US5397385A
Expired / Lapsed
US
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Anti-fouling coating composition containing capsaicin
Assignee: GEORGES PETER J
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Filing: 1994-03-28
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Granted: 1995-03-14
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Expires: 2014-03-28
Abstract
Abstract An anti-fouling coating utilizes capsaicin as an anti-fouling agent. In a preferred embodiment, finely divided capsaicin, an oleoresin capsaicin liquid solution, or crystalized capsaicin, is mixed with a suitable corrosion resistant epoxy resin which is then mixed with a hardening catalyst and applied to the surface to be treated. In some applications, finely divided inert particles may be added to impart additional desirable characteristic to the surface. The capsaicin constituent used in the coating preferably has a rating of from about 100,000 to about 1,500,000 Scoville Heat Units. The capsaicin may be mixed with a silicon dioxide and then solubilized into a free-flowing homogeneous liquid oleoresin composition by adding a solvent to increase solubility and facilitate mixing. The capsaicin may also be formed into crystals which are mixed with the coating material. The anti-fouling composition can be used in combination with conventional anti-fouling coatings and paints and binders and applied to wood, metal, and plastic surfaces. The anti-fouling composition may also be added to other materials in molding processes to form various articles of manufacture and molded products, such as boat hulls and water pipes, which resist fouling by organisms common in fresh water and sea water.
Inventors
- 👤 James L. Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:07
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1612; C09D5/1625; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
55 words
An anti-fouling liquid additive having capsaicin as an active ingredient to repel marine organisms comprising a mixture of; from about 20% to about 90% by weight capsaicin having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units, and from about 10% to about 80% by weight of a selected solvent.
Claim 2
Dependent Claim
55 words
An anti-fouling liquid additive having capsaicin as an active ingredient to repel marine organisms comprising a mixture of; from about 20% to about 90% by weight capsaicin having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units, and from about 10% to about 80% by weight of a selected solvent.
Claim 3
Dependent Claim
47 words
The anti-fouling liquid additive according to claim 1 wherein said mixture comprises; from about 10% to about 50% by weight of silicon dioxide, from about 20% to about 75% by weight of said capsaicin, and from about 15% to about 50% by weight of said selected solvent.
Claim 4
Dependent Claim
24 words
The anti-fouling liquid additive according to claim 1 wherein said solvent is selected from the group consisting of benzyl alcohol, methyl-ethyl-ketone, and isopropyl alcohol.
Claim 5
Dependent Claim
27 words
The anti-fouling liquid additive according to claim 1 wherein the pungency of said capsaicin is in the range of from about 100,000 to about 1,500,000 Scoville Units.
Claim 6
Dependent Claim
50 words
The anti-fouling liquid additive according to claim 1 wherein said capsaicin is derived from finely divided chile pepper plant tissue selected from the group consisting of Habenaro and Bahamian chile peppers having a pungency in the range of from about 100,000 to about 300,000 Scoville Units in a natural state.
Claim 7
Dependent Claim
52 words
The anti-fouling liquid additive according to claim 1 wherein said capsaicin is derived from oleoresin capsaicin extracted from chile pepper plant tissue selected from the group consisting of Habenaro and Bahamian chile peppers having a pungency in the range of from about 100,000 to about 300,000 Scoville Units in a natural state.
Claim 8
Dependent Claim
27 words
The anti-fouling liquid additive according to claim 1 wherein said capsaicin is derived from a synthetic capsainoid compound selected from the group consisting of capsaicin and dihydrocapsaicin.
Claim 9
Dependent Claim
103 words
An anti-fouling additive in particulate form having capsaicin as an active ingredient to repel marine organisms comprising a mixture of; from about 25% to about 50% by weight capsaicin having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units, from about 10% to about 50% by weight of a selected solvent, from about 10% to about 12.5% by weight of silicon dioxide, and from about 10% to about 12.5% by weight of sodium silicate, prepared by the process of mixing said recited ingredients to form a mixture, allowing said mixture to crystallize, and then pulverizing said crystallized mixture.
Claim 10
Dependent Claim
103 words
An anti-fouling additive in particulate form having capsaicin as an active ingredient to repel marine organisms comprising a mixture of; from about 25% to about 50% by weight capsaicin having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units, from about 10% to about 50% by weight of a selected solvent, from about 10% to about 12.5% by weight of silicon dioxide, and from about 10% to about 12.5% by weight of sodium silicate, prepared by the process of mixing said recited ingredients to form a mixture, allowing said mixture to crystallize, and then pulverizing said crystallized mixture.
