US5021489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-inhibiting coating composition
Assignee: United States Department of the Navy
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Filing: 1990-03-01
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Granted: 1991-06-04
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Expires: 2010-03-01
Abstract
Abstract This invention relates to corrosion-inhibiting compositions and particularly to compositions capable of forming films on metal substrates to protect said metal from corrosion. The film-forming compositions which are capable of displacing moisture from the metal surface comprises effective amounts of an acrylic resin, a silicone resin and a copolymer derived from a silicone and alkyd monomers. These resins together with effective amounts of an organic phosphate and a sulfonate are used in combination with lower molecular weight alcohols and at least one solvent.
Inventors
- 👤 Walter E. Knight
- 👤 Kenneth G. Clark
- 👤 David L. Gauntt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:06
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/08; C09D183/00; C09D183/04; C09D5/00; C09D5/08; C08; C08L; C08L2205/00; C08L2205/02; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
A water displacing corrosion-inhibiting composition which comprises from about 10 to 35 parts by weight of an acrylic resin, 10 to 35 parts by weight of a silicone resin, 2 to 35 parts by weight of a silicone-alkyd copolymer resin, 0.5 to 5.0 parts by weight of an organic phosphate, 1.0 to 10 parts by weight of a sulfonate, 5 to 40 parts by weight of at least one lower molecular weight alcohol, and 10 to 50 parts by weight of at least one organic solvent.
Claim 2
Dependent Claim
86 words
A water displacing corrosion-inhibiting composition which comprises from about 10 to 35 parts by weight of an acrylic resin, 10 to 35 parts by weight of a silicone resin, 2 to 35 parts by weight of a silicone-alkyd copolymer resin, 0.5 to 5.0 parts by weight of an organic phosphate, 1.0 to 10 parts by weight of a sulfonate, 5 to 40 parts by weight of at least one lower molecular weight alcohol, and 10 to 50 parts by weight of at least one organic solvent.
Claim 3
Dependent Claim
27 words
The composition of claim 1 further characterized in that the organic phosphate is an alkyl ammonium phosphate and the sulfonate is an alkaline earth metal petroleum sulfonate.
Claim 4
Dependent Claim
20 words
The composition of claim 2 further characterized in that the lower molecular weight alcohol has 3 to 5 carbon atoms.
Claim 5
Dependent Claim
16 words
The composition of claim 3 further characterized in that the organic solvent comprises an aromatic hydrocarbon.
Claim 6
Dependent Claim
23 words
The composition of claim 4 further characterized in that the organic solvent comprises a mixture of an aromatic hydrocarbon and a glycol ether.
Claim 7
Dependent Claim
22 words
The composition of claim 5 further characterized in that the organic solvent comprises a mixture of cellosolve acetate and an aromatic hydrocarbon.
Claim 8
Dependent Claim
107 words
A process for protecting metal surfaces against corrosion by displacing moisture and forming a protective coating thereon which comprises applying to said moisture covered metal surfaces a corrosion-inhibiting composition comprising from about 10 to 35 parts by weight of an acrylic resin, 10 to 35 parts by weight of a silicone resin, 2 to 35 parts by weight of a silicone-alkyd copolymer resin, 0.5 to 5.0 parts by weight of an organic phosphate, 1.0 to 10 parts by weight of a sulfonate, 5 to 40 parts by weight of a lower molecular weight alcohol, and 10 to 50 parts by weight of at least one organic solvent.
Claim 9
Dependent Claim
107 words
A process for protecting metal surfaces against corrosion by displacing moisture and forming a protective coating thereon which comprises applying to said moisture covered metal surfaces a corrosion-inhibiting composition comprising from about 10 to 35 parts by weight of an acrylic resin, 10 to 35 parts by weight of a silicone resin, 2 to 35 parts by weight of a silicone-alkyd copolymer resin, 0.5 to 5.0 parts by weight of an organic phosphate, 1.0 to 10 parts by weight of a sulfonate, 5 to 40 parts by weight of a lower molecular weight alcohol, and 10 to 50 parts by weight of at least one organic solvent.
Claim 10
Dependent Claim
22 words
The process of claim 7 further characterized in that the sulfonate is an alkaline earth metal sulfonate and the alcohol comprises isopropanol.
Claim 11
Dependent Claim
32 words
The process of claim 8 further characterized in that the organic phosphate is an alkyl ammonium phosphate and the organic solvent comprises an aliphatic or an aromatic hydrocarbon and a glycol ether.
Claim 12
Dependent Claim
24 words
The process of claim 7 further characterized in that the coating formed on the surface of the metal is air dried at room temperatures.
References Cited (Backward Citations)
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JPS51109390A
Cited
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Cited
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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) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |