Patents by Inventor Mohamed Esseghir

Mohamed Esseghir 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: 11261317
    Abstract: A polyolefin composition is foamed by a process in which a nucleator is used, and the nucleator comprises 80% or more of unagglomerated fluororesin particles and/or agglomerates of fluororesin particles in which both the unagglomerated particles and the agglomerates are less than 1 ?m in size.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: March 1, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Gangwei Sun, Mohamed Esseghir, Chester J. Kmiec, Lei Ying, Yabin Sun, Xianmin Xu
  • Publication number: 20210364719
    Abstract: The present disclosure provides a flooding composition. In an embodiment, the flooding composition includes in weight percent (wt %) based on the weight of the composition (A) from 10 wt % to 45 wt % of a silane-grafted polyolefin (Si-g-PO). The flooding composition also includes (B) from 5 wt % to 60 wt % of a poly?-olefin oil (PAO oil), (C) from 15 wt % to 90 wt % of a polysiloxane, and (D) from 0.05 wt % to 0.2 wt % of a catalyst.
    Type: Application
    Filed: March 13, 2019
    Publication date: November 25, 2021
    Inventors: Karl M. Seven, Jeffrey M. Cogen, Mohamed Esseghir
  • Patent number: 11180645
    Abstract: A process of foaming a polyolefin, e.g., polyethylene, composition using as a nucleator a combination of (A) azodicarbonamide, and (B) a mixture of (1) a first component consisting of at least one of citric acid and an alkali metal citrate, and (2) a second component consisting of at least one of an alkali metal citrate, a di-alkali metal hydrogen citrate, an alkali metal dihydrogen citrate and an alkali metal bicarbonate, with the proviso that the mixture is not solely composed of alkali metal citrate.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: November 23, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Gangwei Sun, Mohamed Esseghir, Xianmin Xu, Chester J. Kmiec
  • Publication number: 20210347968
    Abstract: The present disclosure provides a composition. In an embodiment, a crosslinked polymeric composition is provided and comprises (A) from 4 wt % to 45 wt % of a thermoplastic polymer, (B) from 52 wt % to 95 wt % of a moisture-curable polyolefin, and (C) from 0.05 wt % to 7 wt % of a moisture condensation catalyst. The present disclosure provides an article. In an embodiment, a coated conductor is provided and comprises a conductor, and a coating on the conductor. The coating comprises a crosslinked polymeric composition comprising (A) from 4 wt % to 45 wt % of a thermoplastic polymer, (B) from 52 wt % to 95 wt % of a moisture-curable polyolefin, and (C) from 0.05 wt % to 7 wt % of a moisture condensation catalyst.
    Type: Application
    Filed: December 6, 2019
    Publication date: November 11, 2021
    Inventors: Paul J. Brigandi, Kurt A. Bolz, Mohamed Esseghir, Madelaine E. Saunders
  • Publication number: 20210289774
    Abstract: The present disclosure provides a composition. In an embodiment, the composition includes a pest repellent, a barrier polymer, and an ethylene-based polymer. The barrier polymer has a melt temperature, Tm, from 175C to less than 270C. The barrier polymer is selected from the group consisting of one or more polyamides, one or more polyesters, and combinations thereof. Also disclosed is an irrigation tube having an annular wall.
    Type: Application
    Filed: June 27, 2019
    Publication date: September 23, 2021
    Inventors: Rachel C. Anderson, Mohamed Esseghir, Mark T. Jablonka
  • Publication number: 20210277223
    Abstract: Provided is a flooding composition. The flooding composition includes in weight percent (wt %) based on the weight of the composition: (A) from 1 wt % to less than 5 wt % of a polytetrafluoroethylene (PTFE) powder; (B) a styrene-ethylene/propylene block copolymer; and (C) a mineral oil having a kinematic viscosity from 32 cSt to 100 cSt at 40° C. Also a fiber optic cable is provided. The fiber optic cable includes a buffer tube; at least one optical fiber in the buffer tube; and the flooding composition.
    Type: Application
    Filed: July 11, 2018
    Publication date: September 9, 2021
    Inventors: Gangwei Sun, Peng Gao, Mohamed Esseghir
  • Publication number: 20210269611
    Abstract: Articles of manufacture containing an extrusion-foamed polymeric composition. The extrusion-foamed polymeric composition contains an ethylene-based polymer and an olefin-based elastomer. The extrusion-foamed polymeric composition can be prepared from a foamable polymeric composition containing the ethylene-based polymer, the olefin-based elastomer, a nucleating agent, and a blowing agent. The extrusion-foamed polymeric composition can be prepared using an extrusion foaming process.
    Type: Application
    Filed: November 22, 2018
    Publication date: September 2, 2021
    Inventors: Paul J. Brigandi, Mohamed Esseghir, Wenke Miao
  • Publication number: 20210265077
    Abstract: Chemical foaming agents having p-toluenesulfonyl groups. Processes for preparing foamed polyolefin compositions using chemical foaming agents having p-toluenesulfonyl groups. Articles of manufacture containing formed polyolefins prepared using chemical foaming agents having p-toluenesulfonyl groups.
    Type: Application
    Filed: June 15, 2018
    Publication date: August 26, 2021
    Inventors: Gangwei Sun, Hongyu Chen, Mohamed Esseghir, Renhua Fan, Shuo-En Wang
  • Patent number: 11091640
    Abstract: A composition comprises (A) a mineral oil having a viscosity from 32 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C) from 1 wt % to less than 5 wt % polystyrene having a weight average molecular weight (Mw) from 1,000 to 100,000. The composition is used as a filling composition in a buffer tube.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: August 17, 2021
    Inventors: Gangwei Sun, Peng Gao, Yonghua Gong, Mohamed Esseghir
  • Publication number: 20210238370
    Abstract: A melt blended composition comprising, in weight percent (wt %) based upon the weight of the composition: (A) 55 to 94.98 wt % of a thermoplastic polymer, (B) 5 to 44.98 wt % of a moisture curable polymer, (C) 0.01 to 5 wt % of a moisture condensation catalyst, and (D) 0.01 to 5 wt % of a foaming agent, exhibits enhanced foaming, rheological and mechanical properties as compared to a composition alike in all aspects save for the presence of a moisture curable polymer.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 5, 2021
    Inventors: Saswati Pujari, Manish Talreja, Mohamed Esseghir
  • Publication number: 20210238397
    Abstract: A melt blended composition comprising, in weight percent (wt %) based upon the weight of the composition: (A) 55 to 94.99 wt % of a thermoplastic polymer, (B) 5 to 44.99 wt % of a moisture curable polymer, and (C) 0.01 to 5 wt % of a moisture condensation catalyst exhibits enhanced rheological and mechanical properties as compared to a composition alike in all aspects save for the presence of a moisture curable polymer.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 5, 2021
    Inventors: Saswati Pujari, Manish Talreja, Mohamed Esseghir
  • Patent number: 11034823
    Abstract: Wet buffer tubes for use in fiber optic cables are made from a composition comprising in weight percent (wt %) based on the weight of the composition: (A) 22-49% polypropylene (PP), (B) 50-65% high density polyethylene (HDPE), (C) 7-12% compatibilizer comprising in wt % based on the weight of the compatibilizer: (1) 30-90% olefin block composite comprising ethylene-propylene (EP) copolymer, isotactic polypropylene (iPP), and an EP-iPP diblock polymer, and (2) 10-70% maleic anhydride grafted HDPE (MAH-g-HDPE); and (D) 0.05-5.0% nucleating agent.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: June 15, 2021
    Assignee: Dow Global technologies LLC
    Inventors: Karl M. Seven, Mohamed Esseghir
  • Publication number: 20210155801
    Abstract: A composition comprises (A) a mineral oil having a viscosity from 32 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C) from 1 wt % to less than 5 wt % polystyrene having a weight average molecular weight (Mw) from 1,000 to 100,000. The composition is used as a filling composition in a buffer tube.
    Type: Application
    Filed: June 30, 2017
    Publication date: May 27, 2021
    Inventors: Gangwei Sun, Peng Gao, Yonghua Gong, Mohamed Esseghir
  • Publication number: 20210155802
    Abstract: A filling composition comprises (A) a mineral oil having a kinematic viscosity from 80 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C1) a propylene/ethylene copolymer having a weight average molecular weight (Mw) from 5,000 to 200,000 or (C2) an ethylene/propylene copolymer having a weight average molecular weight (Mw) from 5,000 to 200,000. The filling composition is used as a filling composition in a buffer tube.
    Type: Application
    Filed: June 30, 2017
    Publication date: May 27, 2021
    Inventors: Gangwei Sun, XianMin Xu, Mohamed Esseghir, Peng Gao, Youjun Wu, Lingfeng Yu
  • Patent number: 11015043
    Abstract: The present disclosure provides a process. In an embodiment, the process includes blending a broad molecular weight distribution (MWD) ethylene-based polymer having an 121/12 ratio from 55 to 85 with a narrow MWD ethylene-based polymer having an 121/12 ratio from 20 to 50. The process includes forming a blend component comprising from 20 wt % to 45 wt % of the broad MWD ethylene-based polymer, from 80 wt % to 55 wt % of the narrow MWD ethylene-based polymer, and optional carbon black. The blend component has a density from 0.925 g/cc to 0.955 g/cc and an 121/12 ratio from 30 to 55. The process includes extruding the blend component over a conductor at a rate greater than 1.02 m/s, and forming a conductor jacket having a surface smoothness from 30 ?-inch to 80 ?-inch.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 25, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Anny L. Flory, Mohamed Esseghir, Chester J. Kmiec, Rajen M. Patel, Karl M. Seven
  • Publication number: 20210151215
    Abstract: Coated conductors having a conductor at least partially surrounded by a polymeric composition. The polymeric composition contains a broad-molecular-weight-distribution high-density ethylene-based polymer and a narrow-molecular-weight-distribution linear-low-density ethylene-based polymer, and has a density of at least 0.95 g/cm3. Also disclosed are processes for preparing the polymeric composition and for making the coated conductors. Further disclosed are articles of manufacture containing the same.
    Type: Application
    Filed: May 20, 2019
    Publication date: May 20, 2021
    Inventors: Mohamed Esseghir, Anurima Singh
  • Publication number: 20210107200
    Abstract: Polymeric coatings comprising microcapillary structures are applied to a wire or optic fiber using a wire coating apparatus comprising a die (13) assembly comprising a mandrel assembly (16) comprising: (A) a housing (12) comprising: (1) a housing (12) wire tubular channel extending along (a) the length of the housing (12), and (b) the longitudinal centerline axis of the housing (12); (2) a fluid annular channel encircling the wire tubular channel; (3) a fluid ring (28) in fluid communication with the fluid annular channel, the fluid ring (28) positioned at one end of the housing (12); and (B) a cone-shaped tip having a wide end and a narrow end, the wide end of the tip attached to the end of the housing (12) at which the fluid ring (28) is positioned, the tip comprising: (1) a tip wire tubular channel extending along (a) the length of the tip, and (b) the longitudinal centerline axis of the tip; (2) a tip fluid channel (27) in fluid communication with the fluid ring (28); and (3) one or more nozzles (29A) in
    Type: Application
    Filed: November 13, 2017
    Publication date: April 15, 2021
    Inventors: Wenyi Huang, Mohamed Esseghir, Scott R. Kaleyta, Chester J. Kmiec, Robert E. Wrisley
  • Patent number: 10908376
    Abstract: The present disclosure provides a conduit (10). The conduit (10) includes (i) an annular wall (66) composed of a polymeric material, the annular wall (66) defining an annular passageway; (ii) a plurality of channels (68) extending along a length of an inner surface (62) of the annular wall (66); and (iii) a slip material located in the channels (68), the slip material forming a capillary structure (70) in the channels (68), and the capillary structures (70) protruding radially inward from the annular wall (66).
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: February 2, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Mohamed Esseghir, Chester J. Kmiec, Wenyi Huang, Thomas J. Parsons
  • Patent number: 10858492
    Abstract: A foamable composition comprises in weight percent based on the weight of the composition: (A) 45 to 95 wt % HDPE, (B) 4 to 54 wt % LDPE, and (C) 0.01 to 2 wt % of a nucleating agent comprising in weight percent based on the weight of the nucleating agent: (1) 20 to 80 wt % of fluororesin, e.g., PTFE, and (2) 80 to 20 wt % of expandable polymeric microspheres.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: December 8, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Gangwei Sun, Mohamed Esseghir, Yonghua Gong
  • Patent number: 10836879
    Abstract: The process of foaming a polyolefin composition using as a nucleator a combination of a fluororesin and a boron nitride at a fluororesin-to-boron nitride weight ratio of less than 4:1. The synergistic effect between these two nucleating agents results in a higher nuclei density and a foamed product with a smaller average cell size as compared to processes using and products produced by the use of neat PTFE or neat boron nitride alone as the nucleating agent.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: November 17, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Gangwei Sun, Mohamed Esseghir