Patents by Inventor Dean Thetford

Dean Thetford 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: 20240052164
    Abstract: A composition including a particulate solid, a plastic material and a polymer, wherein the polymer is a polyamide with fatty terminal end groups; wherein the polyamide is a condensation reaction product of a diamine and a diacid; wherein the polymer has from 5 to 13 monomer units; wherein the diamine is a saturated C2-C12, linear, branched, or cyclic diamine; wherein the amine groups of the diamine are primary or secondary; wherein the diacid is a saturated C20-C50 branched carboxylic diacid; and wherein each of the fatty terminal end groups are independently a C6-C36 linear or branched carbon chain which is attached to the polyamide via an amide or an imide bond.
    Type: Application
    Filed: December 16, 2021
    Publication date: February 15, 2024
    Inventors: Dean Thetford, Elliot Coulbeck, SAĆ A GREEN
  • Patent number: 11661522
    Abstract: The invention provides dispersed inorganic mixed metal oxide pigment compositions in a hydrocarbon media utilizing a dispersant having polyisobutylene succinic anhydride structure reacted with a non-polymeric amino ether/alcohol to disperse a mixed metal oxide pigment in the media. The metal oxide pigment is of the type used to color ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and subsequently firing the colored article is also described.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: May 30, 2023
    Assignee: Lubrizol Advanced Materials, Inc
    Inventors: Elliot Coulbeck, Dean Thetford
  • Patent number: 11649309
    Abstract: Polymeric dispersants are disclosed that include an acrylic backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. Desirably dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: May 16, 2023
    Assignee: Lubrizol Advanced Materials, Inc
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Publication number: 20230075938
    Abstract: A composition including a particulate solid, a plastic material and a polymer represented by formula (1): A-(B)n (1) wherein: A is a residue of a polyether having a polyether segment and 2 or 3 amine groups; wherein the polyether segment is derived from monomers of at least one of ethylene oxide, propylene oxide, or tetrahydrofuran; wherein the polyether segment has a number average molecular weight of from 160 to 2000; and wherein the amine groups are primary or secondary; each B is independently a residue of a C6-C50 fatty acid or fatty acid anhydride, which is linear or branched, and which is saturated or unsaturated; and n is 2 or 3; wherein each B is independently bound to A by an amide bond or a cyclic imide group. Methods of using, and use of, a polymer represented by the formula (1) as a dispersant in a composition further comprising a particulate solid and a plastic material.
    Type: Application
    Filed: February 2, 2021
    Publication date: March 9, 2023
    Inventors: Elliot Coulbeck, Sasa Green, Dean Thetford
  • Patent number: 11578211
    Abstract: The present invention relates to a dispersant having a tertiary or quaternary amine anchoring group and a solubilizing polymer selected from C8-50 fatty acid; a C8-50 ak(en)yl substituted succinic acid, anhydride or partial ester; a dimer or trimer fatty acid; and/or polymers from repeating units of polyesters, polyethers, polyacrylate, polyamides, polyurethanes or mixtures of said repeating units in a random or blocky copolymer. The dispersants are an improvement in that the alkylene connecting group between the tertiary or quaternized amine and the solubilizing polymer lacks abstractable hydrogen atoms at the geminal carbon atom from the nitrogen of the tertiary or quaternized amine over the prior art. The dispersants are useful as dispersants with improved thermal stability and low amounts yellow color after aging at elevated temperatures.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: February 14, 2023
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Dean Thetford, Neil L. Simpson
  • Publication number: 20230029061
    Abstract: A two-component hybrid coating system which contains both an organic film forming polyacrylate polymer and particles capable of forming a geopolymer is provided. When the two reactive components are combined, a hybrid coating composition is provided containing a film forming organic polyacrylate polymer component and a geopolymer component.
    Type: Application
    Filed: December 14, 2020
    Publication date: January 26, 2023
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Nathan J. Bartlett, Vic Stanislawczyk, Dean Thetford
  • Publication number: 20220298422
    Abstract: The present invention relates to a dispersant derived from anhydride functionalized polyester derived from carboxylic acid functionalized polyester. The anhydride functionalized polyester is then reacted with a multi-amine species forming amide and salt bonds. The technology allows lower reaction temperatures when the multi-amine species is present. The lower reaction temperature allows the use of a broader selection of polyester repeat units.
    Type: Application
    Filed: April 5, 2022
    Publication date: September 22, 2022
    Inventors: ELLIOT COULBECK, DEAN THETFORD
  • Publication number: 20220154016
    Abstract: The present invention relates to a dispersant derived from an alcohol terminated polymer and via an anhydride intermediate. The anhydride functionalized polyester is then reacted with a multi-amine species forming amide and salt bonds.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 19, 2022
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Elliot Coulbeck, Dean Thetford
  • Publication number: 20220154039
    Abstract: The present invention relates to a dispersant derived from an alcohol terminated polymer and via an anhydride intermediate. The anhydride functionalized polyester is then reacted with a multi-amine species forming amide and salt bonds.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 19, 2022
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Elliot Coulbeck, Dean Thetford
  • Patent number: 11326105
    Abstract: The present invention relates to a dispersant derived from anhydride functionalized polyester derived from carboxylic acid functionalized polyester. The anhydride functionalized polyester is then reacted with a multi-amine species forming amide and salt bonds. The technology allows lower reaction temperatures when the multi-amine species is present. The lower reaction temperature allows the use of a broader selection of polyester repeat units.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: May 10, 2022
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Elliot Coulbeck, Dean Thetford
  • Publication number: 20220002157
    Abstract: The disclosed technology relates to the production of graphene by exfoliation in the presence of a dispersant, and the composition of graphene produced thereby.
    Type: Application
    Filed: November 19, 2019
    Publication date: January 6, 2022
    Applicant: The Lubrizol Corporation
    Inventors: Thomas S. Corrigan, Paul E. Adams, John S. Manka, Eric Mock, Dean Thetford
  • Publication number: 20210331130
    Abstract: The present invention relates to a dispersant polymer and a dispersion containing the dispersant polymer. The dispersant polymer is derived from a polyamine species reacted with two different polyester chains, one of which includes a monomeric repeat unit derived from the polyesterification reaction of lactide, glycolide, lactic acid, or glycolic acid monomers. The technology includes preparing the dispersant polymer at lower temperature to allow the use of a broader selection of polyester repeat units.
    Type: Application
    Filed: September 6, 2019
    Publication date: October 28, 2021
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Elliot Coulbeck, Dean Thetford, Sasa Green
  • Publication number: 20210309876
    Abstract: The invention provides dispersed inorganic mixed metal oxide pigment compositions in a hydrocarbon media utilizing a dispersant having polyisobutylene succinic anhydride structure reacted with a non-polymeric amino ether/alcohol to disperse a mixed metal oxide pigment in the media. The metal oxide pigment is of the type used to color ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and subsequently firing the colored article is also described.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventors: Elliot Coulbeck, Dean Thetford
  • Patent number: 11066565
    Abstract: The invention provides dispersed inorganic mixed metal oxide pigment compositions in a hydrocarbon media utilizing a dispersant having polyisobutylene succinic anhydride structure reacted with a non-polymeric amino ether/alcohol to disperse a mixed metal oxide pigment in the media. The metal oxide pigment is of the type used to color ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and subsequently firing the colored article is also described.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: July 20, 2021
    Assignee: Lubrizol Advanced Materials, Inc
    Inventors: Elliot Coulbeck, Dean Thetford
  • Publication number: 20200325264
    Abstract: Polymeric dispersants are disclosed that include an acrylic backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. Desirably dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin.
    Type: Application
    Filed: June 26, 2020
    Publication date: October 15, 2020
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Patent number: 10745506
    Abstract: Polymeric dispersants are disclosed that include an acrylic backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. Desirably dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: August 18, 2020
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Publication number: 20200230561
    Abstract: The present invention relates to a dispersant derived from anhydride functionalized polyester derived from carboxylic acid functionalized polyester. The anhydride functionalized polyester is then reacted with a multi-amine species forming amide and salt bonds. The technology allows lower reaction temperatures when the multi-amine species is present. The lower reaction temperature allows the use of a broader selection of polyester repeat units.
    Type: Application
    Filed: September 18, 2018
    Publication date: July 23, 2020
    Inventors: ELLIOT COULBECK, DEAN THETFORD
  • Patent number: 10675889
    Abstract: The invention provides dispersed inorganic mixed metal oxide pigment compositions in a non-aqueous media utilizing a dispersant having polyisobutylene succinic anhydride structure to disperse a mixed metal oxide pigment in the media. The metal oxide pigment is of the type used to colour ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and subsequently firing the coloured article is also described.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: June 9, 2020
    Assignee: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventor: Dean Thetford
  • Patent number: 10584256
    Abstract: The invention provides dispersed inorganic mixed metal oxide pigment compositions in a non-aqueous media utilizing a polyester dispersant having a terminal hydroxyl, tertiary amine or quaternized amine anchoring group and a mixed metal oxide pigment. The metal oxide pigment is of the type used to colour ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and firing the coloured article is also described.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: March 10, 2020
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Dean Thetford, David Cartridge
  • Publication number: 20200071552
    Abstract: The invention provides dispersed inorganic mixed metal oxide pigment compositions in a hydrocarbon media utilizing a dispersant having polyisobutylene succinic anhydride structure reacted with a non-polymeric amino ether/alcohol to disperse a mixed metal oxide pigment in the media. The metal oxide pigment is of the type used to color ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and subsequently firing the colored article is also described.
    Type: Application
    Filed: December 8, 2017
    Publication date: March 5, 2020
    Inventors: Elliot Coulbeck, Dean Thetford