Patents by Inventor Teresa P. Karjala

Teresa P. Karjala 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: 9765160
    Abstract: The invention provides an ethylene-based polymer comprising the following properties: a) weight fraction (w) of molecular weight above 5*106 g/mol, w>A?B*I2, where A=0.4 wt %, and B is 0.02 wt %/(dg/min), and w<C?B*I2%, where C=0.9 wt %; and b) G?>D?E*log(I2), where D=162 Pa and E=52 Pa/log(dg/min).
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: September 19, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Cornelis F. J. Den Doelder, Otto J. Berbee, Stefan Hinrichs, Teresa P. Karjala
  • Patent number: 9752021
    Abstract: The instant invention provides an ethylene/alpha-olefin interpolymer composition suitable for blown film applications, and blown films made therefrom. The ethylene/alpha-olefin interpolymer composition suitable for blown film applications according to the present invention comprises greater than 80 percent by weight of units derived from ethylene and 20 percent or less by weight of units derived from one or more alpha olefin co-monomers, wherein said ethylene/alpha-olefin interpolymer has a density in the range of from 0.910 to 0.918 g/cm3, a melt index I2 in the range of from 0.5 to 1.1 g/10 minutes, a melt flow ratio I10/I2 in the range of from 8 to 10, a melt strength in the range of from 3 to 6 cN, a highest temperature fraction in the range of from 11 to 14 percent determined by CEF, a highest peak temperature fraction by CEF in range of from 96 to 100° C.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 5, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Mehmet Demirors, Teresa P. Karjala, Julie W. Mckenna, Douglas S. Ginger
  • Publication number: 20170210890
    Abstract: A polyethylene blend composition suitable for film applications comprising from 10 to 100 percent by weight of an ethylene-based polymer made by the process of: selecting an ethylene/?-olefin interpolymer (LLDPE) having a Comonomer Distribution Constant (CDC) in the range of from 75 to 300, a vinyl unsaturation of less than 150 vinyls per one million carbon atoms of the ethylene/?-olefin interpolymer; a zero shear viscosity ratio (ZSVR) in the range from 4 to 50; a density in the range of from 0.925 to 0.950 g/cm3, a melt index (I2) in a range of from 0.1 to 2.5 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 1.8 to 4.0; reacting said ethylene/?-olefin interpolymer with an alkoxy amine derivative in an amount equal to or less than 900 parts derivative per million parts by weight of total ethylene/?-olefin interpolymer under conditions sufficient to increase the melt strength of the ethylene/?-olefin interpolymer is provided.
    Type: Application
    Filed: July 14, 2015
    Publication date: July 27, 2017
    Inventors: Teresa P. Karjala, Jorge Caminero Gomes
  • Patent number: 9714326
    Abstract: A process for increasing the melt strength of a polyethylene resin comprising a) selecting a polyethylene resin having i) a density, as determined according to ASTM D792, in the range of from 0.865 g/cm3 to 0.97 g/cm3, and ii) a melt index, I2, as determined according to ASTM D1238 (2.16 kg, 190° C.), in the range of from 0.01 g/10 min to 100 g/10 min; b) reacting from 10 ppm to 1000 ppm of at least one peroxide having a 1 hour half-life decomposition temperature from 160° C. to 250° C. with the polyethylene resin under conditions sufficient to increase the melt strength of the polyethylene resin is provided. Also provided are a masterbatch composition and a polymeric composition.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: July 25, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Mehmet Demirors, Sean W. Ewart, Teresa P. Karjala, Maria Pollard
  • Patent number: 9683058
    Abstract: The invention provides an ethylene-based polymer comprising the following properties: a) a melt index (I2)?2.0 dg/min; b) a Mw(abs) versus I2 relationship: Mw(abs)<A+B(I2), where A=2.40×105 g/mole, and B=?8.00×103 (g/mole)/(dg/min); and c) a G? versus I2 relationship: G??C+D(I2), where C=127.5 Pa, and D=?1.25 Pa/(dg/min). The invention also provides an ethylene-based polymer comprising the following properties: a) a melt index (I2)?2.0 dg/min; b) a G? versus I2 relationship: G??C+D(I2), where C=127.5 Pa, and D=?1.25 Pa/(dg/min) c) a chloroform extractable (Clext) versus G? relationship: Clext.?E+FG?, where E=0.20 wt %, and F=0.060 wt %/Pa; and d) a “weight fraction (w) of molecular weight greater than 106 g/mole, based on the total weight of polymer, and as determined by GPC(abs),” that meets the following relationship: w<I+J(I2), where I=0.080, and J=?4.00×10?3 min/dg.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: June 20, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Otto J. Berbee, Cornelis F. J. Den Doelder, Stefan Hinrichs, Teresa P. Karjala
  • Publication number: 20170114163
    Abstract: The invention provides a high pressure, free-radical polymerization process for polymerizing an ethylene-based polymer, said process comprising polymerizing ethylene, in a reactor configuration comprising a reactor with at least two reaction zones, a first reaction zone and a reaction zone located downstream from the first reaction zone; and wherein CO (carbon monoxide) is added to the reactor in at least one reaction zone located downstream from the first reaction zone, and wherein, less than, or equal to, 95 weight percent of the total amount of CO, is fed to the first reaction zone.
    Type: Application
    Filed: June 24, 2015
    Publication date: April 27, 2017
    Inventors: Otto J. Berbee, Teresa P. Karjala, Stefan Hinrichs, James L. Cooper
  • Publication number: 20170107315
    Abstract: The invention provides a composition comprising an ethylene-based polymer, comprising at least the following: A) a unit derived from Carbon Monoxide (CO); and B) a unit derived from at least one Rheology Modifying Agent (RMA) selected from the following RMA1, RMA2, RMA3, RMA4, RMA5, each as described herein, or a combination thereof.
    Type: Application
    Filed: June 24, 2015
    Publication date: April 20, 2017
    Inventors: John O. OSBY, Teresa P. KARJALA, Otto J. BERBEE, James L. COOPER
  • Publication number: 20170073439
    Abstract: An ethylene-based polymer, e.g., LDPE, with a low dissipation factor is made by a process comprising the step of contacting at polymerization conditions ethylene and, optionally, one or more comonomers, e.g., an alpha-olefin, with at least one carbon-carbon (C—C) hydrocarbyl, free-radical initiator of Structure 1: wherein R1, R2, R3, R4, R5 and R6, are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure, with the provisos that at least one of R2 and R5, and at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms, e.g., an alkaryl of at least seven carbon atoms.
    Type: Application
    Filed: May 8, 2015
    Publication date: March 16, 2017
    Inventors: Sean W. Ewart, Teresa P. Karjala, Mehmet Demirors, Christopher R. Eddy
  • Publication number: 20170008985
    Abstract: A polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via solution polymerization; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I2, measured according to ASTM D 1238 (2.16 kg @190° C.), of from 0.9 to 5 g/10 min; density (measured according to ASTM D792) from 0.910 to 0.935 g/cc; a melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg @ 190° C.), of from 6 to 7.4; and molecular weight distribution (Mw/Mn) of from 2.5 to 3.5 is provided.
    Type: Application
    Filed: February 9, 2015
    Publication date: January 12, 2017
    Inventors: Mehmet Demirors, Teresa P. Karjala, Carlos G. Alfonzo, Nilesh R. Savargaonkar, Rajen M. Patel, Sylvie Desjardins
  • Patent number: 9523015
    Abstract: The invention provides a composition comprising an ethylene-based polymer, formed from a high pressure, free-radical polymerization, and wherein the ethylene-based polymer has the following properties: a) a CO content from “greater than 0” to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer; and b) a melt index (I2) from 3 to 30 g/10 min.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: December 20, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, James L. Cooper, Jose Ortega, Lori L. Kardos
  • Publication number: 20160326283
    Abstract: An ethylene/?-olefin copolymer comprising units derived from ethylene; and units derived from at least one ?-olefin; wherein the ethylene/?-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/?-olefin copolymer is provided. Also provided is a process for producing an ethylene/?-olefin copolymer comprising: (1) polymerizing ethylene and one or more ?-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/?-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.
    Type: Application
    Filed: July 21, 2016
    Publication date: November 10, 2016
    Inventors: Lawrence J. Effler, Teresa P. Karjala, Mehmet Demirors, Nilesh R. Savargaonkar, Selim Bensason, Zhe Zhou
  • Publication number: 20160319053
    Abstract: The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus I2 relationship: Mw(abs)<A×[(I2)B], where A=5.00×102 (g/mole)/(dg/min)B, and B=?0.40; and b) a MS versus I2 relationship: MS?C×[(I2)D], where C=13.5 cN/(dg/min)D, and D=?0.55.
    Type: Application
    Filed: July 13, 2016
    Publication date: November 3, 2016
    Inventors: Otto J. Berbee, Cornelis F.J. Den Doelder, Teresa P. Karjala, Karl Zuercher, Jian Wang, Stefan Hinrichs
  • Publication number: 20160304638
    Abstract: The invention provides an ethylene-based polymer comprising the following properties: a) weight fraction (w) of molecular weight above 5*106 g/mol, w>A?B*I2, where A=0.4 wt %, and B is 0.02 wt %/(dg/min), and w<C?B*I2%, where C=0.9 wt %; and b) G?>D?E*log(I2), where D=162 Pa and E=52 Pa/log(dg/min).
    Type: Application
    Filed: November 20, 2014
    Publication date: October 20, 2016
    Inventors: Cornelis F.J. Den Doelder, Otto J. Berbee, Stefan Hinrichs, Teresa P. Karjala
  • Publication number: 20160297898
    Abstract: The invention provides a process to prepare a second propylene-based polymer from a first propylene-based polymer, each propylene-based polymer having a melt flow rate (MFR; 2.16 kg/230° C.) with the MFR of the second propylene-based polymer N greater than the MFR of the first propylene-based polymer, the process comprising the step of contacting under visbreaking conditions the first propylene-based polymer with at least one carbon-carbon (C—C) free-radical initiator of Structure (I): (Structure (I)) wherein R1, R2, R3, R4, R5 and R6 are each, independently, a hydrocarbyl group or a substituted hydrocarbyl group, and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure.
    Type: Application
    Filed: December 17, 2014
    Publication date: October 13, 2016
    Inventors: Teresa P. KARJALA, Sean W. EWART, Mehmet DEMIRORS, Michael w. TILSTON
  • Patent number: 9428595
    Abstract: The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene in the presence of at least one free-radical agent, and in the presence of a “metal alkyl-containing compound” selected from the group consisting of the following: i) at least one “Group II metal alkyl-containing compound,” ii) at least one “Group III metal alkyl-containing compound,” or iii) a combination of i) and ii). The invention also provides a composition comprising at least one ethylene-based polymer, prepared from a free-radical polymerization, and wherein the ethylene-based polymer has the following property: y>0.28567x?0.00032, wherein y=vinyl/1000C, as determined by 1H NMR, and x=mol % polymerized ?-olefin, as determined by 13C NMR.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: August 30, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Sean W. Ewart, Teresa P. Karjala, Sarat Munjal, Mehmet Demirors
  • Patent number: 9428636
    Abstract: An ethylene/?-olefin copolymer comprising units derived from ethylene; and units derived from at least one ?-olefin; wherein the ethylene/?-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/?-olefin copolymer is provided. Also provided is a process for producing an ethylene/?-olefin copolymer comprising: (1) polymerizing ethylene and one or more ?-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/?-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: August 30, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Lawrence J. Effler, Teresa P. Karjala, Mehmet Demirors, Nilesh R. Savargaonkar, Selim Bensason, Zhe Zhou
  • Patent number: 9422425
    Abstract: The present invention is a method for producing a film particularly well suited for shrink film applications, said method comprising the steps of selecting a target polyethylene resin and then increasing the melt strength of the polyethylene resin by reacting the polyethylene resin with an alkoxy amine derivative, and then forming a film from the reacted target polyethylene.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: August 23, 2016
    Assignees: Dow global Technologies LLC, Dow Brasil S.A.
    Inventors: Teresa P. Karjala, Nicolas Cardoso Mazzola, Mehmet Demirors, Jorge Caminero Gomes, Michael A. Terrasa
  • Publication number: 20160237222
    Abstract: A process for increasing the melt strength of a polyethylene resin comprising a) selecting a polyethylene resin having i) a density, as determined according to ASTM D792, in the range of from 0.865 g/cm3 to 0.97 g/cm3, and ii) a melt index, I2, as determined according to ASTM D1238 (2.16 kg, 190° C.), in the range of from 0.01 g/10 min to 100 g/10 min; b) reacting from 10 ppm to 1000 ppm of at least one peroxide having a 1 hour half-life decomposition temperature from 160° C. to 250° C. with the polyethylene resin under conditions sufficient to increase the melt strength of the polyethylene resin is provided. Also provided are a masterbatch composition and a polymeric composition.
    Type: Application
    Filed: September 18, 2014
    Publication date: August 18, 2016
    Inventors: Mehmet Demirors, Sean W. Ewart, Teresa P. Karjala, Maria Pollard
  • Patent number: 9394389
    Abstract: The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus I2 relationship: Mw(abs)<A×[(I2)B], where A=5.00×102 (kg/mole)/(dg/min)B, and B=?0.40; and b) a MS versus I2 relationship: MS?C×[(I2)D], where C=13.5 cN/(dg/min)D, and D=?0.55.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: July 19, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Otto J. Berbee, Cornelis F. J. den Doelder, Teresa P. Karjala, Karl Zuercher, Jian Wang, Stefan Hinrichs
  • Publication number: 20160137822
    Abstract: The invention provides a composition comprising the following: A) a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus I2 relationship: Mw(abs)<A×[(I2)B], where A=5.00×102 (kg/mole)/(dg/min)B, and B=?0.40; and b) a MS versus I2 relationship: MS?C×[(I2)D], where C=13.5 cN/(dg/min)D, and D=?0.55, c) a melt index (I2) from greater than 0.9 to 2.5 g/10 min; and B) a second ethylene-based polymer; and wherein the second ethylene-based polymer has a melt index (I2) from 0.1 to 4.0 g/10 min.
    Type: Application
    Filed: May 21, 2014
    Publication date: May 19, 2016
    Inventors: Cornelis F.J. den Doelder, Teresa p. Karjala, Otto J. Berbee, Lori L. Kardos