Patents by Inventor Pranit S Metkar

Pranit S Metkar 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: 11926587
    Abstract: Disclosed herein is a process for upgrading a raffinate butene (C4 Raffinate) stream to propylene which can produce polymer grade propylene (PGP) by a metathesis process, without consuming fresh ethylene as a feedstock. By recycling ethylene byproduct in the metathesis equilibrium, propylene selectivity can be further improved without negatively impacting butene conversion. Additionally, upon PGP separation, this technology can provide an effluent acceptable for alkylate production by achieving a balanced butene conversion and heavies coproduction. The disclosed process is a relatively low temperature process which can be deployed as a drop-in option for conventional ethylene/butene metathesis unit and provide additional flexibility to existing operations to balance the supply and demand of C2-C4 light olefins.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: March 12, 2024
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Lei Zhang, Pranit S. Metkar, Majid Keyvani, Daniel F. White
  • Publication number: 20220274941
    Abstract: Disclosed herein are processes for producing 2,5-furandicarboxylic acid dialkyl ester. In one embodiment, the process comprises a) contacting 2,5-furan dicarboxylic acid, excess alcohol, and optionally, a catalyst in a reactor at a temperature in the range of from 50° C. to 325° C. and a pressure in the range of between 1 bar to 140 bar to form a liquid phase composition comprising an ester of 2,5-furan dicarboxylic acid, the alcohol and water; b) lowering the temperature of the liquid phase composition to form a crude crystallized ester of 2,5-furan dicarboxylic acid; c) separating the product of step b) to form a solids phase comprising a purified ester of 2,5-furan dicarboxylic acid and a mother liquor comprising alcohol and water; and d) removing at least a portion of the water from the mother liquor. In one embodiment, the 2,5-furan dicarboxylic acid is contacted with an alcohol source and optionally, a catalyst.
    Type: Application
    Filed: May 4, 2022
    Publication date: September 1, 2022
    Inventors: Pranit S Metkar, Ronnie Ozer, Eric R. Sacia
  • Publication number: 20220259168
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Application
    Filed: April 26, 2022
    Publication date: August 18, 2022
    Inventors: Pranit S. METKAR, Ronnie OZER, Bhuma RAJAGOPALAN
  • Patent number: 11358920
    Abstract: A process of producing allyl alcohol by reacting glycerin with ReO3—Al2O3 in the presence of gamma-valerolactone (GVL) in a reactor is described. More specifically, a process to produce allyl alcohol, comprising the step of: a) reacting glycerin with ReO3—Al2O3 in the presence of an inert solvent, GVL, in a reactor, and b) collecting the product comprising allyl alcohol.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: June 14, 2022
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Xueyong Yang, Daniel F. White, Chelsee A. Arceneaux, Pranit S. Metkar
  • Publication number: 20220081376
    Abstract: Disclosed herein is a process for upgrading a raffinate butene (C4 Raffinate) stream to propylene which can produce polymer grade propylene (PGP) by a metathesis process, without consuming fresh ethylene as a feedstock. By recycling ethylene byproduct in the metathesis equilibrium, propylene selectivity can be further improved without negatively impacting butene conversion. Additionally, upon PGP separation, this technology can provide an effluent acceptable for alkylate production by achieving a balanced butene conversion and heavies coproduction. The disclosed process is a relatively low temperature process which can be deployed as a drop-in option for conventional ethylene/butene metathesis unit and provide additional flexibility to existing operations to balance the supply and demand of C2-C4 light olefins.
    Type: Application
    Filed: September 14, 2021
    Publication date: March 17, 2022
    Applicant: Lyondell Chemical Technology, L.P.
    Inventors: Lei Zhang, Pranit S. Metkar, Majid Keyvani, Daniel F. White
  • Publication number: 20220048840
    Abstract: A process of producing allyl alcohol by reacting glycerin with ReO3—Al2O3 in the presence of gamma-valerolactone (GVL) in a reactor is described. More specifically, a process to produce allyl alcohol, comprising the step of: a) reacting glycerin with ReO3—Al2O3 in the presence of an inert solvent, GVL, in a reactor, and b) collecting the product comprising allyl alcohol.
    Type: Application
    Filed: July 30, 2021
    Publication date: February 17, 2022
    Applicant: Lyondell Chemical Technology, L.P.
    Inventors: Xueyong Yang, Daniel F. White, Chelsee A. Arceneaux, Pranit S. Metkar
  • Publication number: 20210188794
    Abstract: Disclosed herein are processes for producing 2,5-furandicarboxylic acid dialkyl ester. In one embodiment, the process comprises a) contacting 2,5-furan dicarboxylic acid, excess alcohol, and optionally, a catalyst in a reactor at a temperature in the range of from 50° C. to 325° C. and a pressure in the range of between 1 bar to 140 bar to form a liquid phase composition comprising an ester of 2,5-furan dicarboxylic acid, the alcohol and water; b) lowering the temperature of the liquid phase composition to form a crude crystallized ester of 2,5-furan dicarboxylic acid; c) separating the product of step b) to form a solids phase comprising a purified ester of 2,5-furan dicarboxylic acid and a mother liquor comprising alcohol and water; and d) removing at least a portion of the water from the mother liquor. In one embodiment, the 2,5-furan dicarboxylic acid is contacted with an alcohol source and optionally, a catalyst.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 24, 2021
    Inventors: PRANIT S. METKAR, Ronnie Ozer, Eric R. Sacia
  • Publication number: 20210024480
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Application
    Filed: October 12, 2020
    Publication date: January 28, 2021
    Inventors: PRANIT S METKAR, RONNIE OZER, BHUMA RAJAGOPALAN
  • Patent number: 10865190
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: December 15, 2020
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Pranit S Metkar, Ronnie Ozer, Bhuma Rajagopalan
  • Publication number: 20200255391
    Abstract: Disclosed herein are processes for producing 2,5-furandicarboxylic acid dialkyl ester. In one embodiment, the process comprises a) contacting 2,5-furan dicarboxylic acid, excess alcohol, and optionally, a catalyst in a reactor at a temperature in the range of from 50° C. to 325° C. and a pressure in the range of between 1 bar to 140 bar to form a liquid phase composition comprising an ester of 2,5-furan dicarboxylic acid, the alcohol and water; b) lowering the temperature of the liquid phase composition to form a crude crystallized ester of 2,5-furan dicarboxylic acid; c) separating the product of step b) to form a solids phase comprising a purified ester of 2,5-furan dicarboxylic acid and a mother liquor comprising alcohol and water and d) removing at least a portion of the water from the mother liquor. In one embodiment, the 2,5-furan dicarboxylic acid is contacted with an alcohol source and optionally, a catalyst.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Inventors: Pranit S. Metkar, Ronnie Ozer, Eric R. Sacia
  • Publication number: 20200231557
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Application
    Filed: April 3, 2020
    Publication date: July 23, 2020
    Inventors: Pranit S. METKAR, Ronnie OZER, Bhuma RAJAGOPALAN
  • Patent number: 10526549
    Abstract: The present disclosure relates to a method including subjecting an organic stream comprising at least one oxygenate to hydrotreatment, whereby a hydrotreatment product comprising ethylbenzene is produced, wherein the organic stream is a product of a process for the production of propylene oxide; and separating an ethylbenzene product stream from the hydrotreatment product, to yield a residual stream.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: January 7, 2020
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Sandor Nagy, Dan D. Lindsey, Barbara Kimmich, Justin E. Turner, Nicholas Bruschi, Ha H. Nguyen, Pranit S. Metkar, Anthony S. Dearth
  • Publication number: 20190389826
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Inventors: Pranit S. METKAR, Ronnie OZER, Bhuma RAJAGOPALAN
  • Patent number: 10457657
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: October 29, 2019
    Assignees: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC, ARCHER DANIELS MIDLAND COMPANY
    Inventors: Pranit S. Metkar, Ronnie Ozer, Bhuma Rajagopalan
  • Publication number: 20190300494
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: PRANIT S METKAR, Ronnie Ozer, Bhuma Rajagopalan
  • Publication number: 20190119238
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Application
    Filed: December 21, 2018
    Publication date: April 25, 2019
    Inventors: PRANIT S. METKAR, Ronnie Ozer, Bhuma Rajagopalan
  • Publication number: 20190084952
    Abstract: Disclosed herein are processes for producing 2,5-furandicarboxylic acid dialkyl ester. In one embodiment, the process comprises a) contacting 2,5-furan dicarboxylic acid, excess alcohol, and optionally, a catalyst in a reactor at a temperature in the range of from 50° C. to 325° C. and a pressure in the range of between 1 bar to 140 bar to form a liquid phase composition comprising an ester of 2,5-furan dicarboxylic acid, the alcohol and water; b) lowering the temperature of the liquid phase composition to form a crude crystallized ester of 2,5-furan dicarboxylic acid; c) separating the product of step b) to form a solids phase comprising a purified ester of 2,5-furan dicarboxylic acid and a mother liquor comprising alcohol and water; and d) removing at least a portion of the water from the mother liquor. In one embodiment, the 2,5-furan dicarboxylic acid is contacted with an alcohol source and optionally, a catalyst.
    Type: Application
    Filed: July 21, 2016
    Publication date: March 21, 2019
    Inventors: Pranit S. Metkar, Ronnie Ozer, Eric R. Sacia
  • Publication number: 20190047973
    Abstract: A process for producing furan dicarboxylic acid or an ester thereof from a feedstock comprising hydroxymethyl furfural (HMF) and humins is disclosed. Humins are a byproduct from reactions forming HMF from sugars and are typically removed from the HMF prior to any further processing. A humins-containing HMF feedstock is utilized to produce furan dicarboxylic acids and ester substantially free from humins.
    Type: Application
    Filed: October 15, 2018
    Publication date: February 14, 2019
    Inventors: Pranit S. METKAR, Ronnie Ozer, Bhuma Rajagopalan
  • Publication number: 20190031634
    Abstract: Disclosed are processes for producing the dialkyl ester of 2,5-furan dicarboxylic acid by contacting a feed containing 2,5-furan dicarboxylic acid and a high boiling solvent with an alcohol in the presence of a solid acid catalyst using reactive distillation.
    Type: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: Pranit S. Metkar, Sourav Kumar Sengupta
  • Publication number: 20190031633
    Abstract: Processes for preparing a dialkyl ester of 2,5-furan dicarboxylic acid are disclosed. The processes comprise contacting 2,5-furan dicarboxylic acid with excess alcohol and, optionally, a catalyst at a pressure in the range of between 1 bar and 21 bar and a temperature in the range of from 65° C. to 325° C. to form a vapor reaction product comprising an ester of 2,5-furan dicarboxylic acid, the alcohol and water; and distilling the vapor reaction product at a pressure in the range of from 0 bar to 3.5 bar at a temperature in the range of from 38° C. to 204° C. to separate the water and alcohol from the ester of 2,5-furan dicarboxylic acid.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 31, 2019
    Inventors: Judy H. Cipot-Wechsler, Pranit S. Metkar, Ronnie Ozer