发明名称 |
METHOD FOR PRODUCING PAPER WITH A HIGH SUBSTANCE WEIGHT |
摘要 |
A process for producing paper of high basis weight by draining a paper pulp on a wire in the presence of a combination of at least two polymers as a retention and drainage aid system, forming sheets, and drying the sheets, which comprises forming the sheets in the absence of finely divided inorganic flocculants and using as retention and drainage aids (a) at least one amino-containing polymer and (b) at least one branched cationic polyacrylamide. |
申请公布号 |
EP1819875(A2) |
申请公布日期 |
2007.08.22 |
申请号 |
EP20050822765 |
申请日期 |
2005.12.01 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
KOCH, OLIVER;BLUM, RAINER;VAN DIJK, RON |
分类号 |
D21H21/10;D21H17/33;D21H17/37;D21H17/45;D21H23/04 |
主分类号 |
D21H21/10 |
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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