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).
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Patent number: 11542376Abstract: 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: GrantFiled: June 25, 2018Date of Patent: January 3, 2023Assignees: ROHM AND HAAS COMPANY, DOW GLOBAL TECHNOLOGIES LLCInventors: Chenyan Bai, Zhaohui Qu, Hong Liang Zhang, Debkumar Bhattacharjee
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Patent number: 10513095Abstract: 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: GrantFiled: October 21, 2015Date of Patent: December 24, 2019Assignee: Dow Global Technologies LLCInventors: Mauricio E. Leano, Paul R. Elowe, Mary Anne Leugers, Debkumar Bhattacharjee, Todd O. Pangburn, Bruce Peterson, Matthew Toyli
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Publication number: 20190366615Abstract: 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: ApplicationFiled: December 29, 2016Publication date: December 5, 2019Applicant: Dow Global Technologies LLCInventors: Wenyi Huang, Joseph Dooley, Jill M. Martin, Debkumar Bhattacharjee, Todd A. Hogan, Kumar N. Sanketh
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Publication number: 20180305508Abstract: 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: ApplicationFiled: June 25, 2018Publication date: October 25, 2018Inventors: Chenyan Bai, Zhaohui Qu, Hong Liang Zhang, Debkumar Bhattacharjee
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Publication number: 20180298253Abstract: 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: ApplicationFiled: October 26, 2015Publication date: October 18, 2018Inventors: Chenyan BAI, Zhaohui QU, Debkumar BHATTACHARJEE
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Patent number: 9969150Abstract: 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: GrantFiled: December 18, 2013Date of Patent: May 15, 2018Assignee: Dow Global Technologies LLCInventors: Debkumar Bhattacharjee, Steven R. Jenkins, Kalyan Sehanobish
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Publication number: 20170341353Abstract: 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: ApplicationFiled: October 21, 2015Publication date: November 30, 2017Inventors: Mauricio E. Leano, Paul R. Elowe, Mary Anne Leugers, Debkumar Bhattacharjee, Todd O. Pangburn, Bruce Peterson
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Publication number: 20170259541Abstract: 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: ApplicationFiled: October 21, 2015Publication date: September 14, 2017Inventors: Mauricio E. Leano, Paul R. Elowe, Mary Anne Leugers, Debkumar Bhattacharjee, Todd O. Pangburn, Bruce Peterson, Matthew Toyli
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Publication number: 20170183461Abstract: 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: ApplicationFiled: January 30, 2015Publication date: June 29, 2017Inventors: Julie W. McKenna, Debkumar Bhattacharjee, Joseph Dooley, Wenyi Huang, Todd O. Pangburn, Rajen M. Patel
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Publication number: 20170165948Abstract: 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: ApplicationFiled: February 9, 2015Publication date: June 15, 2017Inventors: Rajasingh Solomon Thomas Udhaya Singh, Alexander Williamson, Edward E. Lafleur, Sekhar Sundaram, Xinyu Gu, Debkumar Bhattacharjee, Himal Ray
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Patent number: 9624341Abstract: 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: GrantFiled: December 18, 2013Date of Patent: April 18, 2017Assignee: Dow Global Technologies LLCInventors: Debkumar Bhattacharjee, Kalyan Sehanobish
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Publication number: 20170087759Abstract: 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: ApplicationFiled: April 28, 2015Publication date: March 30, 2017Inventors: Wenyi Huang, Joseph Dooley, Patrick Chang Dong Lee, Thomas J. Parsons, Debkumar Bhattacharjee
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Patent number: 9580594Abstract: 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: GrantFiled: December 18, 2013Date of Patent: February 28, 2017Assignee: Dow Global Technologies LLCInventors: Debkumar Bhattacharjee, Kalyan Sehanobish
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Patent number: 9580542Abstract: 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: GrantFiled: December 18, 2013Date of Patent: February 28, 2017Assignee: Dow Global Technologies LLCInventors: Debkumar Bhattacharjee, Kalyan Sehanobish
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Patent number: 9512262Abstract: 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: GrantFiled: February 8, 2010Date of Patent: December 6, 2016Assignee: Dow Global Technologies LLCInventors: Bedri Erdem, Kumar Nanjundiah, John N. Argyropoulos, Michael C. Kaufman, Jihui Guo, Paul Foley, Debkumar Bhattacharjee
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Publication number: 20160333155Abstract: 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: ApplicationFiled: December 3, 2013Publication date: November 17, 2016Inventors: Chenyan Bai, Zhaohui Qu, Hong Liang Zhang, Debkumar Bhattacharjee
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Patent number: 9487337Abstract: 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: GrantFiled: September 19, 2012Date of Patent: November 8, 2016Assignees: Dow Global Technologies LLC, Rohm and Haas CompanyInventors: Sekhar Sundaram, Debkumar Bhattacharjee, Jozef J. Van Dun, Bradley A. Jacobs, Rajen M. Patel, Alexander Williamson
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Publication number: 20160222156Abstract: 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: ApplicationFiled: December 18, 2013Publication date: August 4, 2016Inventors: Debkumar Bhattacharjee, Kalyan Sehanobish
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Patent number: 9394402Abstract: 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: GrantFiled: December 18, 2013Date of Patent: July 19, 2016Assignee: Dow Global Technologies LLCInventors: Debkumar Bhattacharjee, Kalyan Sehanobish
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Publication number: 20160002394Abstract: 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: ApplicationFiled: December 18, 2013Publication date: January 7, 2016Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Debkumar Bhattacharjee, Kalyan Sehanobish