- 专利标题： Process for inhibiting unwanted free-radical polymerization of acrylic acid present in a liquid phase P
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申请号： US13253245申请日： 2011-10-05
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公开(公告)号： US09096513B2公开(公告)日： 2015-08-04
- 发明人: Till Blum , Peter Zurowski , Tobias Johannes Korn , Sylke Haremza , Thorsten Friese , Friedrich-Georg Martin , Ulrich Jäger , Steffen Rissel , Volker Schliephake
- 申请人： Till Blum , Peter Zurowski , Tobias Johannes Korn , Sylke Haremza , Thorsten Friese , Friedrich-Georg Martin , Ulrich Jäger , Steffen Rissel , Volker Schliephake
- 申请人地址： DE Ludwigshafen
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： DE Ludwigshafen
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： DE102010042216 20101008
- 主分类号： C07C51/50
- IPC分类号： C07C51/50
摘要：
A process for inhibiting unwanted free-radical polymerization of acrylic acid present in a liquid phase P whose acrylic acid content is at least 10% by weight and which, based on the weight of the acrylic acid present therein, additionally comprises at least 100 ppm by weight of propionic acid and at least 100 ppm by weight of glyoxal, in which at least one chemical compound of the element copper is added to the liquid phase P, and the resulting liquid phases P to which a chemical compound of the element copper has been added.
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