Patent US2946324A successfully refreshed from Google Patents.
Patent US4532269A successfully refreshed from Google Patents.
US4532269A
Expired / Lapsed
US
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Erodible terpolymer from tributyl tin acrylate or methacrylate and paints for fouling control
Assignee: M&T Chemicals Inc
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Filing: 1984-03-23
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Granted: 1985-07-30
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Expires: 2004-03-23
Abstract
Abstract A novel polymeric binder for an antifouling paint includes greater than 2.5 to less than 25 mole percent of a unit from a tributyltin acrylate or methacrylate monomer group, an acrylic or methacrylic ester monomer unit having selected substituent groups in the ester moiety so that the ester is hydrolyzable at a suitable rate in seawater, and a copolymerizable ethylenically unsaturated monomer unit. The presence of the hydrolyzable ester group in the polymer binder of the present invention enables the paint to erode at a desired rate in seawater even with the low tin content in the polymer, thereby providing a desired low level of tin in solution and exposing a fresh paint surface periodically.
Inventors
- 👤 Melvin H. Gitlitz
- 👤 David B. Russell
- 👤 Howard H. Leiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:22
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/14; C09D5/16; C09D5/1606; C09D5/1637; C09D5/1643; C08; C08K; C08K5/00; C08K5/0008; C08K5/0058
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
184 words
An antifouling paint for protecting marine surfaces, comprising in combination: (a) toxicant and (b) a film-forming, water insoluble, seawater erodible polymeric binder having recurring groups represented by the formula ##STR12## wherein M is from greater than 2.5 to less than 25 mole percent of the unit from a tributyltin methacrylate or acrylate; B is the unit from an ethylenically unsaturated monomer, X is H or CH 3 ; R is selected from the group consisting of: ##STR13## wherein Z is NO 2 , halogen or CN; V is H, NO 2 , halogen, CN or alkoxy; (b) --(CH 2 ) n Y wherein n is an integer from 1 to 4; and Y is selected from the group consisting of ##STR14## and wherein R' is C 1 to C 4 primary, secondary or tertiary alkyl, R" is H or R'; R"' is alkyl or an aryl; (c) haloalkyl having at least one trihalomethyl group, where the halogen is Br, F or Cl and the alkyl has at least two carbons; (d) --Si(R"') 3 or --Si(OR"') 3 , and R"' is alkyl or an aryl.
Claim 2
Dependent Claim
184 words
An antifouling paint for protecting marine surfaces, comprising in combination: (a) toxicant and (b) a film-forming, water insoluble, seawater erodible polymeric binder having recurring groups represented by the formula ##STR12## wherein M is from greater than 2.5 to less than 25 mole percent of the unit from a tributyltin methacrylate or acrylate; B is the unit from an ethylenically unsaturated monomer, X is H or CH 3 ; R is selected from the group consisting of: ##STR13## wherein Z is NO 2 , halogen or CN; V is H, NO 2 , halogen, CN or alkoxy; (b) --(CH 2 ) n Y wherein n is an integer from 1 to 4; and Y is selected from the group consisting of ##STR14## and wherein R' is C 1 to C 4 primary, secondary or tertiary alkyl, R" is H or R'; R"' is alkyl or an aryl; (c) haloalkyl having at least one trihalomethyl group, where the halogen is Br, F or Cl and the alkyl has at least two carbons; (d) --Si(R"') 3 or --Si(OR"') 3 , and R"' is alkyl or an aryl.
Claim 3
Dependent Claim
29 words
The paint of claim 1 wherein R is --SiR 3 "' or Si(OR"') 3 , and R"' is a C 1 to C 6 primary, secondary or tertiary alkyl.
Claim 4
Dependent Claim
17 words
The paint of claim 2 wherein R is --SiR"' 3 or --Si(OR"') 3 and R"' is phenyl.
Claim 5
Dependent Claim
168 words
A water insoluble, seawater erodible film-forming polymer, said polymer having recurring groups represented by the formula ##STR15## wherein M is from greater than 2.5 to less than 25 mole percent of the unit from a tributyltin methacrylate or acrylate; B is the unit from an ethylenically unsaturated monomer; X is H or CH 3 ; R is selected from the group consisting of: ##STR16## wherein Z is NO 2 , halogen or CN; V is H, NO 2 , halogen, CN or alkoxy; (b) --(CH 2 ) n Y wherein n is an integer from 1 to 4; and Y is selected from the group consisting of ##STR17## and wherein R' is C to C primary, secondary or tertiary alkyl, R" is H or R'; R"' is alkyl or an aryl; (c) haloalkyl having at least one trihalomethyl group, where the halogen is Br, F or Cl and the alkyl has at least two carbons; (e) --SiR"' 3 or --Si(OR"') 3 and R"' is alkyl or an aryl.
Claim 6
Dependent Claim
168 words
A water insoluble, seawater erodible film-forming polymer, said polymer having recurring groups represented by the formula ##STR15## wherein M is from greater than 2.5 to less than 25 mole percent of the unit from a tributyltin methacrylate or acrylate; B is the unit from an ethylenically unsaturated monomer; X is H or CH 3 ; R is selected from the group consisting of: ##STR16## wherein Z is NO 2 , halogen or CN; V is H, NO 2 , halogen, CN or alkoxy; (b) --(CH 2 ) n Y wherein n is an integer from 1 to 4; and Y is selected from the group consisting of ##STR17## and wherein R' is C to C primary, secondary or tertiary alkyl, R" is H or R'; R"' is alkyl or an aryl; (c) haloalkyl having at least one trihalomethyl group, where the halogen is Br, F or Cl and the alkyl has at least two carbons; (e) --SiR"' 3 or --Si(OR"') 3 and R"' is alkyl or an aryl.
Claim 7
Dependent Claim
29 words
The polymer of claim 4 wherein R is --SiR 3 "' or Si(OR"') 3 , and R"' is a C 1 to C 6 primary, secondary or tertiary alkyl.
Claim 8
Dependent Claim
17 words
The polymer of claim 4 wherein R is --SiR"' 3 or --Si(OR"') 3 and R"' is phenyl.
Claim 9
Dependent Claim
19 words
The polymer of claim 4 wherein the polymer has an hydrolysis of at least 5×10 -4 milliequivalents per hour.
Claim 10
Dependent Claim
28 words
The polymer of claim 4, wherein the unit from a tributyltin methacrylate or acrylate is present in an amount from greater than 2.5 to about 20 mole percent.
References Cited (Backward Citations)
US4064338A
Cited
US4157999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |