Patents by Inventor Debkumar Bhattacharjee

Debkumar Bhattacharjee 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: 10513095
    Abstract: A shrink film comprising a polyethylene-based film having a top surface, a bottom surface, and comprising one or more layers, wherein at least one layer of the polyethylene-based film comprises a low density polyethylene having a density of from 0.917 g/cc to 0.935 g/cc and melt index, I2, of from 0.1 g/10 min to 5 g/10 min, a linear low density polyethylene having a density of from 0.900 g/cc to 0.965 g/cc and melt index, I2, of from 0.05 g/10 min to 15 g/10 min, or combinations thereof, and optionally, a medium density polyethylene, a high density polyethylene, or combinations thereof, and a coating layer disposed on the top surface of the polyethylene-based film, wherein the coating layer comprises an adhesive and a near-infrared absorbent material.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: December 24, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Mauricio E. Leano, Paul R. Elowe, Mary Anne Leugers, Debkumar Bhattacharjee, Todd O. Pangburn, Bruce Peterson, Matthew Toyli
  • Publication number: 20190366615
    Abstract: Embodiments of a thermoformed microcapillary sheeting and articles prepared by a process comprising the steps of (a) providing a thermoplastic sheeting comprising thermoplastic material, wherein the thermoplastic sheeting comprises at least one or more microcapillary channel disposed therein and having an initial volume of voidage, based on a total volume of the microcapillary sheeting; and (b) heating the thermoplastic sheeting to a temperature at which the thermoplastic material is deformable to form a thermoformed microcapillary sheeting with the at least one or more microcapillary channels disposed therein and having a final volume of voidage, based on a total volume of the microcapillary sheeting. The final volume of voidage of the at least one or more microcapillary channels of the thermoformed microcapillary sheeting is at least about 10 percent of the initial volume of voidage of the at least one or more microcapillary channels of the thermoplastic sheeting.
    Type: Application
    Filed: December 29, 2016
    Publication date: December 5, 2019
    Applicant: Dow Global Technologies LLC
    Inventors: Wenyi Huang, Joseph Dooley, Jill M. Martin, Debkumar Bhattacharjee, Todd A. Hogan, Kumar N. Sanketh
  • Publication number: 20180305508
    Abstract: Provided is an aqueous composition comprising dispersed particles that comprise a polyurethane, wherein said polyurethane is a reaction product of a group of reactants (GR1), wherein GR1 comprises one or more aromatic polyisocyanates and, a polyol component, wherein said polyol component comprises (a) 50% to 99% by weight, based on the weight of said polyol component, one or more polyester polyols, (b) 0.1% to 10% by weight, based on the weight of said polyol component, one or more diols having a hydrophilic side chain, and (c) 0.9% to 40% by weight, based on the weight of said polyol component, one or more polyols different from (a) and (b). Also provided is a method of bonding a metal foil to a polymer film using such an aqueous composition.
    Type: Application
    Filed: June 25, 2018
    Publication date: October 25, 2018
    Inventors: Chenyan Bai, Zhaohui Qu, Hong Liang Zhang, Debkumar Bhattacharjee
  • Publication number: 20180298253
    Abstract: The present invention provides an adhesive composition comprising, by dry weight based on total dry weight of the adhesive composition, from 70% to 96%, a polyurethane dispersion, from 1% to 20%, an epoxy resin, and from 0.5% to 15%, an aliphatic amine crosslinker. It further provides a laminate comprising the adhesive composition.
    Type: Application
    Filed: October 26, 2015
    Publication date: October 18, 2018
    Inventors: Chenyan BAI, Zhaohui QU, Debkumar BHATTACHARJEE
  • Patent number: 9969150
    Abstract: A multilayer film comprising (a) a biaxially-oriented polyethylene furanoate (BO-PEF) polymer layer, (b) an optional ink layer, (c) a bonding layer, and (d) a sealant layer, wherein the BO-PEF polymer has an O2 gas permeability of less than 0.25 cc-mil/100 in.2 24 hrs atm at 80% relative humidity, or a moisture permeability of less than 0.5 g-mil/100 in.2 24 hrs atm at 38° C., or both. The film may be formed from microlayers of BO-PEF-based polymer and polymer with a melting point of at least 5° C. greater than the melting point of the BO-PEF-based polymer.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: May 15, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: Debkumar Bhattacharjee, Steven R. Jenkins, Kalyan Sehanobish
  • Publication number: 20170341353
    Abstract: A shrink film comprising a polyethylene-based film having a top surface, a bottom surface, and comprising one or more layers, wherein at least one layer of the polyethylene-based film comprises a low density polyethylene having a density of from 0.917 g/cc to 0.935 g/cc and melt index, I2, of from 0.1 g/10 min to 5 g/10 min, a linear low density polyethylene having a density of from 0.900 g/cc to 0.965 g/cc and melt index, I2, of from 0.05 g/10 min to 15 g/10 min, or combinations thereof, and optionally, a medium density polyethylene, a high density polyethylene, or combinations thereof, and a coating layer disposed on the top surface of the polyethylene-based film, wherein the coating layer comprises an adhesive and a material that absorbs radiation in the near-infrared, visible, and ultraviolet spectral wavelength ranges.
    Type: Application
    Filed: October 21, 2015
    Publication date: November 30, 2017
    Inventors: Mauricio E. Leano, Paul R. Elowe, Mary Anne Leugers, Debkumar Bhattacharjee, Todd O. Pangburn, Bruce Peterson
  • Publication number: 20170259541
    Abstract: A shrink film comprising a polyethylene-based film having a top surface, a bottom surface, and comprising one or more layers, wherein at least one layer of the polyethylene-based film comprises a low density polyethylene having a density of from 0.917 g/cc to 0.935 g/cc and melt index, I2, of from 0.1 g/10 min to 5 g/10 min, a linear low density polyethylene having a density of from 0.900 g/cc to 0.965 g/cc and melt index, I2, of from 0.05 g/10 min to 15 g/10 min, or combinations thereof, and optionally, a medium density polyethylene, a high density polyethylene, or combinations thereof, and a coating layer disposed on the top surface of the polyethylene-based film, wherein the coating layer comprises an adhesive and a near-infrared absorbent material.
    Type: Application
    Filed: October 21, 2015
    Publication date: September 14, 2017
    Inventors: Mauricio E. Leano, Paul R. Elowe, Mary Anne Leugers, Debkumar Bhattacharjee, Todd O. Pangburn, Bruce Peterson, Matthew Toyli
  • Publication number: 20170183461
    Abstract: The instant invention provides microcapillary films. The inventive microcapillary film according to the present invention comprises a first end and a second end, wherein the microcapillary film comprises: (a) a matrix comprising a thermoplastic material, (b) at least one or more channels disposed in parallel in said matrix from the first end to the second end of said film, wherein said one or more channels are at least 1 ?m apart from each other, and wherein each said one or more channels have a diameter in the range of at least 1 ?m; and wherein said microcapillary film comprise from 10 to 90 percent by volume of voidage, based on the total volume of the microcapillary film, and wherein said one or more channels has a aspect ratio in the range of from 1:1 to 100:1; and wherein said film has a thickness in the range of from 5 ?m to 500 ?m.
    Type: Application
    Filed: January 30, 2015
    Publication date: June 29, 2017
    Inventors: Julie W. McKenna, Debkumar Bhattacharjee, Joseph Dooley, Wenyi Huang, Todd O. Pangburn, Rajen M. Patel
  • Publication number: 20170165948
    Abstract: A film comprising a) at least one base layer comprising a thermoplastic polymeric matrix material; and b) a skin layer comprising a thermoplastic polymeric matrix material and from 5 wt % to 80 wt % of polymeric particles having an average particle diameter from 0.5 ?m to 15 ?m, a refractive index from 1.46 to 1.7, and at least 60 mole % of acrylic monomer units wherein the film is stretched by a factor of 2 to 8 uniaxially or biaxially; and wherein after stretching, the skin layer has a thickness that is between 50% and 200% of the diameter of the polymeric particles, and a method of making the film, are disclosed.
