초록

Disclosed are antimicrobial coating compositions. These coating compositions comprise (a) a film-forming resin; (b) a porous solid comprising pores having anti-microbial metal ions disposed therein; and (c) an onium compound.

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1. A coating composition comprising: (a) a film-forming resin;(b) a porous solid comprising an ion-exchange ceramic comprising pores having anti-microbial metal ions disposed therein; and(c) a halogen ion-containing onium compound having a minimum molecular diameter according to the equation: D=2*((

1. A coating composition comprising: (a) a film-forming resin;(b) a porous solid comprising an ion-exchange ceramic comprising pores having anti-microbial metal ions disposed therein; and(c) a halogen ion-containing onium compound having a minimum molecular diameter according to the equation: D=2*((0.75*V)π)1/3 where D is the minimum molecular diameter and V is the van der Waals volume of the molecule, and the minimum molecular diameter is greater than the size of the pores having anti-microbial metal ions disposed therein, wherein (b) and (c) are present in amounts such that the composition, when applied onto a substrate and cured, provides a cured coating that exhibits UV color stability comparable to the UV color stability exhibited by the same composition that does not include (b) and (c), andwherein the halogen counterion-containing onium compound is a monomeric quaternary ammonium salt having the formula: R4N+X− where each R is a hydrocarbon and each may be the same or different, and X is a halogen atom. 2. The coating composition of claim 1, wherein (b) and (c) are present in amounts such that the molar ratio of halogen atoms to metal-containing ions in the coating composition is at least 1:1. 3. The coating composition of claim 1, wherein (b) and (c) are present in amounts such that the molar ratio of halogen atoms to metal-containing ions in the coating composition is at least 2:1. 4. The coating composition of claim 1, wherein the porous solid comprises zeolite. 5. The coating composition of claim 1, wherein the anti-microbial metal ions comprise silver ions. 6. The coating composition of claim 1, wherein the halogen ion-containing onium compound has a minimum molecular diameter at least 50% greater than the size of the pores having anti-microbial metal ions disposed therein. 7. The coating composition of claim 1, wherein the halogen counterion-containing onium compound comprises a bromine ion. 8. The coating composition of claim 1, wherein the quaternary ammonium salt comprises a quaternary ammonium bromide. 9. The coating composition of claim 8, wherein the quaternary ammonium bromide comprises tetrahexylammonium bromide. 10. The coating composition of claim 1, wherein the porous solid comprises zeolite free of ions that do not have an anti-microbial effect and the anti-microbial metal ions consist of silver ions, and wherein R is a saturated aliphatic hydrocarbon where the minimum molecular diameter is at least 100% greater than the size of the pores having anti-microbial metal ions disposed therein. 11. The coating composition of claim 1, wherein the minimum molecular diameter is from 4 Å to 20 Å and the size of the pores having anti-microbial metal ions disposed therein is no more than 10 Å.