Anticorrosive agent and terminal fitted electric wire

Patent metadata

Field	Value
Publication number	US-10622741-B2
Application number	US-201616060060-A
Country	US
Kind code	B2
Filing date	Dec 21, 2016
Priority date	Jan 7, 2016
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

An anticorrosive agent maintains its anticorrosion property when the agent is applied to the connection part of the terminal-fitted electric wire containing a covering member containing a plasticizer, and is exposed to high temperature. A terminal-fitted electric wire improves in anticorrosion property by using the agent. The anticorrosive agent contains a base oil (A) having a viscosity of 30 mPa·s or higher at 100° C., and a metal adsorbent (B) containing a phosphorus compound. The mass composition ratio (A):(B) of the base oil (A) and the metal adsorbent (B) is within a range of 50:50 to 98:2. In the terminal-fitted electric wire, an electric connection part between a terminal and an electric conductor is covered with a film of the anticorrosive agent.

First claim

The invention claimed is:

1. An anticorrosive agent comprising:
a base oil (A) having a viscosity of 100 mPa·s or higher at 100° C., and
a composition (B) comprising a phosphorus compound and a metal atom, wherein
a mass composition ratio (A):(B) of the base oil (A) and the composition (B) is within a range of 50:50 to 98:2, and
the phosphorus compound comprises one or more compounds represented by the general formulae (1) and (2):

where X 1 to X 7 each represent independently an oxygen atom or a sulfur atom, R 11 to R 13 each represent independently a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms, among which at least one is a hydrocarbon group having 1 to 30 carbon atoms, and R 14 to R 16 each represent independently a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atom among which at least one is a hydrocarbon group having 1 to 30 carbon atoms.

2. The anticorrosive agent according to claim 1 , wherein the phosphorus compound has one or more branched linear structures or one or more carbon-carbon double bond structures in a structure of the hydrocarbon groups.

3. The anticorrosive agent according to claim 1 , wherein the metal atom in the composition (B) is at least one selected from alkali metals, alkaline earth metals, aluminum, titanium, and zinc.

4. The anticorrosive agent according to claim 1 , wherein the composition (B) has a molecular weight of 3000 or lower.

5. A terminal-fitted electric wire, wherein an electric connection part between a terminal and an electric conductor is covered with the anticorrosive agent according to claim 1 .

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries
• Univ Kyushu

Inventors

• Takata Yutaka
• Hosokawa Takehiro
• Hase Tatsuya
• Oshiumi Naoyuki
• Yamashita Takuya
• Mizoguchi Makoto

Classifications

• H01B7/2806

  Protection against damage caused by corrosion · CPC title

• H01R4/185

  combined with a U-shaped insulation-receiving portion · CPC title

• H01R13/03 Primary

  characterised by the material, e.g. plating, or coating materials · CPC title

• C23F11/00

  Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent (adding inhibitors to mineral oil, fuels, or lubricants C10; adding inhibitors to pickling solutions C23G) · CPC title

• C08K5/521

  Esters of phosphoric acids, e.g. of H3PO4 · CPC title