发明公开
- 专利标题： PROCESS FOR DELIGNIFICATION AND BLEACHING OF CHEMICAL WOOD PULPS
- 专利标题（中）： 方法脱木素和化学纸浆漂白
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申请号： EP95933278.0申请日： 1995-10-11
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公开(公告)号： EP0789798A1公开(公告)日： 1997-08-20
- 发明人: CHEN, Jianxin
- 申请人： Pulp and Paper Research Institute of Canada
- 申请人地址： 570 St. John's Boulevard Pointe Claire Quebec H9R 3J9 CA
- 专利权人： Pulp and Paper Research Institute of Canada
- 当前专利权人： Pulp and Paper Research Institute of Canada
- 当前专利权人地址： 570 St. John's Boulevard Pointe Claire Quebec H9R 3J9 CA
- 代理机构： Archer, Philip Bruce, et al
- 优先权： US19940331935 19941031
- 国际公布： WO1996013634 19960509
- 主分类号： D21C9
- IPC分类号： D21C9
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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