Title:
PULPING PROCESS
Document Type and Number:
WIPO Patent Application WO2001059202
Kind Code:
A3
Abstract:
The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a chemical pulping process with a delignifying gas, wherein the gas comprises chlorine dioxide.
Inventors:
BRYANT PATRICK S (US)
SOKOL JOHN C (US)
SOKOL JOHN C (US)
Application Number:
PCT/SE2001/000256
Publication Date:
January 03, 2002
Filing Date:
February 08, 2001
Export Citation:
Assignee:
AKZO NOBEL NV (NL)
EKA CHEMICALS AB (SE)
BRYANT PATRICK S (US)
SOKOL JOHN C (US)
EKA CHEMICALS AB (SE)
BRYANT PATRICK S (US)
SOKOL JOHN C (US)
International Classes:
D21B1/02; D21C1/00; D21C1/04; D21C3/22; (IPC1-7): D21C1/00; D21C1/04
Domestic Patent References:
| WO1989008165A1 | 1989-09-08 |
Foreign References:
| GB567774A | 1945-03-02 |
Other References:
DATABASE WPI Section Ch Week 198908, Derwent World Patents Index; Class F09, AN 1989-059880, XP002137869
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