Patents by Inventor Swapnil Chandak

Swapnil Chandak 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: 11845855
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: December 19, 2023
    Assignee: UNIVATION TECHNOLOGIES LLC
    Inventors: Swapnil Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Patent number: 11149136
    Abstract: Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (12) of from 0.1 to 0.7 gram/10 minute, a melt flow ratio (121/12) of from 20 to 90. The bimodal polyethylene includes a high molecular weight polyethylene component and a low molecular weight polyethylene component which are a reaction product of a polymerization process performed in a single reactor and that employs a bimodal polymerization catalyst system. The bimodal polymerization catalyst system includes a bimodal catalyst system of bis(2-pentamethylphenylamido)ethyl)amine Zirconium dibenzyl and either (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloride or (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl in a 3.0:1 molar ratio; and a trim catalyst of (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloridedimethyl in heptane added to adjust melt.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: October 19, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Nitin Borse, Swapnil Chandak, Ayush A. Bafna, Cliff R. Mure, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Publication number: 20210095109
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Application
    Filed: December 10, 2020
    Publication date: April 1, 2021
    Inventors: Swapnil Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Patent number: 10941284
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: March 9, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Swapnil Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Publication number: 20200140666
    Abstract: A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene and (B) a metallocene catalyst-made linear low density polyethylene, a composition comprising the polyethylene blend and at least one additive, methods of making and using same, and manufactured articles and films comprising or made from same.
    Type: Application
    Filed: May 29, 2018
    Publication date: May 7, 2020
    Inventors: Swapnil Chandak, Nitin Borse
  • Publication number: 20200071509
    Abstract: Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (12) of from 0.1 to 0.7 gram/10 minute, a melt flow ratio (121/12) of from 20 to 90. The bimodal polyethylene includes a high molecular weight polyethylene component and a low molecular weight polyethylene component which are a reaction product of a polymerization process performed in a single reactor and that employs a bimodal polymerization catalyst system. The bimodal polymerization catalyst system includes a bimodal catalyst system of bis(2-pentamethylphenylamido)ethyl)amine Zirconium dibenzyl and either (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloride or (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl in a 3.
    Type: Application
    Filed: October 25, 2017
    Publication date: March 5, 2020
    Applicant: Univation Technologies, LLC
    Inventors: Nitin BORSE, Swapnil CHANDAK, Ayush A. BAFNA, Cliff R. MURE, Yi ZHANG, Timothy R. LYNN, Roger L. KUHLMAN, John F. SZUL
  • Patent number: 9815975
    Abstract: The present invention relates to a monolayer film comprising a mixture of a first linear polyethylene having a density in the range of from 0.926 to 0.970 g/cm3; a second LLDPE having a density in the range of from 0.868 to 0.920 g/cm3; and a nucleating agent to get to a better balance of low WVTR and dart while still allowing film production from it on standard monolayer equipment without need for co-extrusion capability. The LLDPE with the higher density is further characterized by having at least 57 percent (by weight of that component) of molecules having a weight average molecular weight in the range of 31,000 g/mole to 1,000,000 g/mole. These components are blended in various ratios ranging from 50 to 90% of the higher density LLDPE, 10 to 50% of the lower density LLDPE and at least 50 ppm of the nucleating agent.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: November 14, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Swapnil Chandak, Ayush A. Bafna
  • Publication number: 20170247580
    Abstract: A cling foil comprising an outermost adhesive layer comprising a pressure sensitive adhesive, an outermost release layer, the outermost release layer comprising a release material, and a foil layer positioned between the outermost adhesive layer and the outermost release layer.
    Type: Application
    Filed: September 17, 2015
    Publication date: August 31, 2017
    Applicants: Rohm and Haas Company, Dow Global Technologies LLC
    Inventors: Swapnil Chandak, Rajen M. Patel, William B. Griffith, JR., Daniel W. Himmelberger
  • Publication number: 20140287215
    Abstract: The present invention relates to a monolayer film comprising a mixture of a first linear polyethylene having a density in the range of from 0.926 to 0.970 g/cm3; a second LLDPE having a density in the range of from 0.868 to 0.920 g/cm3; and a nucleating agent to get to a better balance of low WVTR and dart while still allowing film production from it on standard monolayer equipment without need for co-extrusion capability. The LLDPE with the higher density is further characterized by having at least 57 percent (by weight of that component) of molecules having a weight average molecular weight in the range of 31,000 g/mole to 1,000,000 g/mole. These components are blended in various ratios ranging from 50 to 90% of the higher density LLDPE, 10 to 50% of the lower density LLDPE and at least 50 ppm of the nucleating agent.
    Type: Application
    Filed: March 25, 2013
    Publication date: September 25, 2014
    Applicant: Dow Global Technologies LLC
    Inventors: Swapnil Chandak, Ayush A. Bafna