Title:
CHEMICAL-CONVERSION-TREATMENT-PLATED STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2013/038643
Kind Code:
A1
Abstract:
The surface of an Al-containing Zn-alloy-plated steel sheet is coated with a chemical conversion treatment liquid, which is dried to form a chemical conversion treatment film having a thickness of 0.5-10 μm. The chemical conversion treatment liquid contains: a fluororesin which includes 0.05-5 wt% of a hydrophilic functional group and 7-20 wt% of F atoms, the fluororesin having a number-average molecular weight within the range of 1,000-2,000,000; an oxygen acid salt, fluoride, hydroxide, organic acid salt, carbonate, or peroxide salt of a group 4A metal; and resin particles having an average particle size of 0.1-10 μm. The amount of the oxygen acid salt, fluoride, hydroxide, organic acid salt, carbonate, or peroxide salt of a group 4A metal relative to the fluororesin in the chemical conversion treatment liquid is within the range of 0.1-5 wt% expressed as metal.
Inventors:
MATSUNO MASANORI
FURUKAWA SHINYA
YAMAMOTO MASAYA
TAKETSU HIROFUMI
FURUKAWA SHINYA
YAMAMOTO MASAYA
TAKETSU HIROFUMI
Application Number:
PCT/JP2012/005722
Publication Date:
March 21, 2013
Filing Date:
September 10, 2012
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
MATSUNO MASANORI
FURUKAWA SHINYA
YAMAMOTO MASAYA
TAKETSU HIROFUMI
MATSUNO MASANORI
FURUKAWA SHINYA
YAMAMOTO MASAYA
TAKETSU HIROFUMI
International Classes:
C23C22/34; B32B15/082; C09D7/12; C09D201/06; C09D201/08; C23C22/08; C23C28/00
Foreign References:
| JP2003105555A | 2003-04-09 | |||
| JP2001072819A | 2001-03-21 | |||
| JP2007098864A | 2007-04-19 | |||
| JP2004501252A | 2004-01-15 | |||
| JPH0328380A | 1991-02-06 | |||
| JP2006175817A | 2006-07-06 | |||
| JP2003293169A | 2003-10-15 |
Attorney, Agent or Firm:
WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)
Koichi Washida (JP)
Download PDF:
Claims: