Patent US4075319A successfully refreshed from Google Patents.
US4075319A
Expired / Lapsed
US
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Low leaching antifouling organometallic polyvinyls
Assignee: United States Department of the Navy
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Filing: 1976-06-24
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Granted: 1978-02-21
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Expires: 1996-06-24
Abstract
Abstract Marine structures which are designed to be submerged in an aqueous environment containing fouling organism are protected from fouling by the use of an organotin containing polymer wherein the tin is chemically bonded to the polymer. The polymer inhibits fouling of the exposed surface of the structure while minimizing the adverse effects on the surrounding environment due to reduced leaching of the organotin compound from the polymer.
Inventors
- 👤 Edward J. Dyckman
- 👤 Deborah M. Andersen
- 👤 Eugene C. Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:30
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1637; C09D5/1643
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
88 words
A composition of matter for preventing the growth of fouling organisms on marine structures said composition being characterized by a low leaching rate of the antifouling agent from the composition and comprising an organotin containing polymer, said polymer being the reaction product of a copolymer of methyl vinyl ether and maleic acid and an organotin oxide of the formula: ##STR2## wherein R 1 , R 2 and R 3 may be the same or different and are selected from the group consisting of propyl, butyl, phenyl and benzyl.
Claim 2
Dependent Claim
88 words
A composition of matter for preventing the growth of fouling organisms on marine structures said composition being characterized by a low leaching rate of the antifouling agent from the composition and comprising an organotin containing polymer, said polymer being the reaction product of a copolymer of methyl vinyl ether and maleic acid and an organotin oxide of the formula: ##STR2## wherein R 1 , R 2 and R 3 may be the same or different and are selected from the group consisting of propyl, butyl, phenyl and benzyl.
Claim 3
Dependent Claim
19 words
The composition of claim 1 which additionally contains an organic solvent in which said organotin containing polymer is soluble.
Claim 4
Dependent Claim
20 words
The composition of claim 2 wherein said organic solvent is selected from the group consisting of benzene, toluene and dichloromethane.
Claim 5
Dependent Claim
18 words
The composition of claim 2 wherein the organotin compound is bis(tri-n-butyl) tin oxide and the solvent is benzene.
Claim 6
Dependent Claim
18 words
The composition of claim 2 wherein the organotin compound is bis(tri-n-propyl) tin oxide and the solvent is benzene.
Claim 7
Independent Claim
81 words
A method for preventing the growth of fouling organisms on a marine structure which comprises applying to the surface of said structure a coating of an organotin containing polymer said polymer being the reaction product of a copolymer of methyl vinyl ether and maleic acid and an organotin oxide of the formula: ##STR3## wherein R 1 , R 2 and R 3 may be the same or different and are selected from the group consisting of propyl, butyl, phenyl and benzyl.
Claim 8
Independent Claim
81 words
A method for preventing the growth of fouling organisms on a marine structure which comprises applying to the surface of said structure a coating of an organotin containing polymer said polymer being the reaction product of a copolymer of methyl vinyl ether and maleic acid and an organotin oxide of the formula: ##STR3## wherein R 1 , R 2 and R 3 may be the same or different and are selected from the group consisting of propyl, butyl, phenyl and benzyl.
Claim 9
Dependent Claim
13 words
The method of claim 6 wherein the organotin compound is bis(tri-n-butyl) tin oxide.
Claim 10
Dependent Claim
14 words
The method of claim 6 wherein the organotin compound is bis (tri-n-propyl) tin oxide.
Claim 11
Dependent Claim
88 words
A composition of matter for preventing the growth of fouling organisms on marine structures said composition being characterized by a low leaching rate of the antifouling agent from the composition and comprising an organotin containing polymer, said polymer being the reaction product of a copolymer of methyl vinyl ether and maleic acid and an organotin hydroxide of the formula: ##STR4## wherein R 1 , R 2 and R 3 may be the same or different and are selected from the group consisting of propyl, butyl, phenyl and benzyl.
Claim 12
Dependent Claim
88 words
A composition of matter for preventing the growth of fouling organisms on marine structures said composition being characterized by a low leaching rate of the antifouling agent from the composition and comprising an organotin containing polymer, said polymer being the reaction product of a copolymer of methyl vinyl ether and maleic acid and an organotin hydroxide of the formula: ##STR4## wherein R 1 , R 2 and R 3 may be the same or different and are selected from the group consisting of propyl, butyl, phenyl and benzyl.
Claim 13
Dependent Claim
19 words
The composition of claim 9 which additionally contains an organic solvent in which said organotin containing polymer is soluble.
Claim 14
Dependent Claim
20 words
The composition of claim 10 wherein said organic solvent is selected from the group consisting of benzene, toluene and dichloromethane.
Claim 15
Independent Claim
81 words
A method for preventing the growth of fouling organisms on a marine structure which comprises applying to the surface of said structure a coating of an organotin containing polymer said polymer being the reaction product of a copolymer of methyl vinyl ether and maleic acid and an organotin hydroxide of the formula: ##STR5## wherein R 1 , R 2 and R 3 may be the same or different and are selected from the group consisting or propyl, butyl, phenyl and benzyl.
Claim 16
Independent Claim
81 words
A method for preventing the growth of fouling organisms on a marine structure which comprises applying to the surface of said structure a coating of an organotin containing polymer said polymer being the reaction product of a copolymer of methyl vinyl ether and maleic acid and an organotin hydroxide of the formula: ##STR5## wherein R 1 , R 2 and R 3 may be the same or different and are selected from the group consisting or propyl, butyl, phenyl and benzyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |