| 发明名称 |
Method of decreasing the rate of photoyellowing with thiocyanic acid |
| 摘要 |
A method of decreasing the rate of photoyellowing in paper containing mechanical pulp comprising: applying an aqueous solution containing an effective amount of one or more salts of thiocyanic acid on the surface of a paper sheet in a papermaking process. |
| 申请公布号 |
US8092649(B2) |
申请公布日期 |
2012.01.10 |
| 申请号 |
US20050302862 |
申请日期 |
2005.12.14 |
| 申请人 |
SHEVCHENKO SERGEY M.;DUGGIRALA PRASAD Y.;NALCO COMPANY |
发明人 |
SHEVCHENKO SERGEY M.;DUGGIRALA PRASAD Y. |
| 分类号 |
D21H17/62;D21H17/11;D21H21/38 |
主分类号 |
D21H17/62 |
| 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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