An anti-smudge agent which is added to a coating composition for imparting smudge proof property with the coating composition, comprising a silicone resin containing a fluorine atom-containing organic group, which has a number average molecular weight of at least 1,000 and a molar ratio of the fluorine atom to the silicon atom (F/Si) of 3 to 50, said silicone resin being the one produced by hydrolyzing or condensing an organosilicon compound having a fluorine atom-containing organic group represented by the following general formula (I):
R1R2mSiX3-m (I)
wherein R1 is a fluorine atom-containing organic substituent, R2 is a substituted or unsubstituted alkyl group or phenyl group containing 1 to 10 carbon atoms, X is a hydrolyzable group or OH group, and m is 0 or 1; or a hydrolysate or a partial condensate thereof.
When the coating composition having the anti-smudge agent of the present invention blended therein is used for the coating, the surface will provided with the smudge proof property simultaneously with the functions realized by the base resin of the coating composition by one coating, and provision of two separate coatings is no longer necessary. This is economically by far advantageous.