发明名称 |
METHOD FOR REMOVING INK FROM PAPER |
摘要 |
<p>A method for removing ink from printed paper comprising: (a) pulping printed paper at least 25 wt% of which is old newsprint at a consistency of at least about 3% to obtain a pulp slurry; (b) treating the pulp slurry with an ink removing system, which system comprises: (i) a combination of lipase and at least one second enzyme chosen from amylase, xylanase or cellulase, and (ii) a non-ionic surfactant, in amounts effective to release ink from said pulp slurry, wherein the lipase is present in an amount of at least about 0.001 wt% based on the dry content of the pulp slurry and the ratio of the at least one second enzyme:lipase is at least about 1.2:1; and (c) separating the released ink from the pulp slurry, wherein the treating step is carried out prior to a deinking flotation stage.</p> |
申请公布号 |
WO2011100530(A1) |
申请公布日期 |
2011.08.18 |
申请号 |
WO2011US24501 |
申请日期 |
2011.02.11 |
申请人 |
AKZO NOBEL CHEMICALS INTERNATIONAL B.V.;HAYNES, ROBERT, DANIEL;AUGER, SCOTT, BARTON |
发明人 |
HAYNES, ROBERT, DANIEL;AUGER, SCOTT, BARTON |
分类号 |
D21C5/02;D21C5/00 |
主分类号 |
D21C5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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