FREMGANGSMAATE FOR FREMSTILLING AV ET ALKALIOPPLOESELIG CELLULOSEKARBAMAT

FREMGANGSMAATE FOR FREMSTILLING AV ET ALKALIOPPLOESELIG CELLULOSEKARBAMAT

An alkali-soluble cellulose derivative is produced by treating cellulose with liquid ammonia having urea dissolved therein, removing the ammonia, resulting in cellulose having urea distributed therethrough, and heating the thus obtained cellulose-urea to cause reaction between the urea and cellulose...

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Hauptverfasser: HUTTUNEN, JOUKO, TURUNEN, OLLI, EKMAN, KURT, MANDELL, LEO, EKLUND, VIDAR
Format: Patent
Sprache:nor
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CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator HUTTUNEN, JOUKO
TURUNEN, OLLI
EKMAN, KURT
MANDELL, LEO
EKLUND, VIDAR
description An alkali-soluble cellulose derivative is produced by treating cellulose with liquid ammonia having urea dissolved therein, removing the ammonia, resulting in cellulose having urea distributed therethrough, and heating the thus obtained cellulose-urea to cause reaction between the urea and cellulose and form alkali-soluble cellulose carbamate. This cellulose carbamate can be precipitated from alkaline solution in the form of cellulose carbamate film or fibre.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
THEIR PREPARATION OR CHEMICAL WORKING-UP
title FREMGANGSMAATE FOR FREMSTILLING AV ET ALKALIOPPLOESELIG CELLULOSEKARBAMAT
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