    Type: Application
    Filed: February 9, 2015
    Publication date: June 15, 2017
    Inventors: Rajasingh Solomon Thomas Udhaya Singh, Alexander Williamson, Edward E. Lafleur, Sekhar Sundaram, Xinyu Gu, Debkumar Bhattacharjee, Himal Ray
  • Patent number: 9624341
    Abstract: A polymer comprises reaction product of (a) one or more diacid, diester thereof, glycolide, and (b) one or more polyol, wherein component (a) comprises glycolide or combinations thereof, and component (b) comprises one or more polyol comprising a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, or 2,2,4,4-tetramethyl-1,3-cyclobutanediol, or combinations thereof.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: April 18, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Debkumar Bhattacharjee, Kalyan Sehanobish
  • Publication number: 20170087759
    Abstract: The instant disclosure provides a die assembly for producing an annular microcapillary product. The die assembly is operatively connectable to an extruder having a thermoplastic material passing therethrough. The die assembly includes a shell, an inner manifold, an outer manifold, and a die assembly. The inner and outer manifolds are positionable in the shell with matrix flow channels thereabout to receive the thermoplastic material therethrough such that matrix layers of the thermoplastic material are extrudable therefrom. The die insert is disposable between the inner and the outer manifolds, and has a distribution manifold with a tip at an end thereof defining microcapillary channels to pass a microcapillary material therethrough whereby microcapillaries are formed between the matrix layers.
    Type: Application
    Filed: April 28, 2015
    Publication date: March 30, 2017
    Inventors: Wenyi Huang, Joseph Dooley, Patrick Chang Dong Lee, Thomas J. Parsons, Debkumar Bhattacharjee
  • Patent number: 9580594
    Abstract: A polymer comprising reaction product of (a) one or more diacid or diester thereof, and (b) one or more polyol, wherein component (a) comprises 5 to 100 mole %, based on the total amount of component (a), of 2,5-furan dicarboxylic acid (FDCA), or one or more C1 to C10 alkyl diester thereof, and component (b) comprises a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, or 2,2,4,4-tetramethyl-1,3-cyclobutanediol, or combinations thereof.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: February 28, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Debkumar Bhattacharjee, Kalyan Sehanobish
  • Patent number: 9580542
    Abstract: A polymer comprising reaction product of (a) one or more diacid, diester thereof, glycolide, and (b) one or more polyol, wherein component (a) comprises (i) 2,6-naphthalene dicarboxylic acid, C1 to C10 alkyl diester thereof, glycolic acid, glycolide or combinations thereof, and (ii) 2,5-furan dicarboxylic acid, one or more C1 to C10 alkyl diester thereof, or combinations thereof, and component (b) comprises isosorbide.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: February 28, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Debkumar Bhattacharjee, Kalyan Sehanobish
  • Patent number: 9512262
    Abstract: The instant invention is a polyurethane dispersion, method of producing the same, coated articles, and method for coating articles. The polyurethane dispersion according to the present inventions includes (a) one or more polyurethane units derived from one or more prepolymers wherein the one or more prepolymers comprise the reaction product of a mixture dissolved in dipropylene glycol dimethyl ether in the presence of one or more first surfactants with one or more isocyanates, wherein the mixture comprises one or more natural oil based polyols, and one or more adipate polyols, and optionally one or more short diols; and (b) water.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: December 6, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Bedri Erdem, Kumar Nanjundiah, John N. Argyropoulos, Michael C. Kaufman, Jihui Guo, Paul Foley, Debkumar Bhattacharjee
  • Publication number: 20160333155
    Abstract: Provided is an aqueous composition comprising dispersed particles that comprise a polyurethane, wherein said polyurethane is a reaction product of a group of reactants (GR1), wherein GR1 comprises one or more aromatic polyisocyanates and, a polyol component, wherein said polyol component comprises (a) 50% to 99% by weight, based on the weight of said polyol component, one or more polyester polyols, (b) 0.1% to 10% by weight, based on the weight of said polyol component, one or more diols having a hydrophilic side chain, and (c) 0.9% to 40% by weight, based on the weight of said polyol component, one or more polyols different from (a) and (b). Also provided is a method of bonding a metal foil to a polymer film using such an aqueous composition.