Claim 11
Dependent Claim
61 words
An improved anti-fouling marine coating composition containing capsaicin as an active ingredient in a coating material, wherein the improvement comprises a mixture of; from about 25% to about 90% by weight of the coating material, and from about 10% to about 75% by weight of capsaicin having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units.
Claim 12
Dependent Claim
61 words
An improved anti-fouling marine coating composition containing capsaicin as an active ingredient in a coating material, wherein the improvement comprises a mixture of; from about 25% to about 90% by weight of the coating material, and from about 10% to about 75% by weight of capsaicin having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units.
Claim 13
Dependent Claim
53 words
The improved anti-fouling marine coating composition according to claim 9 wherein said capsaicin is derived from dried finely divided chile pepper plant tissue selected from the group consisting of Habenaro and Bahamian chile peppers having a pungency in the range of from about 100,000 to about 300,000 Scoville Units in a natural state.
Claim 14
Dependent Claim
54 words
The improved anti-fouling marine coating composition according to claim 9 wherein said capsaicin is derived from oleoresin capsaicin extracted from chile pepper plant tissue selected from the group consisting of Habenaro and Bahamian chile peppers having a pungency in the range of from about 100,000 to about 300,000 Scoville Units in a natural state.
Claim 15
Dependent Claim
29 words
The improved anti-fouling marine coating composition according to claim 9 wherein said capsaicin is derived from a synthetic capsainoid compound selected from the group consisting of capsaicin and dihydrocapsaicin.
Claim 16
Dependent Claim
51 words
The improved anti-fouling marine coating composition according to claim 9 wherein said capsaicin is a liquid solution comprising; from about 20% to about 75% by weight capsaicin, from about 10% to about 50% by weight of silicon dioxide, and from about 15% to about 50% by weight of a selected solvent.
Claim 17
Dependent Claim
66 words
The improved anti-fouling marine coating composition according to claim 9 wherein said capsaicin is in a crystal form with each crystal comprising; from about 25% to about 50% by weight capsaicin, from about 10% to about 50% by weight of a selected solvent, from about 10% to about 12.5% by weight of silicon dioxide, and from about 10% to about 12.5% by weight of sodium silicate.
Claim 18
Dependent Claim
64 words
The improved anti-fouling marine coating composition according to claim 9 wherein the coating material comprises from about 60% to about 80% resin selected from the group consisting of epoxy resins and polyglycol resins, and from about 4% to about 8% of a hardening catalyst, and said capaiscin is in a proportion of from about 20% to about 60% by weight of the coating material.
Claim 19
Dependent Claim
39 words
The improved anti-fouling marine coating composition according to claim 9 wherein said mixture includes a binding agent selected from the group consisting of polyvinyl chloride, chlorinated rubber, acrylic resins, vinyl chloride-vinyl acetate copolymers, butadiene-styrene-acrylonitrile rubbers, drying oils, and epoxies.
Claim 20
Dependent Claim
34 words
The improved anti-fouling marine coating composition according to claim 9 wherein the coating material comprises a resin selected from the group consisting of epoxy resins and polyglycol resins, and said mixture includes silicon dioxide.
Claim 21
Dependent Claim
29 words
The improved anti-fouling marine coating composition according to claim 9 wherein said mixture includes a coloring agent selected from the group consisting of inorganic pigments, organic pigments, and dyes.
Claim 22
Dependent Claim
25 words
The improved anti-fouling marine coating composition according to claim 9 wherein said mixture includes a controlled release agent to provide controlled release of said capsaicin.
Claim 23
Dependent Claim
20 words
The improved anti-fouling marine coating composition according to claim 9 wherein said mixture includes fine particles of abrasion resistant material.
Claim 24
Dependent Claim
25 words
The improved anti-fouling marine coating composition according to claim 9 wherein said mixture includes additives selected from the group consisting of plasticizers and rheology modifiers.
Claim 25
Dependent Claim
15 words
The improved anti-fouling marine coating composition according to claim 9 wherein said mixture includes pesticides.
Claim 26
Dependent Claim
29 words
The improved anti-fouling marine coating composition according to claim 9 wherein said mixture includes additives selected from the group consisting of tannic acid, oil of Cassia, and eucalyptus oil.
