METAL SURFACE TREATMENT AGENT, METAL SURFACE TREATMENT METHOD, AND METAL MATERIAL

Title:

METAL SURFACE TREATMENT AGENT, METAL SURFACE TREATMENT METHOD, AND METAL MATERIAL

Document Type and Number:

WIPO Patent Application WO/2018/207384

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a metal surface treatment agent with which it is possible to form a coating film that exhibits good corrosion resistance at an edge part of a coated metal material, such as a cut location. This problem can be solved by a metal surface treatment agent which contains ions (A) including at least one type of metal selected from among zirconium, titanium and hafnium at a metal-equivalent molar concentration of 0.1 mmol/L or more and a water-based urethane resin (B) having a weight average molecular weight of 50,000 or more at a solid content mass concentration of 0.5-10 g/L, and in which the ratio [BM/AM] of the metal-equivalent mass (AM) of the ions (A) and the solid content mass (BM) of the resin (B) is 0.7 or more.

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Inventors:

SUZUKI AMANE (JP)
IKO TOMOHIRO (JP)

Application Number:

PCT/JP2017/031230

Publication Date:

November 15, 2018

Filing Date:

August 30, 2017

Export Citation:

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Assignee:

NIHON PARKERIZING (JP)

International Classes:

C23C26/00

Domestic Patent References:

WO2014175194A1	2014-10-30
WO2013161621A1	2013-10-31
WO2007069783A1	2007-06-21

Foreign References:

JP2012077368A	2012-04-19
JP2011219832A	2011-11-04
JP2009041077A	2009-02-26

Other References: