Patents by Inventor Konstantin A. Pokrovski

Konstantin A. Pokrovski 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: 11447457
    Abstract: Disclosed are methods for treating an ethylene oxide stream suitable for use in carbonylation reactions. Such treatment uses an inorganic solid to remove water from the ethylene oxide stream. Discloses are also systems to carry out the methods herein.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: September 20, 2022
    Assignee: Novomer, Inc.
    Inventors: Konstantin A. Pokrovski, John B. Ruhl, Alexander Tseitlin, Kyle Sherry
  • Patent number: 10662139
    Abstract: Provided herein are methods of producing acrylic acid from bPL. Such methods involve the use of a heterogeneous catalyst, such as a zeolite at vapor phase conditions. The method may use a fixed bed, moving bed or fluidized contacting zone as the reactor configurations.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: May 26, 2020
    Assignee: Novomer, Inc.
    Inventors: Sadesh H Sookraj, Alexander Tseitlin, Konstantin A. Pokrovski, Waheed Mukaddam
  • Publication number: 20200061578
    Abstract: Provided herein are absorbent polymers produced from beta-propiolactone, and methods of producing such polymers. These absorbent polymer may be cross-linked. The beta-propiolactone may be derived from ethylene oxide and carbon monoxide. The absorbent polymer may be bio-based and/or bio-degradable. The absorbent polymers may be used for diapers, adult incontinence products, and feminine hygiene products, as well as for agricultural applications.
    Type: Application
    Filed: October 31, 2017
    Publication date: February 27, 2020
    Applicant: Novomer, Inc.
    Inventors: Sadesh H. SOOKRAJ, Alexander TSEITLIN, Han LEE, Konstantin A. POKROVSKI
  • Publication number: 20190359581
    Abstract: Disclosed are methods for treating an ethylene oxide stream suitable for use in carbonylation reactions. Such treatment uses an inorganic solid to remove water from the ethylene oxide stream. Discloses are also systems to carry out the methods herein.
    Type: Application
    Filed: January 18, 2018
    Publication date: November 28, 2019
    Applicant: Novomer, Inc.
    Inventors: Konstantin A. POKROVSKI, John B. RUHL, Alexander TSEITLIN, Kyle SHERRY
  • Publication number: 20190177252
    Abstract: Disclosed are processes for a high temperature isomerization reaction converting (E)-1-chloro-3,3,3-trifluoropropene to (Z)-1-chloro-3,3,3-trifluoropropene. In certain aspects of the invention, such a process includes contacting a feed stream with a heated surface, where the feed stream includes (E)-1-chloro-3,3,3-trifluoropropene or mixture of (E)-1-chloro-3,3,3-trifluoropropene with (Z)-1-chloro-3,3,3-trifluoropropene. The resulting product stream includes (Z)-1-chloro-3,3,3-trifluoropropene and (E)-1-chloro-3,3,3-trifluoropropene, where the ratio of (Z) isomer to (E) isomer in the product stream is higher than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another.
    Type: Application
    Filed: June 11, 2018
    Publication date: June 13, 2019
    Inventors: Konstantin A. Pokrovski, Daniel C. Merkel, Hsueh S. Tung
  • Patent number: 10259760
    Abstract: Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: April 16, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Hang T. Pham, Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh S. Tung, Rajiv R. Singh
  • Patent number: 10207972
    Abstract: Provided are azeotropic or azeotrope-like mixtures of 1,3,3,3-tetrachloroprop-1-ene (HCO-1230zd) and hydrogen fluoride. Such compositions are useful as a feed stock in the production of HFC245fa and HCFO1233zd.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: February 19, 2019
    Assignee: Honeywell international Inc.
