EP 2435628 B1 20140409 - PROCESS FOR THE BLEACHING OF MECHANICAL PAPER PULP
Title (en)
PROCESS FOR THE BLEACHING OF MECHANICAL PAPER PULP
Title (de)
VERFAHREN ZUM BLEICHEN MECHANISCHER PAPIERPULPE
Title (fr)
PROCÉDÉ DE BLANCHISSEMENT DE PÂTE À PAPIER MÉCANIQUE
Publication
Application
Priority
- EP 2010057372 W 20100528
- EP 09161461 A 20090529
- EP 10724373 A 20100528
Abstract (en)
[origin: WO2010136550A1] The invention relates to a process for the bleaching of paper pulp with one or more peroxide oxidizing agents, in which the pulp is first treated in a pretreatment step with at least one inorganic magnesium derivative combined with at least one carboxylic acid or its salt, except its magnesium salt, or with at least one carboxylic acid at least partially saponified with Mg2+, the carboxylic acid being substituted by at least one electrodonating group or comprising at least one carbon-carbon double bond.
IPC 8 full level
D21C 9/00 (2006.01); D21C 9/10 (2006.01); D21C 9/16 (2006.01)
CPC (source: CN EP US)
D21C 9/00 (2013.01 - CN EP US); D21C 9/10 (2013.01 - CN EP US); D21C 9/1042 (2013.01 - CN EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010136550 A1 20101202; BR PI1016066 A2 20160607; CA 2762712 A1 20101202; CA 2762712 C 20170829; CL 2011003017 A1 20120518; CN 102449234 A 20120509; CN 105442372 A 20160330; EP 2435628 A1 20120404; EP 2435628 B1 20140409; MY 154626 A 20150715; PL 2435628 T3 20140930; US 2012061043 A1 20120315
DOCDB simple family (application)
EP 2010057372 W 20100528; BR PI1016066 A 20100528; CA 2762712 A 20100528; CL 2011003017 A 20111129; CN 201080023672 A 20100528; CN 201510789210 A 20100528; EP 10724373 A 20100528; MY PI2011005702 A 20100528; PL 10724373 T 20100528; US 201013321256 A 20100528