US4273833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-fouling overcoating composition and use thereof
Assignee: United States Trading International Inc
•
Filing: 1978-03-30
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Granted: 1981-06-16
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Expires: 1998-03-30
Abstract
Abstract An anti-fouling overcoating composition for watercraft or stationary underwater structures precoated with hard-surface leaching-type anti-fouling paint consists essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic copolymer, a polyalkylenepolyamine or a hydrophilic polyalkylenepolyamine derivative and an effective amount of an ultraviolet-absorbing agent.
Inventors
- 👤 Charles F. De Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:00
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1693; B; B63; B63B; B63B59/00; B63B59/04; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/064; C09D5/1656; C09D5/1662; C09D5/1668; C08; C08L; C08L79/00; C08L79/02; C08L79/04; C08L79/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31721; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928; Y10T428/31935; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
93 words
A method of reducing the fouling tendency of watercraft and stationary underwater structures consisting of applying below the water line of the watercraft or underwater structure a hard-surface leaching-type anti-fouling paint, drying the anti-fouling paint, overcoating the dried paint with an outer coating composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, a higher polyalkylenepolyamine or a hydrophilic higher polyalkylenepolyamine derivative and an effective amount of an ultraviolet-absorbing agent, and drying the outer coating composition over the paint.
Claim 2
Independent Claim
93 words
A method of reducing the fouling tendency of watercraft and stationary underwater structures consisting of applying below the water line of the watercraft or underwater structure a hard-surface leaching-type anti-fouling paint, drying the anti-fouling paint, overcoating the dried paint with an outer coating composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, a higher polyalkylenepolyamine or a hydrophilic higher polyalkylenepolyamine derivative and an effective amount of an ultraviolet-absorbing agent, and drying the outer coating composition over the paint.
Claim 3
Dependent Claim
22 words
The method of claim 1, wherein the watercraft or underwater structure is pre-wetted with water prior to application of the anti-fouling composition.
Claim 4
Dependent Claim
28 words
The method of claim 1, wherein the effective amount of the ultraviolet-absorbing agent is from about 0.5% to about 5% by weight of the aqueous solution or dispersion.
Claim 5
Dependent Claim
18 words
The method of claim 1, wherein the ultraviolet-absorbing agent absorbs from about 2700 A to about 3300 A.
Claim 6
Dependent Claim
34 words
The method of claim 1, wherein the carboxylated hydrophilic acrylic copolymer and the higher polyalkylenepolyamine or hydrophilic higher polyalkylenepolyamine derivative constitute from about 5% to about 50% by weight of the solution or dispersion.
Claim 7
Dependent Claim
24 words
The method of claim 1, wherein the cross-linking agent constituted from about 0.1% to about 2.5% by weight of the aqueous solution or dispersion.
Claim 8
Dependent Claim
29 words
The method of claim 1, wherein the ratio of higher polyalkylenepolyamine or hydrophilic higher polyalkylenepolyamine derivative to the carboxylated hydrophilic acrylic polymer is from about 10:1 to about 0.5:1.
Claim 9
Dependent Claim
12 words
The method of claim 1, wherein the ultraviolet-absorbing agent is 2-ethoxyethyl p-methoxycinnamate.
Claim 10
Dependent Claim
19 words
The method of claim 1, wherein the aqueous solution or dispersion contains up to 35% of an organic solvent.
Claim 11
Dependent Claim
88 words
A marine structure protected against fouling by marine organisms consisting of a watercraft or a stationary marine structure coated below the waterline with a hard-surface leaching-type anti-fouling paint and overcoated with an anti-fouling composition consisting essentially of an aqueous solution or dispersion of an carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, a higher polyalkylenepolyamine or a hydrophilic higher polyalkylenepolyamine derivative and an amount of from about 0.5% to about 5% by weight of said aqueous solution or dispersion of an ultraviolet-absorbing agent.
Claim 12
Dependent Claim
88 words
A marine structure protected against fouling by marine organisms consisting of a watercraft or a stationary marine structure coated below the waterline with a hard-surface leaching-type anti-fouling paint and overcoated with an anti-fouling composition consisting essentially of an aqueous solution or dispersion of an carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, a higher polyalkylenepolyamine or a hydrophilic higher polyalkylenepolyamine derivative and an amount of from about 0.5% to about 5% by weight of said aqueous solution or dispersion of an ultraviolet-absorbing agent.
Claim 13
Dependent Claim
18 words
The structure of claim 10, wherein the ultraviolet-absorbing agent absorbs from about 2700 A to about 3300 A.
Claim 14
Dependent Claim
34 words
The structure of claim 10, wherein the carboxylated hydrophilic acrylic polymer and the higher polyalkylenepolyamine or hydrophilic higher polyalkylenepolyamine derivative constitute from about 5% to about 50% by weight of the solution or dispersion.