    Inventors: Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh Sung Tung, Haiyou Wang, Ryan Hulse
  • Patent number: 10155706
    Abstract: The instant invention relates to a process and method for manufacturing 2,3,3,3-tetrafluoropropene by dehydrohalogenating a reactant stream of 2-chloro-1,1,1,2-tetrafluoropropane that is substantially free from impurities, particularly halogenated propanes, propenes, and propynes.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: December 18, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh S. Tung, Haiyou Wang
  • Patent number: 10125068
    Abstract: The instant invention relates to a process and method for manufacturing 2,3,3,3-tetrafluoropropene by dehydrohalogenating a reactant stream of 2-chloro-1,1,1,2-tetrafluoropropane that is substantially free from impurities, particularly halogenated propanes, propenes, and propynes.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: November 13, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh S. Tung, Haiyou Wang
  • Patent number: 10011546
    Abstract: Provided are azeotropic or azeotrope-like mixtures of 1,1,3,3-tetrachloroprop-1-ene (HCO-1230za) and hydrogen fluoride. Such compositions are useful as feed stock in the production of HFC-245fa and HCFO-1233zd.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: July 3, 2018
    Assignee: Honeywell International Inc.
    Inventors: Daniel C. Merkel, Hsueh Sung Tung, Konstantin A. Pokrovski, Haiyou Wang, Stephen A. Cottrell, Hang T. Pham
  • Patent number: 9994504
    Abstract: Disclosed are processes for a high temperature isomerization reaction converting (E)-1-chloro-3,3,3-trifluoropropene to (Z)-1-chloro-3,3,3-trifluoropropene. In certain aspects of the invention, such a process includes contacting a feed stream with a heated surface, where the feed stream includes (E)-1-chloro-3,3,3-trifluoropropene or mixture of (E)-1-chloro-3,3,3-trifluoropropene with (Z)-1-chloro-3,3,3-trifluoropropene. The resulting product stream includes (Z)-1-chloro-3,3,3-trifluoropropene and (E)-1-chloro-3,3,3-trifluoropropene, where the ratio of (Z) isomer to (E) isomer in the product stream is higher than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: June 12, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Konstantin A. Pokrovski, Daniel C. Merkel, Hsueh S. Tung
  • Patent number: 9950974
    Abstract: Azeotropic or azeotrope-like mixtures of 1,3,3-trichloro-3-fluoroprop-1-ene (HCFO-1231zd) and hydrogen fluoride (HF). Such compositions are useful as a feed stock or intermediate in the production of 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), and 1,3,3,3-tetrafluoropropene (HFO-1234ze).
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: April 24, 2018
    Assignee: Honeywell International Inc.
    Inventors: Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh Sung Tung, Haiyou Wang, Ryan J. Hulse, Hang T. Pham
  • Patent number: 9950973
    Abstract: Azeotropic or azeotrope-like mixtures of 1,3-dichloro-3,3-difluoroprop-1-ene (HCFO-1232zd) and hydrogen fluoride (HF). Such compositions are useful as a feed stock or intermediate in the production of 1,1,1,3,3-pentafluoropropane (HFC-245fa),1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), and 1,3,3,3-tetrafluoropropene (HFO-1234ze).
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: April 24, 2018
    Assignee: Honeywell International Inc.
    Inventors: Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh Sung Tung, Haiyou Wang, Ryan J. Hulse, Hang T. Pham
  • Patent number: 9938212
    Abstract: Disclosed is an integrated manufacturing process to co-produce (E) 1-chloro-3,3,3-trifluoropropene, (E) 1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoro-propane starting from a single starting feed material or a mixture of unsaturated hydrochlorocarbon feed materials comprising 1,1,1,3-tetrachloropropene and/or 1,1,3,3-tetrachloropropene. The process includes a combined liquid or vapor phase reaction/purification operation which directly produces (E) 1-chloro-3,3,3-trifluoro-propene (1233zd (E)) from these feed materials, which may also include 240fa. In the second liquid phase fluorination reactor 1233zd (E) is contacted with HF in the presence of catalyst to produce 1,1,1,3,3-pentafluoropropane (245fa) with high conversion and selectivity. A third reactor is used for dehydrofluorination of 245fa to produce (E) 1,3,3,3-tetrafluoropropene (1234ze (E)) by contacting in the liquid phase with a caustic solution or in the vapor phase using a dehydrofluorination catalyst.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: April 10, 2018
    Assignee: Honeywell International Inc.
