Patents by Inventor Dean C. Webster

Dean C. Webster 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).

  • Publication number: 20130036939
    Abstract: The invention relates to enamine resins which are the reaction products of a) an acetoacetylated resin, and a C1-C20 alkyl amine or a mixture of C1-C20 alkyl amines. The acetoacetylated resin is the reaction product of a polyol having 4 or more hydroxyl groups; and at least one acetoacetate. The invention also relates to an acetoacetylated resin which is the reaction product of a polyol having 4 or more hydroxyl groups and at least one acetoacetate, where a portion of the hydroxyl groups of the polyol are replaced by acetoacetate groups and the remaining hydroxyl groups are replaced by a saturated monofunctional carboxylic acid ester, unsaturated monofunctional carboxylic acid ester, or a mixture thereof; as well as to enamine resins prepared from these acetoacetylated resins. The invention also relates to curable coating compositions containing such resins or a mixture of those resins, at least one metallic drier compound; and optionally one or more solvents.
    Type: Application
    Filed: February 4, 2011
    Publication date: February 14, 2013
    Inventors: Dean C. Webster, Thomas J. Nelson, Xiao Pan
  • Publication number: 20130041099
    Abstract: A polymeric material, prepared by reacting a mixture comprising a polyorganosiloxane having one or more isocyanate-reactive functional groups, polyisocyanate, and polyol, is provided. The isocyanate-reactive functional groups, typically one or two, are attached to only a single end of the polyorganosiloxane chains. The polymeric material may be used to form coatings on a substrate and to inhibit fouling on surfaces exposed to aqueous conditions.
    Type: Application
    Filed: September 13, 2012
    Publication date: February 14, 2013
    Inventors: Dean C. Webster, Abdullah Ekin, Stacy Sommer
  • Patent number: 8299200
    Abstract: A polymeric material, prepared by reacting a mixture comprising a polyorganosiloxane having one or more isocyanate-reactive functional groups, polyisocyanate, and polyol, is provided. The isocyanate-reactive functional groups, typically one or two, are attached to only a single end of the polyorganosiloxane chains. The polymeric material may be used to form coatings on a substrate and to inhibit fouling on surfaces exposed to aqueous conditions.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: October 30, 2012
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Abdullah Ekin, Stacy Sommer
  • Publication number: 20120196948
    Abstract: Disclosed are photo sensitizers that include a polyol moiety covalently bonded to a fused aromatic moiety. Also disclosed is a method for improving UV laser ablation performance of a coating, such as a cationic UV curable coating, by incorporating an oxalyl-containing additive into the cationic UV curable or other coating. Oxalyl-containing sensitizers having the formula Q-O—C(O)—C(O)—O—R1 wherein Q represents a fused aromatic moiety and R1 is an alkyl or aryl group, are also disclosed, as are oxalyl-containing oxetane resins, oxalyl-containing polyester polyols, and cationic UV curable coating formulations that include oxalyl-containing additives.
    Type: Application
    Filed: January 30, 2012
    Publication date: August 2, 2012
    Applicant: NDSU Research Foundation
    Inventors: Dean C. Webster, Zhigang Chen
  • Patent number: 8114567
    Abstract: Disclosed are photosensitizers that include a polyol moiety covalently bonded to a fused aromatic moiety. Also disclosed is a method for improving UV laser ablation performance of a coating, such as a cationic UV curable coating, by incorporating an oxalyl-containing additive into the cationic UV curable or other coating. Oxalyl-containing sensitizers having the formula Q-O—C(O)—C(O)—O—R1, wherein Q represents a fused aromatic moiety and R1 is an alkyl or aryl group, are also disclosed, as are oxalyl-containing oxetane resins, oxalyl-containing polyester polyols, and cationic UV curable coating formulations that include oxalyl-containing additives.
