Patents by Inventor Sadesh H Sookraj

Sadesh H Sookraj 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: 11827590
    Abstract: Provided herein are methods of producing acrylic acid from beta-propiolactone. Such methods may involve the use of a heterogeneous catalyst, such as a zeolite.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: November 28, 2023
    Assignee: Novomer, Inc.
    Inventors: Sadesh H. Sookraj, Alexander Tseitlin
  • Patent number: 11814360
    Abstract: The present invention is directed to processes for producing isocyanates and isocyanate derivatives from epoxide and carbon monoxide reagents. In preferred embodiments, the processes include a step for providing carbonylation of an epoxide reagent with a carbon monoxide reagent to produce a beta-lactone intermediate. In certain preferred embodiments, further carbonylation of a beta-lactone intermediate produces a succinic anhydride intermediate. The processes of the present invention include steps for rearranging beta-lactone intermediates and/or succinic anhydride intermediates to produce isocyanate products and/or isocyanate derivatives. In certain preferred embodiments, the isocyanate products may be copolymerized with polyol oligomers to provide polyurethane products.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: November 14, 2023
    Assignee: Novomer, Inc.
    Inventors: Oleg Kulikov, Sadesh H. Sookraj, Utpal Mahendra Vakil, Matthew Goodrich
  • Patent number: 11807613
    Abstract: The integrated processes herein provide improved carbon efficiency for processes based on coal or biomass gasification or steam methane reforming. Provided are also ethylene oxide carbonylation products such as beta-propiolactone and succinic anhydride having a bio-based content between 0% and 100%, and methods for producing and analyzing the same.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: November 7, 2023
    Assignee: Novomer, Inc.
    Inventors: Sadesh H. Sookraj, Michael A. Slowik
  • Publication number: 20230340199
    Abstract: Provided are methods of producing polyamides from beta-lactones. The polyamides include bio-based polyamides that may be obtained, either in part or completely, from renewable sources.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 26, 2023
    Inventors: Han Lee, Sadesh H. Sookraj, Alexander Tseitlin
  • Patent number: 11718714
    Abstract: Provided are methods of producing polyamides from beta-lactones. The polyamides include bio-based polyamides that may be obtained, either in part or completely, from renewable sources.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: August 8, 2023
    Assignee: Novomer, Inc.
    Inventors: Han Lee, Sadesh H. Sookraj, Alexander Tseitlin
  • Patent number: 11685809
    Abstract: Provided are methods of producing sulfur- and phosphorus-containing polymers from beta-lactones. The sulfur- and phosphorus-containing polymers include bio-based sulfur- and phosphorus-containing polymers that may be obtained from renewable sources.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: June 27, 2023
    Assignee: Novomer, Inc.
    Inventors: Han Lee, Alexander Tseitlin, Sadesh H. Sookraj
  • Patent number: 11667617
    Abstract: The present invention provides novel solutions to the problem of recycling carbonylation catalysts in epoxide carbonylation processes. The inventive methods are characterized in that the catalyst is recovered in a form other than as active catalyst. In some embodiments, catalyst components are removed selectively from the carbonylation product stream in two or more processing steps. One or more of these separated catalyst components are then utilized to regenerate active catalyst which is utilized during another time interval to feed a continuous carbonylation reactor.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: June 6, 2023
    Assignee: Novomer, Inc.
    Inventor: Sadesh H. Sookraj
  • Patent number: 11655333
    Abstract: Provided herein are methods and systems for producing biodegradable beta-propiolactone-based polyester polymers from renewable EO and CO on an industrial scale.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: May 23, 2023
    Assignee: Novomer, Inc.
    Inventor: Sadesh H. Sookraj
  • Publication number: 20230085963
    Abstract: Provided are integrated processes for she conversion of ethylene oxide to polypropiolactone. Systems for the production of polypropiolactone are also provided.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 23, 2023
    Inventors: Jay J. Farmer, Peter Galebach, Kyle Sherry, Sadesh H. Sookraj
  • Publication number: 20230073343
    Abstract: Provided herein are integrated methods and systems for the production of acrylamide and acrylonitrile compounds and other compounds from at least beta-lactones and/or beta-hydroxy amides.
    Type: Application
    Filed: October 12, 2022
    Publication date: March 9, 2023
    Inventors: Eric Stoutenburg, Utpal Mahendra Vakil, Yuan Yan, Sadesh H. Sookraj
  • Patent number: 11498894
    Abstract: Provided herein are integrated methods and systems for the production of acrylamide and acrylonitrile compounds and other compounds from at least beta-lactones and/or beta-hydroxy amides.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: November 15, 2022
    Assignee: Novomer, Inc.
    Inventors: Eric Stoutenburg, Utpal Mahendra Vakil, Yuan Yan, Sadesh H. Sookraj
  • Patent number: 11492443
    Abstract: Provided are integrated processes for the conversion of ethylene oxide to polypropiolactone. System for the production of polypropiolactone are also provided.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: November 8, 2022
    Assignee: Novomer, Inc.
