发明名称 |
PAPERMAKING PROCESS |
摘要 |
<p>In the production of paper or pulp sheets from a paper stock, a binder is added which comprises cationic and anionic components to improve the paper characteristics and the stock characteristics, such that increased retention and a more readily dewatered stock are obtained. The anionic component consists of colloidal anionic particles having at least one surface layer of aluminium silicate or aluminium-modified silicic acid, such that the surface groups of the particles contain silicium and aluminium atoms in a ratio of from 9.5:0.5 to 7.5:2.5. The cationic component consists of cationic carbohydrate having a degree of substitution of 0.01-1.0.</p> |
申请公布号 |
CA1250703(A) |
申请公布日期 |
1989.03.07 |
申请号 |
CA19850483237 |
申请日期 |
1985.06.05 |
申请人 |
EKA AB |
发明人 |
ANDERSSON, KJELL R.;LARSSON, BERNT;THORESSON, HANS-OLOF;LARSSON, BO V. |
分类号 |
D21H21/16;D21H17/21;D21H17/24;D21H17/28;D21H17/29;D21H17/32;D21H17/63;D21H17/67;D21H17/68;D21H21/10;D21H23/14;(IPC1-7):D21H3/20;D21H3/28;D21H3/78 |
主分类号 |
D21H21/16 |
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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