Patents by Inventor Kenneth Lewtas

Kenneth Lewtas 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: 7765855
    Abstract: Adhesive compositions and a method for selecting adhesive compositions are disclosed herein. Preferred adhesives generally have small domains and/or a homogeneous domain distribution. The method of selecting adhesives is based on size and distribution of the domains.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: August 3, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Kenneth Lewtas, Antonie Jan Bons, Johan Stuyver
  • Patent number: 7700707
    Abstract: Embodiments of the present invention relate to article comprising 1) a functionalized component, 2) tackifier, and 3) an olefin polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 5 mole % of ethylene having a Dot T-Peel of 1 Newton or more, a branching index (g?) of 0.95 or less measured at the Mz of the polymer; and an Mw of 100,000 or less; where the functional component is selected from the group consisting of functionalized polymers, functionalized oligomers and beta nucleating agents; and where the Gardner color of the adhesive does not change by more than 7 Gardner units when the adhesive has been heat aged at 180° C. for 48 hours as compared to the Gardner color of the unaged composition.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: April 20, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Ramin Abhari, Charles Lewis Sims, Kenneth Lewtas, Mun Fu Tse, Patrick Brant, Peijun Jiang, Wai Yan Chow, Jean-Roch Schauder, Caiguo Gong, David Raymond Johnsrud, Jo Ann Marie Canich
  • Publication number: 20100076128
    Abstract: Embodiments of the present invention relate to article comprising 1) a functionalized component, 2) tackifier, and 3) an olefin polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 5 mole % of ethylene having a Dot T-Peel of 1 Newton or more, a branching index (g?) of 0.95 or less measured at the Mz of the polymer; and an Mw of 100,000 or less; where the functional component is selected from the group consisting of functionalized polymers, functionalized oligomers and beta nucleating agents; and where the Gardner color of the adhesive does not change by more than 7 Gardner units when the adhesive has been heat aged at 180° C. for 48 hours as compared to the Gardner color of the unaged composition.
    Type: Application
    Filed: November 24, 2009
    Publication date: March 25, 2010
    Inventors: Ramin Abhari, Charles Lewis Sims, Kenneth Lewtas, Mun Fu Tse, Patrick Brant, Peijun Jiang, Wai Yan Chow, Jean-Roch Schauder, Caiguo Gong, David Raymond Johnsrud, Jo Ann Marie Canich
  • Patent number: 7659337
    Abstract: A composition suitable for an air barrier such as an automotive tire innertube, innerliner, and aircraft tire innertube or innerliner, curing bladders, and other pneumatic devices is disclosed. The composition comprises an elastomer, a processing oil, and a grafted resin component.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: February 9, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Glenn Edward Jones, Mun Fu Tse, Hsien-Chang Wang, Kenneth Lewtas, William Moa-Tseng Chien, Walter Harvey Waddell
  • Publication number: 20090156729
    Abstract: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 ?-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238(B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRs) equal to and above 250 dg/min. at 230 NC. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.
    Type: Application
    Filed: February 24, 2009
    Publication date: June 18, 2009
    Inventors: Anthony G. Karandinos, Keith A. Nelson, Jean M. Tancrede, Kenneth Lewtas, Sudhin Datta, Charles Cozewith, Bruce A. Harrington, David J. Lohse, Olivier J.F. Georjon
  • Patent number: 7521507
    Abstract: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 ?-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238(B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRs) equal to and above 250 dg/min. at 230° C. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: April 21, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Kenneth Lewtas, Sudhin Datta, Charles Cozewith, Bruce A. Harrington, David J. Lohse, Olivier J. F. Georjon, Anthony G. Karandinos, Keith A. Nelson, Jean M. Tancrede
  • Publication number: 20090076212
    Abstract: A process for preparing a functionalized polymer composition and a functionalized polymer composition. The process comprises the steps of providing a hydrocarbon resin, a polyolefin and a graft monomer, and dispersing the hydrocarbon resin in the polyolefin, followed by adding the graft monomer under shear to prepare the functionalized polymer composition. The polyolefin can comprise a polyethylene polymer or a C3 to C40 polymer having a molecular weight (Mw) of at least 20000.
    Type: Application
    Filed: September 4, 2008
    Publication date: March 19, 2009
    Inventors: Kenneth Lewtas, Jean-Roch Schauder, Stijn Van Lierde, Jurgen Schroeyers
  • Patent number: 7495048
    Abstract: Ethylene unsaturated ester copolymers combined with a resin are disclosed for use in the sealing layers of laminates and films.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: February 24, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Linda Maria Gisele Roberta Van den Bossche, Kenneth Lewtas, Quoc Luvinh
  • Patent number: 7323239
    Abstract: Multilayer protective films that adhere well to many different surfaces and can be removed without leaving residues are provided. The films consist of a polyolefin backing layer(s) and an adhering layer consisting of an ethylene unsaturated ester copolymer layer containing a resin. The films have good tensile strength and stiffness at minimum thickness and can be produced by blown film and cast processes, mono and co-extrusion. The films are particularly useful for protecting automobiles during transportation and storage, a masterbatch of the resin in an ethylene polymer or copolymer to facilitate co-extrusion of the multilayer films is also provided.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: January 29, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Hugo Vanderstappen, Linda Maria Gisele Roberta Van Den Bossche, Kenneth Lewtas
  • Publication number: 20080021149
    Abstract: A composition suitable for an air barrier such as an automotive tire innertube, innerliner, and aircraft tire innertube or innerliner, curing bladders, and other pneumatic devices is disclosed. The composition comprises an elastomer, a processing oil, and a grafted resin component.
