Patents by Inventor David Neil Williams
David Neil Williams has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9249314Abstract: The invention relates to a coating composition for use as a coating to prevent fouling in a marine environment, comprising: a) a curable polysiloxane polyoxyalkylene block copolymer; b) a catalyst of general formula wherein each R1 is independently a monovalent hydrocarbon group, each R2 is independently selected from a hydrogen atom, a monovalent organic group, a siloxane group, or a silyl group of formula —SiR33, wherein each R3 is independently a monovalent hydrocarbon group, and n is an integer having a value of 0 or greater, and optionally: c) a filler and/or pigment.Type: GrantFiled: December 2, 2014Date of Patent: February 2, 2016Assignee: AKZO NOBEL COATINGS INTERNATIONAL B.V.Inventors: David Neil Williams, David Anthony Stark, Lyndsey Tyson
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Publication number: 20150087773Abstract: The invention relates to a coating composition for use as a coating to prevent fouling in a marine environment, comprising: a) a curable polysiloxane polyoxyalkylene block copolymer; b) a catalyst of general formula wherein each R1 is independently a monovalent hydrocarbon group, each R2 is independently selected from a hydrogen atom, a monovalent organic group, a siloxane group, or a silyl group of formula —SiR33, wherein each R3 is independently a monovalent hydrocarbon group, and n is an integer having a value of 0 or greater, and optionally: c) a filler and/or pigment.Type: ApplicationFiled: December 2, 2014Publication date: March 26, 2015Inventors: David Neil WILLIAMS, David Anthony STARK, Lyndsey TYSON
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Patent number: 8921503Abstract: The invention relates to a coating composition for use as a coating to prevent fouling in a marine environment, comprising: a) a curable polysiloxane polyoxyalkylene block copolymer; b) a catalyst of general formula (i) wherein each R1 is independently a monovalent hydrocarbon group, each R2 is independently selected from a hydrogen atom, a monovalent organic group, a siloxane group, or a silyl group of formula —SiR33, wherein each R3 is independently a monovalent hydrocarbon group, and n is an integer having a value of 0 or greater, and optionally: c) a filler and/or pigment.Type: GrantFiled: March 28, 2012Date of Patent: December 30, 2014Assignee: Akzo Nobel Coatings International B.V.Inventors: David Neil Williams, David Anthony Stark, Lyndsey Tyson
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Patent number: 8771798Abstract: An anti-fouling composition which comprises a cured or cross-linked polymer free of perfluoropolyether moieties and a fluid fluorinated alkyl- or alkoxy-containing polymer or oligomer. Preferably, the fluorinated alkyl- or alkoxy-containing polymer or oligomer comprises a repeating unit of the general formula: —{[CFR—(CFR)m—(O)n]p—[CFR—O]q}— wherein n is 0 or 1, m is an integer from 0 to 4, R independently is H, F, Cl, Br, or CF3, and the ratio q/p is 0-10, and the fluorine-free polymer is an organosiloxane-containing polymer comprising a repeating unit of the general structure —[SiR1R2—O]—, wherein R1 and R2 are independently hydrogen, alkyl, aryl, aralkyl, or a vinyl group.Type: GrantFiled: August 10, 2012Date of Patent: July 8, 2014Assignee: Akzo Nobel N.V.Inventors: David Neil Williams, Nigel Ivor Edward Shewring, Adrian James Lee
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Publication number: 20140010853Abstract: The invention relates to a coating composition for use as a coating to prevent fouling in a marine environment, comprising: a) a curable polysiloxane polyoxyalkylene block copolymer; b) a catalyst of general formula (i) wherein each R1 is independently a monovalent hydrocarbon group, each R2 is independently selected from a hydrogen atom, a monovalent organic group, a siloxane group, or a silyl group of formula —SiR33, wherein each R3 is independently a monovalent hydrocarbon group, and n is an integer having a value of 0 or greater, and optionally: c) a filler and/or pigment.Type: ApplicationFiled: March 28, 2012Publication date: January 9, 2014Applicant: Akzo Nobel Coatings International B.V.Inventors: David Neil Williams, David Anthony Stark, Lyndsey Tyson
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Patent number: 8574719Abstract: An anti-fouling coating composition comprising (i) a curable polymer and (ii) an organosilicone polymer. This anti-fouling coating composition has a low surface energy, has suitable elastomeric properties, decreases the settlement of fouling organisms and their adhesion strength, and can be used as a clear coat without a misty or milky appearance.Type: GrantFiled: April 28, 2008Date of Patent: November 5, 2013Assignee: Akzo Nobel Coatings International B.V.Inventors: Cait Marie Davies, David Neil Williams, Kathryn Joyce Willett
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Patent number: 8450443Abstract: A process to physically deter fouling from a substrate in an aquatic fouling environment, which process comprises forming on the substrate, before exposure to the said environment, a coating composition comprising (i) a curable polyorganosiloxane polyoxyalkylene block copolymer having at least two reactive groups X situated on the copolymer chain and (ii) an organosilicon crosslinking agent and/or a catalyst.Type: GrantFiled: April 28, 2008Date of Patent: May 28, 2013Assignee: Akzo Nobel Coatings International B.V.Inventors: David Neil Williams, David Anthony Stark, Adrian James Lee, Cait Marie Davies
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Publication number: 20120309882Abstract: An anti-fouling composition which comprises a cured or cross-linked polymer free of perfluoropolyether moieties and a fluid fluorinated alkyl- or alkoxy-containing polymer or oligomer. Preferably, the fluorinated alkyl- or alkoxy-containing polymer or oligomer comprises a repeating unit of the general formula: —{[CFR—(CFR)m—(O)n]p—[CFR—O]q}- wherein n is 0 or 1, m is an integer from 0 to 4, R independently is H, F, Cl, Br, or CF3, and the ratio g/p is 0-10, and the fluorine-free polymer is an organosiloxane-containing polymer comprising a repeating unit of the general structure —[SiR1R2—O]—, wherein R1 and R2 are independently hydrogen, alkyl, aryl, aralkyl, or a vinyl group.Type: ApplicationFiled: August 10, 2012Publication date: December 6, 2012Applicant: AKZO NOBEL N.V.Inventors: David Neil WILLIAMS, Nigel Ivor Edward SHEWRING, Adrian James LEE
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Publication number: 20100183886Abstract: An anti-fouling coating composition comprising (i) a curable polymer and (ii) an organosilicone polymer. This anti-fouling coating composition has a low surface energy, has suitable elastomeric properties, decreases the settlement of fouling organisms and their adhesion strength, and can be used as a clear coat without a misty or milky appearance.Type: ApplicationFiled: April 28, 2008Publication date: July 22, 2010Applicant: Akzo Nobel Coatings International B.V.Inventors: Cait Marie Davies, David Neil Williams, Kathryn Joyce Willett
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Publication number: 20100137529Abstract: A process to physically deter fouling from a substrate in an aquatic fouling environment, which process comprises forming on the substrate, before exposure to the said environment, a coating composition comprising (i) a curable polyorganosiloxane polyoxyalkylene block copolymer having at least two reactive groups X situated on the copolymer chain and (ii) an organosilicon crosslinking agent and/or a catalyst.Type: ApplicationFiled: April 28, 2008Publication date: June 3, 2010Applicant: AKZO NOBEL COATINGS INTERNATIONAL B.V.Inventors: David Neil Williams, David Anthony Stark, Adrian James Lee, Cait Marie Davies
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Patent number: 6899955Abstract: A process for inhibiting the fouling of a substrate in a marine fouling environment, which comprises forming on the substrate, before exposure to the said environment, a coating comprising a curable fluorinated resin of the general formula: W-L-YFC—O—Rf—CFY-L-W wherein: W is a group of the general formula —Si(R1)?(OR2)3-?, wherein ?=0, 1, or 2, preferably ?=0, R1 and R2 independently have the meaning of linear of branched C1-C6 alkyl groups, optionally containing one or more ether groups, or C7-C12 aryl or alkyl groups, and preferably R1 and R2 are C1-C4 alkyl groups; L is an organic linking group; Y is F or CF3; and Rf is a group having an average molecular weight by number between 350 and 8000, preferably between 500 and 3000, and comprising repeating units having at least one of the following structures randomly distributed along the chain: —CFXO—, CF2CF2O—, CF2CF2CF2O—, CF2CF2CF2CF2O—, CR4R5CF2CF2O—, —(CF(CF3)CF2O)—, —CF2CF(CF3)O—, wherein X is F or CF3, R4 and R5 independently have the meaning of H, Cl,Type: GrantFiled: June 1, 2001Date of Patent: May 31, 2005Assignees: International Coatings Limited, Ausimont S.p.A.Inventors: Robert Lines, David Neil Williams, Stefano Turri
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Patent number: 6723376Abstract: A process for inhibiting the fouling of a substrate in a fouling environment, which comprises forming on the substrate, before exposure to the environment, a coating comprising a film-forming polymer (A) carrying unreacted curable silicon-containing functional groups providing latent reactivity, and thereafter applying a layer comprising a curable polymeric fouling-inhibiting material (B), more especially a curable polysiloxane or a curable flourine-containing polymer, and bonding the applied layer to the coating by a condensation curing reaction involving the unreacted functional groups thereon. The initial coating can be applied over a range of worn or damaged anti-fouling coatings. The sequential application of layers is a simpler, more flexible and more controllable procedure than is offered by complex systems designed to produce outer siloxane-rich regions. Relatively long periods are achievable.Type: GrantFiled: June 22, 2000Date of Patent: April 20, 2004Assignee: International Coatings LimitedInventors: Trevor Hamilton, Gergina Elizabth Green, David Neil Williams
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Publication number: 20030161962Abstract: A process for inhibiting the fouling of a substrate in a marine fouling environment, which comprises forming on the substrate, before exposure to the said environment, a coating comprising a curable fluorinated resin of the general formula: W-L-YFC—O—Rf—CFY-L-W wherein: W is a group of the general formula —Si(R1)&agr;(OR2)3-&agr;, wherein &agr;=0, 1, or 2, preferably &agr;=0, R1 and R2 independently have the meaning of linear of branched C1-C6 alkyl groups, optionally containing one or more ether groups, or C7-C12 aryl or alkyl groups, and preferably R1 and R2 are C1-C4 alkyl groups; L is an organic linking group; Y is F or CF3; and Rf is a group having an average molecular weight by number between 350 and 8000, preferably between 500 and 3000, and comprising repeating units having at least one of the following structures randomly distributed along the chain: —CFXO—, CF2CF2O—, CF2CF2CF2O—, CF2CF2CF2CF2O—, CR4R5CF2CF2O—, —(CF(CF3)CType: ApplicationFiled: April 22, 2003Publication date: August 28, 2003Inventors: Robert Lines, David Neil Williams, Stefano Turri
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Publication number: 20020192181Abstract: An anti-fouling composition which comprises a cured or cross-linked polymer free of perfluoropolyether moieties and a fluid fluorinated alkyl- or alkoxy-containing polymer or oligomer.Type: ApplicationFiled: March 21, 2002Publication date: December 19, 2002Inventors: David Neil Williams, Nigel Ivor Edward Shewring, Adrian James Lee