发明名称 |
Process for improving the dry strength of paper and for improving the effect of optical brighteners in the preparation or coating of paper |
摘要 |
A process for improving the dry strength of paper and for improving the effect of optical brighteners in the preparation or coating of paper which includes the step of adding fillers and/or pigments and anionic brighteners to the paper making process the improvement comprising adding to paper making pulp a polypiperidine halide absorbed in a dispersed state on a fine-particle organic or inorganic carrier before the anionic brightener is added.
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申请公布号 |
US4210488(A) |
申请公布日期 |
1980.07.01 |
申请号 |
US19790014543 |
申请日期 |
1979.02.23 |
申请人 |
REUSS, PETER J;WEIGL, JOSEF |
发明人 |
REUSS, PETER J;WEIGL, JOSEF |
分类号 |
D06L3/12;D21H21/18;D21H21/30;(IPC1-7):D21H3/80 |
主分类号 |
D06L3/12 |
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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