Patent US4547532A successfully refreshed from Google Patents.
US4547532A
Expired / Lapsed
US
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Antifouling paint
Assignee: M&T Chemicals Inc
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Filing: 1983-04-01
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Granted: 1985-10-15
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Expires: 2003-04-01
Abstract
Abstract The undesirable premature viscosity increase in polymer-based antifouling paints is retarded by incorporating into the formulation at least one hydroxylamine or alkanolamine in combination with a triorganotin compound. Alternatively, the reaction product of any of these materials may be utilized either singly or in combination with these components.
Inventors
- 👤 John R. Bednarski
- 👤 Melvin H. Gitlitz
- 👤 David A. Russo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:46
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1656; C09D5/1662; C09D5/1668; C09D5/1687
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
In an antifouling paint composition comprising (1) a solubilized polymer derived at least in part from at least one triorganotin derivative of an ethylenically unsaturated acid and a pigment comprising cuprous oxide, zinc oxide or a mixture of cuprous and zinc oxides; the improvement comprising a viscosity stabilizer consisting of at least one of (a) a mixture of an organotin compound comprising a bis(tri-lower alkyltin)oxide and a nitrogen compound of the general, formula ##STR5## where R 1 and R 2 are lower alkyl and n is 0 or an integer from 1-4 or (b) the reaction product of said organotin compound and said nitrogen compound; wherein the weight ratio of organotin compound to nitrogen compound is from 1:1 to 10:1.
Claim 2
Dependent Claim
120 words
In an antifouling paint composition comprising (1) a solubilized polymer derived at least in part from at least one triorganotin derivative of an ethylenically unsaturated acid and a pigment comprising cuprous oxide, zinc oxide or a mixture of cuprous and zinc oxides; the improvement comprising a viscosity stabilizer consisting of at least one of (a) a mixture of an organotin compound comprising a bis(tri-lower alkyltin)oxide and a nitrogen compound of the general, formula ##STR5## where R 1 and R 2 are lower alkyl and n is 0 or an integer from 1-4 or (b) the reaction product of said organotin compound and said nitrogen compound; wherein the weight ratio of organotin compound to nitrogen compound is from 1:1 to 10:1.
Claim 3
Dependent Claim
28 words
An antifouling paint composition according to claim 1 where the concentration of the viscosity stabilizer is from 0.1 to 10, based on the weight of the polymer solids.
Claim 4
Dependent Claim
30 words
An antifouling paint composition according to claim 2 where the concentration of the viscosity stabilizer is from about 0.5 to about 6%, based on the weight of the polymer solids.
Claim 5
Dependent Claim
15 words
An antifouling paint composition according to claim 1 where the composition includes an non-reactive solvent.
References Cited (Backward Citations)
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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) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |