公开(公告)号：EP3967664A1

公开(公告)日：2022-03-16

申请号：EP20805053.4

申请日：2020-04-28

申请人： Kao Corporation

发明人： HOSOKAWA Kento ,  CHIBA Masashi ,  YAMAMOTO Tetsuji ,  TANAKA Takanori

IPC分类号： C02F1/50 ,  A01N37/04 ,  A01N37/06 ,  A01N43/08 ,  A01N59/00 ,  A01P1/00 ,  A01P3/00 ,  C02F1/70 ,  C02F1/72 ,  C11D7/18 ,  C11D7/26 ,  C11D7/32 ,  C11D7/38

摘要： The present invention is a method for removing a biofilm containing a metal and formed in a water system, wherein the biofilm is brought into contact with (a) a compound having a hydroxyl radical generation ability and (b) a reducing agent.

公开(公告)号：EP3967144A1

公开(公告)日：2022-03-16

申请号：EP20804833.0

申请日：2020-04-28

申请人： Kao Corporation

发明人： HOSOKAWA Kento ,  CHIBA Masashi ,  YAMAMOTO Tetsuji ,  TANAKA Takanori

IPC分类号： A01N59/00 ,  A01P1/00 ,  C11D7/18 ,  C11D7/26 ,  C11D7/28 ,  C11D7/32 ,  C11D7/34 ,  A01P3/00 ,  C02F1/50 ,  C02F1/70 ,  C02F1/72

摘要： The present invention is a biofilm removing composition for use in a water system comprising the following components (a), (b) and (c) and water, wherein a pH at 20°C is 2.5 or more and 6.5 or less,
component (a): a compound having a hydroxyl radical generation ability,
component (b): a reducing agent, and
component (c): a monovalent or divalent organic acid or a salt thereof with a primary dissociation constant of 1.2 or more and 4.6 or less.