CPC C09D 5/028 (2013.01) [C08F 220/283 (2020.02); C08F 220/56 (2013.01); C08K 3/013 (2018.01); C08K 3/34 (2013.01); C08K 5/0025 (2013.01); C08K 5/17 (2013.01); C08K 5/544 (2013.01); C08K 9/06 (2013.01); C09D 7/63 (2018.01)] | 13 Claims |
1. A one-component waterborne coating composition comprising: a stable aqueous dispersion of a mixture of a reactive binder polymer, a plurality of functionalized pigment particles, and a crosslinker; wherein the reactive binder polymer is derived from at least one monomer having at least one reactive functional group; wherein each functionalized pigment particle comprises a base pigment having one or more functional linkages, each functional linkage capable of binding to one or more reactive functional groups on the reactive binder polymer to bond the functionalized pigment particle to the binder polymer either directly by a bond between functional linkage and reactive functional group or via the crosslinker: wherein the functional linkage is an aminosilane with a siloxy group of the aminosilane capable of bonding with the base pigment, and an amino group of the aminosilane capable of bonding with one of the at least one reactive functional groups of the binder polymer; and wherein: (a) the crosslinker is selected from the group consisting of a diamine, a triamine, a polymeric amine, and mixtures thereof; and (b) a molar ratio of reactive functional group to total amine, wherein total amine is defined as the combined molar amounts of the crosslinker and the aminosilane functional linkage in the coating composition, is in the range of about 0.3:1 to about 2:1; and (c) a molar ratio of the crosslinker to the aminosilane in the coating composition is in the range of about 1.5:1 to about 5:1.
|