Title:
不動態化工程前の亜鉛表面の前処理
Document Type and Number:
Japanese Patent JP6526968
Kind Code:
B2
Abstract:
Alkaline aqueous composition having a pH value of at least 8.5, comprises (a) at least 0.01 g/l of iron ions, (b) one or more water soluble organic carboxylic acids comprising at least one amino group at alpha -, beta - or gamma -position relative to the acid group and/or their water-soluble salts, and (c) one or more oxoacids of phosphorus or nitrogen and/or their water soluble salts, where at least one phosphorus atom or nitrogen atom is present in an average oxidation state. An independent claim is included for pretreating galvanized steel surfaces, comprising (i) optionally cleaning and degreasing the steel surfaces using an alkaline cleaning agent, (ii) contacting the steel surfaces with the alkaline composition, and (iii) subjecting the steel surfaces to passivating wet chemical conversion coatings.
Inventors:
Andreas Arnold
Volperth, Mitchell
Roth, Marcel
Zundermeier, Utah
Volperth, Mitchell
Roth, Marcel
Zundermeier, Utah
Application Number:
JP2014558113A
Publication Date:
June 12, 2019
Filing Date:
February 22, 2013
Export Citation:
Assignee:
Henkel AG & Co. KGaA
International Classes:
C23C22/78; C23C22/12; C23C22/34
Domestic Patent References:
| JP51135840A | ||||
| JP2010526206A |
Foreign References:
| WO2011090691A2 |
Attorney, Agent or Firm:
Michiko Matsutani
Kenichi Morizumi
Kenichi Morizumi