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).

  • Patent number: 9534123
    Abstract: The present invention relates to a polymer, and a composition containing a particulate solid, an aqueous medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for millbases, dispersions, coatings and inks.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: January 3, 2017
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N. Richards
  • Patent number: 9506006
    Abstract: The present invention provides a composition and a concentrate, comprising: (a) a major amount of an oil of lubricating viscosity, (b) a quaternary ammonium salt of a hydrocarbyl-substituted acylating agent condensation product, and (c) an optional amount of a succinimide dispersant different from (b), and a use of the composition or concentrate for lubricating an engine. In a further embodiment, the invention provides the use of a quaternary ammonium salt of a hydrocarbyl-substituted acylating agent condensation product as a dispersant in a lubricating composition, and as a synergistic dispersant combination with a different succinimide dispersant.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: November 29, 2016
    Assignee: The Lubrizol Corporation
    Inventors: Joanne L. Jones, Dean Thetford, David J. Moreton, Matthew D. Gieselman
  • Publication number: 20160264731
    Abstract: The present invention relates to a composition containing a particulate solid, an organic or aqueous medium and a dispersant that may be a reaction product of an organic di or polyepoxide with a primary amine, aminoalcohol, amino acid, hydroxyacid or alcohol containing a fused or non-fused aromatic imide group. The invention further provides compositions for coatings, inks, toners, plastic materials (such as thermoplastics), plasticisers, plastisols, crude grinding and flush.
    Type: Application
    Filed: October 21, 2014
    Publication date: September 15, 2016
    Inventors: Dean Thetford, Andrew J. Shooter, Robert A. Jennings
  • Publication number: 20160268633
    Abstract: A polymeric polycarboxylic acid functionalized with polyether groups is disclosed as an additive to a lithium-ion battery to help improve properties such as energy density, cycle durability, or other durability issues.
    Type: Application
    Filed: October 10, 2014
    Publication date: September 15, 2016
    Inventors: John D. Schofield, Elliot Coulbeck, Stuart N. Richards, Patrick J. Sunderland, Dean Thetford
  • Publication number: 20160257774
    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: October 29, 2014
    Publication date: September 8, 2016
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Publication number: 20160251523
    Abstract: Polymeric dispersants are disclosed that include a urethane backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a single or fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. The dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin Desirably, the imide groups are derived from an imide that has two isocyanate reactive groups such that the imide is attached to the urethane backbone at two separate locations.
    Type: Application
    Filed: October 24, 2014
    Publication date: September 1, 2016
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Publication number: 20160237196
    Abstract: A polyurethane dispersant is described that comprises a reaction product of a polyisocyanate with a) a component supplying a anchoring imide group wherein the carbonyl groups of the imide are bonded to a fused or non-fused aromatic ring, b) at least one solvent-solubilising chain, and other optional components to build molecular weight or modify the interaction of the dispersant with various particulates or continuous media.
    Type: Application
    Filed: April 28, 2016
    Publication date: August 18, 2016
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N. Richards, Robert A. Jennings
  • Publication number: 20160215160
    Abstract: A composition comprising particulate solid, an organic medium and a dispersant comprising a polyacrylic copolymer functionalized with a polyether and reacted with an aminic polybasic species.
    Type: Application
    Filed: September 5, 2014
    Publication date: July 28, 2016
    Inventors: Elliot Coulbeck, John D. Schofield, Patrick J. Sunderland, Dean Thetford
  • Publication number: 20160200868
    Abstract: The present invention relates to a composition containing a particulate solid, a polar or non-polar organic medium, and a polymer chain having at least one non-fused aromatic imide pendant group. The invention further provides compositions for coatings, inks, toners, plastic materials (such as thermoplastics), plasticisers, plastisols, crude grinding and flush.
