Methods of preparing self-decontaminating surfaces using reactive silanes, triethanolamine and titanium anatase sol
An anti-microbial coating formulation consisting essentially of triethanolamine and a silane.
1. A method of preparing a self-decontaminating surface on a substrate, said method comprising:
(a) disposing onto a substrate a composition comprising:
(i) an organosilane of structure (1),
wherein R 1 , R 2 , and R 3 are independently —OH or —O-Alkyl; and R 4 is selected from the group consisting of —OH, —O-Alkyl, γ-chloropropyl-, γ-aminopropyl-, and quaternary ammonium salt-substituted Alkyl;
(ii) triethanolamine; and
(iii) methanol;
(b) allowing at least about 90 weight percent of the methanol to evaporate from the composition; and
(c) casting an aqueous mixture of peroxotitanium acid solution and peroxo-modified anatase sol over said composition to produce said self-decontaminating surface.
2. The method of claim 1 , wherein said organosilane is γ-chloropropylsilanetriol.
3. The method of claim 2 , wherein said substrate is a decorative product composed of several layers of kraft paper impregnated with melamine thermosetting resin and topped with a decorative layer protected by melamine, then compressed and cured with heat to make a hard, durable surface.
4. The method of claim 3 , wherein said self-decontaminating surface exhibits at least about a 1.5 log reduction in murine norovirus 4 hours after initial inoculation of the surface with murine norovirus.
5. The method of claim 1 , wherein said organosilane is γ-aminopropylsilanetriol.
6. The method of claim 5 , wherein said substrate is a decorative product composed of several layers of kraft paper impregnated with melamine thermosetting resin and topped with a decorative layer protected by melamine, then compressed and cured with heat to make a hard, durable surface.
7. The method of claim 6 , wherein said self-decontaminating surface exhibits about a 1.0 log reduction in murine norovirus 4 hours after initial inoculation of the surface with murine norovirus.
8. The method of claim 2 , wherein said substrate is stainless steel.
9. The method of claim 8 , wherein said self-decontaminating surface exhibits about a 2.58 log reduction in murine norovirus 6 hours after initial inoculation of the surface with murine norovirus.
10. The method of claim 5 , wherein said substrate is stainless steel.
11. The method of claim 10 , wherein said self-decontaminating surface exhibits at least about a 2.91 log reduction in murine norovirus 6 hours after initial inoculation of the surface with murine norovirus.
12. A polymer formed by the method of claim 1 , wherein said polymer has a repeating unit of the structure (10),
13. A polymer formed by the method of claim 1 , wherein said polymer has a repeating unit of the structure (11),
14. A polymer formed by the method of claim 1 , wherein said polymer has a repeating unit of the structure (12),
15. The method of claim 1 , wherein said organosilane is tetraethylorthosilicate.
16. A polymer formed by the method of claim 15 , wherein said polymer has a repeating unit of the structure (14),