EP 0663030 A4 19951206 - IMPROVED BLEACHING OF HIGH CONSISTENCY LIGNOCELLULOSIC PULP.
Title (en)
IMPROVED BLEACHING OF HIGH CONSISTENCY LIGNOCELLULOSIC PULP.
Title (de)
VERBESSERTES BLEICHEN VON HOCHKONSISTENZ-ZELLSTOFF.
Title (fr)
BLANCHIMENT AMELIORE DE PATE DE LIGNOCELLULOSE D'UN NIVEAU DE CONSISTANCE ELEVE.
Publication
Application
Priority
- US 9309230 W 19930928
- US 95500192 A 19921001
- US 2754493 A 19930305
Abstract (en)
[origin: WO9408087A1] The present invention pertains to a method having increased selectivity for bleaching lignocellulosic pulp having a high consistency from a first GE brightness to a second, higher GE brightness which comprises the steps of (a) fluffing the high consistency pulp having the first GE brightness to a specific surface area of at least about 90m2/kg; and (b) contacting the fluffed pulp with a gaseous bleaching agent to form a bleached pulp having the second, higher GE brightness. The present invention also pertains to a bleached lignocellulosic pulp prepared by the method of the present invention.
IPC 1-7
IPC 8 full level
D21C 9/153 (2006.01); D21C 9/00 (2006.01); D21C 9/147 (2006.01)
CPC (source: EP KR)
D21C 9/007 (2013.01 - EP KR); D21C 9/153 (2013.01 - EP KR)
Citation (search report)
- [Y] WO 9118145 A1 19911128 - UNION CAMP CORP [US]
- See references of WO 9408087A1
Designated contracting state (EPC)
AT DE ES FR PT SE
DOCDB simple family (publication)
WO 9408087 A1 19940414; AU 5166593 A 19940426; AU 671159 B2 19960815; BR 9307135 A 19990727; CA 2144433 A1 19940414; CN 1104274 A 19950628; EP 0663030 A1 19950719; EP 0663030 A4 19951206; FI 951533 A0 19950331; FI 951533 A 19950331; ID 925 B 19960916; JP H08502327 A 19960312; KR 950703683 A 19950920; MY 110586 A 19980829; NO 951190 D0 19950328; NO 951190 L 19950328; NZ 256783 A 19960827; RU 2115780 C1 19980720; RU 95110663 A 19970410
DOCDB simple family (application)
US 9309230 W 19930928; AU 5166593 A 19930928; BR 9307135 A 19930928; CA 2144433 A 19930928; CN 93114180 A 19930929; EP 93922772 A 19930928; FI 951533 A 19950331; ID 936757 A 19930930; JP 50926094 A 19930928; KR 19950701205 A 19950329; MY PI19931985 A 19930929; NO 951190 A 19950328; NZ 25678393 A 19930928; RU 95110663 A 19930928