'COATED ARTICLE, COATED ROOF BEAD, COATING COMPOSITION AND METHODS FOR MAKING A COATED ARTICLE AND A ROOF COATED'

摘要

In one aspect, the present invention is directed to a coating composition. The coating composition comprises photocatalytic particles and an alkali metal silicate binder comprising a boric acid, borate, or combination thereof. In another aspect, the present invention is directed to a coated article. The coated article has a photocatalytic coating with improved durability on its external surface that is formed from the aforesaid coating composition.