A process for delignifying pulp with organic peroxyacid in the presence of phosphonic acids and their salts

Year	Description
1993	Invention patented by Johan Devenyns on June 28th, 1993. Abstract: Process for improving the selectivity of the delignification of a chemical paper pulp by employing a peroxyacid, in which the unbleached pulp originating from the cooking operation is treated with an aqueous solution of this organic peroxyacid in the presence of at least one stabilizer selected from phosphonic acids and their salts.
Source: selected by the editor from original sources.

Invention: A process for delignifying pulp with organic peroxyacid in the presence of phosphonic acids and their salts