    Type: Grant
    Filed: April 21, 2007
    Date of Patent: February 14, 2012
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Zhigang Chen
  • Patent number: 8097741
    Abstract: The invention relates to solvent-containing two-component polyurethane moisture cured hybrid sol-gel coating formulation comprising 1) an epoxy-functional binder with carbamate functionality and 2) a blended curing component comprising at least one sol gel precursor and an amine crosslinker.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: January 17, 2012
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Dipak Chattopadhyay
  • Patent number: 8062729
    Abstract: A polymeric material may be prepared by reacting a composition that includes polyol, polyisocyanate, and polyorganosiloxane having functional groups capable of reacting with the polyisocyanate, wherein the polymeric material has a surface which includes raised microdomains.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: November 22, 2011
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Partha S. Majumdar
  • Publication number: 20110263753
    Abstract: The invention relates to novel aqueous coating compositions containing epoxy urethane (glycidyl carbamate) functional resin. An aqueous coating composition comprises a polyfunctional oligomer having at least two epoxy urethane functional groups and a polyalkylene oxide chain, an optional surfactant, and water. The aqueous coating compositions of the invention can be dispersed in water with or without added surfactants to form a dispersion containing no volatile organic solvent. The invention provides a method for making aqueous coating compositions containing epoxy urethane functional resin as well. Water-dispersible epoxy urethane compounds of the aqueous coating compositions are also provided.
    Type: Application
    Filed: July 20, 2010
    Publication date: October 27, 2011
    Inventors: Umesh D. Harkal, Andrew J. Muehlberg, Peter A. Edwards, Dean C. Webster
  • Patent number: 8017795
    Abstract: Disclosed are coating formulations that include a copolyester and a vinyl ether in which the copolyester is produced by copolymerizing a monomer composition that includes a fused aromatic diacid monomer, an unsaturated diacid monomer, and a polyol. Also disclosed are methods for producing a laser-ablatable film on a surface of a substrate. The method includes coating the substrate with a coating formulation that includes a copolyester and a vinyl ether and polymerizing the coating formulation. The copolyester includes a fused aromatic moiety covalently bonded therein. Novel radiation curable sensitizers that can be used in the preparation of radiation curable polymer films having improved laser ablation properties are also described.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: September 13, 2011
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Zhigang Chen, Neena Ravindran
  • Publication number: 20110218290
    Abstract: A zwitterionic/amphiphilic pentablock copolymer was prepared using atom transfer radical polymerization (ATRP). The pentablock copolymer is prepared for the atom transfer radical polymerization of a PDMS-PEO-Br macroinitiator and SBMA. The pentablock copolymer is incorporated into a polyurethane coating composition which is useful for antifouling and/or fouling release applications.
    Type: Application
    Filed: October 9, 2009
    Publication date: September 8, 2011
    Applicant: NDSU RESEARCH FOUNDATION
    Inventors: Dean C. Webster, Robert J. Pieper, Mohammed J. Nasrullah
  • Publication number: 20110195041
    Abstract: Provided are antimicrobial compositions including at least one biocide covalently bound to a polyurethane. The biocide moiety may comprise triclosan, a triclosan derivative, or a quaternary ammonium salt. Further provided are methods of reducing biofilm formation or microbial growth on a surface, the method including applying to the surface an antimicrobial composition including at least one biocide covalently attached to a polyurethane.
    Type: Application
    Filed: October 12, 2009
    Publication date: August 11, 2011
    Applicant: NDSU RESEARCH FOUNDATION
    Inventors: Bret Ja Chisholm, Dean C. Webster, Alexander John Kugel
  • Patent number: 7989074
    Abstract: A polymeric material may be prepared by reacting a mixture comprising an amino functional polyorganosiloxane, polyisocyanate, and polyol. The polyol may comprise a hydroxy-functional poly(meth)acrylate. The polymeric material may be used as a coating for a substrate and may inhibit fouling on a surface exposed to aquatic conditions.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: August 2, 2011
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Robert J. Pieper, Abdullah Ekin
  • Publication number: 20110049429
    Abstract: This invention relates to coating compositions comprising a glycidyl carbamate functional resin, an epoxy resin, and an amine curing agent. The coating compositions have improved corrosion resistance, particularly on untreated steel substrates.
    Type: Application
    Filed: December 12, 2008
    Publication date: March 3, 2011
    Applicant: NDSU RESEARCH FOUNDATION
    Inventors: Dean C. Webster, Roopashree Suryanarayana
  • Publication number: 20110046257
    Abstract: The invention provides an improved unsaturated polyester prepared from the polycondensation of unsaturated diacid monomers or unsaturated acid anhydride mononers and polyol monomers and. optionally, one or more saturated aliphatic or aromatic diacid monomers or anhydride monomers thereof. The improvement comprises 0.5 to 50 weight percent, based on the total monomer weight, of an hydroxyalkyl-functional siloxane of formula (1) below. The invention also relates to a UV curable coating formulation containing a siloxane-functional unsaturated polyester resin, a vinyl ether functional diluents and a photoinitiator. The invention further provides a method of preparing an article with a low-surface energy coating. According to the method, at least one surface of an article with a coating formulation of the invention; and the coating is then cured as described above with UV light to form a low-surface energy coating on the surface.
    Type: Application
    Filed: February 20, 2009
    Publication date: February 24, 2011
    Applicant: NORTH DAKOTA STATE UNIVERSITY
    Inventors: Dean C. Webster, Neena Ravindran, Ankit Vora
  • Publication number: 20100323190
    Abstract: A polymeric material may be prepared by reacting a composition that includes polyol, polyisocyanate, and polyorganosiloxane having functional groups capable of reacting with the polyisocyanate, wherein the polymeric material has a surface which includes raised microdomains.
    Type: Application
    Filed: July 11, 2007
    Publication date: December 23, 2010
    Inventors: Dean C. Webster, Partha S. Majumdar
  • Publication number: 20100319580
    Abstract: The invention relates to alcohol-modified glycidyl carbamate resins wherein at least some of the glycidol groups in the resin have been replaced with an alcohol. The invention also relates to coating compositions containing the resins.
    Type: Application
    Filed: September 29, 2008
    Publication date: December 23, 2010
    Inventors: Dean C. Webster, Umesh Harkal, James Garrett
  • Publication number: 20100280148
    Abstract: A polymeric material, prepared by reacting a mixture comprising a polyorganosiloxane having one or more isocyanate-reactive functional groups, polyisocyanate, and polyol, is provided. The isocyanate-reactive functional groups, typically one or two, are attached to only a single end of the polyorganosiloxane chains. The polymeric material may be used to form coatings on a substrate and to inhibit fouling on surfaces exposed to aqueous conditions.
    Type: Application
    Filed: June 9, 2008
    Publication date: November 4, 2010
    Inventors: Dean C. Webster, Abdullah Ekin, Stacy Sommer
  • Patent number: 7799434
    Abstract: Polysiloxanes terminated with one or more hydroxy functional carbamate groups are provided. The polymers may have the formula (I) wherein R1, R2, R3, and R4 are independently hydrogen, C1-C10 alkyl, C1-C10 fluoro-substituted alkyl; cyclopentyl, cyclohexyl, benzyl, toluoyl, xylyl and/or phenyl; R5 and R6 are linking groups; R15 and R16 are independently hydrogen, C1-C10 alkyl, cyclopentyl, cyclohexyl, benzyl, toluoyl, xylyl or phenyl; and L1 and L2 are linking groups. Typically, x is such that the polymer has a molecular weight of about 1,000 to 100,000. Other polymeric materials produced by reacting with an isocyanate functional compound or a lactone and coating compositions containing such polymeric materials are also provided.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: September 21, 2010
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Abdullah Ekin
  • Publication number: 20100216951
    Abstract: The invention relates to solvent-containing two-component polyurethane moisture cured hybrid sol-gel coating formulation comprising 1) an epoxy-functional binder with carbamate functionality and 2) a blended curing component comprising at least one sol gel precursor and an amine crosslinker.
    Type: Application
    Filed: March 31, 2008
    Publication date: August 26, 2010
    Applicant: NDSU RESEARCH FOUNDATION
    Inventors: Dean C. Webster, Dipak Chattopadhyay
  • Patent number: 7776956
    Abstract: The invention relates to novel aqueous coating compositions containing epoxy urethane (glycidyl carbamate) functional resin. An aqueous coating composition comprises a polyfunctional oligomer having at least two epoxy urethane functional groups and a polyalkylene oxide chain, a surfactant and water. The aqueous coating compositions of the invention can be dispersed in water with added surfactants to form a dispersion containing no volatile organic solvent. The invention provides a method for making aqueous coating compositions containing epoxy urethane functional resin as well. Water-dispersible epoxy urethane compounds of the aqueous coating compositions are also provided.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: August 17, 2010
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Peter A. Edwards