| 发明名称 |
PRODUCTION OF PAPER, BOARD AND CARDBOARD |
| 摘要 |
Paper, board and cardboard are produced by draining a pulp slurry in the presence of high molecular weight, water-soluble polymers of N-vinyl-amides as drainage aids, retention agents and flocculants. These polymers are particularly effective in a pulp slurry which has a high content of interfering substances and other phenolic compounds. |
| 申请公布号 |
CA1287453(C) |
申请公布日期 |
1991.08.13 |
| 申请号 |
CA19870538060 |
申请日期 |
1987.05.27 |
| 申请人 |
LINHART, FRIEDRICH |
发明人 |
LINHART, FRIEDRICH;DEGEN, HANS-JUERGEN;AUHORN, WERNER;KROENER, MICHAEL;HARTMANN, HEINRICH;HEIDE, WILFRIED |
| 分类号 |
D21H17/23;D21H17/34;D21H17/37;D21H17/47;D21H17/55 |
主分类号 |
D21H17/23 |
| 代理机构 |
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代理人 |
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