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GB13286/20A
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Publication of GB149318ApublicationCriticalpatent/GB149318A/en
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
C08B1/08—Alkali cellulose
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Engineering & Computer Science
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Biochemistry
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Materials Engineering
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Chemical Kinetics & Catalysis
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Polysaccharides And Polysaccharide Derivatives
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Abstract
Alkali cellulose containing little water and an excess of caustic alkali, more particularly for use in the manufacture of cellulose ethers, is prepared by impregnating cellulose or cellulose-containing materials with caustic alkali lye or with water, drying as far as possible by pressing or by treatment in suction apparatus or a centrifuge &c., and then mixing with solid caustic alkali, preferably in the form of powder or with a highly concentrated caustic alkali lye. The powdered caustic alkali may be added in one portion or gradually, and with constant stirring, kneading, shredding, &c., and if necessary with cooling; and the dried material before the addition of the alkali may be finely divided, for instance in a willowing machine, edge-runner, or shredder, also advantageously with cooling.
GB13286/20A1919-08-011920-05-13Improvements in and relating to manufacture of alkali cellulose
ExpiredGB149318A
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