| 发明名称 |
METHOD FOR PRODUCING PAPER, PAPERBOARD AND CARDBOARD HAVING HIGH DRY STRENGTH |
| 摘要 |
Process for the production of paper, board and cardboard having high dry strength by separate addition of a polymer comprising vinylamine units and of ligninsulfonic acid and/or a ligninsulfonate to a paper stock, draining of the paper stock and drying of the paper products. |
| 申请公布号 |
EP1999314(A1) |
申请公布日期 |
2008.12.10 |
| 申请号 |
EP20070712497 |
申请日期 |
2007.03.09 |
| 申请人 |
BASF SE |
发明人 |
RUEBENACKER, MARTIN;SCHALL, NORBERT;KRUEGER, ELLEN |
| 分类号 |
D21H17/43;D21H17/23;D21H17/42;D21H21/18 |
主分类号 |
D21H17/43 |
| 代理机构 |
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代理人 |
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