发明授权
- 专利标题： Production of paper, board and cardboard
- 专利标题（中）： 生产纸张，纸板和卡片
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申请号： US641852申请日： 1991-01-16
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公开(公告)号： US5145559A公开(公告)日： 1992-09-08
- 发明人: Werner Auhorn , Friedrich Linhart , Primoz Lorencak , Michael Kroener , Norbert Sendhoff , Walter Denzinger , Heinrich Hartmann
- 申请人： Werner Auhorn , Friedrich Linhart , Primoz Lorencak , Michael Kroener , Norbert Sendhoff , Walter Denzinger , Heinrich Hartmann
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX4001045 19900116
- 主分类号： C08F8/12
- IPC分类号： C08F8/12 ; D21H17/34 ; D21H17/36
摘要：
Paper, board and cardboard are produced by draining a paper stock, containing undesirable substances, in the presence of hydrolyzed homo- and/or copolymers of N-vinylformamide having a degree of hydrolysis of not less than 60% and a cationic retention aid. According to the invention, faster drainage and improved retention are obtained compared with the use of known fixing agents.
公开/授权文献
- US5755080A Method and machine for packing products 公开/授权日：1998-05-26
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