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US4197233A Expired / Lapsed US ⏱️ 0.0 years remaining

Anti-fouling and anti-sliming coating material

Assignee: Standard Oil Co
•
Filing: 1978-03-15
•
Granted: 1980-04-08
•
Expires: 1998-03-15
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Abstract

Abstract A polymeric composition containing copper flake in sufficient quantities to render the entire thickness of the polymeric composition electrically conductive. The copper flake is treated to remove oxides and reacted with conventional epoxy resins modified with an epoxidized polyol (polyglycol). The formulation not only exhibits outstanding anti-fouling properties but also exhibits anti-sliming properties. The composition is useful as a gel coat and when utilized on ships, boats, and other water craft, a vessel results which requires no additional anti-fouling or anti-sliming treatment for several years. The composition can also be used to great advantage as a liner for pipes and conduits used to transport salt or fresh water where fouling of the pipes is a problem. In one embodiment of the invention, a composition is disclosed which will cure under water. This particular formulation can be used to great advantage in patching holes in copper clad hulls and the like while the vessel is in water.

Inventors

  • 👤 David W. Marshall

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 05:48
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1656; C09D5/1662; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08K; C08K3/00; C08K3/02; C08K3/08; C08L; C08L63/00; C09D163/00; C09D5/1606; C09D5/1612; C09D5/1618

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 65 words
A coating material which exhibits anti-fouling and anti-sliming properties comprising a cured resin formed from an epoxy resin coreacted with an epoxidized polyol and a curing agent, said cured resin containing copper flake, said copper flake being treated to remove impurities and oxides and being present in sufficient quantities so that the copper flake comprises 50% or more of the weight of the gel coat.
Claim 2
Dependent Claim 65 words
A coating material which exhibits anti-fouling and anti-sliming properties comprising a cured resin formed from an epoxy resin coreacted with an epoxidized polyol and a curing agent, said cured resin containing copper flake, said copper flake being treated to remove impurities and oxides and being present in sufficient quantities so that the copper flake comprises 50% or more of the weight of the gel coat.
Claim 3
Dependent Claim 27 words
The coating material as set forth in claim 1 wherein the cured resin is formed from an uncured epoxy resin having a viscosity less than 12,000 cps.
Claim 4
Dependent Claim 29 words
The coating material as set forth in claim 1 wherein the epoxidized polyol is present in sufficient quantities to comprise 5-30% of the total weight of the coating material.
Claim 5
Dependent Claim 23 words
The coating material as set forth in claim 1 wherein the epoxidized polyol has an epoxy equivalent weight within the range of 100-500.
Claim 6
Dependent Claim 20 words
The coating material as set forth in claim 1 wherein said epoxy resin is a bisphenol A type epoxy resin.
Claim 7
Dependent Claim 24 words
The coating material as set forth in claim 1 wherein the particle size of said copper flake is between the range of 100-325 mesh.
Claim 8
Dependent Claim 19 words
The coating material as set forth in claim 1 wherein said epoxidized polyol is a polypropylene glycol glycidyl ether.
Claim 9
Dependent Claim 22 words
The coating material as set forth in claim 1 wherein said cured resin is formed with a curing agent which cures underwater.
Claim 10
Dependent Claim 26 words
The coating material as set forth in claim 1 wherein the epoxidized polyol which is coreacted with said epoxy resin has the following generalized formula: ##STR3##

References Cited (Backward Citations)

US3219505A Cited
US3299169A Cited
US3993707A Cited
US3983075A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-04-08 1983-10-08 1984-04-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-04-08 1987-10-08 1988-04-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-04-08 1991-10-08 1992-04-08 $7700.00 Window Closed / Lapsed

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