    Inventors: Jay J. Farmer, Peter Galebach, Kyle Sherry, Sadesh H. Sookraj
  • Patent number: 11420177
    Abstract: Disclosed herein is a method for converting an epoxide to a first C3 product, a second C3 product, and/or a first C4 product within an integrated system. The method includes converting the epoxide to a beta lactone to produce an outlet stream comprising beta lactone. The method includes converting the beta lactone of the outlet stream to a first C3 product in the first C3 reactor to produce an outlet stream comprising the first C3 product; converting the beta lactone to a second C3 product in the second C3 reactor to produce an outlet stream comprising the second C3 product, and/or converting the beta lactone to a first C4 product in the first C4 reactor to produce an outlet stream comprising the first C4 product.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: August 23, 2022
    Assignee: Novomer, Inc.
    Inventor: Sadesh H. Sookraj
  • Publication number: 20220251018
    Abstract: Provided herein are systems, and methods of using such systems, for producing acrylic acid from ethylene oxide and carbon monoxide on an industrial scale. The composition includes: polypropiolactone having a concentration of greater than at least 90 wt %; a residual cobalt or ions thereof from a carbonylation catalyst in an amount of 10 ppm or less; acetic acid in an amount of 10 ppm or less; and tetrahydrofuran in amount of 10 ppm or less.
    Type: Application
    Filed: April 22, 2022
    Publication date: August 11, 2022
    Inventors: Sadesh H. Sookraj, Jay J. Farmer
  • Patent number: 11401358
    Abstract: Disclosed are systems and methods for the production of polyacrylic acid and superabsorbent polymers from ethylene oxidation to form ethylene oxide. Reacting the ethylene oxide with carbon monoxide to form to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof. An outlet configured to provide a carbonylation stream comprising the BPL or PPL, or a combination thereof and using one or more reactors to convert BPL to acrylic acid or to convert at least some of the BPL to PPL, and then to convert PPL to acrylic acid. An outlet configured to provide a PPL stream to a second reactor tm to convert at least some of the PPL to AA or a third reactor to convert at least some of the PPL to AA. The outlet configured to provide an AA stream to a fourth reactor to convert the AA to polyacrylic acid.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: August 2, 2022
    Assignee: Novomer, Inc.
    Inventor: Sadesh H. Sookraj
  • Patent number: 11351519
    Abstract: Provided herein are absorbent polymers produced from beta-propiolactone, and methods and systems of producing such polymers. The beta-propiolactone may be derived from ethylene oxide and carbon monoxide. The absorbent polymer may be bio-based and/or biodegradable. The absorbent polymers may be used for diapers, adult incontinence products, and feminine hygiene products, as well as for agricultural applications.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: June 7, 2022
    Assignee: Novomer, Inc.
    Inventors: Han Lee, John B. Ruhl, Robert E. Lapointe, Kyle Sherry, Alexander Tseitlin, Sadesh H. Sookraj
  • Publication number: 20220041546
    Abstract: Provided herein are integrated methods and systems for the production of acrylamide and acrylonitrile compounds and other compounds from at least beta-lactones and/or beta-hydroxy amides.
    Type: Application
    Filed: February 28, 2020
    Publication date: February 10, 2022
    Inventors: Eric Stoutenburg, Utpal Mahendra Vakil, Yuan Yan, Sadesh H. Sookraj
  • Publication number: 20210403446
    Abstract: The integrated processes herein provide improved carbon efficiency for processes based on coal or biomass gasification or steam methane reforming. Provided are also ethylene oxide carbonylation products such as beta-propiolactone and succinic anhydride having a bio-based content between 0% and 100%, and methods for producing and analyzing the same.
    Type: Application
    Filed: July 28, 2021
    Publication date: December 30, 2021
    Inventors: Sadesh H. Sookraj, Michael A. Slowik
  • Patent number: 11155511
    Abstract: Provided are integrated processes for the conversion of beta propiolactone to acrylic acid. Systems for the production of acrylic acid are also provided.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: October 26, 2021
    Assignee: Novomer, Inc.
    Inventor: Sadesh H. Sookraj
  • Publication number: 20210277028
    Abstract: Provided herein are metal-organic frameworks having a repeating core structure that generally includes a linker coordinated to a secondary building unit through O-metal-O bonds. The linkers create a framework with a plurality of pores, where a cobalt carbonyl moiety occupies at least a portion of the plurality of pores. Provided are also methods of making such metal-organic frameworks via a solvothermal reaction. The metal-organic frameworks are suitable for use in carbonylation reactions, such as carbonylation of epoxides. The metal-organic frameworks may be used for producing acrylic acid from ethylene oxide and carbon monoxide on an industrial scale.
    Type: Application
    Filed: August 2, 2019
    Publication date: September 9, 2021
    Inventors: Sadesh H. Sookraj, Derek Williams