| 摘要 |
<p>The invention relates to a process for the delignification and bleaching of paper pulp, comprising a step in which the paper pulp is brought into contact with hydrogen peroxide and with a copper-cyclic ligand complex, said cyclic ligand having formula (I), in which: each group R is independently chosen from hydrogen, a linear or branched C1 - C6 alkyl group, the group pyridin-2-ylmethyl and the group CH2COOH; each R1 and R2 group is independently chosen from hydrogen, a linear or branched C1 - C4 alkyl group and a linear or branched C1 - C4 alkylhydroxyl group; and each n is independently equal to 2 or 3.</p> |
