Water based silicone coating compositions
AssigneeHamilton Sundstrand Corporation
InventorsMarc E. Gage, David J. Grulke, Blair A. Smith
Life of this patent
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Abstract
A water-based silicone coating composition comprises (a) about 39.6 wt % to about 67.3 wt % of a silicone resin emulsion; (b) about 8.3 wt % to about 19.2 wt % of a non-water reactive leafing filler material having a laminar structure; (c) about 0.05 wt % to about 3.0 wt % of a water soluble nonionic surfactant; (d) about 0.05 wt % to about 0.15 wt % of a minimally toxic biocide solution including at least one active biocide component effective against anaerobic sulfur-reducing bacteria; and (e) about 10.35 wt % to about 52.0 wt % of water. The sum of components a, b, c, d, and e total 100 wt % of the coating composition.
Claims20
A water-based silicone coating composition comprising:
- a. about 39.6 wt % to about 67.3 wt % of a silicone resin emulsion;
- b. about 8.3 wt % to about 19.2 wt % of a non-water reactive leafing filler material having a laminar structure;
- c. about 0.05 wt % to about 3.0 wt % of a water soluble nonionic surfactant;
- d. about 0.05 wt % to about 0.15 wt % of a minimally toxic biocide solution including at least one active biocide component effective against anaerobic sulfur-reducing bacteria;
- and
- e. about 10.35 wt % to about 52.0 wt % of water;
- wherein the sum of components a, b, c, d, and e total 100 wt %.
A method for producing a water-based silicone coating composition, the method comprising:
- blending water and a water soluble nonionic surfactant and allowing the surfactant to dissolve to form a water solution;
- adding a non-water reactive leafing filler material having a laminar structure to the water solution and allowing the filler material to fully disperse to form a dispersion;
- blending a silicone resin emulsion and water to form a diluted emulsion and allowing the diluted emulsion to fully dissolve;
- adding between about 0.05 wt % to about 0.15 wt % of a compatible, minimally toxic biocide solution including at least one active biocide component effective against anaerobic sulfur-reducing bacteria, and
- allowing the biocide solution to fully dissolve into the diluted emulsion;
- and
- adding the dispersion to the dissolved diluted emulsion to form an admixture and allowing the admixture to fully disperse.
A coating composition for forming a siloxane-based coating on a metal substrate, the composition containing a minimally toxic biocide solution that is chemically inert to the siloxane-based coating composition during storage, the biocide solution comprising an active biocide component effective against anaerobic, sulfur-fixing bacteria, and having a Hazard Management Information System (HMIS) health rating of less than 4 and a HMIS flammability rating of less than 2.
Dependencies are inferred from the claim text.