    Type: Application
    Filed: December 3, 2013
    Publication date: November 17, 2016
    Inventors: Chenyan Bai, Zhaohui Qu, Hong Liang Zhang, Debkumar Bhattacharjee
  • Patent number: 9487337
    Abstract: The invention provides a layered structure comprising at least two layers: A) a first layer A, formed from a composition A, comprising a polyurethane; and B) a second layer B, formed from a composition B, comprising at least one functionalized polymer B comprising the following: i) at least one polymerized monomeric unit comprising a functional group selected from the group consisting of the following: a) an acid group, b) an anhydride group, c) a primary or secondary amine group, and d) combinations thereof; or ii) at least one reacted functionalization agent comprising a functional group selected from the group consisting of the following: e) an acid group, f) an anhydride group, g) a primary or secondary amine group, and h) combinations thereof; or iii) combinations thereof; and wherein the functionalized polymer B has a number-average molecular weight greater than 1,000 g/mole, and/or a melt index (I2) less than, or equal to, 2500 g/10 min.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: November 8, 2016
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Sekhar Sundaram, Debkumar Bhattacharjee, Jozef J. Van Dun, Bradley A. Jacobs, Rajen M. Patel, Alexander Williamson
  • Publication number: 20160222156
    Abstract: A polymer comprising reaction product of (a) one or more diacid, diester thereof, glycolide, and (b) one or more polyol, wherein component (a) consists essentially of 2,6-napthalene dicarboxylic acid (NDCA), C1 to C10 alkyl diester thereof, or combinations thereof, and component (b) comprises isosorbide.
    Type: Application
    Filed: December 18, 2013
    Publication date: August 4, 2016
    Inventors: Debkumar Bhattacharjee, Kalyan Sehanobish
  • Patent number: 9394402
    Abstract: A polymer comprises reaction product of (a) one or more diacid, diester thereof, or glycolide, and (b) one or more polyol, wherein component (a) comprises glycolide or combinations thereof, and component (b) consists essentially of isosorbide. A film or sheet having one or more layers, wherein at least one layer comprising a polymer comprises reaction product of (a) one or more diacid, diester thereof, or glycolide, and (b) one or more polyol, wherein component (a) comprises glycolide or combinations thereof, and component (b) consists essentially of isosorbide.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: July 19, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Debkumar Bhattacharjee, Kalyan Sehanobish
  • Publication number: 20160002394
    Abstract: A polymer comprises reaction product of (a) one or more diacid, diester thereof, glycolide, and (b) one or more polyol, wherein component (a) comprises glycolide or combinations thereof, and component (b) comprises one or more polyol comprising a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, or 2,2,4,4-tetramethyl-1,3-cyclobutanediol, or combinations thereof.
    Type: Application
    Filed: December 18, 2013
    Publication date: January 7, 2016
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Debkumar Bhattacharjee, Kalyan Sehanobish
  • Publication number: 20150353692
    Abstract: A barrier film comprising a polyester-based polymer with (a) an O2 gas permeability of 0.25 cc-mil/100 in.2 24 hrs atm (5 cc 20 ?m/m2 24 hrs atm) at 80% relative humidity (ASTM D-3985) or less, (b) a moisture permeability of 0.5 g-mil/100 in.2 24 hrs atm (9.8 g 20 ?m/m2 24 hrs atm) at 38° C. (ASTM F-1249) or less, (c) haze of 1% or less (ASTM D1003), and (d) a glass transition temperature of 100° C. or higher. The polyester-based polymer may comprise reaction product of (a) one or more diacid or diester thereof, and (b) one or more polyol, wherein component (a) comprises 5 to 100 mole %, based on the total amount of component (a), of 2,5-furan dicarboxylic acid, or one or more C1 to C10 alkyl diester thereof, and component (b) comprises ethylene glycol, a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, or 2,2,4,4-tetramethyl-1,3-cyclobutanediol, or combinations thereof.
    Type: Application
    Filed: December 18, 2013
    Publication date: December 10, 2015
    Inventors: Debkumar Bhattacharjee, Steven R. Jenkins, Kalyan Sehanobish