    Type: Application
    Filed: October 1, 2007
    Publication date: January 24, 2008
    Inventors: Glenn Jones, Mun Tse, Hsien-Chang Wang, Kenneth Lewtas, William Chien, Walter Waddell
  • Patent number: 7314901
    Abstract: Films disclosed herein contain a base or core layer comprising a first polypropylene, a second polypropylene, and a hydrocarbon resin. The base layers may also include other additives as described below. The first polypropylene is preferably a high crystallinity polypropylene having a melting point above about 155° C. or a polypropylene having a polydispersity (Mw/Mn) greater than about 4.0. The second polypropylene may be any conventional polypropylene, preferably having a melting point below about 160° C. and/or a polydispersity less than about 5.0.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: January 1, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jeffrey Wen-Cheng Kuo, Kenneth Lewtas, William Moa-Tseng Chien
  • Patent number: 7294664
    Abstract: A composition suitable for an air barrier such as an automotive tire innertube, innerliner, and aircraft tire innertube or innerliner, curing bladders, and other pneumatic devices is disclosed. The composition comprises an elastomer, a processing oil, and a grafted resin component.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: November 13, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Glenn Edward Jones, Mun Fu Tse, Hsien-Chang Wang, Kenneth Lewtas, William Moa-Tseng Chien, Walter Harvey Waddell
  • Patent number: 7288590
    Abstract: Improved adhesives are provided through the use of styrenic tetrablock or pentablock copolymers which have a reduced elastomeric behavior under the die-cutting conditions used in label production.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: October 30, 2007
    Assignees: Exxon Chemical Patents, Inc., The Dow Chemical Company
    Inventors: Jacques S. Lechat, Kenneth Lewtas, Roger R. Delme, Oliver J. Georjon, Francois-Xavier Gibert, Gerard Marin, Michael O. Myers
  • Patent number: 7276557
    Abstract: Resins and oligomer materials and/or combinations thereof grafted with an unsaturated acid or anhydride, such as maleic anhydride, are disclosed herein. The grafted materials are useful in adhesive formulations, particularly in hot melt adhesive applications.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: October 2, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Anne Vera Macedo, Kenneth Lewtas, John Richard Shutt
  • Publication number: 20070218308
    Abstract: Polymeric surfaces that contain a resin modifier and are surface treated, preferably by corona, flame, gas plasma treatment techniques, exhibit increased surface tension and retention of surface tension over extended periods of time.
    Type: Application
    Filed: June 30, 2005
    Publication date: September 20, 2007
    Inventors: Kenneth Lewtas, Linda Van Den Bossche, Anne Macedo, Jurgen Schroeyers, Nancy Vanderheyden
  • Patent number: 7210339
    Abstract: Adhesive compositions and a method for selecting adhesive compositions are disclosed herein. Preferred adhesives generally have small domains and/or a homogeneous domain distribution. The method of selecting adhesives is based on size and distribution of the domains.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: May 1, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Kenneth Lewtas, Antonie Jan Bons, Johan Stuyver
  • Publication number: 20070068233
    Abstract: Adhesive compositions and a method for selecting adhesive compositions are disclosed herein. Preferred adhesives generally have small domains and/or a homogeneous domain distribution. The method of selecting adhesives is based on size and distribution of the domains.
    Type: Application
    Filed: November 7, 2006
    Publication date: March 29, 2007
    Inventors: Kenneth Lewtas, Antonie Bons, Johan Stuyver
  • Publication number: 20060263620
    Abstract: Multilayer protective films that adhere well to many different surfaces and can be removed without leaving residues are provided. The films consist of a polyolefin backing layer(s) and an adhering layer consisting of an ethylene unsaturated ester copolymer layer containing a resin. The films have good tensile strength and stiffness at minimum thickness and can be produced by blown film and cast processes, mono and co-extrusion. The films are particularly useful for protecting automobiles during transportation and storage, a masterbatch of the resin in an ethylene polymer or copolymer to facilitate co-extrusion of the multilayer films is also provided.
    Type: Application
    Filed: October 22, 2002
    Publication date: November 23, 2006
    Inventors: Hugo Vanderstappen, Linda Maria Van Den Bossche, Kenneth Lewtas
  • Patent number: 7067603
    Abstract: The invention relates to novel adhesive alpha-olefin inter-polymers which are largely amorphous and have a rheological behavior that makes them suitable for adhesive use, both without and with minimzed amounts of tackifying resins. Specifically, the invention poly-alpha olefin inter-polymer may be composed of A) from 60 to 94% of units derived from one alpha mono-olefin having from 3 to 6 carbon atoms and B) from 6 to 40 mol % of units derived from one or more other mono-olefins having from 4 to 10 carbon atoms and at least one carbon atom more than A); and C) optionally from 0 to 10 mol % of units derived from another copolymerizable unsaturated hydrocarbon, different from A) and B); the diad distribution of component A in the polymer as determined by 13C NMR as described herein showing a ratio of experimentally determined diad distribution over the calculated Bernoullian diad distribution of less than 1.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: June 27, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Anthony G. Karandinos, David J. Lohse, Olivier J. F. Georjon, Kenneth Lewtas, Keith A. Nelson, Jean M. Tancrede, Bruce Allan Harrington
  • Publication number: 20050197442
    Abstract: A composition suitable for an air barrier such as an automotive tire innertube, innerliner, and aircraft tire innertube or innerliner, curing bladders, and other pneumatic devices is disclosed. The composition comprises an elastomer, a processing oil, and a grafted resin component.
    Type: Application
    Filed: October 21, 2003
    Publication date: September 8, 2005
    Inventors: Glenn Jones, Mun Tse, Hsien-Chang Wang, Kenneth Lewtas, William Chien, Walter Waddell