Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Treatment with particular chemical
Patent
1992-07-13
1993-09-28
Jones, W. Gary
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Treatment with particular chemical
162 78, 162 90, 162 19, D21C 304
Patent
active
052483894
ABSTRACT:
A process is provided for peroxygen bleaching of high yield pulp in which sodium carbonate replaces sodium hydroxide and sodium silicate. The process employs a chelating agent as a substitute for the silicate normally required so that the process can operate as a closed cycle system.
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Heimburger Stanley A.
Meng Tommy Y.
Tremblay Steve E.
Andersen R. L.
Baker P. C.
Elden R. E.
FMC Corporation
Jones W. Gary
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