EP 0509905 B1 19960710 - Process for producing high yield bleached pulp
Title (en)
Process for producing high yield bleached pulp
Title (de)
Verfahren zur Herstellung von gebleichtem Hochausbeutepapierzellstoff
Title (fr)
Procédé de préparation de pâte à papier à haut rendement et blanchie
Publication
Application
Priority
FR 9104737 A 19910417
Abstract (en)
[origin: EP0509905A1] Manufacture of high-yield paper pulp from wood chips. The process consists in successively treating the chips, before grinding, with a solution containing at least one reducing agent, and then with an alkaline hydrogen peroxide solution. Application to the manufacture of paper pulp with a high degree of whiteness and good mechanical characteristics.
IPC 1-7
IPC 8 full level
D21B 1/02 (2006.01); D21C 9/00 (2006.01); D21C 9/10 (2006.01); D21C 9/16 (2006.01)
CPC (source: EP)
D21B 1/021 (2013.01); D21C 9/1005 (2013.01); D21C 9/163 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0509905 A1 19921021; EP 0509905 B1 19960710; AT E140283 T1 19960715; AU 1489792 A 19921022; AU 650962 B2 19940707; CA 2066316 A1 19921018; CA 2066316 C 19990928; DE 69212051 D1 19960814; DE 69212051 T2 19970123; ES 2089436 T3 19961001; FI 921671 A0 19920414; FI 921671 A 19921018; FR 2675518 A1 19921023; FR 2675518 B1 19961018; IE 75202 B1 19970827; IE 921176 A1 19921021; JP 2588495 B2 19970305; JP H06220788 A 19940809; NO 300225 B1 19970428; NO 921335 D0 19920406; NO 921335 L 19921019; NZ 242356 A 19940627
DOCDB simple family (application)
EP 92401044 A 19920414; AT 92401044 T 19920414; AU 1489792 A 19920414; CA 2066316 A 19920416; DE 69212051 T 19920414; ES 92401044 T 19920414; FI 921671 A 19920414; FR 9104737 A 19910417; IE 921176 A 19920413; JP 12009392 A 19920414; NO 921335 A 19920406; NZ 24235692 A 19920414