发明名称 |
PROCESS FOR DELIGNIFICATION AND BLEACHING OF CHEMICAL WOOD PULPS |
摘要 |
A process of delignifying and bleaching a chemical wood pulp with hydrogen peroxide and dicyandiamide as an ativator provides a higher degree of delignification and brightness of the pulp and overcomes problems of fibre degradation. The process comprises adding hydrogen peroxide and dicyandiamide as a bleaching activator to a chemical wood pulp slurry under alkaline conditions.
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申请公布号 |
WO9613634(A1) |
申请公布日期 |
1996.05.09 |
申请号 |
WO1995CA00567 |
申请日期 |
1995.10.11 |
申请人 |
PULP AND PAPER RESEARCH INSTITUTE OF CANADA;CHEN, JIANXIN |
发明人 |
CHEN, JIANXIN |
分类号 |
D21C9/10;D21C9/16;(IPC1-7):D21C9/10 |
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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