    Type: Application
    Filed: August 12, 2014
    Publication date: July 14, 2016
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Andrew J. Shooter, Dean Thetford
  • Patent number: 9174929
    Abstract: The present invention relates to a composition containing a particulate solid, a non-polar organic medium, and a compound obtained/obtainable by reacting an aromatic amine with hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl-substituted acylating agent is selected from the group consisting of an oligomer or polymer from condensation polymerization of a hydroxy-substituted C10-30 carboxylic acid into a polyester, an optionally hydroxy-substituted C10-30 carboxylic acid, a C10-30-hydrocarbyl substituted acylating agent, and a polyolefin-substituted maleic anhydride. The invention further provides compositions for inks, thermoplastics, plasticizers, plastisols, crude grinding and flush.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: November 3, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Dean Thetford, Matthew D. Gieselman, Joanne L. Jones
  • Patent number: 9115259
    Abstract: The invention relates to a composition containing a particulate solid, plastic material (such as polyvinyl chloride), and a dispersant/agent comprising an oligomer from polymerizing a C7-20 hydroxycarboxylic acid optionally with a C1-6 hydroxycarboxylic acid or its corresponding lactone form.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: August 25, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Dean Thetford, Patrick J. Sunderland, Eric L. Rohr, Jatin S. Panchal, Shelly A. Barnhart, John D. Schofield, Peter E. Bloyce
  • Patent number: 9044720
    Abstract: The invention relates to a composition containing a particulate solid, an organic medium, and a (meth)acrylic polymer. The invention further relates to novel compounds, and the use of the (meth)acrylic polymer as a dispersant, typically a pigment dispersant.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: June 2, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Patrick J. Sunderland, Dean Thetford, John D. Schofield
  • Publication number: 20150148476
    Abstract: The present invention relates to a composition containing a particulate solid, a polar or non-polar organic medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for coatings, inks, toners, plastic materials (such as thermoplastics), plasticisers, plastisols, crude grinding and flush.
    Type: Application
    Filed: April 25, 2013
    Publication date: May 28, 2015
    Inventors: Dean Thetford, Andrew J. Shooter, Stuart N. Richards
  • Patent number: 9034979
    Abstract: A composition comprising particulate solid (typically a pigment or filler), an organic medium (typically the organic medium may be a plastics material or an organic liquid) and a polyacrylic copolymer.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: May 19, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Patrick J. Sunderland, Dean Thetford, Elliot Coulbeck, Stuart N. Richards
  • Patent number: 9018288
    Abstract: The invention relates to a composition containing a particulate solid, a plastic material (such as a thermoplastic polymer) and a compound capable of having dispersant properties. The compound may be obtained/obtainable by reacting (i) a carboxylic acid or anhydride thereof with (ii) an amine or an aminoalcohol, to form a product, wherein the carboxylic acid contains a lipophilic group R containing six or more carbon atoms; and wherein the product formed is derived from a molar ratio of (i) to (ii) is either: (a) 1:1 or greater when (i) is a carboxylic acid anhydride, or (b) ratio of greater than 1:1 when (i) is a carboxylic acid. The invention further relates to novel compounds, and the use of the compound as a dispersant.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: April 28, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Patrick J. Sunderland, Dean Thetford
  • Patent number: 9018302
    Abstract: A composition comprising particulate solid (typically a pigment or filler), an organic medium (typically the organic medium may be a plastics material or an organic liquid) and a polyacrylic-acid-containing copolymer.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: April 28, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Dean Thetford, Elliot Coulbeck, Patrick J. Sunderland
  • Publication number: 20150112020
    Abstract: The present invention relates to a polymer, and a composition containing a particulate solid, an aqueous medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for millbases, dispersions, coatings and inks.
    Type: Application
    Filed: April 24, 2013
    Publication date: April 23, 2015
    Applicant: Lubrizol Advanced MAterials, Inc.
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N. Richards
  • Publication number: 20150072910
    Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) polyalkene-substituted amine having at least one tertiary amino group; and (b) a quaternizing agent suitable for converting the tertiary amino group to a quaternary nitrogen and the use of such quaternary ammonium salt detergents in a fuel composition to reduce intake valve deposits.
    Type: Application
    Filed: November 19, 2014
    Publication date: March 12, 2015
    Inventors: David J. Moreton, Paul R. Stevenson, Dean Thetford, Jonathan S. Vilardo
  • Patent number: 8877845
    Abstract: The invention relates to a composition containing a particulate solid, a plastic material and a compound obtained/obtainable by a process comprising (i) reacting at a temperature of 12O° C. or less, or 100° C. or less a hydroxycarboxylic acid and a lactone; and (ii) optionally reacting the product of (i) with a C1-50 carboxylic acid. The invention further relates to novel compounds, and the use of the compound as a dispersant in a plastic material.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: November 4, 2014
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventor: Dean Thetford
  • Patent number: 8859677
    Abstract: The present invention provides a dispersant of formula (1): T-V-(A)n, -U-Z-W, Formula (1) wherein, T is a polymerization terminating group; V is a direct bond or divalent linking group; A is the residue of one or more different hydroxy carboxylic acids or lactones thereof, U is a direct bond or a divalent linkage; Z is the residue of a polyamine or polyimine; W is the residue of an oxide or urea; m is from 2 to 2000; and x is from 1 up to the maximum number of available amino and/or imino groups in Z which do not carry the group T-V-(A)n, -U-.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: October 14, 2014
    Assignee: Lubrizol Limited
    Inventor: Dean Thetford