PURPOSE: To provide a coating agent which can form an org. film excellent in pore-sealing, lubricating, and rustproofing effects on the surface of an electric contact without using an org. solvent and without polluting the environment by dispersing a base oil in water with a surfactant.
CONSTITUTION: This coating agent is an emulsion prepd. by dispersing a base oil in water with a surfactant. An org. film can be formed on the surface of an electric contact by only immersing the contact in the agent followed by drying. For example, 5 wt.% olefinic oil is added to 95 wt.% water followed by the addition of a small amt. of an org. amine surfactant and they are stirred to emulsify the oil, giving a coating agent capable of forming an org. amine film.
Next Patent: INK USING NATURAL DYE