EP 1315855 A1 20030604 - METHOD AND DEVICE FOR THE CONTINUOUS, SINGLE-STEP PRODUCTION OF A HOMOGENEOUS SOLUTION OF CELLULOSE IN HYDROUS TERTIARY AMINOXIDES
Title (en)
METHOD AND DEVICE FOR THE CONTINUOUS, SINGLE-STEP PRODUCTION OF A HOMOGENEOUS SOLUTION OF CELLULOSE IN HYDROUS TERTIARY AMINOXIDES
Title (de)
VERFAHREN UND VORRICHTUNG ZUR KONTINUIERLICHEN, EINSTUFIGEN HERSTELLUNG EINER HOMOGENEN LÖSUNG VON CELLULOSE IN WASSERHALTIGEN TERTIÄREN AMINOXIDEN
Title (fr)
PROCEDE ET DISPOSITIF POUR LA PRODUCTION EN CONTINU, EN UNE SEULE ETAPE, D'UNE SOLUTION HOMOGENE DE CELLULOSE DANS DES OXYDES D'AMINES TERTIAIRES CONTENANT DE L'EAU
Publication
Application
Priority
DE 0003035 W 20000905
Abstract (en)
[origin: WO0220885A1] The invention relates to a method and to a device for the continuous, single-step production of a homogeneous solution of cellulose in hydrous aminoxides on the basis of cellulose and aqueous aminoxides, preferably N-methylmorpholino-N-oxide (NMMO), at temperatures in the range of from 50 to 130 DEG C under a vacuum and water evaporation. The cellulose and the NMMO are dosed separately to the device, mixed while sheared, the water is evaporated until the mixture is dissolved, the solution is homogenized and directly fed to the consumer via screw conveyors, pumps and filters.
IPC 1-7
IPC 8 full level
D01F 2/00 (2006.01); C08B 1/00 (2006.01); C08J 3/09 (2006.01); C08J 3/11 (2006.01); D01D 1/02 (2006.01)
CPC (source: EP US)
C08B 1/003 (2013.01 - EP US); D01D 1/02 (2013.01 - EP US); D01F 2/00 (2013.01 - EP US)
Citation (search report)
See references of WO 0220885A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0220885 A1 20020314; CA 2427478 A1 20030304; CN 1211508 C 20050720; CN 1454267 A 20031105; EP 1315855 A1 20030604; US 6875756 B1 20050405
DOCDB simple family (application)
DE 0003035 W 20000905; CA 2427478 A 20000905; CN 00819870 A 20000905; EP 00972575 A 20000905; US 36319203 A 20030630