US4359543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-displacing paint
Assignee: UNITD STATES OF AMERICA NAVY, Secretary of
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Filing: 1981-07-30
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Granted: 1982-11-16
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Expires: 2001-07-30
Abstract
Abstract A water-displacing paint is disclosed for coating metallic surfaces in humid 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.
Inventors
- 👤 Charles R. Hegedus
- 👤 Kenneth G. Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:12
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/08; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08K5/56; C09D183/00; C09D183/10; C09D5/00; C09D5/08; Y; Y10; Y10S; Y10S524/00; Y10S524/903
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
105 words
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.
Claim 2
Dependent Claim
105 words
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.
Claim 3
Dependent Claim
28 words
A water-displacing paint according to claim 1, wherein: said petroleum sulfonate is selected from the group consisting of sodium petroleum sulfonate, barium petroleum sulfonate, and ammonium petroleum sulfonate.
Claim 4
Dependent Claim
15 words
A water-displacing paint according to claim 2 wherein said petroleum sulfonate is petroleum sodium sulfonate.
Claim 5
Dependent Claim
26 words
A water-displacing paint according to claim 1, wherein: said pigments consist essentially of titanium dioxide and zinc molybdate to impart a white color to the paint.
Claim 6
Dependent Claim
128 words
A water-displacing paint according to claim 4, wherein: said silicone alkyd resin constitutes about 39 to 43 weight percent of the paint; said solvents constitute about 38 to 43 weight percent of the paint, said ethyl acetate being about 16 to 19 weight percent, said mineral spirits being about 11 to 13 weight percent, and said trichlorotrifluoroethane being about 8 weight percent of the paint; said petroleum sulfonate constitutes about 2.0 to 2.5 weight percent of the paint; said isopropyl, tri (n-ethylamino-ethylamino) titanate constitutes about 2 weight percent of the paint; and said pigments constitute about 14 to 18 weight percent of the paint, said titanium dioxide being about 9.5 to 11.5 weight percent, and said zinc molybdate being about 4.5 to 6.5 weight percent of the paint.
Claim 7
Dependent Claim
24 words
A water-displacing paint according to claim 1, further comprising: a propellant consisting essentially of dichlorodifluoromethane for packaging the paint in a pressurized spray container.
Claim 8
Dependent Claim
134 words
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.
Claim 9
Dependent Claim
134 words
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.
Claim 10
Dependent Claim
17 words
A water-displacing paint according to claim 7, wherein: said pigment material includes titanium dioxide and zinc molybdate.
Claim 11
Dependent Claim
28 words
A water-displacing paint according to claim 7, wherein: said petroleum sulfonate is selected from the group consisting of sodium petroleum sulfonate, barium petroleum sulfonate, and ammonium petroleum sulfonate.
Claim 12
Dependent Claim
15 words
A water-displacing paint according to claim 9, wherein said petroleum sulfonate is sodium petroleum sulfonate.
Claim 13
Dependent Claim
24 words
A water-displacing paint according to claim 7, further comprising: a propellant consisting essentially of dichlorodifluoromethane for packaging the paint in a pressurized spray container.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |