Method for improving quality and reactivity of cellulose

The invention relates to the production technology of cellulose products with improved characteristics and enhanced reactivity, and can be used in chemical processing of cellulose, including processing of batches already made, for producing nitrocellulose and other products. The method for improving...

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Hauptverfasser: VATUEVA OLGA BORISOVNA, GUKASOV NIKOLAY ALEKSANDROVICH, ZALEVSKY VIKTOR MIHAILOVICH, TAMURKA VITALY GRIGOREVICH, VOLODIN VENIAMIN SERGEEVICH, MARSHANNIKOVA LIUDMILA MIKHAILOVNA, VESELOV VLADIMIR MIHAILOVICH, ABRAMOV YAKOV KUZMICH
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention relates to the production technology of cellulose products with improved characteristics and enhanced reactivity, and can be used in chemical processing of cellulose, including processing of batches already made, for producing nitrocellulose and other products. The method for improving quality and reactivity of cellulose consists in activation of cellulose by subjecting thereof to the following steps: impregnating and hydrolysing cellulose in a hydrolysis solution medium, filtering the cellulose from the hydrolysis solution, and washing, pressing and drying thereof. Moreover, thesteps of impregnating and hydrolysing cellulose in a hydrolysis solution medium, filtering the cellulose from the hydrolysis solution, washing, pressing and drying are performed with a simultaneous exposure to cycles of thermal vacuum impulse action, wherein each cycle comprises heating cellulose to a temperature below 115 C, rapid-impact impulse action of a vacuum for a time period of less than10 seconds, followed by ma