Nitrogen-free corrosion inhibitors having a good buffering effect
    1.
    发明授权
    Nitrogen-free corrosion inhibitors having a good buffering effect 失效
    具有良好缓冲作用的无氮腐蚀抑制剂

    公开(公告)号:US5795372A

    公开(公告)日:1998-08-18

    申请号:US860109

    申请日:1997-06-16

    IPC分类号: C23F11/10 C23F11/12

    摘要: Nitrogen-free aqueous anticorrosion composition containing a) a carboxylic acid having 6 to 44 carbon atoms; and b) aromatic hydroxy compounds having a pK.sub.a value in the range of 7.0 to 11 for the hydroxy group, in a weight ratio of 1:2 to 20:1, in the form of a concentrate to be diluted with water by a factor of between 20 and 200 and in the form of a ready-to-use aqueous preparation that preferably contains 0.2 to 2 wt % component a) and 0.1 to 0.6 wt % component b) and has a pH value in the range of 7 to 11.

    摘要翻译: PCT No.PCT / EP95 / 04844 Sec。 371日期:1997年6月16日 102(e)日期1997年6月16日PCT提交1995年12月8日PCT公布。 公开号WO96 / 18757 日期1996年6月20日无氮水性防腐蚀组合物,其含有a)碳原子数为6〜44的羧酸; 和b)对于羟基,pKa值为7.0-11的芳族羟基化合物,其重量比为1:2至20:1,以用水稀释的浓缩物的形式为因子 优选含有0.2〜2重量%成分a)和0.1〜0.6重量%成分b)的现成的水性制剂,pH值在7〜11的范围内。