US4376181A
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Stabilized antifouling paint composition
Assignee: Tanabe Pharma Corp
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Filing: 1981-01-30
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Granted: 1983-03-08
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Expires: 2001-01-30
Abstract
Abstract PCT No. PCT/JP81/00021 Sec. 371 Date Sep. 15, 1981 Sec. 102(e) Date Sep. 15, 1981 PCT Filed Jan. 30, 1981 PCT Pub. No. WO81/02162 PCT Pub. Date Aug. 6, 1981.There is provided an antifouling paint composition stabilized against viscosity increase and gelation during storage, which comprises a triorganotin-containing polymer and cuprous oxide as combined active ingredients, a stabilizing amount of a hindered phenol, and a solvent therefor.
Inventors
- 👤 Koreyoshi Suenobu
- 👤 Yasuhiro Hidaka
- 👤 Tetsuji Ike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1606
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
34 words
An antifouling paint composition stabilized against viscosity increase and gelation during storage which comprises triorganotin-containing polymer and cuprous oxide as combined active ingredients, a stabilizing amount of a hindered phenol, and a solvent therefor.
Claim 2
Dependent Claim
34 words
An antifouling paint composition stabilized against viscosity increase and gelation during storage which comprises triorganotin-containing polymer and cuprous oxide as combined active ingredients, a stabilizing amount of a hindered phenol, and a solvent therefor.
Claim 3
Dependent Claim
18 words
The composition of claim 1, wherein said triorganotin-containing polymer is a copolymer of tributyltin methacrylate and methyl methacrylate.
Claim 4
Dependent Claim
21 words
The composition of claim 1, wherein said triorganotin-containing polymer is a copolymer of tributyltin methacrylate, methyl methacrylate and an alkyl acrylate.
Claim 5
Dependent Claim
12 words
The composition of claim 3, wherein said alkyl acrylate is butyl acrylate.
Claim 6
Dependent Claim
12 words
The composition of claim 3, wherein said alkyl acrylate is 2-ethylhexyl acrylate.
Claim 7
Dependent Claim
34 words
The composition of any one of claims 1, 2, 3, 4, or 5, wherein said hindered phenol is a member selected from the group consisting of 2,6-di-tert-butylphenol, 2,6-di-tert-butyl-alpha-dimethylamino-p-cresol, tert-butylhydroquinone, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,2'-methylenebis(4-methyl-6-tert-butylphenol) and 2,2'-methylenebis(4-ethyl-6-tert-butylphenol).
Claim 8
Dependent Claim
35 words
In an antifouling paint composition comprising triorganotin-containing polymer and cuprous oxide as combined active ingredients, the improvement comprising an amount of hindered phenol sufficient to stabilize said composition against viscosity increase and gelation during storage.
Claim 9
Dependent Claim
35 words
In an antifouling paint composition comprising triorganotin-containing polymer and cuprous oxide as combined active ingredients, the improvement comprising an amount of hindered phenol sufficient to stabilize said composition against viscosity increase and gelation during storage.
Claim 10
Dependent Claim
12 words
A composition according to claim 7 wherein the hindered phenol is 2,6-di-tert-butylphenol.
Claim 11
Dependent Claim
12 words
A composition according to claim 7 wherein the hindered phenol is 2,5-di-tert-butylhydroquinone.
Claim 12
Dependent Claim
12 words
A composition according to claim 7 wherein the hindered phenol is 2,2'-methylenebis(4-methyl-6-tert-butylphenol).
Claim 13
Dependent Claim
12 words
A composition according to claim 7 wherein the hindered phenol is 2,2'-methylenebis(4-ethyl-6-tert-butylphenol).
Claim 14
Independent Claim
51 words
A method of stabilizing an antifouling paint composition, comprising, as combined active ingredients: (a) triorganotin-containing polymer and (b) cuprous oxide, against viscosity increase and gelatin during storage, which comprises incorporating in the composision a stabilizing amount of a hindered phenol selected from the group consisting of 2,6-di-tert-butylphenol, 2,5-di-tert-butylhydroquinone, 2,2'-methylenebis(4-methyl-6-tert-butylphenol) and 2,2'-methylenebis(4-ethyl-6-tert-butylphenol).
Claim 15
Independent Claim
51 words
A method of stabilizing an antifouling paint composition, comprising, as combined active ingredients: (a) triorganotin-containing polymer and (b) cuprous oxide, against viscosity increase and gelatin during storage, which comprises incorporating in the composision a stabilizing amount of a hindered phenol selected from the group consisting of 2,6-di-tert-butylphenol, 2,5-di-tert-butylhydroquinone, 2,2'-methylenebis(4-methyl-6-tert-butylphenol) and 2,2'-methylenebis(4-ethyl-6-tert-butylphenol).
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) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |