Quote:
Originally Posted by klpauba
Doesn't the automotive clear coat protect the base/color coat from UV?
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Urethanes and polyurethane clearcoat are in general used in conjunction with metallic finishes, where the look of the paint is enhanced by the presence of fine metallic grains which reflect sparkles of light. Clearcoat makes metallic paint more robust in several ways, besides protecting it the clear coat doesn't show scratches as badly as the metallic paint alone.
If you are not using a metallic finish, it makes more sense for the ultraviolet resistance to be in the layer of white paint alone, which contains lots of titanium dioxide pigment to reflect that ultraviolet away.
Conventional automobile clearcoat is damaged by abrasive cleaning. In general we can use rubbing and polishing compound on plain white paint.
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