Title:
ANTI-CORROSION TREATMENT METHOD FOR ALUMINIUM HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2011/065482
Kind Code:
A1
Abstract:
Disclosed is a heat exchanger anti-corrosion treatment method for aluminium heat exchangers which have been flux-brazed using the Nocolok brazing process, particularly aluminium heat exchangers used in vehicle air-conditioners. The heat exchanger anti-corrosion treatment method can significantly improve corrosion resistance, and can improve deodorising properties without pre-formation processing, and without compromising hydrophilicity. In the disclosed anti-corrosion treatment method, an aluminium heat exchanger, which has been flux-brazed using the Nocolok brazing process, is brought into contact with a hydrophilic treatment liquid before being baked to form a hydrophilic film on the surface thereof. The hydrophilic treatment liquid contains a hydrophilic resin and lithium ions, and the lithium density in the hydrophilic film is 0.05-25% by mass
Inventors:
MATSUI NORIZUMI (JP)
OKAMURA HIROKO (JP)
OKAMURA HIROKO (JP)
Application Number:
PCT/JP2010/071129
Publication Date:
June 03, 2011
Filing Date:
November 26, 2010
Export Citation:
Assignee:
NIPPON PAINT CO LTD (JP)
MATSUI NORIZUMI (JP)
OKAMURA HIROKO (JP)
MATSUI NORIZUMI (JP)
OKAMURA HIROKO (JP)
International Classes:
C23C26/00; B05D7/14; F28F13/18
Foreign References:
| JP2006069197A | 2006-03-16 | |||
| JP2001164175A | 2001-06-19 | |||
| JPH06300482A | 1994-10-28 | |||
| JP2003003282A | 2003-01-08 | |||
| JP2006069197A | 2006-03-16 | |||
| JP2001164175A | 2001-06-19 |
Other References:
See also references of EP 2508647A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
Download PDF: