Patent US5557046A successfully refreshed from Google Patents.
US9534121B2
Active / In Force
US
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Fouling control coating compositions
Assignee: Hempel AS
•
Filing: 2010-12-22
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Granted: 2017-01-03
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Expires: 2030-12-22
Abstract
Abstract The present application discloses a fouling control coating composition comprising a polysiloxane-based binder system, 0.01-20% by dry weight of one or more hydrophilic-modified polysiloxanes, and one or more biocides. The hydrophilic-modified polysiloxane may be a poly(oxyalkylene)-modified polysiloxane, e.g. a polysiloxane having grafted thereto poly(oxyalkylene) chains and/or having incorporated in the backbone thereof poly(oxyalkylene) chains. The poly(oxyalkylene) may e.g. be selected from polyoxyethylene, polyoxypropylene and poly(oxyethylene-co-oxypropylene) (polyethylene glycols/polypropylene glycols). The application further discloses a marine structure comprising on at least a part of the outer surface thereof an outermost coating prepared from the coating composition. Moreover, the application discloses the use of the combination of non-reactive hydrophilic-modified polysiloxanes and biocides, wherein the weight ratio between the hydrophilic-modified polysiloxanes and the biocides is in the range 1:0.2 to 1:6, for improving the antifouling properties of a polysiloxane based coating composition.
Inventors
- 👤 Peter Christian Weinrich Thorlaksen
- 👤 Anders Blom
- 👤 Ulrik Bork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:45
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1656; C09D5/1662; C09D5/1675; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08L; C08L83/00; C09D183/00; C09D183/04; C09D5/14; C09D5/1606; C09D7/125; C09D7/00; C09D7/40; C09D7/65; C08G; C08G77/00; C08G77/02; C08G77/04; C08G77/14; C08G77/16; C08G77/42; C08G77/46; C08L51/00; C08L51/08; C08L51/085
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
253 words
A fouling control coating composition comprising: A) 50-90% by dry weight of the coating composition of a polysiloxane-based binder system consisting of (i) a binder and optionally (ii) a cross-linking agent, wherein the binder (i) constitutes 20-90% by dry weight of the coating composition, and is a curable diorganopolysiloxane represented by general formula (1): wherein: each A 1 is independently selected from the group consisting of a hydroxyl group and a hydrolysable group; each A 2 is independently selected from the group consisting of an alkyl, aryl, alkenyl and a hydrolysable group; each A 3 and A 4 is independently selected from the group consisting of alkyl, aryl, and alkenyl; and a=1-25,000, b=1-2,500 and a+b is at least 30; wherein the cross-linking agent, if present, constitutes 0-10% by dry weight of the coating composition; B) 0 to 35% by dry weight of the coating composition of pigments and/or fillers; C) 0.01-20% by dry weight of one or more hydrophilic-modified polysiloxanes, wherein the hydrophilic-modified polysiloxanes are selected from poly(oxyalkylene)-modified polysiloxanes, wherein the poly(oxyalkylene) is selected from the group consisting of polyoxyethylene, polyoxypropylene and poly(oxyethylene-co-oxypropylene), and D) one or more biocides, wherein said one or more biocides are selected from the group consisting of an organic biocide and cuprous oxide; wherein the weight ratio between the one or more hydrophilic-modified polysiloxanes and the one or more biocides is in the range 1:0.2 to 1:6, and wherein the one or more hydrophilic-modified polysiloxanes do not contain groups that can react with the binder or any cross-linker.
Claim 2
Dependent Claim
253 words
A fouling control coating composition comprising: A) 50-90% by dry weight of the coating composition of a polysiloxane-based binder system consisting of (i) a binder and optionally (ii) a cross-linking agent, wherein the binder (i) constitutes 20-90% by dry weight of the coating composition, and is a curable diorganopolysiloxane represented by general formula (1): wherein: each A 1 is independently selected from the group consisting of a hydroxyl group and a hydrolysable group; each A 2 is independently selected from the group consisting of an alkyl, aryl, alkenyl and a hydrolysable group; each A 3 and A 4 is independently selected from the group consisting of alkyl, aryl, and alkenyl; and a=1-25,000, b=1-2,500 and a+b is at least 30; wherein the cross-linking agent, if present, constitutes 0-10% by dry weight of the coating composition; B) 0 to 35% by dry weight of the coating composition of pigments and/or fillers; C) 0.01-20% by dry weight of one or more hydrophilic-modified polysiloxanes, wherein the hydrophilic-modified polysiloxanes are selected from poly(oxyalkylene)-modified polysiloxanes, wherein the poly(oxyalkylene) is selected from the group consisting of polyoxyethylene, polyoxypropylene and poly(oxyethylene-co-oxypropylene), and D) one or more biocides, wherein said one or more biocides are selected from the group consisting of an organic biocide and cuprous oxide; wherein the weight ratio between the one or more hydrophilic-modified polysiloxanes and the one or more biocides is in the range 1:0.2 to 1:6, and wherein the one or more hydrophilic-modified polysiloxanes do not contain groups that can react with the binder or any cross-linker.
Claim 3
Dependent Claim
24 words
The coating composition according to claim 1 , wherein the one or more hydrophilic-modified polysiloxanes constitute 0.05-10% by dry weight of the coating composition.
Claim 4
Dependent Claim
24 words
The coating composition according to claim 2 , wherein the one or more hydrophilic-modified polysiloxanes constitute 2-7% by dry weight of the coating composition.
Claim 5
Dependent Claim
23 words
The coating composition according to claim 1 , wherein the one or more biocides constitutes 0.1-10% by dry weight of the coating composition.
Claim 6
Dependent Claim
37 words
The coating composition according to claim 1 , wherein the one or more biocides are selected from the group consisting of 3-(3,4-dichlorophenyl)-1,1-dimethylurea, N 2 -tert-butyl-N 4 -cyclopropyl-6-methylthio-1,3,5-triazine-2,4-diamine, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, bis(1-hydroxy-2(1H)-pyridinethionato-O,S)-(T-4) zinc, bis(1-hydroxy-2(1H)-pyridinethionato-O,S)-T-4) copper, zinc ethylene-1,2-bis-dithiocarbamate and cuprous oxide.
Claim 7
Dependent Claim
30 words
The coating composition according to claim 1 , wherein the one or more biocides are selected from the group consisting of zinc pyrithione, copper pyrithione, and 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one and cuprous oxide.
Claim 8
Dependent Claim
20 words
The coating composition according to claim 1 , wherein at least one biocide is a pyrithione complex or cuprous oxide.
Claim 9
Dependent Claim
20 words
The coating composition according to claim 1 , wherein one or more biocides is a pyrithione complex and cuprous oxide.
Claim 10
Dependent Claim
34 words
The coating composition according to claim 1 , wherein the hydrophilic groups of the one or more hydrophilic-modified polysiloxanes have a number average molecular weight (M n ) in the range of 400-10,000 g/mol.
Claim 11
Dependent Claim
27 words
The coating composition according to claim 1 , wherein the hydrophilic-modified polysiloxane has a number average molecular weight (M n ) in the range of 500-50,000 g/mol.
Claim 12
Dependent Claim
76 words
The coating composition according to claim 1 , wherein the hydrophilic-modified polysiloxanes constitute 0.05-10% by dry weight of the coating composition, one or more biocides constitutes 0.1-10% by dry weight of the coating composition, said coating composition having a viscosity in the range of 200-4,000 mPa·s measured at 25° C. in accordance with ISO 2555:1989, and said coating composition further comprises pigments and/or fillers in an amount of 0-35% by dry weight of the coating composition.
Claim 13
Dependent Claim
17 words
The coating composition according to claim 11 , wherein at least one biocide is a pyrithione complex.
Claim 14
Dependent Claim
17 words
The coating composition according to claim 1 , wherein at least one biocide is a pyrithione complex.
Claim 15
Dependent Claim
28 words
The coating composition according to claim 1 , wherein said hydrolysable groups in said curable diorganopolysiloxane of general formula (1) are selected from alkoxy groups and ketoxime groups.
Claim 16
Dependent Claim
62 words
The coating composition according to claim 1 , which comprises: 40-70% by wet weight of the total coating composition of a silanol-terminated polydiorganosiloxane and a cross-linker; 0.1-10% by wet weight of the total coating composition of said one or more biocides; and 0.1-10% by wet weight of the total coating composition of said one or more hydrophilic-modified polysiloxanes selected from poly(oxyalkylene)-modified polysiloxanes.
Claim 17
Dependent Claim
27 words
The coating composition according to claim 1 , wherein the cross-linking agent is selected from tetraethoxysilane; vinyltris(methylethyloximo)silane; methyltris(methylethyloximo)silane; vinyltrimethoxysilane; methyltrimethoxysilane; vinyltriisopropenoxysilane; and hydrolysis-condensation products of the same.
Claim 18
Dependent Claim
28 words
A marine structure comprising on at least a part of the outer surface thereof an outermost coating prepared from a coating composition as defined in claim 1 .
Claim 19
Dependent Claim
27 words
The structure according to claim 17 , wherein at least as part of the outer surface carrying the outermost coating is a submerged part of said structure.
Claim 20
Dependent Claim
40 words
The structure according to claim 17 , wherein the one or more biocides of the coating composition are selected from the group consisting of 3-(3,4-dichlorophenyl)-1,1-dimethylurea, N 2 -tert-butyl-N 4 -cyclopropyl-6-methylthio-1,3,5-triazine-2,4-diamine, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, bis(1-hydroxy-2(1H)-pyridinethionato-O,S)-(T-4) zinc, bis(1-hydroxy-2(1H)-pyridinethionato-O,S)-T-4) copper, zinc ethylene-1,2-bis-dithiocarbamate and cuprous oxide.
Claim 21
Dependent Claim
32 words
The structure according to claim 17 , wherein the one or more biocides of the coating composition are selected from the group consisting of zinc pyrithione, copper pyrithione, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one and cuprous oxide.
Claim 22
Dependent Claim
20 words
The structure according to claim 17 , wherein at least one biocide of the coating composition is a cuprous oxide.
Claim 23
Dependent Claim
23 words
The structure according to claim 17 , wherein one or more biocides of the coating composition is a pyrithione complex and cuprous oxide.
Claim 24
Dependent Claim
20 words
The structure according to claim 17 , wherein at least one biocide of the coating composition is a pyrithione complex.
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