CHEMICAL CONVERSION COATING AGENT, SURFACE-TREATED METAL AND SURFACE TREATMENT METHOD

WIPO Patent Application WO/2022/210245

A1

The present invention provides a chemical conversion coating agent that enables chemical conversion coating by which favorable corrosion resistance is obtained after coating.　A chemical conversion coating agent which contains (A) at least one metal component that is selected from the group consisting of zirconium, titanium and hafnium, (B) fluorine and (C) an allylamine-diallylamine copolymer, wherein: the content of the metal component (A) is 10 to 10,000 ppm by mass in terms of elemental metal relative to the total mass of the chemical conversion coating agent; the content ratio of a diallylamine segment derived from diallylamine in the allylamine-diallylamine copolymer (C) is 52% to 98% by mole relative to the total of an allylamine segment derived from allylamine and the diallylamine segment; the weight average molecular weight of the allylamine-diallylamine copolymer (C) is 500 to 500,000; and the content of the allylamine-diallylamine copolymer (C) is 25 to 5,000 ppm by mass in terms of the resin solid content concentration relative to the total mass of the chemical conversion coating agent.

UENO TAKAYUKI (JP)
KOGANEZAWA YU (JP)

PCT/JP2022/013880

October 06, 2022

March 24, 2022

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NIPPON PAINT SURF CHEMICALS CO LTD (JP)

C23C22/34; C23C22/83; C23C26/00

JPH09302026A	1997-11-25
JP2004218074A	2004-08-05
JP2005336550A	2005-12-08
JP2008261035A	2008-10-30
JP2009234010A	2009-10-15
JP2010163640A	2010-07-29
JP2019081940A	2019-05-30
JP2020090625A	2020-06-11
JP2004218074A	2004-08-05

SHOBAYASHI Masayuki et al. (JP)

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