039392171

ABSTRACT:
In the clean-up and recovery of isopropanol used to deash polypropylene prepared by the polymerization of propylene in the presence of a TiCl.sub.3.AlCl.sub.3 catalyst, the neutralized bottoms from the first stage of a two stage evaporization of isopropanol are deashed by adding a small quantity of water, which causes flocculation of a substantial portion of the ash in the bottoms which are separated from liquids in the system by centrifuging, with the centrate going to the second stage evaporization in which substantially only amorphous polypropylene is left as bottoms.

REFERENCES:
patent: 2080064 (1937-05-01), Roelfsema
patent: 2891633 (1959-06-01), Morro et al.
patent: 3208987 (1965-09-01), Reid et al.

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