Patent ID: 6930143

Claim:
A latex coating comprising (a) from about 30% to about 90% by weight of water; (b) from about 10% to about 70% by weight of an acrylic polymer that consists essentially of 20% to 80% by weight of recurring units of t-butyl acrylate or methacrylate, 1% to 20% by weight of recurring units of acrylic or methacrylic acid, and up to 79% of recurring units of a C 1 -C 10 alkyl acrylate or methacrylate having a Tg lower than 25° C.; (c) from about 0.2% to about 10% by weight of a emulsifying agent; (d) up to 20% by weight of an organic solvent; (e) up to 60% by weight of a pigment; and (f) from 1 to 30% by weight of a crosslinker, wherein the coating has improved moisture and corrosion resistance.