Claim 27
Independent Claim
82 words
A method for treating surfaces to be exposed to water to discourage the attachment of marine organisms to the surface comprising the steps of: mixing from about 25% to about 90% by weight of a selected base material with from about 10% to about 75% by weight of a capsaicin constituent having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units to form a mixture, and applying said mixture to the surface to be exposed to water.
Claim 28
Independent Claim
82 words
A method for treating surfaces to be exposed to water to discourage the attachment of marine organisms to the surface comprising the steps of: mixing from about 25% to about 90% by weight of a selected base material with from about 10% to about 75% by weight of a capsaicin constituent having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units to form a mixture, and applying said mixture to the surface to be exposed to water.
Claim 29
Dependent Claim
50 words
The method according to claim 24 wherein said capsaicin constituent is derived from dried finely divided chile pepper plant tissue selected from the group consisting of Habenaro and Bahamian chile peppers having a pungency in the range of from about 100,000 to about 300,000 Scoville Units in a natural state.
Claim 30
Dependent Claim
51 words
The method according to claim 24 wherein said capsaicin constituent is derived from oleoresin capsaicin extracted from chile pepper plant tissue selected from the group consisting of Habenaro and Bahamian chile peppers having a pungency in the range of from about 100,000 to about 300,000 Scoville Units in a natural state.
Claim 31
Dependent Claim
28 words
The method according to claim 24 wherein said capsaicin constituent is derived from a synthetic capsainoid compound selected from the group consisting of capsaicin (C) and dihydrocapsaicin (DHC).
Claim 32
Dependent Claim
48 words
The method according to claim 24 wherein said capsaicin constituent is a liquid solution comprising from about 20% to about 75% by weight capsaicin, from about 10% to about 50% by weight of silicon dioxide, and from about 15% to about 50% by weight of a selected solvent.
Claim 33
Dependent Claim
78 words
The method according to claim 24 wherein said capsaicin constituent is in a crystal form with each crystal comprising; from about 25% to about 50% by weight capsaicin having a pungency in the range of from about 100,000 to about 1,500,000 Scoville Units, from about 10% to about 50% by weight of a selected solvent, from about 10% to about 12.5% by weight of silicon dioxide, and from about 10% to about 12.5% by weight of sodium silicate.
Claim 34
Dependent Claim
70 words
The method according to claim 24 wherein said base material comprises from about 60% to about 80% resin selected from the group consisting of epoxy resins, and polyglycol resins, and from about 4% to about 8% of a hardening catalyst, and said capaiscin constituent is mixed with said base material in a proportion of from about 20% to about 60% by weight of said capaiscin constituent to said base material.
Claim 35
Dependent Claim
38 words
The method according to claim 24 wherein said base material comprises a binding agent selected from the group of materials consisting of polyvinyl chloride, chlorinated rubber, acrylic resins, vinyl chloride-vinyl acetate copolymers, butadiene-styrene-acrylonitrile rubbers, drying oils, and epoxies.
Claim 36
Dependent Claim
30 words
The method according to claim 24 wherein said base material comprises a resin selected from the group consisting of epoxy resins and polyglycol resins, and said mixture includes silicon dioxide.
Claim 37
Dependent Claim
23 words
The method according to claim 24 wherein said step of mixing includes adding fine particles of abrasion resistant material to said base material.
Claim 38
Dependent Claim
62 words
The method according to claim 24 wherein said base material is a molding material used in a molding process to form products, and said step of applying said mixture to the surface to be exposed to water comprises mixing said capsaicin constituent with said molding material, and thereafter molding products therefrom having least one surface which contains from about said capsaicin constituent.
Claim 39
Dependent Claim
46 words
An article of manufacture having an anti-fouling surface comprising at least one surface to be exposed to water, said at least one surface formed of materials containing capsaicin as an active ingredient in an effective amount to discourage the penetration and attachment of marine organisms thereto.
Claim 40
Dependent Claim
46 words
An article of manufacture having an anti-fouling surface comprising at least one surface to be exposed to water, said at least one surface formed of materials containing capsaicin as an active ingredient in an effective amount to discourage the penetration and attachment of marine organisms thereto.
Claim 41
Dependent Claim
28 words
An article of manufacture according to claim 35 in which said at least one surface is formed of materials containing from about 10% to about 75% of capsaicin.
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