Document Type and Number:
Japanese Patent JPS5113761
Kind Code:
B2
Abstract:
A process is provided for producing cellulose pulp of high brightness, which comprises pulping lignocellulosic material such as wood with oxygen under superatmospheric pressure in two stages, in the first at a pH within the range from about 6 to about 9, and in the second at a more alkaline pH of at least about 10.
Inventors:
SAMUELSON H O
SMEDMAN L A
HEGGLUND E O S
SMEDMAN L A
HEGGLUND E O S
Application Number:
JP13924273A
Publication Date:
May 04, 1976
Filing Date:
December 07, 1973
Export Citation:
Assignee:
MO OCH DOMSJOE AB (SE)
International Classes:
D21C3/00; D21C3/26; D21C9/147