Process and means for the purification of cellulose ethers

Details Process and means for the purification of cellulose ethers Process and means for the purification of cellulose ethers

1988-08-31

1990-11-06

Kight, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

210348, 210367, 210374, C08B 3700, B01D 3522, B01D 3300

Patent

active

049687891

ABSTRACT:
Process and means for purifying cellulose ethers without flocculation points or with relatively high flocculation points (up to 95.degree. C.) and thermoplastic, i.e. highly propoxylated, products made from cellulose in any form, the crude product is first suspended and the suspension liquid subsequently separated in a reverse filter centrifuge a single-stage or multistage wash can be carried out. The filter cake is discharged by reversal of the filter cloth of the centrifuge.

REFERENCES:
patent: 3900313 (1975-08-01), Martin
patent: 4398024 (1983-08-01), Bernert et al.
patent: 4447406 (1984-05-01), Mein

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