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: 20130035526
    Abstract: A method for producing a tetrafluoroolefin, such as 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprises contacting 1,1,1,2-tetrachloro-2-fluoropropane (HCFC-241bb) with or without a catalyst under conditions effective to convert the 1,1,1,2-tetrachloro-2-fluoropropane (HCFC-241bb) to the tetrafluoroolefin, optionally, via an intermediate. The conversion may be a one-step fluorination or a two-step fluorination and dehydrochlorination process. The 1,1,1,2-tetrachloro-2-fluoropropane (HCFC-241bb) may also be obtained by dehydrochlorinating 1,2,3-trichloropropane (HCC-260da) to form 2,3-dichloropropene (HCO-1250xf); fluorinating 2,3-dichloropropene (HCO-1250xf) to form 1,2-dichloro-2-fluoropropane (HCFC-261bb); and chlorinating 1,2-dichloro-2-fluoropropane (HCFC-261bb) to form 1,1,1,2-tetrachloro-2-fluoropropane (HCFC-241bb).
    Type: Application
    Filed: April 8, 2011
    Publication date: February 7, 2013
    Applicant: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Patent number: 8314159
    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: Grant
    Filed: March 28, 2008
    Date of Patent: November 20, 2012
    Assignee: Arkema Inc.
    Inventors: Benjamin Bin Chen, Maher Y. Elsheikh, Philippe Bonnet, Brett L. Van Horn, Joseph S. Costa
  • Publication number: 20120226081
    Abstract: The present invention is directed towards a method of purification of chloroolefins having 3 carbons and to a method to provide stable compositions of chloroolefins having 3 carbons. The chloroolefins are purified via the use of a solid absorbents for the removal of decomposition product such as phosgene and/or phosgene precursory from the reaction of the chloroolefins with oxygen. The chloroolefins stabilized against an increase of the phosgene level via the addition of inhibitors to the chloroolefins.
    Type: Application
    Filed: November 12, 2010
    Publication date: September 6, 2012
    Inventors: Maher Y. Elsheikh, Philippe Bonnet
  • Publication number: 20120108688
    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: Application
    Filed: January 3, 2012
    Publication date: May 3, 2012
    Applicant: Arkema Inc.
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
  • Publication number: 20120101177
    Abstract: The present invention relates to blowing agent compositions comprising at least one hydrochlorofluoroolefin (HCFO) used in the preparation of foamable 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: January 3, 2012
    Publication date: April 26, 2012
    Applicant: Arkema Inc.
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
  • Publication number: 20120078020
    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: Application
    Filed: November 16, 2011
    Publication date: March 29, 2012
    Applicant: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Publication number: 20120059202
    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: Application
    Filed: November 16, 2011
    Publication date: March 8, 2012
    Applicant: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Patent number: 8076521
    Abstract: In this invention we are disclosing a process for the synthesis of hydrochlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the following steps of liquid phase, noncatalytic fluorination of hydrochloropropenes to form hydrochlorofluoropropenes and/or hydrofluoropropenes, followed by gas phase, catalytic fluorination of the hydrochlorofluoropropenes to form hydrofluoropropenes.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: December 13, 2011
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Publication number: 20110218370
    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: Application
    Filed: November 12, 2009
    Publication date: September 8, 2011
    Applicant: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, John A. Wismer
  • Publication number: 20110218369
    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: Application
    Filed: November 12, 2009
    Publication date: September 8, 2011
    Applicant: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, John A. Wismer
  • Publication number: 20110130599
    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: Application
    Filed: June 23, 2009
    Publication date: June 2, 2011
    Applicant: Arkema Inc
    Inventors: Maher Y. Elsheikh, Philippe Bonnet
  • Publication number: 20110041529
    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), hydrofluoroolefins (HFOs), hydrocarbons, ethers including hydrofluoroethers (HFEs), esters, ketones, alcohols, 1,2-transdichloroethylene and mixtures thereof.
    Type: Application
    Filed: May 12, 2009
    Publication date: February 24, 2011
    Applicant: ARKEMA INC.
    Inventors: Benjamin Bin Chen, Philippe Bonnet, Maher Y. Elsheikh, Brett L. Van Horn, Laurent Abbas
  • Publication number: 20110012052
    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: Application
    Filed: March 6, 2009
    Publication date: January 20, 2011
    Inventors: Brett L. Van Horn, Philippe Bonnet, Benjamin Bin Chen, Maher Y. Elsheikh, Richard M. Crooker
  • Publication number: 20110009678
    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: September 4, 2008
    Publication date: January 13, 2011
    Applicant: Arkema Inc.
    Inventors: Philippe Bonnet, Maher Y. Elsheikh
  • Publication number: 20110001080
    Abstract: The present invention relates to formulated systems of 1-chloro-3,3,3-trifluoropropene (R-1233zd) and/or 2-chloro-3,3,3-trifluoropropene (R-1233xf) 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 pre-mixes.
    Type: Application
    Filed: March 6, 2009
    Publication date: January 6, 2011
    Applicant: ARKEMA INC.
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
  • Publication number: 20100185030
    Abstract: In this invention we are disclosing a process for the synthesis of hydrochlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the following steps of liquid phase, noncatalytic fluorination of hydrochloropropenes to form hydrochlorofluoropropenes and/or hydrofluoropropenes, followed by gas phase, catalytic fluorination of the hydrochlorofluoropropenes to form hydrofluoropropenes.
    Type: Application
    Filed: June 26, 2008
    Publication date: July 22, 2010
    Applicant: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Publication number: 20100181524
    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: Application
    Filed: June 27, 2008
    Publication date: July 22, 2010
    Applicant: ARKEMA INC.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen, Brett L. Van Horn
  • Publication number: 20100185029
    Abstract: The present invention discloses a process for the synthesis of hydrofluoroolefins (HFO). The process is based on the following two steps: the liquid phase fluorination of a hydrochloropropane(s) to hydrofluoropropane(s) (HFP) followed by the dehydrofluorination of the hydrofluoropropane(s) (HFP) to hydrofluoroolefins (HFO).
    Type: Application
    Filed: June 27, 2008
    Publication date: July 22, 2010
    Applicant: ARKEMA INC.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Laurent Wendlinger
  • Publication number: 20100113629
    Abstract: The present invention relates to blowing agent compositions comprising at least one hydrochlorofluoroolefin (HCFO) used in the preparation of foamable 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 to, 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: March 28, 2008
    Publication date: May 6, 2010
    Applicant: Arkema Inc.
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
  • Publication number: 20100105788
    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: March 28, 2008
    Publication date: April 29, 2010
    Applicant: Arkema Inc.
    Inventors: Benjamin Bin Chen, Maher Y. Elsheikh, Philippe Bonnet, Brett L. Van Horn, Joseph S. Costa