US4687792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erodible ship-bottom paints for control of marine fouling
Assignee: Arkema Inc
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Filing: 1985-01-29
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Granted: 1987-08-18
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Expires: 2005-01-29
Abstract
Abstract A novel polymeric binder for use in an antifouling paint includes an acrylic or methacrylic ester monomer having selected substituted aryl or arylalkyl 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.
Inventors
- 👤 David B. Russell
- 👤 Melvin H. Gitlitz
- 👤 Howard H. Leiner
- 👤 Mo A. Khuddus
- 👤 Abe Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:16
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D157/00; C09D5/00; C09D5/16; C09D5/1656; C09D5/1662; C09D5/1668
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
98 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 ##STR14## wherein X is H or CH 3 ; R is represented by the formula ##STR15## wherein Z is NO 2 , halogen or CN, and where B is the residue of an ethylenically unsaturated monomer, and wherein said polymer has an hydrolysis rate of at least 5×10 -4 milliequivalents per hour whereby the paint has an erosion rate of at least 2 microns per month in seawater.
Claim 2
Dependent Claim
98 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 ##STR14## wherein X is H or CH 3 ; R is represented by the formula ##STR15## wherein Z is NO 2 , halogen or CN, and where B is the residue of an ethylenically unsaturated monomer, and wherein said polymer has an hydrolysis rate of at least 5×10 -4 milliequivalents per hour whereby the paint has an erosion rate of at least 2 microns per month in seawater.
Claim 3
Dependent Claim
12 words
An antifouling paint according to claim 1 in which R is ##STR16##
Claim 4
Dependent Claim
12 words
An antifouling paint according to claim 1 in which R is ##STR17##
Claim 5
Dependent Claim
14 words
An antifouling paint according to claim 1 in which Z is NO 2 .
Claim 6
Dependent Claim
12 words
An antifouling paint according to claim 1 in which Z is halogen.
Claim 7
Dependent Claim
12 words
An antifouling paint according to claim 1 in which Z is CN.
Claim 8
Dependent Claim
19 words
A method of protecting a marine surface comprising coating said marine surface with the antifouling paint of claim 1.
Claim 9
Dependent Claim
53 words
A water insoluble, seawater erodible film forming polymer, said polymeric having recurring groups represented by the formula ##STR18## wherein B is the residue of an ethylenically unsaturated monomer, X is H or CH 3 , R is selected from the group consisting of: ##STR19## wherein Z is NO 2 , halogen or CN.
Claim 10
Dependent Claim
53 words
A water insoluble, seawater erodible film forming polymer, said polymeric having recurring groups represented by the formula ##STR18## wherein B is the residue of an ethylenically unsaturated monomer, X is H or CH 3 , R is selected from the group consisting of: ##STR19## wherein Z is NO 2 , halogen or CN.
Claim 11
Dependent Claim
19 words
The polymer of claim 8 wherein the polymer has an hydrolysis of at least 5×10 -4 milliequivalents per hour.
Claim 12
Dependent Claim
11 words
A polymer according to claim 37 in which R is ##STR20##
Claim 13
Dependent Claim
11 words
A polymer according to claim 8 in which R is ##STR21##
Claim 14
Dependent Claim
13 words
An polymer according to claim 8 in which Z is NO 2 .
Claim 15
Dependent Claim
11 words
An polymer according to claim 8 in which Z is halogen.
Claim 16
Dependent Claim
11 words
An polymer according to claim 8 in which Z is CN.
References Cited (Backward Citations)
US4052354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |