EP 0019963 B1 19821215 - PROCESS FOR THE DELIGNIFICATION AND BLEACHING OF CHEMICAL AND SEMICHEMICAL CELLULOSE PULPS
Title (en)
PROCESS FOR THE DELIGNIFICATION AND BLEACHING OF CHEMICAL AND SEMICHEMICAL CELLULOSE PULPS
Publication
Application
Priority
FR 7913554 A 19790525
Abstract (en)
[origin: ES8102237A1] A process for the delignification and bleaching of chemical and semi-chemical cellulosic pulps in which the pulp is subjected to a treatment with oxygen and a subsequent treatment with peroxide. The effluent from the treatment with peroxide is at least partially recycled to the treatment with oxygen.
IPC 1-7
IPC 8 full level
D21C 9/10 (2006.01)
CPC (source: EP US)
D21C 9/1057 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0019963 A1 19801210; EP 0019963 B1 19821215; AT E2018 T1 19821215; DE 3061330 D1 19830120; ES 491799 A0 19801216; ES 8102237 A1 19801216; FR 2457339 A1 19801219; FR 2457339 B1 19820917; US 4459174 A 19840710
DOCDB simple family (application)
EP 80200450 A 19800514; AT 80200450 T 19800514; DE 3061330 T 19800514; ES 491799 A 19800523; FR 7913554 A 19790525; US 40038082 A 19820721