Patents by Inventor David P. Dworak

David P. Dworak 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: 20150136323
    Abstract: The invention provides anaerobic curable compositions comprising a (meth)acrylate component, at least a portion which comprises a (meth)acrylate-functionalized bio-renewable oleaginous polyurethane polymer, and methods of their production and use. These compositions provide excellent adhesion especially on oily surfaces.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 21, 2015
    Inventors: Andrew D. Messana, David P. Dworak, Angelica Messana, Anthony F. Jacobine, Darel Gustafson
  • Patent number: 9006362
    Abstract: Living radical polymerization processes, reaction products of such processes, and compositions containing such reaction products are provided. More particularly, a living radical polymerization of (meth)acrylic acid monomers employing having a defined order of introduction of the reactants and/or a specific set of reaction conditions, is provided.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: April 14, 2015
    Assignee: Henkel IP & Holding GmbH
    Inventors: Qinyan Zhu, David P. Dworak, John G. Woods, Anthony F. Jacobine
  • Patent number: 8883941
    Abstract: This invention provides methods for controlled single electron transfer living radical polymerization (SET-LRP) of monomers with increased conversion, high molecular weights and low polydispersity by allowing the polymerization to proceed at low temperatures via a tubular reactor either made of copper or containing copper metal surface.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: November 11, 2014
    Assignee: Henkel Corporation
    Inventors: Anthony F. Jacobine, John G. Woods, Scott Senuta, David P. Dworak, Debora E. Duch, John Mazzullo
  • Publication number: 20140275448
    Abstract: This invention provides methods for controlled single electron transfer living radical polymerization (SET-LRP) of monomers with increased conversion, high molecular weights and low polydispersity by allowing the polymerization to proceed at low temperatures via a tubular reactor either made of copper or containing copper metal surface.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 18, 2014
    Applicant: Henkel Corporation
    Inventors: Anthony F. Jacobine, John G. Woods, Scott Senuta, David P. Dworak, Debora E. Duch, John Mazzullo
  • Publication number: 20140221573
    Abstract: The present invention relates to multi-functional polymeric resin blends which have a defined average molecular weight distribution. Additionally each polymeric component of the blend has a polydispersity of from about 1.01 to about 2.50, The average functionality of the blend is from about 1.8 to about 4.0. More particularly, the present invention relates to poly(meth)acrylates having three or more functional groups. These highly functionalized resin blends are desirably prepared using controlled free radical polymerization techniques, such as single electron transfer living radical polymerization (SET-LRP) processes to produce a variety of blended resin systems which have tailored and enhanced properties.
    Type: Application
    Filed: September 18, 2012
    Publication date: August 7, 2014
    Inventors: Joel D. Schall, Eric Hernandez Edo, John G. Woods, David P. Dworak, Philip T. Klemaczyk, Alfred A. DeCato
  • Publication number: 20140107283
    Abstract: Living radical polymerization processes, reaction products of such processes, and compositions containing such reaction products are provided. More particularly, a living radical polymerization of (meth)acrylic acid monomers employing having a defined order of introduction of the reactants and/or a specific set of reaction conditions, is provided.
    Type: Application
    Filed: March 12, 2013
    Publication date: April 17, 2014
    Applicant: Henkel Corporation
    Inventors: Qinyan Zhu, David P. Dworak, John G. Woods, Anthony F. Jacobine
  • Patent number: 8653218
    Abstract: The present invention relates to novel amine terminated cycloaliphatic polysiloxanes, and preparations thereof. More particularly, the invention provides several reaction schemes for the synthesis of amino-functionalized cyclo-aliphatic silicones and the products produced by the reaction schemes. In one embodiment of the invention, an amine functionalized silicone is prepared through a base-catalyzed ring-opening reaction. In another embodiment of the invention, an amine functionalized silicone is prepared through the hydrosilation of a silicone oligomer through the blocking and deblocking of an amine terminated in a vinyl group.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: February 18, 2014
    Assignee: The University of Akron
    Inventors: Mark D. Soucek, David P. Dworak, Ruby Chakraborty
  • Patent number: 8362112
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants. The cure accelerators are constructed as urethane/urea/thiourethane (meth)acrylate resins from diols and include a unit embraced within structure A where X is C1-20 alkyl, C2-20 alkenyl, or C7-20 alkaryl, any of which may be interrupted by one or more hereto atoms, and which are functionalized by at least one and preferably at least two groups selected from —OH, —NH2 or —SH and z is 1-3.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: January 29, 2013
    Assignees: Henkel Ireland Limited, Henkel Corporation
    Inventors: David P. Birkett, Martin Wyer, Andrew Messana, David P. Dworak, Anthony F. Jacobine
  • Patent number: 8198389
    Abstract: The present invention is generally related to mold release compounds having improved cure times, environmental friendliness and durability that are formed from cycloaliphatic epoxide functionalized polydimethylsiloxane compounds In still another embodiment, the present invention relates to mold release compounds that are formed from cycloaliphatic epoxide functionalized poly(dimethylsiloxane-co-methylhydrosiloxane) compounds.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: June 12, 2012
    Assignee: The University of Akron
    Inventors: Mark D. Soucek, David P. Dworak
  • Publication number: 20120129994
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants. The cure accelerators are constructed as urethane/urea/thiourethane (meth)acrylate resins from diols and include a unit embraced within structure A where X is C1-20 alkyl, C2-20 alkenyl, or C7-20 alkaryl, any of which may be interrupted by one or more hereto atoms, and which are functionalized by at least one and preferably at least two groups selected from —OH, —NH2 or —SH and z is 1-3.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 24, 2012
    Applicants: Henkel Corporation, Loctite (R&D) Limited
    Inventors: David Birkett, Martin Wyer, Andrew Messana, David P. Dworak, Anthony F. Jacobine
  • Publication number: 20110275778
    Abstract: The present invention relates to novel amine terminated cycloaliphatic polysiloxanes, and preparations thereof. More particularly, the invention provides several reaction schemes for the synthesis of amino-functionalized cyclo-aliphatic silicones and the products produced by the reaction schemes. In one embodiment of the invention, an amine functionalized silicone is prepared through a base-catalyzed ring-opening reaction. In another embodiment of the invention, an amine functionalized silicone is prepared through the hydrosilation of a silicone oligomer through the blocking and deblocking of an amine terminated in a vinyl group.
    Type: Application
    Filed: July 24, 2008
    Publication date: November 10, 2011
    Applicant: THE UNIVERSITY OF AKRON
    Inventors: Mark D. Soucek, David P. Dworak, Ruby Chakraborty
  • Publication number: 20100280189
    Abstract: The present invention generally relates to compositions including linear cycloaliphatic siloxane polymers, and the cyclic cycloaliphatic siloxane oligomers from which they are made. The present invention also generally relates to methods for making cycloaliphatic siloxane polymers, and the cyclic cycloaliphatic siloxane oligomers from which they are made. Some embodiments relate to cationic polymerization of methyl, cyclopentyl, and/or cyclohexyl substituted polysiloxanes. In some embodiments the cationic polymerization is a cationic ring-opening polymerization.
    Type: Application
    Filed: November 30, 2006
    Publication date: November 4, 2010
    Applicant: THE UNIVERSITY OF AKRON
    Inventors: David P. Dworak, Mark D. Soucek
  • Patent number: 7625978
    Abstract: The present invention provides curable hot melt compositions including reactive polymers, which are reinforced by organic polymers to impart higher tensile strength and elongation to the compositions upon cure. In particular, the present invention provides curable hot melt compositions including a silicone urea based polymer and a reinforcement polymer. In some embodiments, the compositions cure upon exposure to moisture and/or radiation. The compositions may be used, for example, as sealants or adhesives.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: December 1, 2009
    Assignee: Henkel Corporation
    Inventors: Thomas Fay-Oy Lim, David P. Dworak, Mathias E. Liistro, Jr., Hsien-Kun Chu
  • Publication number: 20080306208
    Abstract: The present invention relates to a method of preparing fast curing silicone RTV compositions by reacting an amino endcapped silicone with an isocyanato functionalized silane, and to compositions formed thereby. In particular, the present invention provides compositions which include silicones endcapped with silanes which contain ?-ureas.
    Type: Application
    Filed: November 16, 2006
    Publication date: December 11, 2008
    Applicants: Henkel Corporation, Henkel KGaA
    Inventors: Thomas Fay-Oy Lim, Hsien-Kun Chu, Robert P. Cross, Mathias E. Liistro, JR., David P. Dworak, Paul Borucki, Scott Senuta, Daniela Bathelt, Thomas Bachon