Patents by Inventor Maher Y. Elsheikh

Maher Y. Elsheikh 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).

  • Publication number: 20140171698
    Abstract: The invention also relates a process for the manufacture of trans 1-chloro 3,3,3-trifluoropropene. The process comprises an isomerization step from cis 1233zd to trans 1233zd.
    Type: Application
    Filed: February 19, 2014
    Publication date: June 19, 2014
    Applicant: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Anne Pigamo, Sri R. Seshadri
  • Publication number: 20140166922
    Abstract: Disclosed is a combination of hydrofluoroolefins and/or hydrochlorofluoroolefins with stabilizers wherein the stabilizers minimize the degradation of the hydrofluoroolefins and hydrochlorofluoroolefins during storage, handling and use yet allow for atmospheric degradation. The combinations exhibit low or zero ozone depletion potential and lower global warming potential making them of interest as replacements for chlorofluorocarbons and hydrofluorocarbons. The combinations of the present invention comprise hydrofluoroolefins and/or hydrochlorofluoroolefins in combination with a stabilizer or stabilizers selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and combinations thereof.
    Type: Application
    Filed: February 19, 2014
    Publication date: June 19, 2014
    Applicant: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Benjamin Bin Chen, Brett L. Van Horn, Laurent Abbas, Sri Seshadri
  • Publication number: 20140103248
    Abstract: The present invention relates to formulated refrigerant systems of 1-chloro-3,3,3-trifluoropropene (R-1233zd) that are sufficiently thermally and chemically stable such that they can be effectively used sans additional stabilizers. The formulations of the present invention are particularly useful compositions for refrigeration, heat transfer and foam blowing.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: Arkema Inc.
    Inventors: Brett L. VAN HORN, Maher Y. ELSHEIKH, Benjamin Bin CHEN, Philippe BONNET
  • Patent number: 8691107
    Abstract: Disclosed is a combination of hydrofluoroolefins and/or hydrochlorofluoroolefins with stabilizers wherein the stabilizers minimize the degradation of the hydrofluoroolefins and hydrochlorofluoroolefins during storage, handling and use yet allow for atmospheric degradation. The combinations exhibit low or zero ozone depletion potential and lower global warming potential making them of interest as replacements for chlorofluorocarbons and hydrfluorocarbons. The combinations of the present invention comprise hydrofluoroolefins and/or hydrochlorofluoroolefins in combination with a stabilizer or stabilizers selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and combinations thereof.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: April 8, 2014
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Brett L. Van Horn, Philippe Bonnet, Benjamin Bin Chen
  • Publication number: 20140057826
    Abstract: The present invention relates to solvent/cleaner and heat transfer fluid compositions comprising at least one hydrochlorofluoroolefin (HCFO), 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), particularly the trans-isomer. The HCFO of the present invention can be used in combination with co-agents including, hydrofluorocarbons (HFCs), hydrofluomolefins (HFOs), hydrocarbons, ethers including hydrofluoroethers (HFEs), esters, ketones, alcohols, 1,2-transdichloroethylene and mixtures thereof.
    Type: Application
    Filed: February 21, 2013
    Publication date: February 27, 2014
    Applicant: Arkema Inc.
    Inventors: Benjamin Bin Chen, Philippe Bonnet, Maher Y. Elsheikh, Brett L. Van Horn, Laurent Abbas
  • Patent number: 8648123
    Abstract: The present invention relates to blowing agent compositions comprising the unsaturated halogenated hydroolefin 3,3,3-trifluoropropene (HFO 1243zf) and combinations including primarily 3,3,3-trifluoropropene (HFO 1243zf). The blowing agent compositions are useful in that they provide sufficient plasticization to permit the production of low density insulating thermoplastic foams with improved k-factor.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: February 11, 2014
    Assignee: Arkema Inc.
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
  • Patent number: 8642819
    Abstract: The present invention provides a process for the manufacture of trans 1-chloro-3,3,3-trifluoropropene (E-1233zd). The first step of the process comprises the fluorination of 1,1,3,3-tetrachlororopropene (1230za, CCh?CH—CHCh) and/or 1,1,1,3,3-pentaachloropropane (240fa) to a mixture of cis 1233zd (Z-1233zd) and trans 1233zd (E-1233zd). The second step of the process comprises a separation of the mixture formed in the first step to isolate cis 1233zd (Z-1233zd) from the mixture. The third step of the process comprises isomerization of cis 1233zd (Z-1233zd) to trans 1233zd (E-1233zd).
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: February 4, 2014
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, John A. Wismer
  • Patent number: 8642818
    Abstract: The invention relates to a process for manufacturing 1,1,1,2-tetrafluoropropene (1234yf, CF3—CF?CH2) from 1,1,3,3-tetrachlororopropene (1230za, CCl2?CH—CHCl2) and/or 1,1,1,3,3-pentachloropropane (240fa, CCl3CH2CHCl2). The process comprises an isomerization step of 1-chloro-3,3,3 trifluoropropene (1233zd, CF3—CH?CHCl) to 2-chloro-3,3,3 trifluoropropene (1233xf or CF3—CCl?CH2).
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: February 4, 2014
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, John A. Wismer
  • Publication number: 20140031442
    Abstract: The present invention relates to foam products made with blowing agent compositions comprising at least one hydrochlorofluoroolefin (HCFO) used in the preparation of Namable thermoplastic compositions. The HCFOs of the present invention include, but are not limited to, 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), particularly the trans-isomer, 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), dichloro-fluorinated propenes, and mixtures thereof. The blowing agent compositions of the present invention are used with coblowing agents including carbon dioxide, atmospheric gases, hydrofluorocarbons (HFC), hydrofluoroolefins (HFO), alkanes, hydrofluoroethers (HFE), and mixtures thereof. Preferred HFCs used as coblowing agents in the present invention include, but are not limited too, 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1-difluoroethane (HFC-152a), 1,1,1-trifluoroethane (HFC-143a), pentafluorethane (HFC-125), difluoromethane (HFC-32).
    Type: Application
    Filed: October 3, 2013
    Publication date: January 30, 2014
    Applicant: Arkema Inc.
    Inventors: Brett L. VAN HORN, Maher Y. ELSHEIKH, Benjamin Bin CHEN, Philippe BONNET
  • Patent number: 8618338
    Abstract: In this invention we are disclosing a process for the synthesis of hydrocchlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the gas phase, noncatalytic fluorination of hydrochlorofluoropropenes to form hydrofluoropropenes.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: December 31, 2013
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Publication number: 20130296617
    Abstract: Disclosed are the combinations containing Z and E stereoisomers of hydrofluoroolefins where the more toxic isomer is less than about 30% weight of the combination (vs the sum of Z+E), to minimize the toxicity impact in the applications they will. be used for such as cooling and heat fluids, foams blowing agents or solvents. Also disclosed are means to obtain combinations containing Z and E stereoisomers of hydrofluoroolefins.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 7, 2013
    Applicant: Arkema Inc.
    Inventors: Philippe Bonnet, Maher Y. Elsheikh
  • Publication number: 20130281557
    Abstract: The present invention relates to blowing agent compositions comprising (1) at least one hydrofluoroolefin (HFO) and (2) at least one hydrochlorofluoroolefin (HCFO) used in the preparation of foamable thermoplastic compositions. The HFOs of component (1) include, but are not limited too, 3,3,3-trifluoropropene (HFO-1243zf), 1,2,3,3,3-pentafluoropropene (HFO-1225ye), cis- and/or trans-1,3,3,3-tetrafluoropropene (HFO-1234ze), and 2,3,3,3-tetrafluoropropene (HFO 1234yf), and mixtures thereof. The HCFOs of component (2) include, but are not limited to, 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and mixtures thereof. The blowing agent compositions are useful in the production of low density insulating foams with improved k-factor.
    Type: Application
    Filed: June 11, 2013
    Publication date: October 24, 2013
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
  • Patent number: 8563789
    Abstract: In this invention we are disclosing a process for the synthesis of hydrocchlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the steps of fluorination of hydrochloropropenes or hydrochloropropanes to form hydrochlorofluoropropenes and/or hydrofluoropropenes, followed by gas phase, catalytic fluorination of the hydrochlorofluoropropenes to form hydrofluoropropenes.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: October 22, 2013
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Publication number: 20130246288
    Abstract: The invention relates to heat transfer agents and heat transfer compositions containing hydrocarbon lubricating oils and halogenated alkene heat transfer fluid that promote oil flow and provide for improved oil return. The heat transfer compositions are useful in various heat transfer systems such as refrigeration, cooling, air conditioning, chiller operations.
