发明名称 |
Method for producing bleached wood fibre material |
摘要 |
The invention relates to a method for producing bleached wood fibre material, comprising the following steps: a) delaminating wood particles, that are large and optionally pre-treated with chemicals and/or water, into modified wood particles; b) grinding the modified wood particles produced in step a) in one or a number of refiners; c) and optionally treating the material produced in step b) with oxidative or reductive bleaching agents. The method is characterised in that step a) and/or step b) are carried out in the presence of a composition Z, said composition Z containing one or a number of the following components (Z1) to (Z3): a salt of dithionous acid H |
申请公布号 |
AU2015238642(A1) |
申请公布日期 |
2016.10.06 |
申请号 |
AU20150238642 |
申请日期 |
2015.03.13 |
申请人 |
BASF SE |
发明人 |
Erren, Stefan;Schonhaber, Dieter;Schachtl, Martin;Osipov, Pavel Vassilievitch |
分类号 |
D21C9/10;D21B1/04;D21B1/06;D21B1/12 |
主分类号 |
D21C9/10 |
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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