Chemical conversion treatment agent, method for producing chemical conversion coating, metal material having chemical conversion coating, and painted metal material

Patent metadata

Field	Value
Publication number	US-11359288-B2
Application number	US-201716473700-A
Country	US
Kind code	B2
Filing date	Dec 22, 2017
Priority date	Dec 28, 2016
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

Provided are a novel chemical conversion treatment agent which is capable of forming, on/over the surface of a metal material, a chemical conversion coating which is superior in corrosion resistance, a method for producing a chemical conversion coating on/over the surface of a metal material with the use of the chemical conversion treatment agent, a metal material having a coating, and a painted metal material.The problem mentioned above can be solved by the chemical conversion treatment agent for forming a coating on/over the surface of a metal material, which characterized by containing: an ion containging at least one metal selected from the group consisting of titanium, zirconium and hafnium; a fluorine ion; at least one selected from the group consisting of an alkanesulfonic acid, an alkanolsulfonic acid, and ions thereof; and an ion containing trivalent iron.

First claim

The invention claimed is:

1. A chemical conversion treatment agent for a metal material, for forming a coating on/over a surface of the metal material, the chemical conversion treatment agent comprising:
an ion containing at least one metal selected from the group consisting of titanium, zirconium and hafnium;
a fluorine ion;
at least one selected from the group consisting of an alkanesulfonic acid, an alkanolsulfonic acid, and ions thereof;
an ion containing trivalent iron, and
a blending amount of a component source of the ion containing trivalent iron falls within the range of 5 mg/kg or more and 2000 mg/kg or less in iron equivalent mass.

2. The chemical conversion treatment agent according to claim 1 , comprising an ion containing at least one metal selected from the group consisting of aluminum, magnesium, and zinc.

3. The chemical conversion treatment agent according to claim 2 , comprising at least one selected from the group consisting of water-soluble resins and water-dispersible resins.

4. The chemical conversion treatment agent according to claim 1 , comprising at least one selected from the group consisting of water-soluble resins and water-dispersible resins.

5. A method for producing a chemical conversion coating on/over a surface of a metal material, the method comprising
bringing the chemical conversion treatment agent according to claim 1 into contact with the surface.

6. The method according to claim 5 , further comprising carrying out a painting on/over the surface which was subjected to contact with the chemical conversion treatment agent.

Assignees

• Nihon Parkerizing

Inventors

• Takami Atsushi
• Fukushi Hidekazu

Classifications

• C23C22/34 Primary

  containing fluorides or complex fluorides · CPC title

• B05D3/10

  by other chemical means · CPC title

• C23C22/82

  After-treatment · CPC title

• B05D7/14

  to metal, e.g. car bodies (involving a chemical reaction between the metal and the coating C23) · CPC title

• B32B15/04

  comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)} · CPC title