| 发明名称 |
Pitch control. |
| 摘要 |
<p>Accumulation of pitch or stickies in pulp or paper making is controlled by applying to the pulp or paper making equipment which is not in continuous contact with water separately a water soluble cationic polymer and a water soluble anionic polymer.</p> |
| 申请公布号 |
EP0493066(B1) |
申请公布日期 |
1994.11.09 |
| 申请号 |
EP19910311945 |
申请日期 |
1991.12.23 |
| 申请人 |
W.R. GRACE & CO.-CONN. |
发明人 |
WELKENER, ULRICH;HASSLER, THORD GUSTAV GUNNAR |
| 分类号 |
D21F1/32;D21C9/08;D21F7/00;D21H21/02;(IPC1-7):D21D5/00 |
主分类号 |
D21F1/32 |
| 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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