EP 2406425 A1 20120118 - METHOD AND CHEMICAL COMPOSITION TO IMPROVE EFFICIENCY OF MECHANICAL PULP
Title (en)
METHOD AND CHEMICAL COMPOSITION TO IMPROVE EFFICIENCY OF MECHANICAL PULP
Title (de)
VERFAHREN UND CHEMISCHE ZUSAMMENSETZUNG ZUR VERBESSERUNG DER SUBSTANZAUSNUTZUNG VON HOLZSTOFF
Title (fr)
PROCÉDÉ ET COMPOSITION CHIMIQUE POUR AMÉLIORER LE RENDEMENT DE PÂTE MÉCANIQUE
Publication
Application
Priority
- US 2010026148 W 20100304
- US 40032609 A 20090309
Abstract (en)
[origin: US2010224333A1] The invention provides a composition of matter and a method, which enhance the process of mechanically pulping paper precursors. The composition of matter includes a small quantity of a reducing agent and a source of alkali. When added to the pulped material, e.g., wood chips, before or during mechanical pulping, the composition reduces the energy cost of the operation. In addition, not only does the composition also does not reduce the brightness of pulp, the composition can also enhance the effectiveness of subsequent bleaching processes.
IPC 8 full level
CPC (source: EP KR US)
D21B 1/021 (2013.01 - EP US); D21B 1/04 (2013.01 - EP US); D21C 1/06 (2013.01 - EP US); D21H 17/64 (2013.01 - KR); D21H 21/10 (2013.01 - KR); D21H 21/14 (2013.01 - KR); D21H 21/32 (2013.01 - KR); D21C 9/1042 (2013.01 - EP US); D21C 9/163 (2013.01 - EP US)
Citation (search report)
See references of WO 2010104725A1
Designated contracting state (EPC)
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)
US 2010224333 A1 20100909; BR PI1009542 A2 20160322; BR PI1009542 B1 20200602; CA 2753944 A1 20100916; CA 2753944 C 20181002; CN 102348848 A 20120208; EP 2406425 A1 20120118; EP 2406425 B1 20191002; JP 2012519785 A 20120830; JP 5669762 B2 20150218; KR 101718557 B1 20170321; KR 20110128915 A 20111130; RU 2011135609 A 20130420; RU 2530386 C2 20141010; WO 2010104725 A1 20100916
DOCDB simple family (application)
US 40032609 A 20090309; BR PI1009542 A 20100304; CA 2753944 A 20100304; CN 201080011828 A 20100304; EP 10706889 A 20100304; JP 2011554084 A 20100304; KR 20117023702 A 20100304; RU 2011135609 A 20100304; US 2010026148 W 20100304