Title:
CHEMICAL TREATMENT LIQUID FOR STEEL MATERIAL COATING PRIMER AND METHOD OF TREATMENT
Document Type and Number:
WIPO Patent Application WO/2010/004651
Kind Code:
A1
Abstract:
A chemical treatment liquid for steel material coating primer comprising a zirconium fluorine complex amounting to 50 to 500 ppm by mass in terms of Zr, free fluorine amounting to 5 to 50 ppm by mass and a polyethyleneimine of 300 to 10,000 weight average molecular weight wherein the molar ratios of primary amino and tertiary amino based on the total quantity of amino are 30% or more and 15% or more, respectively, amounting to 5 to 30% by mass based on Zr so as to exhibit a pH value of 3 to 5. Further, there is provided a relevant method of chemical treatment. In the instance of steel material coating, especially electrodeposition coating, there can be realized excellent coating film adhesion, post-coating corrosion resistance and coating adhering-around property.
Inventors:
ISHII HITOSHI (JP)
NAGASHIMA YASUHIKO (JP)
NAGASHIMA YASUHIKO (JP)
Application Number:
PCT/JP2008/062608
Publication Date:
January 14, 2010
Filing Date:
July 11, 2008
Export Citation:
Assignee:
NIHON PARKERIZING (JP)
ISHII HITOSHI (JP)
NAGASHIMA YASUHIKO (JP)
ISHII HITOSHI (JP)
NAGASHIMA YASUHIKO (JP)
International Classes:
C23C28/00; C23C22/34; C25D13/20
Foreign References:
JP2004218074A | 2004-08-05 | |||
JP2006336106A | 2006-12-14 | |||
JP2002363488A | 2002-12-18 | |||
JP2001348674A | 2001-12-18 | |||
JPH0860380A | 1996-03-05 | |||
JP2004218074A | 2004-08-05 | |||
JP2004218070A | 2004-08-05 |
Other References:
See also references of EP 2309026A4
Attorney, Agent or Firm:
WATANABE, Mochitoshi et al. (JP)
Mochitoshi Watanabe (JP)
Mochitoshi Watanabe (JP)
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