METHOD FOR MANUFACTURING OF A HYDROPHOBIC CELLULOSIC MATERIAL

The invention relates to a process for manufacturing a hydrophobic cellulosic material, which comprises the steps of (a) providing a cellulosic material, which is based on cellulosic fibers, wherein the fibers possess hydroxyl groups at their surface; (b) reacting the material from step (a) with an...

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Bibliographische Detailangaben
Hauptverfasser:	KROENER, Hubertus, WENGELER, Lukas, GATTERMAYER, Jochen, EICHHOLZ, Christian
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DERIVATIVES THEREOF GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS IMPREGNATING OR COATING OF PAPER METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING POLYSACCHARIDES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	The invention relates to a process for manufacturing a hydrophobic cellulosic material, which comprises the steps of (a) providing a cellulosic material, which is based on cellulosic fibers, wherein the fibers possess hydroxyl groups at their surface; (b) reacting the material from step (a) with an aliphatic carboxylic acid chloride or a mixture, which comprises aliphatic carboxylic acid chlorides, in supercritical carbon dioxide; (c) separating the reacted material from step (b) from the reaction to obtain the hydrophobic cellulosic material. L'invention concerne un procédé de fabrication d'un matériau cellulosique hydrophobe, qui comprend les étapes suivantes consistant à : (a) fournir un matériau cellulosique qui est basé sur des fibres cellulosiques, les fibres possédant des groupes hydroxyles au niveau de leur surface ; (b) faire réagir le matériau de l'étape (a) avec un chlorure d'acide carboxylique aliphatique ou un mélange, qui comprend des chlorures d'acide carboxylique aliphatiques, dans du dioxyde de carbone supercritique ; (c) séparer le matériau ayant subi la réaction de l'étape (b) à partir de la réaction pour obtenir le matériau cellulosique hydrophobe.