| 发明名称 |
PROCESS FOR THE PRODUCTION OF PAPER |
| 摘要 |
The present invention relates to a process for producing paper which comprises:
(i) providing an aqueous suspension comprising cellulosic fibres,(ii) adding to the suspension after all points of high shear:
a first polymer being a cationic polymer having a charge density above 2.5 meq/g;a second polymer; anda third polymer being an organic or inorganic anionic polymer; and(iii) dewatering the obtained suspension to form paper. |
| 申请公布号 |
US2014318727(A1) |
申请公布日期 |
2014.10.30 |
| 申请号 |
US201414328146 |
申请日期 |
2014.07.10 |
| 申请人 |
AKZO NOBEL N.V. |
发明人 |
Solhage Fredrik;Carlen Joakim;Johansson Birgitta |
| 分类号 |
D21H17/37 |
主分类号 |
D21H17/37 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for producing paper which comprises:
(iv) providing an aqueous suspension comprising cellulosic fibres, (v) adding to the suspension after all points of high shear:
a first polymer being a cationic polymer having a charge density above 4.0 meq/g;a second polymer having a molecular weight above 500,000; anda third polymer being an anionic polymer; and (vi) dewatering the obtained suspension to form paper. |
| 地址 |
Arnhem NL |
