US4752629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binder for anti-fouling paints
Assignee: International Paint Ltd
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Filing: 1986-05-02
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Granted: 1988-06-21
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Expires: 2006-05-02
Abstract
Abstract An anti-fouling marine paint comprises a pigment, a marine biocide which may or may not be identical to the pigment and a film-forming binder which is a hydrolysable polymer which contains units of the formula: <IMAGE> and can be obtained by polymerisation of an alpha-aryl alkyl ester having the formula: <IMAGE> where R is an alpha, beta-unsaturated organic group, each Ar independently is an aryl group and R' is a hydrogen atom or an alkyl or aryl group.
Inventors
- 👤 Kevin Proudlock
- 👤 Simon P. J. Dennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:48
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1656; C09D5/1662; C09D5/1668
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
65 words
A self-polishing anti-fouling marine paint comprising a pigment, a biocide for marine organisms which is different from the pigment, and a film-forming polymeric binder which is hydrolysable in seawater and contains units corresponding to an ester of an olefinically unsaturated acid having the formula: ##STR8## where each Ar independently is an aryl group and R' is a hydrogen atom, an alkyl group or aryl group.
Claim 2
Dependent Claim
65 words
A self-polishing anti-fouling marine paint comprising a pigment, a biocide for marine organisms which is different from the pigment, and a film-forming polymeric binder which is hydrolysable in seawater and contains units corresponding to an ester of an olefinically unsaturated acid having the formula: ##STR8## where each Ar independently is an aryl group and R' is a hydrogen atom, an alkyl group or aryl group.
Claim 3
Dependent Claim
18 words
An anti-fouling marine paint according to claim 1, wherein R' and each Ar are all independently aryl groups.
Claim 4
Dependent Claim
19 words
An anti-fouling marine paint according to claim 2, wherein said polymer contains units corresponding to triphenylmethyl acrylate or methacrylate.
Claim 5
Dependent Claim
27 words
An anti-fouling marine paint according to claim 1, wherein at least one of the groups Ar is a phenyl group substituted by one or two electron-releasing groups.
Claim 6
Dependent Claim
19 words
An anti-fouling marine paint according to claim 4, wherein said polymer contains units corresponding to diphenyl(p-methoxyphenyl)methyl acrylate or methacrylate.
Claim 7
Dependent Claim
18 words
An anti-fouling marine paint according to claim 1, said polymer contains 25-40 percent of units of said formula.
Claim 8
Dependent Claim
28 words
An anti-fouling marine paint according to claim 1, wherein said polymer also contains units of an alkyl acrylate having at least two carbon atoms in the alkyl group.
Claim 9
Dependent Claim
18 words
A paint according to claim 1, wherein said pigment comprises cuprous oxide, cuprous thiocyanate or zinc ethylene bis(dithiocarbamate).
Claim 10
Dependent Claim
85 words
An anti-fouling marine paint comprising a pigment which is a sparingly soluble copper or zinc compound having a solubility in sea water of from 0.5 to 10 parts per million by weight and acts as a biocide for marine organisms and a film-forming binder which is a hydrolysable polymer containing units corresponding to an ester of an olefinically unsaturated acid and having the formula ##STR9## where each Ar independently is an aryl group and R' is a hydrogen atom, an alkyl group or aryl group.
Claim 11
Dependent Claim
85 words
An anti-fouling marine paint comprising a pigment which is a sparingly soluble copper or zinc compound having a solubility in sea water of from 0.5 to 10 parts per million by weight and acts as a biocide for marine organisms and a film-forming binder which is a hydrolysable polymer containing units corresponding to an ester of an olefinically unsaturated acid and having the formula ##STR9## where each Ar independently is an aryl group and R' is a hydrogen atom, an alkyl group or aryl group.
Claim 12
Dependent Claim
18 words
A paint according to claim 9 wherein said pigment comprises cuprous oxide, cuprous thiocyanate or zinc ethylene bis(dithiocarbamate).
Claim 13
Dependent Claim
18 words
An anti-fouling marine paint according to claim 9, wherein R' and each Ar are all independently aryl groups.
Claim 14
Dependent Claim
19 words
An anti-fouling marine paint according to claim 11, wherein said polymer contains units corresponding to triphenylmethyl acrylate or methacrylate.
Claim 15
Dependent Claim
27 words
An anti-fouling marine paint according to claim 9, wherein at least one of the groups Ar is a phenyl group substituted by one or two electron-releasing groups.
Claim 16
Dependent Claim
18 words
An anti-fouling marine paint according to claim 13 wherein polymer contains units corresponding to diphenyl(p-methoxyphenyl)methyl acrylate or methacrylate.
Claim 17
Dependent Claim
19 words
An anti-fouling marine paint according to claim 9, wherein said polymer contains 25-40 percent of units of said formula.
Claim 18
Dependent Claim
28 words
An anti-fouling marine paint according to claim 9 wherein said polymer also contains units of an alkyl acrylate having at least two carbon atoms in the alkyl group.
Claim 19
Dependent Claim
18 words
The anti-fouling marine paint according to claim 9 wherein the pigment volume concentration is from about 35-50 percent.
Claim 20
Dependent Claim
18 words
The anti-fouling marine paint according to claim 1 wherein the pigment volume concentration is from about 30-50 percent.
Claim 21
Dependent Claim
14 words
The anti-fouling marine paint according to claim 1 wherein the pigment comprises zinc oxide.
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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) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |