Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Treatment with particular chemical
Reexamination Certificate
2011-08-30
2011-08-30
Daniels, Matthew J (Department: 1741)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Treatment with particular chemical
C008S557000, C008S559000, C162S067000
Reexamination Certificate
active
08007636
ABSTRACT:
The present invention relates to methods of modifying cellulose fibers and of producing paper which methods include providing a pulp suspension of cellulose fibers and adding a cellulose derivative during the bleaching of the cellulose fibers in an acidic bleaching stage.
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Baltsen Hans-Ake
Greschik Thomas Christopher
Nordin Jan
Akzo Nobel N.V.
Calandra Anthony J
Daniels Matthew J
Morriss Robert C.
Serbin David J.
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