Claim 15
Dependent Claim
24 words
The structure of claim 10, wherein the cross-linking agent constitutes from about 0.1% to about 2.5% by weight of the aqueous solution or dispersion.
Claim 16
Dependent Claim
29 words
The structure of claim 10, wherein the ratio of higher polyalkylenepolyamine or hydrophilic higher polyalkylenepolyamine derivative to the carboxylated hydrophilic acrylic copolymer is from about 10:1 to about 0.5:1.
Claim 17
Dependent Claim
11 words
The structure of claim 10, wherein the ultraviolet-absorbing agent is 2-ethoxyethyl-p-methoxycinnamate.
Claim 18
Independent Claim
84 words
A method of reducing the fouling tendency of watercraft and stationary underwater structures consisting of applying below the waterline of the watercraft or underwater structure a hard-surface leaching-type anti-fouling paint, drying the anti-fouling paint, overcoating the dried paint with an outer coating composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, polyethylenimine and an effective amount of an ultraviolet-absorbing agent, and drying the outer coating composition over the paint.
Claim 19
Independent Claim
84 words
A method of reducing the fouling tendency of watercraft and stationary underwater structures consisting of applying below the waterline of the watercraft or underwater structure a hard-surface leaching-type anti-fouling paint, drying the anti-fouling paint, overcoating the dried paint with an outer coating composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, polyethylenimine and an effective amount of an ultraviolet-absorbing agent, and drying the outer coating composition over the paint.
Claim 20
Independent Claim
86 words
A method of reducing the fouling tendency of watercraft and stationary underwater structures consisting of applying below the waterline of the watercraft or underwater structure a hard-surface leaching-type anti-fouling paint, drying the anti-fouling paint, overcoating the dried paint with an outer coating composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, an ethoxylated polyethylenimine and an effective amount of an ultraviolet-absorbing agent, and drying the outer coating composition over the paint.
Claim 21
Independent Claim
86 words
A method of reducing the fouling tendency of watercraft and stationary underwater structures consisting of applying below the waterline of the watercraft or underwater structure a hard-surface leaching-type anti-fouling paint, drying the anti-fouling paint, overcoating the dried paint with an outer coating composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, an ethoxylated polyethylenimine and an effective amount of an ultraviolet-absorbing agent, and drying the outer coating composition over the paint.
Claim 22
Dependent Claim
82 words
A marine structure protected against fouling by marine organisms consisting of a watercraft or a stationary marine structure coated below the waterline with a hard-surface leaching-type anti-fouling paint and overcoated with an anti-fouling composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, an ethoxylated polyethylenimine and an amount of from about 0.5% to about 5% by weight of said aqueous solution or dispersion of an ultraviolet-absorbing agent.
Claim 23
Dependent Claim
82 words
A marine structure protected against fouling by marine organisms consisting of a watercraft or a stationary marine structure coated below the waterline with a hard-surface leaching-type anti-fouling paint and overcoated with an anti-fouling composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, an ethoxylated polyethylenimine and an amount of from about 0.5% to about 5% by weight of said aqueous solution or dispersion of an ultraviolet-absorbing agent.
Claim 24
Independent Claim
86 words
A method of reducing the fouling tendency of watercraft and stationary underwater structures consisting of applying below the waterline of the watercraft or underwater structure a hard-surface leaching-type anti-fouling paint, drying the anti-fouling paint, overcoating the dried paint with an outer coating composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, a urea-modified polyethylenimine and an effective amount of an ultraviolet-absorbing agent, and drying the outer coating composition over the paint.
Claim 25
Independent Claim
86 words
A method of reducing the fouling tendency of watercraft and stationary underwater structures consisting of applying below the waterline of the watercraft or underwater structure a hard-surface leaching-type anti-fouling paint, drying the anti-fouling paint, overcoating the dried paint with an outer coating composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, a urea-modified polyethylenimine and an effective amount of an ultraviolet-absorbing agent, and drying the outer coating composition over the paint.
Claim 26
Dependent Claim
82 words
A marine structure protected against fouling by marine organisms consisting of a watercraft or a stationary marine structure coated below the waterline with a hard-surface leaching-type anti-fouling paint and overcoated with an anti-fouling composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, a urea-modified polyethylenimine and an amount of from about 0.5% to about 5% by weight of said aqueous solution or dispersion of an ultraviolet-absorbing agent.
Claim 27
Dependent Claim
82 words
A marine structure protected against fouling by marine organisms consisting of a watercraft or a stationary marine structure coated below the waterline with a hard-surface leaching-type anti-fouling paint and overcoated with an anti-fouling composition consisting essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolymer, a cross-linking agent for the carboxylated hydrophilic acrylic copolymer, a urea-modified polyethylenimine and an amount of from about 0.5% to about 5% by weight of said aqueous solution or dispersion of an ultraviolet-absorbing agent.
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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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |