Method for replenishing or introducing light stabilizers

摘要

This invention is a method for incorporating light stabilizers into a polymeric material such as coatings, paints and plastics, which comprises the steps of applying a coating of a composition comprising a light stabilizer on the polymeric material and allowing the coating to remain in contact with the polymeric material for a time sufficient to cause the light stabilizer to diffuse into the polymeric material. No active heating of the polymeric substrate is required. Ambient conditions encountered in natural outdoor weathering will suffice to allow diffusion of stabilizers. Other additives affecting the aging or performance of the polymeric material can also be incorporated by this method.