DURABLE ANTI-FUNGAL AND ALGAE RESISTANT COATINGS
An anti-fungal and/or algae resistant coating applied to/on a substrate that further exhibits durability. The coating including less than 0.01 wt % heavy metal containing components and less than 0.01 wt % fluoro containing components.
1 . An anti-fungal and/or algae resistant clear coating comprising:
(a) a clear film;
(b) a biocide dispersed within the clear film in an effective amount to prevent and/or reduce fungal and/or algal growth on and within the anti-fungal and/or algae resistant coating; and
(c) a stabilizing agent dispersed within the clear film.
2 . The anti-fungal and/or algae resistant clear coating according to claim 1 , wherein the coating includes less than 0.01 wt % heavy metal containing components and less than 0.01 wt % fluoro containing components.
3 . The anti-fungal and/or algae resistant clear coating according to claim 1 , wherein the clear film is an organic, inorganic hybrid resin.
4 . The anti-fungal and/or algae resistant clear coating according to claim 1 , wherein the clear film comprises a siloxane component and organic component.
5 . The anti-fungal and/or algae resistant clear coating according to claim 1 , wherein the clear film comprises a polysiloxane-acrylic resin and polysiloxane-urethane resin.
6 . The anti-fungal and/or algae resistant clear coating according to claim 5 , wherein the polysiloxane-acrylic resin comprises a shell-core configuration in which the polysiloxane is encapsulated by the acrylic.
7 . The anti-fungal and/or algae resistant clear coating according to claim 3 , wherein the clear film is an organic, inorganic hybrid film at a concentration of 40 wt % to 95 wt % of the anti-fungal and/or algae resistant clear coating.
8 . The anti-fungal and/or algae resistant clear coating according to claim 1 , wherein the biocide comprises encapsulated and non-encapsulated biocides.
9 . The anti-fungal and/or algae resistant clear coating according to claim 8 , wherein the encapsulated biocide is configured to release the biocide from the anti-fungal and/or algae resistant coating for 6 months to 5 years.
10 . The anti-fungal and/or algae resistant clear coating according to claim 8 , wherein the encapsulated biocide comprises 0.2 wt % to 7.5 wt % of the anti-fungal and/or algae resistant clear coating.
11 . The anti-fungal and/or algae resistant clear coating according to claim 10 , wherein the non-encapsulated biocide comprises 0.2 wt % to 6 wt % of the anti-fungal and/or algae resistant clear coating.
12 . The anti-fungal and/or algae resistant clear coating according to claim 8 , wherein the encapsulated and non-encapsulated biocide comprise at least a carbamate having biocidal activity.
13 . The anti-fungal and/or algae resistant clear coating according to claim 12 , wherein the encapsulated and non-encapsulated biocide comprise at least a butylcarbamate having biocidal activity.
14 . The anti-fungal and/or algae resistant clear coating according to claim 12 , wherein the non-encapsulated biocide further comprises an aromatic biocide.
15 . The anti-fungal and/or algae resistant clear coating according to claim 14 , wherein the aromatic biocide comprises an aromatic urea compound and an aromatic carbamate.
16 . The anti-fungal and/or algae resistant clear coating according to claim 14 , wherein the aromatic biocide comprises 3-(3,4-dichlorophenyl)-1,1-dimethylurea, methyl 1H-benzimidazol-2-ylcarbamate, or any combination thereof.
17 . The anti-fungal and/or algae resistant clear coating according to claim 1 , wherein the stabilizing agent comprises 0.3 wt % to 22 wt % of the anti-fungal and/or algae resistant clear coating.
18 . The anti-fungal and/or algae resistant clear coating according to claim 1 , wherein the stabilizing agent comprises an ultraviolet (UV) stabilizing agent.
19 . The anti-fungal and/or algae resistant clear coating according to claim 18 , wherein the UV stabilizing agent comprises a first UV stabilizing agent, a second UV stabilizing agent, or a combination thereof.
20 . The anti-fungal and/or algae resistant clear coating according to claim 19 , wherein the first UV stabilizing agent is a heterocycle.
21 . The anti-fungal and/or algae resistant clear coating according to claim 20 , wherein the first UV stabilizing agent is a triazine compound.
22 . The anti-fungal and/or algae resistant clear coating according to claim 19 , wherein the first UV stabilizing agent comprises 2-[4-[(2-Hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[4-[(2-Hydroxy-3-tridecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, or any combination thereof.
23 . The anti-fungal and/or algae resistant clear coating according to claim 19 , wherein the second UV stabilizing agent comprises an ultraviolet (UV) stabilizing agent that includes a hindered amine and/or heterocyclic.
24 . The anti-fungal and/or algae resistant clear coating according to claim 23 , wherein the second UV stabilizing agent comprises hindered amine light stabilizers (HALS).
25 . The anti-fungal and/or algae resistant clear coating according to claim 23 , wherein the second UV stabilizing agent comprises a derivative of tetramethylpiperidine.
26 . The anti-fungal and/or algae resistant clear coating according to claim 19 , wherein the first and second UV stabilizing agents are present at a ratio ranging from 1:1 to 5:1 relative to one another.
27 . The anti-fungal and/or algae resistant clear coating according to claim 26 , wherein the anti-fungal and/or algae resistant coating includes the biocide and the clear film at a ratio ranging from 1:3 to 1:60 relative to one another.
28 . The anti-fungal and/or algae resistant clear coating according to claim 27 , wherein the anti-fungal and/or algae resistant clear coating includes the non-encapsulated biocide and the encapsulated biocide at a ratio ranging from 3:1 to 1:7 relative to one another.
29 . The anti-fungal and/or algae resistant clear coating according to claim 28 , the anti-fungal and/or algae resistant clear coating includes the polysiloxane-acrylic resin and the polysiloxane-urethane resin at a ratio ranging from 9:1 to 1.1:1 relative to one another.
30 . A substrate having the anti-fungal and/or algae resistant clear coating according to claim 1 applied thereon;
wherein the substrate is porous or non-porous material and/or the substrate is a non-functionalized substrate, an electrostatically neutral substrate, or a combination thereof; wherein the anti-fungal and/or algae resistant clear coating retains 100% gloss retention after 500 hours of UV exposure, 95% gloss retention after 1000 hours of UV exposure, 93% gloss retention after 1500 hours of UV exposure, and 93% gloss retention after 2000 hours of UV exposure.