发明名称 |
PROCESS FOR INCREASING THE DRY STRENGTH OF PAPER, BOARD AND CARDBOARD |
摘要 |
Method for producing paper, paperboard and cardboard having a high dry strength by adding at least one water-soluble (a) polymer comprising vinyl amine units and at least one (b) polymer comprising ethylene imine units and at least one water-soluble polymeric anionic compound to form a paper material, dewatering the paper material during the formation of sheets, and drying the paper product, wherein the water-soluble cationic polymers (a) and (b) are metered in an arbitrary sequence or as a mixture to form a paper material, and paper products obtained according to the method.
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申请公布号 |
CA2733503(A1) |
申请公布日期 |
2010.02.25 |
申请号 |
CA20092733503 |
申请日期 |
2009.08.10 |
申请人 |
BASF SE |
发明人 |
HAEHNLE, HANS-JOACHIM;JEHN-RENDU, CHRISTIAN;BLUM, RAINER;KRUEGER, ELLEN;SCHALL, NORBERT;RUEBENACKER, MARTIN |
分类号 |
D21H17/42;D21H17/37;D21H17/44;D21H17/45;D21H17/48;D21H17/55;D21H17/56;D21H21/18 |
主分类号 |
D21H17/42 |
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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