HIGH PERFORMANCE AQUEOUS COATING COMPOSITIONS

摘要

Coating compositions for cementitious substrates that include water, a multistage latex polymer and an optional silane coupling agent, wherein at least one of the monomers of the latex being capable of keto-hydrazide crosslinking with a component comprising a diamine, triamine or polyamine, such as a dihydrazide, trihydrazide, polyhydrazide, or mixtures theoreof. The latex polymer preferably is made from a silane-functional multistage latex polymer wherein at least one of the monomers is capable of keto-hydrazide crosslinking with a dihydrazide, and in some instances at least one of the monomers has at least one amide group. The compositions may be used to coat a variety of substrates, including wood and cement. Articles having the coating applied thereto are also provided.