Method for the production of improved pulp

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Treatment with particular chemical

Reexamination Certificate

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C162S030110

Reexamination Certificate

active

07097739

ABSTRACT:
Compositions and method for improving properties of pulp produced or reducing the digester cycle time in alkaline chemical pulping processes in which an effective amount of at least one selected phosphonate or carboxylate compound or mixtures thereof is admixed with the alkaline aqueous mixture in the digester of the chemical pulping process. The compositions and method are especially well suited for use in the Kraft pulping process.

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