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Title:
CHEMICAL TREATMENT LIQUID AND CHEMICALLY TREATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2019/187945
Kind Code:
A1
Abstract:
The present invention forms a chemical treatment coating that has high adhesion to Zn-plated steel sheets. The chemical treatment liquid according to one embodiment of the present invention is for forming a chemical treatment coating on the surface of a zinc-plated steel sheet that has a zinc plating layer that includes 0.1–22.0 mass% of Al. The chemical treatment liquid includes a water-soluble group 4 metal oxoate, a phosphate compound, and a group 1 metal, the molar ratio of group 1 metal to group 4 metal being at least 0.02, and the molar ration of group 1 metal to phosphorous being at least 0.01.

Inventors:
NISHIDA, Yoshikatsu (4-1, Marunouchi 3 chome, Chiyoda-k, Tokyo 66, 〒1008366, JP)
MATSUNO, Masanori (4-1, Marunouchi 3 chome, Chiyoda-k, Tokyo 66, 〒1008366, JP)
YAMAKI, Nobuhiko (4-1, Marunouchi 3 chome, Chiyoda-k, Tokyo 66, 〒1008366, JP)
UENO, Shin (4-1, Marunouchi 3 chome, Chiyoda-k, Tokyo 66, 〒1008366, JP)
Application Number:
JP2019/007701
Publication Date:
October 03, 2019
Filing Date:
February 27, 2019
Export Citation:
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Assignee:
NISSHIN STEEL CO., LTD. (4-1 Marunouchi 3 chome, Chiyoda-ku Tokyo, 66, 〒1008366, JP)
International Classes:
C23C22/07; B32B15/04; C22C18/04; C23C2/06; C23C28/00
Foreign References:
JP2014208874A2014-11-06
JP2016089232A2016-05-23
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (Daiwa Minamimorimachi Building, 2-6 Tenjinbashi 2-chome Kita, Kita-ku, Osaka-sh, Osaka 41, 〒5300041, JP)
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