Metal surface coating composition and terminal-equipped covered electrical wire using same

• US 10,079,439 B2
• Filed: 01/29/2015
• Issued: 09/18/2018
• Est. Priority Date: 02/19/2014
• Status: Active Grant

• Current Assignee: Kyushu University, Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation)
• Original Assignee: Kyushu University, Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation)
• Inventors: Hase, Tatsuya, Nakashima, Kazuo, Mizoguchi, Makoto
• Primary Examiner(s): Matzek, Matthew D
• Application Number:
  US15/119,743
• Publication Number:
  US 20170062954A1
• Time in Patent Office: 1,328 Days
• Field of Search: 174 681, 174 98, 174110 R, 174110 SR, 174176, 428357
• CPC Class Codes: C08K 5/521 Esters of phosphoric acids, e.g. of H3PO4
• CPC Class Codes: C08L 57/00 Compositions of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C09D 191/00 Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof polishing compositions, ski waxes C09G
• CPC Class Codes: C09D 201/00 Coating compositions based on unspecified macromolecular compounds
• CPC Class Codes: C09D 5/08 Anti-corrosive paints
• CPC Class Codes: C09D 7/40 Additives
• CPC Class Codes: C09D 7/63 organic
• CPC Class Codes: C10M 137/06 Metal salts
• CPC Class Codes: C10M 2223/042 Metal salts thereof
• CPC Class Codes: C10N 2030/12 Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
• CPC Class Codes: C10N 2040/32 Wires, ropes or cables lubricants
• CPC Class Codes: H01R 13/03 characterised by the material, e.g. plating, or coating materials
• CPC Class Codes: H01R 4/185 combined with a U-shaped insulation-receiving portion
• CPC Class Codes: H01R 4/58 characterised by the form or material of the contacting members H01R4/01 takes precedence
• CPC Class Codes: H01R 4/70 Insulation of connections end caps H01R4/22

Abstract

A composition for a metal surface coating that does not require a posttreatment such as heating, has flexibility to be able to follow deformation of a member to be coated, hardly peels off from a metal surface, and can be used for the purpose of corrosion protection, and a terminal-equipped covered electric wire using the same. The composition contains an adduct and a base oil. The adduct contains an acidic phosphate ester consisting of one or more kinds of compounds represented by General Formulae (1) and (2), and a metal, P(═O)(—OR₁)(—OH)₂ . . . (1), P(═O)(—OR₁)₂(—OH) . . . (2), where R₁ represents a hydrocarbon group having 4 to 30 carbon atoms.

Claims

1. A terminal-equipped covered electric wire comprising a terminal metal fitting and an insulated electric wire, the terminal metal fitting being connected to an end of a conductor of the insulated electric wire, wherein an electric connecting section between the terminal metal fitting and the electric wire conductor is covered with a composition for a metal surface coating, the composition comprising an adduct and a base oil, the adduct comprising:

an acidic phosphate ester comprising one or more kinds of compounds represented by General Formulae (1) and (2); and

a metal,

P(═

O)(—

OR₁)(—

OH)₂ 

 

(1)

P(═

O)(—

OR₁)₂(—

OH) 

 

(2),

where R₁ represents a hydrocarbon group having 4 to 30 carbon atoms.

2. The terminal-equipped covered electric wire according to claim 1, wherein R₁ has one or more branched chain structures, or one or more carbon-carbon double bond structures in the structure of the hydrocarbon group having 4 to 30 carbon atoms.

3. The terminal-equipped covered electric wire according to claim 1, wherein R₁ comprises at least one selected from the group consisting of an oleyl group, an isostearyl group, a 2-ethylhexyl group, a butyloctyl group, an isomyristyl group, an isocetyl group, a hexyldecyl group, an octyldecyl group, an octyldodecyl group, and an isobehenyl group.

4. The terminal-equipped covered electric wire according to claim 1, wherein the metal that forms the adduct with the acidic phosphate ester is a divalent or higher-valent metal.

5. The terminal-equipped covered electric wire according to claim 1, wherein the metal that forms the adduct with the acidic phosphate ester comprises at least one metal selected from the group consisting of an alkali metal, an alkaline earth metal, aluminum, titanium, and zinc.

6. The terminal-equipped covered electric wire according to claim 5, wherein the alkaline earth metal comprises at least one metal selected from the group consisting of calcium and magnesium.

7. The terminal-equipped covered electric wire according to claim 1, wherein the composition for a metal surface coating has a pH of four or higher.

8. The terminal-equipped covered electric wire according to claim 1, wherein a percentage of the base oil to a total of the adduct comprising the acidic phosphate ester and the metal and the base oil is within the range of 30 to 99 mass %.

9. The terminal-equipped covered electric wire according to claim 1, wherein the base oil has fluidity within the temperature range of 20 to 200°

C.

10. The terminal-equipped covered electric wire according to claim 1, wherein a base material of the terminal metal fitting comprises one of copper and a copper alloy.

11. The terminal-equipped covered electric wire according to claim 10, wherein a surface of the base material of the terminal metal fitting is plated with one of tin, nickel, and gold.