    Inventors: Konstantin A. Pokrovski, Daniel C. Merkel, Haiyou Wang, Hsueh Sung Tung
  • Publication number: 20180057430
    Abstract: Azeotropic or azeotrope-like mixtures of 1,3-dichloro-3,3-difluoroprop-1-ene (HCFO-1232zd) and hydrogen fluoride (HF). Such compositions are useful as a feed stock or intermediate in the production of 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), and 1,3,3,3-tetrafluoropropene (HFO-1234ze).
    Type: Application
    Filed: August 31, 2016
    Publication date: March 1, 2018
    Inventors: Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh Sung Tung, Haiyou Wang, Ryan J. Hulse, Hang T. Pham
  • Publication number: 20180056210
    Abstract: A method for separating halocarbons and, in particular, a method for separating (Z)-1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(Z), or simply 1233zd(Z)) and 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa, or simply 244fa) via distillation by adding a third component, hydrogen fluoride (HF), forming a binary azeotrope of 1233zd(Z) and HF. The binary 1233zd(Z)/HF azeotrope may then be recovered from the distillation column as an overhead stream which includes only a relatively minor amount of 244fa, while the 244fa may be recovered from the distillation column as a bottoms stream which includes only relatively minor amounts of 1233zd(Z) and HF.
    Type: Application
    Filed: August 28, 2017
    Publication date: March 1, 2018
    Inventors: Konstantin A. Pokrovski, Daniel C. Merkel, Rajat S. Basu, Hsueh Sung Tung
  • Publication number: 20180057433
    Abstract: Azeotropic or azeotrope-like mixtures of 1,3,3-trichloro-3-fluoroprop-1-ene (HCFO-1231zd) and hydrogen fluoride (HF). Such compositions are useful as a feed stock or intermediate in the production of 1,1,1,3,3-pentafluoropropane (HFC-245fa),1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), and 1,3,3,3-tetrafluoropropene (HFO-1234ze).
    Type: Application
    Filed: August 31, 2016
    Publication date: March 1, 2018
    Inventors: Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh Sung Tung, Haiyou Wang, Ryan J. Hulse, Hang T. Pham
  • Patent number: 9862662
    Abstract: The present invention discloses high purity E-1-chloro-3,3,3-trifluoropropene (1233zd(E)) and methods to produce the same. More specifically, the present invention discloses the methods of making 1233zd(E) essentially free of toxic impurities (e.g. 2-chloro-3,3,3-trifluoropropene (1233xf), chlorotetrafluoro-propene (1224), and 3,3,3-trifluoropropyne). The present invention further provides methods for making high purity 1233zd(E) with concentration of 1233xf and 1224 at or below 200 parts per million (ppm) and 3,3,3-trifluoropropyne impurities at or below 20 ppm. Formation of 1233xf impurity can be avoided if pure 1,1,1,3,3-pentachloropropane is used as a starting material. It was also found that formation of 1233xf is avoided if a liquid phase manufacturing process is used.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: January 9, 2018
    Assignee: Honeywell International Inc.
    Inventors: Konstantin A. Pokrovski, Rajiv Ratna Singh, Ian Shankland, Hsueh Sung Tung
  • Publication number: 20170313639
    Abstract: The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation.
    Type: Application
    Filed: July 20, 2017
    Publication date: November 2, 2017
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Haiyou WANG, Selma BEKTESEVIC, Daniel C. MERKEL, Hsueh SUNG TUNG, Konstantin A. POKROVSKI
  • Publication number: 20170267618
    Abstract: Provided herein are methods of producing acrylic acid from bPL. Such methods involve the use of a heterogeneous catalyst, such as a zeolite at vapor phase conditions. The method may use a fixed bed, moving bed or fluidized contacting zone as the reactor configurations.
    Type: Application
    Filed: March 21, 2017
    Publication date: September 21, 2017
    Inventors: Sadesh H. Sookraj, Alexander Tseitlin, Konstantin A. Pokrovski, Waheed Mukaddam