Title:
SEPARATION PURIFICATION FOR MIXTURE CONTAINING WATER, WATER-SOLUBLE SALT, GLYCOLATE ION AND ORGANIC SOLVENT AND TREATMENT OF LIQUID REACTION MEDIUM AND/OR DETERGENT MEDIUM FROM POLYSACCHARIDE ETHER MANUFACTURING PROCESS
Document Type and Number:
Japanese Patent JPS57192332
Kind Code:
A
Abstract:
A process for purifying or working-up a mixture containing water, water-soluble salts, organic ions and organic solvents, particularly mixtures of water, NaCl, Na glycolate and aliphatic alcohols such as methanol or isopropanol, by separating the mixture into its components using acidic and/or basic ion exchangers, in particular, using weakly basic anion exchangers after optionally adjusting the pH of the mixture to an acid value. The process is especially suited for purifying liquid reaction media and/or washing media from the production of polysaccharides, such as cellulose ethers or starch ethers containing sodium-carboxymethyl group substituents, which are prepared from polysaccharides, an alkali metal hydroxide and monochloroacetate ions in a medium containing water and at least one organic solvent.
Inventors:
EEBERUHARUTO PERUPURIISU
Application Number:
JP7928882A
Publication Date:
November 26, 1982
Filing Date:
May 13, 1982
Export Citation:
Assignee:
HOECHST AG
International Classes:
C07C51/00; C07C51/47; C07C59/06; C02F1/42; C07C67/00; C08B11/12; C08B11/20; C08B31/12; (IPC1-7): C02F1/42; C07C51/42; C07C59/06
Domestic Patent References:
| JPS49124025A | 1974-11-27 |