Surface treatment agent for metal material, method of producing the same, metal material having a surface treatment coating, and method of producing the same

Patent metadata

Field	Value
Publication number	US-10633518-B2
Application number	US-201715716737-A
Country	US
Kind code	B2
Filing date	Sep 27, 2017
Priority date	Sep 27, 2016
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

A surface treatment agent for metal material may include a compound (A) that is obtained by modifying a silicic acid (a) with a hydrolysate (b) of an epoxy group-having silane coupling agent, a silicic acid (B) represented by M2O.SiO2 (wherein a mass ratio of M2O to SiO2 is 0.1 to 1 and M represents an alkali metal), and water. A mass ratio (B/A) of the silicic acid (B) to the compound (A) is 1.1 to 17.9.

First claim

The invention claimed is:

1. A surface treatment agent for metal material comprising:
a compound (A) obtained by modifying a silicic acid (a) with a hydrolysate (b) of an epoxy group-having silane coupling agent;
a silicic acid (B) represented by M 2 O·SiO 2 ; and
water,
wherein a mass ratio (B/A) of the silicic acid (B) to the compound (A) is within a range of 1.1 to 17.9, and
wherein a mass ratio (M 2 O/SiO 2 ) of M 2 O to SiO 2 in the silicic acid (B) is within a range of 0.1 to 1 and M represents an alkali metal.

2. The surface treatment agent for metal material according to claim 1 , wherein the hydrolysate (b) of the epoxy group-having silane coupling agent is obtained by ring-opening the epoxy group-having silane coupling agent with a carboxylic acid, and the surface treatment agent for metal material contains the carboxylic acid.

3. The surface treatment agent for metal material according to claim 1 , wherein a mass ratio (a/b) of the silicic acid (a) to the hydrolysate (b) of the epoxy group-having silane coupling agent is within a range of 0.07 to 6.36.

4. The surface treatment agent for metal material according to claim 1 , wherein the agent is for a metal material that is used for an electronic component and a micro device component.

5. A method of producing a surface treatment agent for metal material according to claim 1 , comprising:
adding a silicic acid (a), an epoxy group-having silane coupling agent, an acid catalyst (C) to water and mixing them to form an aqueous dispersion containing a compound (A) obtained by modifying the silicic acid (a) with a hydrolysate (b) of the epoxy group-having silane coupling agent; and
adding the aqueous dispersion and a silicic acid (B) represented by M 2 O.SiO 2 to water and mixing them,
wherein a mass ratio (B/A) of the silicic acid (B) to the compound (A) is within a range of 1.1 to 17.9, and
wherein a mass ratio (M 2 O/SiO 2 ) of M 2 O to SiO 2 in the silicic acid (B) is within a range of 0.1 to 1 and M represents an alkali metal.

6. The method of producing a surface treatment agent for metal material according to claim 5 , wherein the hydrolysate (b) of the epoxy group-having silane coupling agent is obtained by ring-opening the epoxy group-having silane coupling agent with a carboxylic acid, and the surface treatment agent for metal material contains the carboxylic acid.

7. The method of producing a surface treatment agent for metal material according to claim 5 , wherein the mass ratio (a/b) of the silicic acid (a) to the hydrolysate (b) of the epoxy group-having silane coupling agent is within a range of 0.07 to 6.36.

8. The method of producing a surface treatment agent for metal material according to claim 5 , wherein the agent is for a metal material that is used for an electronic component and a micro device component.

9. A metal material having a surface treatment coating, the coating obtained by bringing the surface treatment agent for metal material according to claim 1 into contact with a metal material.

10. A method of producing a metal material having a surface treatment coating comprising bringing the surface treatment agent for metal material according to claim 1 into contact with a metal material.

11. The surface treatment agent for metal material according to claim 2 , wherein a mass ratio (a/b) of the silicic acid (a) to the hydrolysate (b) of the epoxy group-having silane coupling agent is within a range of 0.07 to 6.36.

12. The surface treatment agent for metal material according to claim 2 , wherein the agent is for a metal material that is used for an electronic component and a micro device component.

13. The surface treatment agent for metal material according to claim 3 , wherein the agent is for a metal material that is used for an electronic component and a micro device component.

14. The surface treatment agent for metal material according to claim 11 , wherein the agent is for a metal material that is used for an electronic component and a micro device component.

15. The method of producing a surface treatment agent for metal material according to claim 6 , wherein the mass ratio (a/b) of the silicic acid (a) to the hydrolysate (b) of the epoxy group-having silane coupling agent is within a range of 0.07 to 6.36.

16. The method of producing a surface treatment agent for metal material according to claim 6 , wherein the agent is for a metal material that is used for an electronic component and a micro device component.

17. The method of producing a surface treatment agent for metal material according to claim 7 , wherein the agent is for a metal material that is used for an electronic component and a micro device component.

18. The method of producing a surface treatment agent for metal material according to claim 15 , wherein the agent is for a metal material that is used for an electronic component and a micro device component.

19. The surface treatment agent for metal material according to claim 1 , wherein the mass ratio (B/A) of the silicic acid (B) to the compound (A) is within a range of 1.1 to 8.9.

20. The surface treatment agent for metal material according to claim 1 , wherein the surface treatment agent is a dried coating layer provided on the metal material.

Assignees

• Nihon Parkerizing

Inventors

• Uchida Junichi
• Oura Ichiro

Classifications

• C08K3/36

  Silica · CPC title

• C23C22/05 Primary

  using aqueous solutions · CPC title

• C09D1/02

  alkali metal silicates · CPC title

• C23C2222/20

  Use of solutions containing silanes · CPC title

• C09D5/08

  Anti-corrosive paints · CPC title