Title:
PULPING PROCESS
Document Type and Number:
WIPO Patent Application WO2001059203
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 high-yield pulping process with a delignifying gas comprising gaseous compounds comprising at least one oxygen atom such as chlorine dioxide containing gas.
Inventors:
BRYANT PATRICK S (US)
SOKOL JOHN C (US)
HUTTO DWANE S (US)
SOKOL JOHN C (US)
HUTTO DWANE S (US)
Application Number:
PCT/SE2001/000257
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)
HUTTO DWANE S (US)
EKA CHEMICALS AB (SE)
BRYANT PATRICK S (US)
SOKOL JOHN C (US)
HUTTO DWANE S (US)
International Classes:
D21B1/02; D21C1/00; D21C1/04; D21C3/22; (IPC1-7): D21C1/00; D21B1/02; D21C1/04
Domestic Patent References:
WO1991019040A1 | 1991-12-12 | |||
WO1994018382A1 | 1994-08-18 |
Foreign References:
US4211605A | 1980-07-08 | |||
GB567774A | 1945-03-02 | |||
EP0433258A1 | 1991-06-19 |
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