| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing deinked pulp, capable of more decreasing residual ink and more improving whiteness than ever. <P>SOLUTION: This method for producing the deinked pulp has a process (1) for washing pulp slurry which contains a nonionic surfactant (a) having a hydrophile-lipophile balance (HLB) of 2-12, a process (2) for adding a fatty acid mixture (b) having a specified fatty acid formulation to the washed pulp slurry obtained by the process (1), and a process (3) for subjecting the pulp slurry obtained by the process (2) to floatation. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
