Patents by Inventor Sandra O'Shea

Sandra O'Shea 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).

  • Wetting and dispersing agent, production method and use thereof
    Patent number: 9447292
    Abstract: The invention relates to a wetting and dispersing agent that can be produced by carrying out step (1): wherein a) an organic polymer containing primary and/or secondary amino groups and b) at least one branched polyhydroxymonocarboxylic acid comprising, in addition to a carboxyl group, at least two hydroxy groups, one of which is not bound to the main chain of the molecule, are reacted by condensation reactions, forming amide linkages; and step (2): wherein at least some of the hydroxy groups of the hydroxy-functional reaction product obtained in step (1) are reacted with at least one organic monoisocyanate, forming urethane linkages.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: September 20, 2016
    Assignee: BYK-Chemie GmbH
    Inventors: Jürgen Omeis, Wolfgang Pritschins, Frederik Piestert, Marcel Krohnen, Sandra O'Shea
  • Wetting agents and dispersants based on mixtures of structure copolymers
    Patent number: 8871856
    Abstract: The invention relates to compositions comprising two structured linear copolymers selected from the group consisting of block copolymers and gradient copolymers, these copolymers being prepared by different controlled polymerization techniques and the difference in the polydispersities of these copolymers, ?(Mw/Mn), being ?0.25. The invention further relates to the production of such blends and to their use as wetting agents and dispersants.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: October 28, 2014
    Assignee: BYK-Chemie GmbH
    Inventors: Bernd Göebelt, Jurgen Omeis, Sabine Johann, Sandra O'Shea
  • WETTING AND DISPERSING AGENT, PRODUCTION METHOD AND USE THEREOF
    Publication number: 20140012036
    Abstract: The invention relates to a wetting and dispersing agent that can be produced by carrying out step (1): wherein a) an organic polymer containing primary and/or secondary amino groups and h) at least one branched polyhydroxymonocarboxylic acid comprising, in addition to a carboxyl group, at least two hydroxy groups, one of which is not bound to the main chain of the molecule, are reacted by condensation reactions, forming amide linkages; and step (2): wherein at least some of the hydroxy groups of the hydroxy-functional reaction product obtained in step (1) are reacted with at least one organic monoisocyanate, forming urethane linkages.
    Type: Application
    Filed: January 25, 2012
    Publication date: January 9, 2014
    Inventors: Jurgen Omeis, Wolfgang Pritschins, Frederik Piestert, Marcel Krohnen, Sandra O'Shea
  • WETTING AGENTS AND DISPERSANTS BASED ON MIXTURES OF STRUCTURE COPOLYMERS
    Publication number: 20100168316
    Abstract: The invention relates to compositions comprising two structured linear copolymers selected from the group consisting of block copolymers and gradient copolymers, these copolymers being prepared by different controlled polymerization techniques and the difference in the polydispersities of these copolymers, ?(Mw/Mn), being ?0.25. The invention further relates to the production of such blends and to their use as wetting agents and dispersants.
    Type: Application
    Filed: October 9, 2007
    Publication date: July 1, 2010
    Applicant: BYK-Chemie GmbH
    Inventors: Bernd Gobelt, Jurgen Omeis, Sabine Johann, Sandra O'Shea