    Type: Application
    Filed: April 30, 2013
    Publication date: September 19, 2013
    Applicant: Arkema Inc.
    Inventors: Brett L. Van Horn, Phillippe Bonnet, Benjamin Bin Chen, Maher Y. Elsheikh, Richard M. Crooker
  • Patent number: 8454853
    Abstract: The invention relates to heat transfer agents and heat transfer compositions containing hydrocarbon lubricating oils and halogentaed alkene heat transfer fluid that promote oil flow and provide for improved oil return. The heat transfer compositions are useful in various heat transfer systems such as refrigeration, cooling, air conditioning, chiller operations.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: June 4, 2013
    Assignee: Arkema Inc.
    Inventors: Brett L. Van Horn, Philippe Bonnet, Benjamin Bin Chen, Maher Y. Elsheikh, Richard M. Crooker
  • Patent number: 8445736
    Abstract: A one reactor, gas phase catalyzed process for the fluorination of 1,1,2,3-tetrachloropropene (1230xa) to produce 1,1,1,2-tetrafluoropropene (1234yf) is disclosed. The process of the present invention is a catalytic, gas phase fluorination using a high pressure activated catalyst which is supported or unsupported. Fluorination products of the formula CF3R, where R is selected from —CCl?CH2, —CF?CH2, —CF2—CH3, —CFCl—CH3 and mixtures thereof are produced. Co-produced materials are separated from the desired product and recycled to the same reactor.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: May 21, 2013
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet
  • Publication number: 20130119300
    Abstract: The present invention relates to formulated refrigerant systems of 1-chloro-3,3,3-trifluoropropene (R-1233zd) that are sufficiently thermally and chemically stable such that they can be effectively used sans additional stabilizers. The formulations of the present invention are particularly useful compositions for refrigeration, heat transfer.
    Type: Application
    Filed: January 10, 2013
    Publication date: May 16, 2013
    Applicant: Arkema Inc.
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
  • Publication number: 20130060069
    Abstract: A method for producing a tetrafluoroolefin, such as 2,3,3,3-tetrafluoropropene (HFO-123434), comprises dehydrofluorinating a pentafluoroalkane in a gas phase in the presence of a catalyst comprising chromium oxyfluoride. In a preferred embodiment, 2,3,3,3-tetrafluoropropene (HFO-1234yf) is produced by forming a catalyst comprising chromium oxyfluoride by calcining CrF3?xH2O, where x is 1-10, in the presence of a flowing gas comprising nitrogen to form a calcined chromium oxyfluoride, and dehydrofluorinating 1,1,1,2,2-pentafluoropropane (HFC-245cb) in a gas phase in the presence of the catalyst to form the 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Application
    Filed: May 3, 2011
    Publication date: March 7, 2013
    Applicant: ARKEMA INC.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Olga C.N. Keeley, Benjamin Bin Chen
  • Patent number: 8388857
    Abstract: Disclosed is a combination of hydrofluoroolefins and/or hydrochlorofluoroolefins with stabilizers wherein the stabilizers minimize the degradation of the hydrofluoroolefins and hydrochlorofluoroolefins during storage, handling and use yet allow for atmospheric degradation. The combinations exhibit low or zero ozone depletion potential and lower global warming potential making them of interest as replacements for chlorofluorocarbons and hydrfluorocarbons. The combinations of the present invention comprise hydrofluoroolefins and/or hydrochlorofluoroolefins in combination with a stabilizer or stabilizers selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and combinations thereof.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: March 5, 2013
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen, Brett L. Van Horn
  • Publication number: 20130035410
    Abstract: A blowing agent for thermosetting foams is disclosed. The blowing agent is predominately the trans isomer of the hydrochlorofluoroolefin (HCFO) HFCO-1233zd alone or in combination with a hydrofluoroolefin (HFO), hydrofluorocarbon (HFC), hydrochlorofluoroolefin (HCFO), a hydrocarbon. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.
    Type: Application
    Filed: October 11, 2012
    Publication date: February 7, 2013
    Applicant: Arkema Inc.
    Inventors: Benjamin Bin Chen, Maher Y. Elsheikh, Philippe Bonnet, Brett L. Van Horn, Joseph S. Costa