Patents by Inventor David J. Lohse

David J. Lohse 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: 10800865
    Abstract: Branched ethylene-propylene-diene elastomers (bEPDM) and processes for making the bEPDM's comprising combining a catalyst precursor and an activator at a temperature within a range from 90° C. to 160° C. with ethylene, a C3 to C12 ?-olefin, a non-conjugated diene, and a dual-polymerizable diene, where the catalyst precursor is a metallocene catalyst precursor, preferably according to one of various structures including any two ligands selected from cyclopentadienyl ligands and ligands isolobal to the cyclopentadienyl group.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: October 13, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Gabor Kiss, Jo Ann M. Canich, Guy J. Wouters, Robert P. Reynolds, Jr., Rainer Kolb, David J. Lohse, Florin Barsan
  • Publication number: 20180223022
    Abstract: Branched ethylene-propylene-diene elastomers (bEPDM) and processes for making the bEPDM's comprising combining a catalyst precursor and an activator at a temperature within a range from 90° C. to 160° C. with ethylene, a C3 to C12 ?-olefin, a non-conjugated diene, and a dual-polymerizable diene, where the catalyst precursor is a metallocene catalyst precursor, preferably according to one of various structures including any two ligands selected from cyclopentadienyl ligands and ligands isolobal to the cyclopentadienyl group.
    Type: Application
    Filed: August 17, 2016
    Publication date: August 9, 2018
    Inventors: Gabor Kiss, Jo Ann M. Canich, Guy J. Wouters, Robert P. Reynolds, Rainer Kolb, David J. Lohse, Florin Barsan
  • Patent number: 8598261
    Abstract: A process for producing a nanocomposite of a halogenated elastomer and an inorganic, exfoliated clay includes the in-situ protonation of a modifier, which may be an alkylamine, arylamine or an alkylarylamine. This process can be integrated with a polymer halogenation process. The nanocomposite so formed has improved air barrier properties and is suitable for use as a tire innerliner or innertube.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: December 3, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Weiqing Weng, James P. Stokes, Edmund J. Stachowski, III, Molly J. Upton, Robert N. Webb, Ramesh Varadaraj, Cornelius H. Brons, David J. Lohse
  • Patent number: 8481646
    Abstract: This invention relates to the preparation of thermoplastic vulcanizates (TPVs) with unique morphological features, more specifically, this invention relates to a method for preparing TPV compositions wherein the mixing of plastomers and elastomers are carried out in solvent with curatives to induce cross-linking.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: July 9, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Weiqing Weng, Sunny Jacob, Peijun Jiang, Armenag H. Dekmezian, Aspy K. Mehta, James R. Ayers, David J. Lohse, Peter W. Manders, Palanisamy Arjunan
  • Patent number: 8383731
    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: February 24, 2009
    Date of Patent: February 26, 2013
    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
  • Patent number: 8217112
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: July 10, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Bruce R. Lundmark, Bryan R. Chapman, Sandra Denise Schregenberger, David J. Lohse
  • Patent number: 8211968
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: July 3, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink
  • Patent number: 8168724
    Abstract: The present invention relates to a method to produce highly branched polymers with a polyolefin backbone structure of ethylene and precise control of the nature of the branching. In particular, the distribution of branch length and number of branches can be more precisely controlled via the polymerization method of the present invention. The method comprises using anionic chemistry to make unsaturated polydienes with a well-defined, highly-branched structure, and then hydrogenating these polydienes to form highly branched or dendritic saturated hydrocarbon polymers. Highly branched or dendritic polyethylene, ethylene-propylene copolymer and atactic polypropylene are among the saturated hydrocarbon polymers that can be anionically synthesized via the proper selection of diene monomer type, coupling agent, and hydrogenation conditions.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: May 1, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: David J. Lohse, César Garcia-Franco, Nikos Hadjichristidis
  • Publication number: 20120045600
    Abstract: This invention relates to the preparation of thermoplastic vulcanizates (TPVs) with unique morphological features, more specifically, this invention relates to a method for preparing TPV compositions wherein the mixing of plastomers and elastomers are carried out in solvent with curatives to induce cross-linking.
    Type: Application
    Filed: February 23, 2011
    Publication date: February 23, 2012
    Inventors: Weiqing Weng, Sunny Jacob, Peijun Jiang, Armenag H. Dekmezian, Aspy K. Mehta, James R. Ayers, David J. Lohse, Peter W. Manders, Palanisamy Arjunan
  • Publication number: 20110250372
    Abstract: A process for producing a nanocomposite of a halogenated elastomer and an inorganic, exfoliated clay includes the in-situ protonation of a modifier, which may be an alkylamine, arylamine or an alkylarylamine. This process can be integrated with a polymer halogenation process. The nanocomposite so formed has improved air barrier properties and is suitable for use as a tire innerliner or innertube.
