Water-displacing paint
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsCharles R. Hegedus, Kenneth G. Clark
Life of this patent
Estimating the term…
Abstract
A water-displacing paint is disclosed for coating metallic surfaces in hu environments to prevent corrosion. The paint comprises controlled proportions of a silicone alkyd resin to serve as a binder and physical barrier, solvents including ethyl acetate, aromatic mineral spirits and 1,1,1 trichlorotrifluorethane for ensuring water immiscibility, a petroleum sulfonate to inhibit corrosion and aid surface absorption, and an organo-titanate of isopropyl tri-titanate to promote surface adhesion. Selected amounts of titanium dioxide and zinc molybdate are included as pigments in one effective example of the paint to provide it a white color. Alternate colors may be produced conventionally by adding standard tinting pigments in amounts sufficient to yield the desired color.
Claims11
A water-displacing paint for coating metallic surfaces to prevent corrosion, comprising:
- a binder consisting essentially of a silicone alkyd resin having a solids content of about 50 weight percent, a minimum phthalic anhydride content of about 20 weight percent, and a minimum oil content of about 25 weight percent;
- solvents including ethyl acetate, aromatic mineral spirits and 1,1,1 trichlorotrifluoroethane;
- a corrosion inhibitor consisting essentially of a petroleum sulfonate having a low molecular weight sulfonate;
- an adhesion promotor consisting essentially of an organo-titanate of the monalkoxy type, said organo-titanate being isopropyl, tri(N-ethylamino-ethylamino) titanate;
- and
- pigments in sufficient amounts to impart a desired color to the paint.
A water-displacing paint for coating metallic surfaces to prevent corrosion, comprising:
- about 40 weight percent of a binder consisting essentially of a silicone alkyd resin having a solids content of about 50 weight percent, a minimum phthalic anhydride content of about 20 weight percent, and a minimum oil content of about 25 weight percent;
- about 40 weight percent of solvents including about 20 weight percent of ethyl acetate, about 12 weight percent of aromatic mineral spirits, and about 8 weight percent of 1,1,1 trichlorotrifluoroethane;
- about 2.0 to 2.5 weight percent of a corrosion inhibitor consisting essentially of a petroleum sulfonate having a low molecular weight;
- about 2 weight percent of an adhesion promotor consisting essentially of isopropyl, tri(N-ethylamino-ethylamino) titanate;
- and
- a sufficient amount of pigment material to impart a desired color to the paint.
Dependencies are inferred from the claim text.