Metal surface coating composition and terminal fitted electric wire
View Patent ↗A metal surface coating composition including a high-consistency material containing a lubricant base oil and an amide compound, and a composition of a phosphorus compound containing one or more compounds represented by the below formulae and a metal, wherein the ratio (a/b) of the number of amide groups (a) and the number of acidic groups (b) is within a range of 1.1 to 6.0: where X 1 to X 7 represent an oxygen atom or a sulfur atom, R 11 to R 13 represent a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms, wherein at least one of them is a hydrocarbon group having 1 to 30 carbon atoms, and R 14 to R 16 represent a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms wherein at least one of them is a hydrocarbon group having 1 to 30 carbon atoms.
1. A terminal fitted electric wire, comprising:
a terminal,
an electric conductor, and
an electric connection part formed between the terminal and the electric conductor, and covered with a metal surface coating composition comprising:
a high-consistency material comprising a lubricant base oil and an amide compound, and
a composition of a phosphorus compound comprising one or more compounds represented by the general formulae (1) and (2) and a metal, wherein the ratio (a/b) of the number of amide groups (a) and the number of acidic groups (b) is within a range of 1.1 to 6.0, and wherein the amide compound has a melting point of 120° C. or higher and comprises one or more compounds represented by the following general formulae (3) to (5):
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;
[Chem. 3]
R 21 —CO—NH—R 22 (3)
[Chem. 4]
R 23 —CO—NH—Y 31 —NH—CO—R 24 (4)
[Chem. 5]
R 25 —NH—CO—Y 32 —CO—NH—R 26 (5)
where R 21 to R 26 each represent independently a saturated or unsaturated linear hydrocarbon group having 5 to 25 carbon atoms, R 22 may be hydrogen, and Y 31 and Y 32 represent a divalent hydrocarbon group having 1 to 10 carbon atoms selected from an alkylene group and a phenylene group having 1 to 10 carbon atoms, or an alkylphenylene group having 7 to 10 carbon atoms.
2. The terminal fitted electric wire according to claim 1 , wherein the composition of the phosphorus compound and the metal is made of at least one of a metal hydroxide and a metal carboxylate, and the phosphorus compound.
3. The terminal fitted electric wire according to claim 2 , wherein the metal carboxylate is a metal salicylate.
4. The terminal fitted electric wire according to claim 1 , wherein the amide compound is a fatty acid amide having a melting point within a range of 120° C. to 200° C.
5. The terminal fitted electric wire 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 the structure of the hydrocarbon groups having 1 to 30 carbon atoms.
6. The terminal fitted electric wire according to claim 1 , wherein the metal forming the composition together with the phosphorus compound is at least one selected from alkali metals, alkaline earth metals, aluminum, titanium, and zinc.
7. The terminal fitted electric wire according to claim 1 , wherein the composition of the phosphorus compound and the metal has a molecular weight of 3000 or lower.