Method using an organic solvent emulsion process for manufacturing oilgel capsules and method for manufacturing contact parts for a vehicle including the oilgel capsules

An emulsion composition comprising:

• oilgel capsules formed via mixing an oil and a gelator to provide an oilgel, and
• mixing the oilgel and an organic solvent containing a nonionic surfactant to provide the oilgel capsules having the oilgel encapsulated by the nonionic surfactant,
• wherein the oilgel capsules are dispersed in the organic solvent,
• wherein the organic solvent is not emulsified with the oil,
• wherein the organic solvent comprises dimethylacetamide, N-methyl-2-pyrrolidone, N-octyl pyrrolidone, N-phenyl pyrrolidone, dimethylformamide, dimethyl sulfoxide, methanol, ethanol, propanol, butanol, isopropanol, trifluoroacetic acid, 1,1,2,2-tetrachlorethane, m-Cresol, 2-chlorophenol, butyrolactone, γ-butyrolactone, diglycolamine, tetrahydrofuran, methyl ethyl ketone, sulfolane, derivatives thereof, and combinations thereof, and
• wherein the oilgel and the organic solvent containing the nonionic surfactant are mixed at a weight ratio in a range of 1:1 to 1:10.

A method for preparing a coating composition for preventing wear of machine parts, the method comprising:

• mixing an oil and a gelator to produce an oilgel;
• mixing the oilgel and an organic solvent containing a nonionic surfactant to produce oilgel capsules having the oilgel encapsulated by the nonionic surfactant wherein the oilgel capsules are dispersed in the organic solvent;
• preparing an emulsion composition comprising the oilgel capsules;
• and
• preparing the coating composition by mixing the emulsion composition and an overlay solution,
• wherein the overlay solution comprises a polymer, the organic solvent, and an additive,
• wherein the organic solvent is not emulsified with the oil,
• wherein the organic solvent comprises dimethylacetamide, N-methyl-2-pyrrolidone, N-octyl pyrrolidone, N-phenyl pyrrolidone, dimethylformamide, dimethyl sulfoxide, methanol, ethanol, propanol, butanol, isopropanol, trifluoroacetic acid, 1,1,2,2-tetrachlorethane, m-Cresol, 2-chlorophenol, butyrolactone, γ-butyrolactone, diglycolamine, tetrahydrofuran, methyl ethyl ketone, sulfolane, derivatives thereof, and combinations thereof, and
• wherein the oilgel and the organic solvent containing the nonionic surfactant are mixed at a weight ratio in a range of 1:1 to 1:10.