发明名称 |
METHOD FOR PRODUCING DEINKED PULP, METHOD FOR PRODUCING PAPER, AND METAL COMPLEX CATALYST SUITABLE THEREFOR |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing deinked pulp under a weakly alkaline condition, which is capable of producing a deinked pulp while reducing the amount of unreleased ink and adhesive foreign material at the same time by using only a small amount of an alkaline chemical in the deinked pulp production step. <P>SOLUTION: Hydrogen peroxide and a metal complex catalyst capable of activating hydrogen peroxide are added to waste paper or waste paper pulp in the deinked pulp production step and the following step 1 and step 2 are carried out in the order. (Step 1) A step to defibrate waste paper or waste paper pulp at a pH range of 8.5 to 10, and (Step 2) a step to treat the pulp obtained in the step 1 with a screen apparatus to remove the adhesive foreign materials. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
申请公布号 |
JP2009068143(A) |
申请公布日期 |
2009.04.02 |
申请号 |
JP20070238304 |
申请日期 |
2007.09.13 |
申请人 |
NISSHIN KAGAKU KENKYUSHO:KK |
发明人 |
SHIMOYAMA TATSUGO;KUNISADA YUJI;OKA TAKASHI;KATO HARUO |
分类号 |
D21C5/02 |
主分类号 |
D21C5/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|