EP 0087553 B1 19860730 - PROCESS FOR PRODUCING HALF-BLEACHED CELLULOSE PULPS
Title (en)
PROCESS FOR PRODUCING HALF-BLEACHED CELLULOSE PULPS
Publication
Application
Priority
DE 3207157 A 19820227
Abstract (en)
[origin: EP0087553A1] 1. A process for the production of half-bleached cellulose pulps by applying excess oxygen pressure, hydrogen peroxide and sodium silicate in an aqueous alkaline suspension, characterised in that for bleaching and partial delignification, oxygen, hydrogen peroxide and sodium silicate are simultaneously allowed to act on the cellulose pulp.
IPC 1-7
IPC 8 full level
CPC (source: EP)
D21C 9/10 (2013.01); D21C 9/1068 (2013.01); D21C 9/163 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0087553 A1 19830907; EP 0087553 B1 19860730; AT E21133 T1 19860815; DE 3207157 C1 19830609; DE 3364788 D1 19860904; FI 824295 A0 19821214; FI 824295 L 19830828; NO 824357 L 19830829
DOCDB simple family (application)
EP 83100115 A 19830108; AT 83100115 T 19830108; DE 3207157 A 19820227; DE 3364788 T 19830108; FI 824295 A 19821214; NO 824357 A 19821223