Patents by Inventor David T. Gillespie

David T. Gillespie 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: 11492467
    Abstract: Polyethylene formulations and articles produced therefrom, comprise a multimodal high density polyethylene (HDPE) composition, and 0.1 ppm to 300 ppm of a nucleating agent, wherein the multimodal HDPE composition comprises a density of 0.940 g/cm3 to 0.970 g/cm3 when measured according to ASTM D792, and a melt index (I2) of 0.1 g/10 min. to 10.0 g/10 min. when measured according to ASTM D1238 at 190° C. and a 2.16 kg load, and wherein the multimodal HDPE composition comprises an infrared cumulative detector fraction (CDFIR) of greater than 0.27 and an infrared cumulative detector fraction to light scattering cumulative detector fraction ratio (CDFIR/CDFLS) from 0.7 to 2.0.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: November 8, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Yijian Lin, John L. Sugden, Mridula Kapur, David T. Gillespie
  • Publication number: 20220266574
    Abstract: The present disclosure provides for a heat-shrinkable, biaxially stretched, multilayer thermoplastic film that includes at least a puncture resistant layer. The puncture resistant layer is formed with a polyethylene based plastomer having a density of 0.890 g/cm3to 0.910 g/cm3 as measured in accordance with ASTM D-792, and a melt index (MI) as measured by ASTM D-1238 at 190° C./2.16 kg from 0.20 g/10 minutes to 1.5 g/10 minutes. The polyethylene based plastomer has a log M25% of an upper 25% of a GPC quadrant having a value of 5.1 to 5.7, an intermediate molecular weight distribution (Mw/Mn) of 2.5 to 3, a Mz/Mw value of 2 to 2.5, a Comonomer Distribution Constant value from 60 to 400 and a single SCBD peak between 40-85° C. with a mass fraction of less than 3% above 85° C. as determined by CEF, and a ZSVR value from 1.0 to 5.5. The multilayer thermoplastic film is biaxially stretched at a temperature of 60° C. to 120° C. with a blow-up ratio from 2:1 to 10:1.
    Type: Application
    Filed: August 20, 2019
    Publication date: August 25, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Nicolas Cardoso Mazzola, Sanjib Biswas, Jacquelyn A. deGroot, David T. Gillespie
  • Publication number: 20220251255
    Abstract: A low density polyethylene (LDPE) having a z-average molecular weight Mz (cony) from 425,000 g/mol to 800,000 g/mol, a melt index I2 less than or equal to 0.20 g/10 min, and a conventional GPC Mw/Mn from 8.0 to 10.6. A LDPE having a GPC-light scattering parameter (LSP) less than 2.00, a ratio of viscosity measured at 0.1 radians/second and 190° C. to a viscosity measured at 100 radians/second and 190° C. that is greater than 50, and a z-average molecular weight Mz (cony) from 425,000 g/mol to 800,000 g/mol.
    Type: Application
    Filed: May 29, 2020
    Publication date: August 11, 2022
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Andrew T. Heitsch, Teresa P. Karjala, Lori L. Kardos, Cassie A. Cunningham, Jose Ortega, David T. Gillespie, Venkata Krishna Sai Pappu, John P. O'Brien, Daniel W. Baugh III
  • Patent number: 11384229
    Abstract: Embodiments of polymer compositions and articles comprising such compositions containing at least one LDPE and at least one multimodal ethylene-based polymer having at least three ethylene-based components.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: July 12, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Mehmet Demirors, Yijian Lin, Didem Oner-Deliormanli, Arnaldo T. Lorenzo, David T. Gillespie, Carl N. Iverson
  • Publication number: 20220002924
    Abstract: A nonwoven fabric comprises at least one fiber having a first component prepared from at least 75 wt. % of bimodalethylene/alpha-olefin interpolymer composition, wherein the ethylene/alpha-olefin interpolymer composition is characterized by: a density in the range of 0.930 to 0.965 g/cm3, a melt index (I2) in the range of from 10 to 60 g/10 minutes, wherein the I2 is measured according to ASTM D1238, 190 C, 2.16 kg, a molecular weight distribution, expressed as the ratio of the weight average molecular weight to number average molecular weight (Mw(GPC)/Mn(GPC)) as determined by GPC of from 1.5 to 2.6, a tan delta at 1 radian/second of at least 45, a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C.
    Type: Application
    Filed: November 20, 2019
    Publication date: January 6, 2022
    Inventors: Mehmet DEMIRORS, Fabricio Arteaga LARIOS, Mridula KAPUR, Philip P. FONTAINE, David T. GILLESPIE, Yijian LIN, Lanhe ZHANG, Sanjib BISWAS, Eduardo ALVAREZ, Aleksandar STOILJKOVIC, Rajen M. PATEL
  • Patent number: 11098183
    Abstract: A composition comprising an ethylene-based polymer which comprises the following properties: a) MWD(conv) from 3.0 to 7.0; b) an ADF IR between 0.230 and 0.260 for molecular weight ?15,000 g/mol c) 12 from 4.0 to 6.5 g/10 min.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: August 24, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Jose Ortega, Lori L. Kardos, David T. Gillespie, John N. Naumovitz, Chuan Yar Lai, Zachary L. Polk
  • Publication number: 20210230409
    Abstract: Embodiments of polymer compositions and articles comprising such compositions contain at least one multimodal ethylene-based polymer having at least three ethylene-based components, wherein the multimodal ethylene-based polymer exhibits improved toughness.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 29, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Carl N. Iverson, Amaldo T. Lorenzo, Yijian Lin, Mehmet Demirors, Didem Oner-Deliormanli, David T. Gillespie
  • Patent number: 11046841
    Abstract: Polyethylene formulations, articles produced therefrom, and methods of making articles are provided. The polyethylene formulation includes a multimodal high density polyethylene (HDPE) composition, and 1 ppm to 10,000 ppm of a nucleating agent, wherein the multimodal HDPE composition comprises a density of 0.940 g/cm3 to 0.970 g/cm3 when measured according to ASTM D792, and a melt index (I2) of 0.01 g/10 min. to 1.0 g/10 min. when measured according to ASTM D1238 at 190° C. and a 2.16 kg load, and wherein the multimodal HDPE composition comprises an infrared cumulative detector fraction (CDFIR) of greater than 0.27 and an infrared cumulative detector fraction to light scattering cumulative detector fraction ratio (CDFIR/CDFLS) from 0.7 to 2.0.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: June 29, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Yijian Lin, Mridula Babli Kapur, David T. Gillespie, John L. Sugden, Todd A. Hogan
  • Publication number: 20210108053
    Abstract: A composition comprising an ethylene-based polymer which comprises the following properties: a) MWD(conv) from 3.0 to 7.0; b) an ADF IR between 0.230 and 0.260 for molecular weight ?15,000 g/mol c) 12 from 4.0 to 6.5 g/10 min.
    Type: Application
    Filed: February 27, 2018
    Publication date: April 15, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Jose Ortega, Lori L. Kardos, David T. Gillespie, John N. Naumovitz, Chuan Yar Lai, Zachary L. Polk
  • Publication number: 20210102051
    Abstract: Embodiments of polymer compositions and articles comprising such compositions containing at least one LDPE and at least one multimodal ethylene-based polymer having at least three ethylene-based components.
    Type: Application
    Filed: December 19, 2018
    Publication date: April 8, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Mehmet Demirors, Yijian Lin, Didem Oner-Deliormanli, Arnaldo T. Lorenzo, David T. Gillespie, Carl N. Iverson
  • Patent number: 10836852
    Abstract: A composition comprising an ethylene-based polymer, wherein the ethylene-based polymer comprises the following properties: a) an Mw(abs) from 130,000 to 162,000 g/mol; b) a melt index (I2) from 1.5 to 3.0 g/10 min; c) an ADF LS from 0.350 to 0.450 for molecular weight ?500,000 g/mol.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: November 17, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Lori L. Kardos, David T. Gillespie, Zachary L. Polk
  • Publication number: 20200332036
    Abstract: Embodiments of a polymer compositions and articles comprising such compositions contain at least one multimodal ethylene-based polymer, wherein the multimodal ethylene-based polymer exhibits superior low temperature performance.
    Type: Application
    Filed: December 19, 2018
    Publication date: October 22, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: Didem Oner-Deliormanli, Yijian Lin, Mehmet Demirors, Jong-young Lee, David T. Gillespie
  • Publication number: 20200277474
    Abstract: Polyethylene formulations, articles produced therefrom, and methods of making articles are provided. The polyethylene formulation includes a multimodal high density polyethylene (HDPE) composition, and 1 ppm to 10,000 ppm of a nucleating agent, wherein the multimodal HDPE composition comprises a density of 0.940 g/cm3 to 0.970 g/cm3 when measured according to ASTM D792, and a melt index (I2) of 0.01 g/10 min. to 1.0 g/10 min. when measured according to ASTM D1238 at 190° C. and a 2.16 kg load, and wherein the multimodal HDPE composition comprises an infrared cumulative detector fraction (CDFIR) of greater than 0.27 and an infrared cumulative detector fraction to light scattering cumulative detector fraction ratio (CDFIR/CDFLS) from 0.7 to 2.0.
    Type: Application
    Filed: December 15, 2016
    Publication date: September 3, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: Yijian Lin, Mridula Babli Kapur, David T. Gillespie, John L. Sugden, Todd A. Hogan
  • Patent number: 10759928
    Abstract: A composition comprising an ethylene-based polymer, which comprises the following properties: a) (Mw(abs)/Mw(conv)?2.00)*(100,000 g/mol/Mw(abs))*CDF?IR #191 (MW?10,000 g/mol)?0.030; and b) a melt index (I2) from 0.30 to 2.50 g/10 min.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: September 1, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Hayley A. Brown, Teresa P. Karjala, Lori L. Kardos, David T. Gillespie, Zachary L. Polk, Jose Ortega
  • Patent number: 10759927
    Abstract: The invention provides a composition comprising an ethylene-based polymer, wherein the ethylene-based polymer comprises the following properties: a) a Mw(abs)/Mw(conv) >2.60; and b) a CDFRIR (at Mw<10,000 g/mole) >0.145.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: September 1, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Lori L. Kardos, Hayley A. Brown, David T. Gillespie, Zachary L. Polk, Jose Ortega
  • Publication number: 20200263008
    Abstract: The invention provides a composition comprising an ethylene-based polymer, wherein the ethylene-based polymer comprises the following properties: a) a Mw(abs)/Mw(conv)>2.60; and b) a CDFRIR (at Mw<10,000 g/mole)>0.145.
    Type: Application
    Filed: February 16, 2017
    Publication date: August 20, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: Teresa P. KARJALA, Lori L. KARDOS, Hayley A. BROWN, David T. GILLESPIE, Zachary L. POLK, Jose ORTEGA
  • Patent number: 10738182
    Abstract: A molded article formed from a polymer composition, the polymer composition consisting essentially of: an ethylene homopolymer or ethylene/alpha-olefin copolymer; greater than 20 ppm of a fluoropolymer; and optionally, up to 5 wt. % of one or more of processing aids, acid neutralizers, stabilizers, phosphites, antioxidants, metal de-activators, pigments or colorants, or fillers; wherein the molded article exhibits an oxygen transmission rate [OTR, (cc*mm)/(m2*day*atm)]??3181 (cc2*mm)/g*m2*day*atm)×[Density, g/cc]+3077, (cc*mm)/(m2*day*atm).
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: August 11, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Keran Lu, Yijian Lin, Todd O. Pangburn, Siddharth Ram Athreya, Laura Nunez, John L. Sugden, Todd A. Hogan, Andrew Heitsch, David T. Gillespie
  • Publication number: 20200109271
    Abstract: A composition comprising an ethylene-based polymer, which comprises the following properties: a) (Mw(abs)/Mw(conv)?2.00)*(100,000 g/mol/Mw(abs))*CDF?IR #191 (MW?10,000 g/mol)?0.030; and b) a melt index (I2) from 0.30 to 2.50 g/10 min.
    Type: Application
    Filed: May 17, 2017
    Publication date: April 9, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: Hayley A. Brown, Teresa P. Karjala, Lori L. Kardos, David T. Gillespie, Zachary L. Polk, Jose Ortega
  • Publication number: 20200109223
    Abstract: A composition comprising an ethylene-based polymer, wherein the ethylene-based polymer comprises the following properties: a) an Mw(abs) from 130,000 to 162,000 g/mol; b) a melt index (I2) from 1.5 to 3.0 g/10 min; c) an ADF LS from 0.350 to 0.450 for molecular weight ?500,000 g/mol.
    Type: Application
    Filed: March 19, 2018
    Publication date: April 9, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Lori L. Kardos, David T. Gillespie, Zachary L. Polk
  • Publication number: 20190322846
    Abstract: A molded article formed from a polymer composition, the polymer composition consisting essentially of: an ethylene homopolymer or ethylene/alpha-olefin copolymer; greater than 20 ppm of a fluoropolymer; and optionally, up to 5 wt.
    Type: Application
    Filed: April 23, 2018
    Publication date: October 24, 2019
    Inventors: Keran Lu, Yijian Lin, Todd O. Pangburn, Siddharth Ram Athreya, Laura Nunez, John L. Sugden, Todd A. Hogan, Andrew Heitsch, David T. Gillespie