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Method for hydrogen peroxide bleaching of pulp

  • US 20040163779A1
  • Filed: 02/21/2003
  • Published: 08/26/2004
  • Est. Priority Date: 02/21/2003
  • Status: Active Grant
First Claim
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1. A method for pulp bleaching comprising the steps of:

  • providing a pulp sample for bleaching, the pulp sample stemming from a pulp producing process;

    providing a bleaching liquor comprising water and at least an organic component as solvent components constituting a bleaching medium, dissolved within are at least a bleaching agent and at least a basic agent; and

    subjecting the pulp sample to the bleaching liquor for a predefined amount of time at predefined bleaching conditions;

    wherein the at least an organic component amounts to at least 5% in weight of the bleaching medium.

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