EP 0421843 B1 19941214 - Process for treating a papermaking pulp with an enzymatic preparation to make paper or cardboard.
Title (en)
Process for treating a papermaking pulp with an enzymatic preparation to make paper or cardboard.
Title (de)
Verfahren zur Behandlung von Zellstoff mit einer Enzymzubereitung für die Papier- und Pappeherstellung.
Title (fr)
Procédé de traitement d'une pâte papetière par une préparation enzymatique pour la fabrication de papier ou de carton.
Publication
Application
Priority
FR 8912823 A 19891002
Abstract (en)
[origin: EP0421843A1] The invention relates to a process for treating a papermaking pulp with an enzymatic preparation. <??>According to the process, an enzymatic preparation containing cellulases and/or hemicellulases, chosen from those derived from the fungus Humicola insolens and from the bacterium Cellulomonas, is reacted with an aqueous suspension of the abovementioned pulp possessing a number of degrees Schopper-Riegler (SR), determined in accordance with Standard NFQ 50 003, equal to at least 25. <??>Application of the process for treating a papermaking pulp based on recycled fibres, possessing a pH equal to at least 5. <IMAGE>
IPC 1-7
IPC 8 full level
C12N 9/42 (2006.01); C12S 3/08 (2006.01); D21C 5/00 (2006.01); D21C 5/02 (2006.01); D21C 9/00 (2006.01); C12R 1/645 (2006.01)
CPC (source: EP US)
D21C 5/005 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0421843 A1 19910410; EP 0421843 B1 19941214; AT E115661 T1 19941215; CA 2026652 A1 19910403; DE 69015095 D1 19950126; DE 69015095 T2 19950727; ES 2068360 T3 19950416; FI 101722 B1 19980814; FI 101722 B 19980814; FI 904843 A0 19901001; FR 2652595 A1 19910405; FR 2652595 B1 19950331; GR 3015285 T3 19950630; JP H03124891 A 19910528; NO 176617 B 19950123; NO 176617 C 19950503; NO 904266 D0 19901001; NO 904266 L 19910403; US 5116474 A 19920526
DOCDB simple family (application)
EP 90402657 A 19900927; AT 90402657 T 19900927; CA 2026652 A 19901001; DE 69015095 T 19900927; ES 90402657 T 19900927; FI 904843 A 19901001; FR 8912823 A 19891002; GR 950400463 T 19950303; JP 25755190 A 19900928; NO 904266 A 19901001; US 59126890 A 19901001