| 发明名称 |
TREATMENT OF CELLULOSIC MATERIAL AND COMPOSITIONS FOR USE IN THIS |
| 摘要 |
<p>Waste paper, especially office waste including laser and/or photocopier paper, is subjected to de-inking by pulping in the presence of a water-soluble anionic polymer at a substantially neutral pH and then by flotation in the presence of a cationic surfactant.</p> |
| 申请公布号 |
CA2152782(A1) |
申请公布日期 |
1995.05.04 |
| 申请号 |
CA19942152782 |
申请日期 |
1994.10.26 |
| 申请人 |
ALLIED COLLOIDS LIMITED;ALLIED COLLOIDS LIMITED |
发明人 |
BINGHAM, TIMOTHY GUY;STOCKWELL, JOHN OLIVER;LANGLEY, JOHN GRAHAM |
| 分类号 |
D21C5/02;(IPC1-7):D21C5/02 |
主分类号 |
D21C5/02 |
| 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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