发明授权
- 专利标题： Linear basic polymers, their preparation and their use
- 专利标题（中）： 线性碱性聚合物，它们的制备及其用途
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申请号： US397234申请日： 1982-07-12
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公开(公告)号： US4421602A公开(公告)日： 1983-12-20
- 发明人: Fritz Brunnmueller , Rolf Schneider , Michael Kroener , Hans Mueller , Friedrich Linhart
- 申请人： Fritz Brunnmueller , Rolf Schneider , Michael Kroener , Hans Mueller , Friedrich Linhart
- 申请人地址： DEX Rheinland-Pfalz
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Rheinland-Pfalz
- 优先权： DEX3128478 19810718
- 主分类号： B01D21/01
- IPC分类号： B01D21/01 ; C08F8/00 ; C08F8/12 ; C08F26/00 ; C08F26/02 ; D06Q1/10 ; D21H17/34 ; D21H17/37 ; D21H17/45 ; C08F22/36 ; D21H3/38
摘要：
Linear basic polymers containing, as characteristic components, from 90 to 10 mole % of copolymerized units of the formula ##STR1## and from 10 to 90 mole % of copolymerized units of the formula ##STR2## are obtained by polymerizing the compound of the formula CH.sub.2 .dbd.CH--NH--CHO (N-vinylformamide) to a polyvinylformamide in the presence of a free radical polymerization initiator and splitting off the formyl group from the resulting polymer at from 20.degree. to 200.degree. in the presence of an acid or base. The reaction products are used as retention agents, drainage assistants and flocculants in papermaking.
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