    Type: Application
    Filed: October 14, 2008
    Publication date: October 13, 2011
    Inventors: Weiqing Weng, James P. Stokes, Edmund J. Stachowski III, Molly W. Upton, Robert N. Webb, Ramesh Varadaraj, Cornelius H. Brons, David J. Lohse
  • Patent number: 8013054
    Abstract: Elastomeric compositions comprising at least one C4 to C7 monoolefin elastomer, at least one polyalphaolefin, and optionally at least one hydrocarbon polymer additive are disclosed. The PAO comprises oligomers of one or more C2 to C20 alpha-olefins having a kinematic viscosity at 100° C. of 3 to 3000 cSt and a Mw/Mn of less than 4. In one aspect, the elastomeric composition may have improved flex fatigue properties and have a fatigue life of 450,000 Kc or more as measured by ASTM D 412 die C. In another aspect, an elastomeric composition may have improved impermeability and have a permeation coefficient at 40° C. of 160 cc*mm/(m2?day) or less.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: September 6, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Brendan Rodgers, David J. Lohse, Scott C. Solis, Rick D. Davis, Jung Hun Lee
  • Patent number: 7915345
    Abstract: This invention relates to the preparation of thermoplastic vulcanizates (TPVs) with unique morphological features, more specifically, this invention relates to a method for preparing TPV compositions wherein the mixing of plastomers and elastomers are carried out in solvent with curatives to induce cross-linking.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: March 29, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Weiqing Weng, Sunny Jacob, Peijun Jiang, Armenag H. Dekmezian, Aspy K. Mehta, James R. Ayers, David J. Lohse, Peter W. Manders, Palanisamy Arjunan
  • Patent number: 7875670
    Abstract: The present invention relates to articles made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: January 25, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Chon-Yie Lin, Wen Li, Bryan R. Chapman, Michael B. Kelly, Bruce R. Lundmark, David J. Lohse, Henry W. Yang, Sandra Denise Schregenberger
  • Patent number: 7795366
    Abstract: The present invention relates to a composition comprising more than 25 weight % (based on the weight of the composition) of one or more ethylene polymers having an Mw of 20,000 g/mole or more and at least 0.1 weight % of a liquid hydrocarbon modifier where the modifier has: 1) a viscosity index of 120 or more, and 2) an kinematic viscosity of 3 to 3000 cSt at 100° C., and 3) a pour point of ?10° C. or less, and 4) a flash point of 200° C. or more; and wherein the modifier contains less than 5 weight % of functional groups selected from hydroxide, aryls, substituted aryls, halogens, alkoxys, carboxylates, esters, acrylates, oxygen, nitrogen, and carboxyl, based upon the weight of the modifier.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: September 14, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Henry W. Yang, Bryan R. Chapman, David J. Lohse, Bruce R. Lundmark, Anthony Poloso, Sandra D. Schregenberger, Manika Varma-Nair, Wen Li
  • Publication number: 20100227977
    Abstract: The present invention relates to a method to produce highly branched polymers with a polyolefin backbone structure of ethylene and precise control of the nature of the branching. In particular, the distribution of branch length and number of branches can be more precisely controlled via the polymerization method of the present invention. The method comprises using anionic chemistry to make unsaturated polydienes with a well-defined, highly-branched structure, and then hydrogenating these polydienes to form highly branched or dendritic saturated hydrocarbon polymers. Highly branched or dendritic polyethylene, ethylene-propylene copolymer and atactic polypropylene are among the saturated hydrocarbon polymers that can be anionically synthesized via the proper selection of diene monomer type, coupling agent, and hydrogenation conditions.
    Type: Application
    Filed: February 5, 2010
    Publication date: September 9, 2010
    Inventors: David J. Lohse, César Garcia-Franco, Nikos Hadjichristidis
  • Publication number: 20100152346
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Application
    Filed: January 25, 2010
    Publication date: June 17, 2010
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink
  • Patent number: 7687580
    Abstract: The present invention relates to a method to produce highly branched polymers with a polyolefin backbone structure of ethylene and precise control of the nature of the branching. In particular, the distribution of branch length and number of branches can be more precisely controlled via the polymerization method of the present invention. The method comprises using anionic chemistry to make unsaturated polydienes with a well-defined, highly-branched structure, and then hydrogenating these polydienes to form highly branched or dendritic saturated hydrocarbon polymers. Highly branched or dendritic polyethylene, ethylene-propylene copolymer and atactic polypropylene are among the saturated hydrocarbon polymers that can be anionically synthesized via the proper selection of diene monomer type, coupling agent, and hydrogenation conditions.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: March 30, 2010
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: David J. Lohse, César Garcia-Franco, Nikos Hadjichristidis
  • Publication number: 20100036038
    Abstract: Elastomeric compositions comprising at least one C4 to C7 monoolefin elastomer, at least one polyalphaolefin, and optionally at least one hydrocarbon polymer additive are disclosed. The PAO comprises oligomers of one or more C2 to C20 alpha-olefins having a kinematic viscosity at 100° C. of 3 to 3000 cSt and a Mw/Mn of less than 4. In one aspect, the elastomeric composition may have improved flex fatigue properties and have a fatigue life of 450,000 Kc or more as measured by ASTM D 412 die C. In another aspect, an elastomeric composition may have improved impermeability and have a permeation coefficient at 40° C. of 160 cc*mm/(m2?day) or less.
    Type: Application
    Filed: June 26, 2009
    Publication date: February 11, 2010
    Inventors: Michael Brendan Rodgers, David J. Lohse, Scott C. Solis, Rick D. Davis, Jung Hun Lee
  • Publication number: 20100035498
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Application
    Filed: October 19, 2009
    Publication date: February 11, 2010
    Inventors: Bruce R. Lundmark, Bryan R. Chapman, David J. Lohse, Sandra Denise Schregenberger
  • Patent number: 7652093
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: January 26, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink