发明公开
- 专利标题： VERFAHREN ZUR HYDROLYSE VON VINYLCARBONSÄUREAMIDEINHEITEN ENTHALTENDEN POLYMEREN
- 专利标题（英）： Process for hydrolyzing polymers containing vinylcarboxamide units
- 专利标题（中）： 乙烯基羧酰胺含聚合物的方法水解
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申请号： EP09744405.3申请日： 2009-11-02
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公开(公告)号： EP2346907A1公开(公告)日： 2011-07-27
- 发明人: WINTER, Manfred , WEIGL, Hagen , HÄHNLE, Hans-Joachim , KRAMER, Andreas
- 申请人： BASF SE
- 申请人地址： 67056 Ludwigshafen DE
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： 67056 Ludwigshafen DE
- 代理机构： Peatfield, Jeremy William
- 优先权： EP08168363 20081105
- 国际公布： WO2010052179 20100514
- 主分类号： C08F8/12
- IPC分类号： C08F8/12
摘要：
A process for hydrolyzing polymers containing vinylcarboxamide units by heating polymers containing vinylcarboxamide units in an aqueous medium in the presence of acids or bases, wherein an aqueous solution or dispersion of a polymer containing vinylcarboxamide units and an aqueous solution of an acid or base are supplied continuously to a tubular reactor under elevated pressure, and 0.05 to less than one equivalent of an acid or base is used per vinylcarboxamide equivalent, and the mixture is passed through the tubular reactor at a temperature of >100°C up to 250°C, decompressed and cooled.
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