Patents by Inventor Petr Sladek

Petr Sladek 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: 11465956
    Abstract: A process for producing a reaction mixture comprising a plurality of C3 chlorinated alkane isomers comprising chlorinating a C3 chlorinated alkane starting material in a chlorination zone to produce the plurality of C3 chlorinated alkane isomers, the plurality of C3 chlorinated alkane isomers each having at least one more chlorine atom than the C3 chlorinated alkane starting material, wherein the concentration of the C3 chlorinated alkane starting material is controlled such that conversion of the C3 chlorinated alkane starting material to the plurality of C3 chlorinated alkane isomers, represented by the molar ratio of the C3 chlorinated alkane starting material:C3 chlorinated alkane isomers in the reaction mixture present in the chlorination zone, does not exceed about 40:60.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: October 11, 2022
    Assignee: SPOLCHEMIE ZEBRA, A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Petr Sladek
  • Patent number: 11325876
    Abstract: Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: a) the concentration of the chlorinated C3-6 alkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated C3-6 alkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: May 10, 2022
    Assignee: SPOLCHEMIE ZEBRA, A.S.
    Inventors: Karel Filas, Pavel Kubicek, Zdenek Ondrus, Petr Sladek
  • Publication number: 20210188742
    Abstract: Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: a) the concentration of the chlorinated C3-6 alkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated C3-6 alkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed
    Type: Application
    Filed: February 11, 2021
    Publication date: June 24, 2021
    Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Karel Filas, Pavel Kubicek, Zdenek Ondrus, Petr Sladek
  • Publication number: 20210171425
    Abstract: Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.
    Type: Application
    Filed: February 10, 2021
    Publication date: June 10, 2021
    Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek ONDRUS, Pavel KUBICEK, Karel FILAS, Petr SLADEK
  • Publication number: 20210070680
    Abstract: A process for producing a reaction mixture comprising a plurality of C3 chlorinated alkane isomers comprising chlorinating a C3 chlorinated alkane starting material in a chlorination zone to produce the plurality of C3 chlorinated alkane isomers, the plurality of C3 chlorinated alkane isomers each having at least one more chlorine atom than the C3 chlorinated alkane starting material, wherein the concentration of the C3 chlorinated alkane starting material is controlled such that conversion of the C3 chlorinated alkane starting material to the plurality of C3 chlorinated alkane isomers, represented by the molar ratio of the C3 chlorinated alkane starting material:C3 chlorinated alkane isomers in the reaction mixture present in the chlorination zone, does not exceed about 40:60.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Petr Sladek
  • Patent number: 10934234
    Abstract: Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: March 2, 2021
    Assignee: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Karel Filas, Petr Sladek
  • Patent number: 10934232
    Abstract: Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: a) the concentration of the chlorinated C3-6 alkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated C3-6 alkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: March 2, 2021
    Assignee: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Karel Filas, Pavel Kubicek, Zdenek Ondrus, Petr Sladek
  • Publication number: 20200392056
    Abstract: Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.
    Type: Application
    Filed: August 27, 2020
    Publication date: December 17, 2020
    Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek ONDRUS, Pavel KUBICEK, Karel FILAS, Petr SLADEK
  • Patent number: 10851033
    Abstract: A process for producing a reaction mixture comprising a plurality of C3 chlorinated alkane isomers comprising chlorinating a C3 chlorinated alkane starting material in a chlorination zone to produce the plurality of C3 chlorinated alkane isomers, the plurality of C3 chlorinated alkane isomers each having at least one more chlorine atom than the C3 chlorinated alkane starting material, wherein the concentration of the C3 chlorinated alkane starting material is controlled such that conversion of the C3 chlorinated alkane starting material to the plurality of C3 chlorinated alkane isomers, represented by the molar ratio of the C3 chlorinated alkane starting material:C3 chlorinated alkane isomers in the reaction mixture present in the chlorination zone, does not exceed about 40:60.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: December 1, 2020
    Assignee: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Petr Sladek
  • Patent number: 10766838
    Abstract: Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: September 8, 2020
    Assignee: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Karel Filas, Petr Sladek
  • Patent number: 10611707
    Abstract: Disclosed is a process for preparing a highly pure 1,1,1,2,3-pentachloropropane product, comprising 1-a) providing a reaction mixture comprising ethylene, carbon tetrachloride and a catalyst in a principal alkylation zone to produce 1,1,1,3-tetrachloropropane in the reaction mixture, and 1-b) treating the reaction mixture obtained in step 1-a) to obtain a 1,1,1,3-tetrachloropropane feedstock; 2-a) contacting the 1,1,1,3-tetrachloropropane feedstock with a catalyst in a dehydrochlorination zone to produce a reaction mixture comprising 1,1,1,3-tetrachloropropane and 1,1,3-trichloropropene, and 2-b) treating the reaction mixture obtained in step 2-a) to obtain a 1,1,3-trichloropropene feedstock; 3-a) contacting the 1,1,3-trichloropropene feedstock with chlorine in a reaction zone to produce a reaction mixture containing 1,1,1,2,3-pentachloropropane and 1,1,3-trichloropropene, the reaction zone being different from the dehydrochlorination zone, and 3-b) treating the reaction mixture obtained in step 3-a) to ob
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: April 7, 2020
    Assignee: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Karel Filas, Petr Sladek
  • Publication number: 20190352241
    Abstract: Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.
    Type: Application
    Filed: September 19, 2017
    Publication date: November 21, 2019
    Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek ONDRUS, Pavel KUBICEK, Karel FILAS, Petr SLADEK
  • Patent number: 10479744
    Abstract: Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: November 19, 2019
    Assignee: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Karel Filas, Petr Sladek
  • Publication number: 20190276379
    Abstract: Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.
    Type: Application
    Filed: March 18, 2019
    Publication date: September 12, 2019
    Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek ONDRUS, Pavel KUBICEK, Karel FILAS, Petr SLADEK
  • Patent number: 10370312
    Abstract: Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 6, 2019
    Assignee: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Karel Filas, Petr Sladek
  • Publication number: 20190233352
    Abstract: Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: a) the concentration of the chlorinated C3-6 alkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated C3-6 alkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed
    Type: Application
    Filed: April 4, 2019
    Publication date: August 1, 2019
    Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Karel FILAS, Pavel KUBICEK, Zdenek ONDRUS, Petr SLADEK
  • Patent number: 10294179
    Abstract: Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: a) the concentration of the chlorinated C3-6 alkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated C3-6 alkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed b
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: May 21, 2019
    Assignee: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Karel Filas, Pavel Kubicek, Zdenek Ondrus, Petr Sladek
  • Publication number: 20190135717
    Abstract: Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.
    Type: Application
    Filed: December 25, 2018
    Publication date: May 9, 2019
    Applicant: SPOLEK PRO CHEMICKOU A HUTNI VYROBU A.S.
    Inventors: Zdenek ONDRUS, Pavel Kubicek, Karel Filas, Petr Sladek
  • Publication number: 20190127303
    Abstract: The present invention provides a process of manufacture of 2,3,3,3-tetrafluoropropene by fluorination of very high purity 1,1,1,2,3-pentachloropropane (HCC-240db) into product 2,3,3,3-tetrafluoropropene (HFO-1234yf), the process comprising the following steps: —step 3 of chlorination of 1,1,3-trichloropropene to produce 1,1,1,2,3-pentachloropropane, comprising: 3-a) contacting the 1,1,3-trichloropropene feedstock with chlorine in a reaction zone to produce a reaction mixture containing 1,1,1,2,3-pentachloropropane and 1,1,3-trichloropropene, the reaction zone being different from the dehydrochlorination zone, and 3-b) treating the reaction mixture obtained in step 3-a) to obtain a 1,1,1,2,3-pentachloropropane (HCC-240db) feedstock; —step 4 of producing 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprising: 4-a) reacting the 1,1,1,2,3-pentachloropropane (HCC-240db) feedstock with HF in the presence or absence of catalyst to produce a reaction mixture comprising at least one compound chosen from HCI, HF, 1,1,1,2,
    Type: Application
    Filed: April 13, 2016
    Publication date: May 2, 2019
    Applicant: Arkema France
    Inventors: Zdenek ONDRUS, Pavel KUBICEK, Karel FILAS, Petr SLADEK, Dominique DEUR-BERT, Laurent WENDLINGER
  • Patent number: 10189759
    Abstract: Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 29, 2019
    Assignee: SPOLEK PRO CHEMICKOU A HUNTI VYROBU A.S.
    Inventors: Zdenek Ondrus, Pavel Kubicek, Karel Filas, Petr Sladek