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: 20160280842
    Abstract: The invention provides polyfunctional bio-based methacrylate oligomers, which are synthesized via the ring-opening reaction between at least one ethylenically unsaturated acid selected from methacrylic acid, acrylic acid, and crotonic acid, and a polyfunctional bio-based epoxy resin, such as epoxidized sucrose soyate. The extent of reaction may be varied to generate a family of methacrylate oligomers with differing degrees of methacrylate. These methacrylate oligomers can optionally be mixed with a reactive diluent, such as styrene, and cured using, for example, a thermally-activated free radical initiator to form a thermoset polymer with high modulus. The thermosets can be used to form composites, adhesives, coatings, and dental restorative materials. Methods of making the methacrylate oligomers are disclosed as are coating compositions and coated objects, such as dental restorative materials, using the methacrylate oligomers.
    Type: Application
    Filed: November 7, 2014
    Publication date: September 29, 2016
    Inventors: Dean C. WEBSTER, Lindsey BULTEMA, Jingling YAN
  • Publication number: 20160108172
    Abstract: Novel photodegradable polymers derived from biomass are provided, together with methods of making and methods of using said polymers.
    Type: Application
    Filed: October 15, 2015
    Publication date: April 21, 2016
    Inventors: Jayaraman Sivaguru, Mukund P. Sibi, Dean C. Webster, Saravana Kumar Rajendran, Ramya Raghunathan
  • Publication number: 20160096916
    Abstract: The invention provides highly functional epoxy resins that may be used themselves in coating formulations and applications but which may be further functionalized via ring-opening reactions of the epoxy groups yielding derivative resins with other useful functionalities. The highly functional epoxy resins are synthesized from the epoxidation of vegetable or seed oil esters of polyols having 4 or more hydroxyl groups/molecule. In one embodiment, the polyol is sucrose and the vegetable or seed oil is selected from corn oil, castor oil, soybean oil, safflower oil, sunflower oil, linseed oil, tall oil fatty acid, tung oil, vernonia oil, and mixtures thereof. Methods of making of the epoxy resin and each of its derivative resins are disclosed as are coating compositions and coated objects using each of the resins.
    Type: Application
    Filed: July 16, 2015
    Publication date: April 7, 2016
    Inventors: Dean C. WEBSTER, Partha Pratim SENGUPTA, Zhigang CHEN, Xiao PAN, Adlina PARAMARTA
  • Publication number: 20150307739
    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: February 27, 2015
    Publication date: October 29, 2015
    Applicant: NDSU RESEARCH FOUNDATION
    Inventors: Dean C. WEBSTER, Umesh HARKAL, James GARRETT
  • Patent number: 9169359
    Abstract: Novel silicone polymers are provided which possess grafted pendant hydrophilic polyalkylene oxide side chains and, optionally, reactive functional end groups. These features make them well suited for use in chemical, marine, biomedical and industrial applications, particularly those involving surface modifications.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: October 27, 2015
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Rajan B. Bodkhe
  • Publication number: 20150232691
    Abstract: This invention relates to bio-based polyfunctional carboxylic acids reacted with vinyl ether compounds to form liquid vinyl-blocked bio-based polyfunctional carboxylic acids. These liquid vinyl-blocked bio-based polyfunctional carboxylic acids can be mixed with a polyfunctional vegetable oil-based epoxy resin to form a homogeneous curable coating composition. Upon curing at elevated temperature, thermoset coatings are formed which have excellent hardness, solvent resistance, adhesion, and flexibility. The invention also relates to the use of a curable coating composition comprising at least one polyfunctional vegetable oil-based epoxy resin and at least one vinyl-blocked bio-based polyfunctional carboxylic acid, which may be coated onto a substrate and cured thermally. Methods of making the vinyl-blocked bio-based polyfunctional carboxylic acids and curable coating compositions and substrates containing the same are also disclosed.
    Type: Application
    Filed: September 17, 2013
    Publication date: August 20, 2015
    Inventors: Dean C. Webster, Erin Pavlacky, Curtiss Kovash, JR.
  • Patent number: 9096773
    Abstract: The invention provides highly functional epoxy resins that may be used themselves in coating formulations and applications but which may be further functionalized via ring-opening reactions of the epoxy groups yielding derivative resins with other useful functionalities. The highly functional epoxy resins are synthesized from the epoxidation of vegetable or seed oil esters of polyols having 4 or more hydroxyl groups/molecule. In one embodiment, the polyol is sucrose and the vegetable or seed oil is selected from corn oil, castor oil, soybean oil, safflower oil, sunflower oil, linseed oil, tall oil fatty acid, tung oil, vernonia oil, and mixtures thereof. Methods of making of the epoxy resin and each of its derivative resins are disclosed as are coating compositions and coated objects using each of the resins.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: August 4, 2015
    Assignee: NDSU RESEARCH FOUNDATION
    Inventors: Dean C. Webster, Partha Pratim Sengupta, Zhigang Chen, Xiao Pan, Adlina Paramarta
  • Patent number: 9051413
    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: Grant
    Filed: September 29, 2008
    Date of Patent: June 9, 2015
    Assignee: NDSU RESEARCH FOUNDATION
    Inventors: Dean C. Webster, Umesh Harkal, James Garrett
  • Publication number: 20150099128
    Abstract: This invention relates to coating compositions comprising a linear glycidyl carbamate (GC) resin and a curing agent. The linear GC-resins were synthesized using linear and cycloaliphatic diisocyanates and a combination of diols and optional triols with glycidol. The combination of linear diisocyanates and diols introduces a more linear structure in the GC-resin compositions.
    Type: Application
    Filed: April 18, 2013
    Publication date: April 9, 2015
    Inventors: Umesh D. Harkal, Andrew J. Muehlberg, Dean C. Webster
  • Publication number: 20140336301
    Abstract: The invention provides highly functional epoxy resins that may be used themselves in coating formulations and applications but which may be further functionalized via ring-opening reactions of the epoxy groups yielding derivative resins with other useful functionalities. The highly functional epoxy resins are synthesized from the epoxidation of vegetable or seed oil esters of polyols having 4 or more hydroxyl groups/molecule. In one embodiment, the polyol is sucrose and the vegetable or seed oil is selected from corn oil, castor oil, soybean oil, safflower oil, sunflower oil, linseed oil, tall oil fatty acid, tung oil, vernonia oil, and mixtures thereof. Methods of making of the epoxy resin and each of its derivative resins are disclosed as are coating compositions and coated objects using each of the resins.
    Type: Application
    Filed: February 4, 2011
    Publication date: November 13, 2014
    Inventors: Dean C. Webster, Partha Pratim Sengupta, Zhigang Chen, Xiao Pan, Adlina Paramarta
  • Patent number: 8852458
    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: Grant
    Filed: December 12, 2008
    Date of Patent: October 7, 2014
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Roopashree Suryanarayana
  • Publication number: 20140221549
    Abstract: Novel silicone polymers are provided which possess grafted pendant hydrophilic polyalkylene oxide side chains and, optionally, reactive functional end groups. These features make them well suited for use in chemical, marine, biomedical and industrial applications, particularly those involving surface modifications.
    Type: Application
    Filed: June 15, 2012
    Publication date: August 7, 2014
    Applicant: NDSU Research Foundation
    Inventors: Dean C. Webster, Rajan B. Bodkhe
  • Patent number: 8704348
    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: Grant
    Filed: April 19, 2013
    Date of Patent: April 22, 2014
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Zhigang Chen
  • Patent number: 8703838
    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 a 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: Grant
    Filed: February 20, 2009
    Date of Patent: April 22, 2014
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Neena Ravindran, Ankit Vora
  • Publication number: 20140061905
    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: April 19, 2013
    Publication date: March 6, 2014
    Applicant: NDSU Research Foundation
    Inventors: Dean C. Webster, Zhigang Chen
  • Patent number: 8629210
    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: Grant
    Filed: October 9, 2009
    Date of Patent: January 14, 2014
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Robert J. Pieper, Mohammed J. Nasrullah
  • Patent number: 8604152
    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: September 13, 2012
    Date of Patent: December 10, 2013
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Abdullah Ekin, Stacy Sommer
  • Publication number: 20130302628
    Abstract: A protective coating including a crosslinked polyester that is removable with a basic composition, as well as coated articles, methods of preparing a protective coating, and methods of using a protective coating.
    Type: Application
    Filed: April 19, 2013
    Publication date: November 14, 2013
    Applicant: NDSU Research Foundation
    Inventors: Tara J. Shedlosky, Gordon P. Bierwagen, Dean C. Webster, Andrew M. Huovinen
  • Publication number: 20130261251
    Abstract: Alkyd resin compositions which comprise the monomer-grafting polymerization of a) an alkyd, which is an ester of a polyol having 4 or more hydroxyl groups and an unsaturated fatty acid, and b) an unsaturated monomer having a carbon-carbon double bond are disclosed. The alkyd may be a partially esterified polyol. Coating compositions of containing the alkyd resin compositions of the invention are also disclosed.
    Type: Application
    Filed: June 16, 2011
    Publication date: October 3, 2013
    Applicant: NDSU RESEARCH FOUNDATION
    Inventors: Dean C. Webster, Thomas J. Nelson
  • Patent number: 8445174
    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: Grant
    Filed: January 30, 2012
    Date of Patent: May 21, 2013
    Assignee: NDSU Research Foundation
    Inventors: Dean C. Webster, Zhigang Chen