EP 1478802 A2 20041124 - METHOD FOR OZONE TREATMENT OF USED PAPER
Title (en)
METHOD FOR OZONE TREATMENT OF USED PAPER
Title (de)
OZONEBEHANDLUNG VON ALTPAPIEREN
Title (fr)
PROCEDE DE TRAITEMENT DE PAPIERS USES PAR L'OZONE
Publication
Application
Priority
- FR 0300460 W 20030213
- FR 0202062 A 20020218
Abstract (en)
[origin: WO03071024A2] The invention concerns a novel method for ozone treatment of used paper which consists in transforming used paper into pulp in an aqueous medium, screening then de-inking said paper by liquid flotation, the method further comprising an ozone treatment step carried out at latest prior to the liquid flotation step.
IPC 1-7
IPC 8 full level
D21C 5/02 (2006.01); D21C 9/153 (2006.01)
CPC (source: EP US)
D21C 5/02 (2013.01 - EP US); D21C 9/153 (2013.01 - EP US); Y02W 30/64 (2015.05 - EP US)
Citation (search report)
See references of WO 03071024A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03071024 A2 20030828; WO 03071024 A3 20040325; AU 2003222375 A1 20030909; AU 2003222375 A8 20030909; CA 2475689 A1 20030828; EP 1478802 A2 20041124; FR 2836162 A1 20030822; FR 2836162 B1 20040507; JP 2005517834 A 20050616; US 2005155729 A1 20050721
DOCDB simple family (application)
FR 0300460 W 20030213; AU 2003222375 A 20030213; CA 2475689 A 20030213; EP 03717397 A 20030213; FR 0202062 A 20020218; JP 2003569908 A 20030213; US 50480604 A 20040816