Patents by Inventor Cesar Garcia

Cesar Garcia 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: 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
  • Patent number: 8106127
    Abstract: An in-reactor polymer blend comprises (a) a propylene-containing first polymer; and (b) an ethylene-containing second polymer such that the polymer blend comprises between about 50 wt % and about 80 wt % units derived from ethylene and between about 50 wt % and about 20 wt % units derived from propylene. The blend is substantially free of dienes and the content of ethylene in the second polymer in the form of ethylene-ethylene-ethylene triads is at least 40%. The second polymer contains at least 0.1 branch having 8 or more carbon atoms per 10,000 carbons. In addition, the blend has a strain hardening index of at least 1.8, a shear thinning slope in the plot of log(dynamic viscosity) versus log(frequency) of less than ?0.2 and exhibits at least two peaks when subjected to Differential Scanning Calorimetry (first melt) corresponding to a first melting point of at least 150° C. and a second melting point of at least 40° C.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: January 31, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Carlos U. De Gracia, Kevin R. Squire, Peijun Jiang, Armenag H. Dekmezian, Beverly J. Poole, Cesar A. Garcia-Franco
  • Patent number: 8101685
    Abstract: This invention relates to an in-reactor polymer blend comprising: (a) a first ethylene-containing polymer having a density of greater than 0.90 g/cm3 and a Mw of more than 20,000 g/mol and (b) a second ethylene-containing polymer having a density of less than 0.90 g/cm3, wherein the polymer blend has a Tm of at least 90° C. (DSC second melt), a density of less than 0.92 g/cm3, and the densities of the first and second polymers differ by at least 1%. Specifically this invention relates to an in-reactor polymer blend comprising: (a) a first ethylene polymer comprising 90 to 100 wt % ethylene and from 0 to less than 10 wt % comonomer, said first ethylene polymer component having density of greater than 0.920 g/cm3, an Mw of 20,000 g/mol or more; and (b) a second ethylene polymer comprising from 70 to 90 wt % ethylene and 30 to 10 wt % comonomer, said second ethylene polymer having a density of 0.910 g/cm3 or less, wherein the polymer blend has: (a) a Tm of at least 100° C. over a density ranging from 0.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: January 24, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Peijun Jiang, Armenag H. Dekmezian, Kevin R. Squire, Cesar A. Garcia-Franco
  • Patent number: 8088704
    Abstract: Polymerization catalyst systems including three or more catalyst compounds are provided. Methods for olefin polymerization including the aforementioned catalyst systems are also provided.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: January 3, 2012
    Assignee: Univation Technologies, LLC
    Inventors: Rainer Kolb, Dongming Li, Francis C. Rix, Cesar A. Garcia-Franco
  • Publication number: 20110251123
    Abstract: The present invention relates to a liquid oral pharmaceutical composition of desmopressin, and its use for the treatment of central diabetes insipidus, primary nocturnal enuresis, bleeding in patients with Hemophilia A, with von Willebrand-Jürgens disease and postoperative bleeding.
    Type: Application
    Filed: August 1, 2008
    Publication date: October 13, 2011
    Inventors: Nuria Carbajal Navarro, Antonio Boix Montanes, Carlos Nieto Abad, Antonio Patente Duena, Ricard Mis Vicaino, Cesar Garcia Plumed
  • Patent number: 8022142
    Abstract: An in-reactor polymer blend including (a) a propylene-containing first polymer; and (b) propylene-containing second polymer having a different crystallinity from the first polymer. The polymer blend has a melting temperature, Tm, of at least 135° C., a melt flow rate of at least 70 dg/min, a tensile strength of at least 8 MPa, an elongation at break of at least 300%.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: September 20, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Peijun Jiang, Armenag H. Dekmezian, Kevin R. Squire, Carlos U. de Gracia, Keith Edward Jolibois, Cesar A. Garcia-Franco, Ronald Raymond Thackston
  • Patent number: 8017009
    Abstract: The present invention relates to a fuel filter having a filter element and connections for the fuel inlet and the fuel outlet. In order to permit a more compact design, the fuel filter employs flat, block-shaped filter element.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: September 13, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Julen Burgoa Arteche, Cesar Garcia Benitez, Enrique Casillas Torres, Julian De La Azuela, Candido Juara Ropero, Teresa Serrano Gil
  • Publication number: 20100261861
    Abstract: Polymerization catalyst systems including three or more catalyst compounds are provided. Methods for olefin polymerization including the aforementioned catalyst systems are also provided.
    Type: Application
    Filed: November 14, 2008
    Publication date: October 14, 2010
    Inventors: Rainer Kolb, Dongming Li, Francis C. Rix, Cesar A. Garcia-Franco
  • Publication number: 20100234547
    Abstract: Olefin polymerization catalyst systems including a high molecular weight catalyst compound and a low molecular weight catalyst compound, and methods of making same are provided. High molecular weight catalysts include metallocene catalysts and low molecular weight catalysts include non-metallocene compounds including biphenyl phenol compounds. Generally catalyst systems may include less than about 5.0 mol % of the high molecular weight catalyst compound relative to said low molecular weight catalyst. Methods for olefin polymerization including the aforementioned catalyst systems, and polyolefins and products made therefrom.
    Type: Application
    Filed: November 12, 2008
    Publication date: September 16, 2010
    Applicant: Univation Technologies, LLC
    Inventors: Rainer Kolb, Dongming Li, Cesar A. Garcia-Franco
  • 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: 20100160928
    Abstract: An apparatus for use in gynaecological operations includes a support and a mounting assembly for mounting the support to an operating table. A vertical member is supported in a vertical orientation by the support and a horizontal bar is supported in a substantially horizontal orientation by the vertical member. An annular vaginal plug is supported by and is axially movable along the horizontal bar. A plug locking assembly is provided for locking the vaginal plug in a selected axial position along the horizontal bar. A uterine driver may be introduced through the abdominal wall that has a handle and a uterus engagement tip with omni-directional movement in the released position. The engagement tip is connected to the uterine driver by a flexible member.
    Type: Application
    Filed: December 22, 2009
    Publication date: June 24, 2010
    Inventors: José Guillermo Rodriguez NAVAS, Edgar GARCIA, Erick Edgardo GARCIA, Daniel Alberto GARCIA, Julio Cesar GARCIA
  • Publication number: 20100152383
    Abstract: This invention relates to an in-reactor polymer blend comprising: (a) a first ethylene-containing polymer having a density of greater than 0.90 g/cm3 and a Mw of more than 20,000 g/mol and (b) a second ethylene-containing polymer having a density of less than 0.90 g/cm3, wherein the polymer blend has a Tm of at least 90° C. (DSC second melt), a density of less than 0.92 g/cm3, and the densities of the first and second polymers differ by at least 1%. Specifically this invention relates to an in-reactor polymer blend comprising: (a) a first ethylene polymer comprising 90 to 100 wt % ethylene and from 0 to less than 10 wt % comonomer, said first ethylene polymer component having density of greater than 0.920 g/cm3, an Mw of 20,000 g/mol or more; and (b) a second ethylene polymer comprising from 70 to 90 wt % ethylene and 30 to 10 wt % comonomer, said second ethylene polymer having a density of 0.910 g/cm3 or less, wherein the polymer blend has: (a) a Tm of at least 100° C. over a density ranging from 0.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 17, 2010
    Inventors: Peijun Jiang, Armenag H. Dekmezian, Kevin R. Squire, Cesar A. Garcia-Franco
  • Publication number: 20100152382
    Abstract: An in-or polymer blend including (a) a propylene-containing first polymer; and (b) propylene-containing second polymer having a different crystallinity from the first polymer. The polymer blend has a melting temperature, Tm, of at least 135° C., a melt flow rate of at least 70 dg/min, a tensile strength of at least 8 MPa, an elongation at break of at least 300%.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 17, 2010
    Inventors: Peijun Jiang, Armenag H. Dekmezian, Kevin R. Squire, Carlos U. De Gracia, Keith Edward Jolibois, Cesar A. Garcia-Franco, Ronald Raymond Thackston
  • Publication number: 20100152390
    Abstract: An in-reactor polymer blend comprises (a) a propylene-containing first polymer; and (b) an ethylene-containing second polymer such that the polymer blend comprises between about 50 wt % and about 80 wt % units derived from ethylene and between about 50 wt % and about 20 wt % units derived from propylene. The blend is substantially free of dienes and the content of ethylene in the second polymer in the form of ethylene-ethylene-ethylene triads is at least 40%. The second polymer contains at least 0.1 branch having 8 or more carbon atoms per 10,000 carbons. In addition, the blend has a strain hardening index of at least 1.8, a shear thinning slope in the plot of log(dynamic viscosity) versus log(frequency) of less than ?0.2 and exhibits at least two peaks when subjected to Differential Scanning Calorimetry (first melt) corresponding to a first melting point of at least 150° C. and a second melting point of at least 40° C.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 17, 2010
    Inventors: Carlos U. De Gracia, Kevin R. Squire, Peijun Jiang, Armenag H. Dekmezian, Beverly J. Poole, Cesar A. Garcia-Franco
  • Publication number: 20100152388
    Abstract: This invention relates to in-reactor polymer blends comprising at least 60 mole % of propylene and from 0.01 to 10 mole % of at least one diene selected from the group of C6 to C12 ?,?-diene, norbornadiene, vinyl norbornene and mixtures thereof with the balance being ethylene. The blend comprises first and second polymers having different crystallinities and or different Tg's.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 17, 2010
    Inventors: Peijun Jiang, Kevin R. Squire, Charles J. Ruff, Cesar A. Garcia-Franco
  • 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
  • Patent number: 7427506
    Abstract: A high throughput method to determine an amount of a comonomer in a copolymer sample of a copolymer system comprises the steps of providing a plurality of copolymer samples; creating an array of the copolymer samples; measuring a sample complex modulus of each of the copolymer samples at a comparison phase angle; and determining the amount of a comonomer in the copolymer sample by comparing the sample complex modulus to a calibration curve, wherein the calibration curve relates a concentration of the comonomer in the copolymer sample to a complex moduli of the copolymer sample determined at the comparison phase angle. A method of determining the amount of a comonomer in both a single copolymer sample, and in a high throughput scheme using the crossover modulus is also disclosed.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: September 23, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Cesar A. Garcia-Franco, David J. Lohse, Bruce A. Harrington, Robert Jay Wittenbrink
  • Publication number: 20080197064
    Abstract: Disclosed is a filter device having a filter element disposed in a filter housing and a heater for heating a medium flowing through the filter device. The heater is disposed in the interior of the filter housing and is mounted on the filter element.
    Type: Application
    Filed: February 4, 2008
    Publication date: August 21, 2008
    Inventors: Carlos J. BLASCO REMACHA, Cesar Garcia Benitez, Juan Luis Marquez Gavilan
  • Publication number: 20070293640
    Abstract: This invention relates to a polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, where the polymer has: a) a Dot T-Peel of 1 Newton or more; and b) a branching index (g?) of 0.95 or less measured at the Mz of the polymer; c) an Mw of 100,000 or less. This invention also relates a polymer comprising one or more C3 to C40 olefins where the polymer has: a) a Dot T-Peel of 1 Newton or more on Kraft paper; b) a branching index (g?) of 0.95 or less measured at the Mz of the polymer; c) a Mw of 10,000 to 100,000; and d) a heat of fusion of 1 to 70 J/g. This invention also relates a polymer comprising one or more C3 to C40 olefins where the polymer has: a) a Dot T-Peel of 1 Newton or more on Kraft paper; b) a branching index (g?) of 0.98 or less measured at the Mz of the polymer; c) a Mw of 10,000 to 60,000; d) a heat of fusion of 1 to 50 J/g.
    Type: Application
    Filed: August 2, 2007
    Publication date: December 20, 2007
    Inventors: Peijun Jiang, Armenag Dekmezian, Jo Ann Canich, Charles Sims, Ramin Abhari, Cesar Garcia-Franco, David Johnsrud
  • Publication number: 20070135583
    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: December 8, 2005
    Publication date: June 14, 2007
    Inventors: David Lohse, Cesar Garcia-Franco, Nikos Hadjichristidis