US4098928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating underwater metal surfaces
Assignee: Akzo NV
•
Filing: 1976-10-12
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Granted: 1978-07-04
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Expires: 1996-10-12
Abstract
Abstract A coating system comprising a primer and a top coat is applied to a steel surface positioned under water or in the splash zone in such a way that successively carrier particles covered with the priming material are caused to collide with the steel surface and a top coat is applied to the steel surface thus treated.
Inventors
- 👤 Arie Noomen
- 👤 Leendert Anton Kik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:50
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/146; B05D7/50; B05D7/52; B05D7/54; B05D7/546
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
62 words
Method for applying a coating system comprising a primer and a top coat to a steel surface positioned underwater or in the splash zone in which the primer is applied to the steel surface as a result of a collision between the steel surface and carrier particles covered with priming material forming a hydrophobic coat, after which the top coat is applied.
Claim 2
Dependent Claim
62 words
Method for applying a coating system comprising a primer and a top coat to a steel surface positioned underwater or in the splash zone in which the primer is applied to the steel surface as a result of a collision between the steel surface and carrier particles covered with priming material forming a hydrophobic coat, after which the top coat is applied.
Claim 3
Dependent Claim
18 words
Method according to claim 1 in which the primer contains a resin-like binder compatible with the top coat.
Claim 4
Dependent Claim
13 words
Method according to claim 1 in which the primer contains an epoxy resin.
Claim 5
Dependent Claim
13 words
Method according to claim 1 in which the primer contains a coumarone-indene resin.
Claim 6
Dependent Claim
31 words
Method according to claim 1 in which the primer contains a film-forming alkaline mixture of an alkaline earth metal salt of an organic sulphonic acid and an alkaline earth metal carbonate.
Claim 7
Dependent Claim
14 words
Method according to claim 5 in which the alkaline earth salts are calcium salts.
Claim 8
Dependent Claim
14 words
Method according to claim 1 in which the primer also contains an anticorrosive compound.
Claim 9
Dependent Claim
22 words
Method according to claim 7 in which the anticorrosive compound is a metallic powder which is less noble than the steel substrate.
Claim 10
Dependent Claim
16 words
Method according to claim 8 in which the metallic powder contains zinc or a zinc alloy.
Claim 11
Dependent Claim
16 words
Method according to claim 8 in which the metallic powder contains magnesium or a magnesium alloy.
Claim 12
Dependent Claim
20 words
Method according to claim 7 in which the anticorrosive compound contains a heavy metal salt of an organic nitro compound.
Claim 13
Dependent Claim
23 words
Method according to claim 11 in which the organic nitro compound is a nitrated aromatic carboxylic acid having 7 to 14 carbon atoms.
Claim 14
Dependent Claim
13 words
Method according to claim 1 in which the primer contains a flake-shaped filler.
Claim 15
Dependent Claim
82 words
In a method of protecting a surface submerged in water against corrosion in the vicinity of the surface of the water, wherein the surface is cleaned and then coated with a corrosion-resistant coating material containing a synthetic resin, the step of covering the surface after cleaning with a primer which comprises impinging against said clean surface carrier particles coated with a primer composition compatible with the said corrosion-resistant coating in an amount whereby the clean surface becomes coated with said primer composition.
Claim 16
Dependent Claim
82 words
In a method of protecting a surface submerged in water against corrosion in the vicinity of the surface of the water, wherein the surface is cleaned and then coated with a corrosion-resistant coating material containing a synthetic resin, the step of covering the surface after cleaning with a primer which comprises impinging against said clean surface carrier particles coated with a primer composition compatible with the said corrosion-resistant coating in an amount whereby the clean surface becomes coated with said primer composition.
Claim 17
Independent Claim
70 words
The method of increasing the time permitted between cleaning and coating of a surface submerged in water with a corrosion-resistant coating composition containing a synthetic resin which comprises covering the surface between cleaning and said coating step with a primer composition by impinging carrier particles coated with a primer composition which is compatible with said coating composition against the said surface until the surface is covered with the priming composition.
Claim 18
Independent Claim
70 words
The method of increasing the time permitted between cleaning and coating of a surface submerged in water with a corrosion-resistant coating composition containing a synthetic resin which comprises covering the surface between cleaning and said coating step with a primer composition by impinging carrier particles coated with a primer composition which is compatible with said coating composition against the said surface until the surface is covered with the priming composition.
References Cited (Backward Citations)
GB986064A
Cited
GB1177554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |