Patents by Inventor Mou Paul

Mou Paul 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: 20160304363
    Abstract: A method for separating hydrocarbons and naphthenic acid from an aqueous mixture containing the same by passing the mixture through a spiral wound element to produce a permeate stream and concentrate stream wherein the concentrate stream has a relatively higher concentration of hydrocarbons than the permeate stream, wherein the spiral wound element includes a composite poly amide membrane comprising a porous support and a thin film poly amide layer, wherein the membrane is characterized by having: i) a NaCl rejection and a benzene tetra carboxylic acid rejection of at least 98% when tested with an aqueous solution containing 2000 ppm NaCl and 100 ppm benzene tetra carboxylic acid at 25° C., pH 8 and ImPa (150 psi); and ii) a dissociated carboxylate content of at least 0.3 moles/kg of polyamide at pH 9.5 as measured by Rutherford Backscattering (RBS).
    Type: Application
    Filed: December 15, 2014
    Publication date: October 20, 2016
    Inventors: Abhishek Roy, Leaelaf Mengistu Hailemariam, Mou Paul, Ian A. Tomlinson
  • Publication number: 20160303516
    Abstract: A method for treating a NaCl containing aqueous mixture comprising at least 2 ppm of anionic nano particles comprising the step of passing the mixture through a spiral wound element to produce a permeate stream and concentrate stream wherein the concentrate stream has a relatively higher concentration of nano particles than the permeate stream, wherein the spiral wound element includes a composite polyamide membrane comprising a porous support and a thin film polyamide layer, and wherein the membrane is characterized by having: i) a NaCl rejection and a nano particle rejection of at least 99% when tested with an aqueous solution containing 2000 ppm NaCl and 2 ppm anionic nano particles at 25 C, pH 8 and 1 mPa (150 psi); and ii) a dissociated carboxylate content of at least 0.3 moles/kg of polyamide at pH 9.5 as measured by Rutherford Backscattering (RBS).
    Type: Application
    Filed: December 15, 2014
    Publication date: October 20, 2016
    Inventors: Mou Paul, Abhishek Roy, Ian A. Tomlinson
  • Publication number: 20160303519
    Abstract: A method for treating an aqueous mixture containing an anionic surfactant including the step of passing the mixture through a spiral wound element to produce a permeate stream and concentrate stream wherein the concentrate stream has a relatively higher concentration of the anionic surfactant than the permeate stream, wherein the spiral wound element includes a composite polyamide membrane comprising a porous support and a thin film polyamide layer, and wherein the membrane is characterized by having: i) a NaCl rejection and an anionic rejection of at least 99% when tested with an aqueous solution containing 2000 ppm NaCl and 2 ppm an anionic surfactant at 25° C., pH 8 and ImPa (150 psi); and ii) a dissociated carboxylate content of at least 0.3 moles/kg of polyamide at pH 9.5 as measured by Rutherford Backscattering (RBS).
    Type: Application
    Filed: December 15, 2014
    Publication date: October 20, 2016
    Inventors: Ian A. Tomlinson, Mou Paul, Martin H. Peery, Abhishek Roy
  • Publication number: 20160303520
    Abstract: A thin film composite polyamide membrane comprising a porous support and a thin film polyamide layer characterized by possessing an azo (—N?N—) content of from 0.75% to 0.95%, as measured by pyrolysis gas chromatography.
    Type: Application
    Filed: December 15, 2014
    Publication date: October 20, 2016
    Inventors: Abhishek Roy, Robert C. Cieslinski, Bruce B. Gerhart, David D. Hawn, Mou Paul, XiaoHua Qiu, Mark A. Rickard, Steven Rosenberg, Ian A. Tomlinson, Chengli Zu
  • Patent number: 9452391
    Abstract: A method for making a composite polyamide membrane comprising a porous support and a polyamide layer, including the steps of: i) applying a polar solution including a polyfunctional amine monomer and a non-polar solution including a polyfunctional acyl halide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a polyamide layer; ii) applying a dihydroxyaryl compound to the polyamide layer, wherein the dihydroxyaryl compound is represented by: formula wherein D, D?, D? and D?? are independently selected from: alkyl, alkoxy, hydrogen, halogen, hydroxyl and amine, and L is a linking group; and iii) exposing the thin film polyamide layer to nitrous acid.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: September 27, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Patrick S. Hanley, Mou Paul, Abhishek Roy, Ian A. Tomlinson
  • Publication number: 20160271567
    Abstract: A method for making a composite polyamide membrane including a porous support and a thin film polyamide layer, wherein the method includes: (i) applying a polar solution comprising a polyfunctional amine monomer and a non-polar solution comprising a polyfunctional acyl halide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a thin film polyamide layer; (ii) treating the thin film polyamide layer with a polyfunctional arene compound; and (iii) exposing the thin film polyamide layer to nitrous acid; wherein the polar and non-polar solutions further comprises at least one of the following: (A) at least one of the solutions further comprises a tri-hydrocarbyl phosphate compound represented by Formula (I): and (B) the non-polar solution further comprises an acid-containing monomer comprising a C2-C20 hydrocarbon moiety substituted with at least one carboxylic acid functional group or salt thereof and at least one amine-reactive functional group.
    Type: Application
    Filed: October 29, 2014
    Publication date: September 22, 2016
    Inventors: Mou PAUL, Abhishek ROY, Ian A. TOMLINSON
  • Publication number: 20160271569
    Abstract: A method for making a composite polyamide membrane comprising a porous support and a polyamide layer, including the steps of: i) applying a polar solution including a polyfunctional amine monomer and a non-polar solution including a polyfunctional acyl halide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a polyamide layer; ii) applying a dihydroxyaryl compound to the polyamide layer, wherein the dihydroxyaryl compound is represented by: formula wherein D, D?, D? and D?? are independently selected from: alkyl, alkoxy, hydrogen, halogen, hydroxyl and amine, and L is a linking group; and iii) exposing the thin film polyamide layer to nitrous acid.
    Type: Application
    Filed: October 29, 2014
    Publication date: September 22, 2016
    Inventors: Patrick S. HANLEY, Mou PAUL, Abhishek ROY, Ian A. TOMLINSON
  • Patent number: 9399196
    Abstract: A method for making a composite polyamide membrane comprising the steps of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is includes at least one of the following steps: i) conducting the interfacial polymerization in the presence of a monomer comprising at least one phosphorous-containing functional group or salt thereof and an at least one amine-reactive functional group; and/or ii) applying such a monomer to the thin film polyamide layer.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: July 26, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Chunming Zhang, Aman A. Desai, Steven D. Jons, Mou Paul, Steven Rosenberg, Abhishek Roy, XiaoHua S. Qiu
  • Patent number: 9387442
    Abstract: A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method comprises the step of applying a polar solution including a polyfunctional amine monomer and non-polar solution including a polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is characterized by the step of applying a non-polar solution comprising an aliphatic acyclic tertiary amine compound to the support.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: July 12, 2016
    Inventors: Mou Paul, William E. Mickols
  • Publication number: 20160045873
    Abstract: A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method comprises the step of applying a polar solution including a polyfunctional amine monomer and non-polar solution including a polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is characterized by the step of applying a non-polar solution comprising an aliphatic acyclic tertiary amine compound to the support.
    Type: Application
    Filed: April 15, 2014
    Publication date: February 18, 2016
    Inventors: Mou Paul, William E. Mickols
  • Publication number: 20150314243
    Abstract: A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method includes:i) applying a polar solution including a polyfunctional amine monomer and a non-polar solution including a polyfunctional acylhalide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, and wherein at least one or both of the solutions further includes a tri-hydrocarbyl phosphate compound and ii) exposing the thin film polyamide layer to nitrous acid.
    Type: Application
    Filed: January 3, 2014
    Publication date: November 5, 2015
    Inventors: Abhishek ROY, Yasushi MAEDA, Mou PAUL, Steven ROSENBERG, Ian A. TOMLINSON
  • Publication number: 20150306548
    Abstract: A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method includes: i) applying a polar solution comprising a polyfunctional amine monomer, and a non-polar solution comprising a polyfunctional acyl halide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the non-polar solution further comprises at least 50 vol % of a C5 to C20 aliphatic hydrocarbon and from 2 to 25 vol % of benzene or benzene substituted with one or more C1 to C6 alkyl groups; and ii) applying an aqueous solution of nitrous acid to the thin film polyamide layer.
    Type: Application
    Filed: January 3, 2014
    Publication date: October 29, 2015
    Inventors: Abhishek Roy, Yasushi Maeda, Mou Paul, Steven Rosenberg, Ian A. Tomlinson
  • Publication number: 20150298066
    Abstract: A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method includes the steps of applying a polar solution comprising a polyfunctional amine monomer and a non-polar solution comprising a polyfunctional acyl halide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a thin film polyamide layer. The method is characterized by including a substituted benzamide monomer within the non-polar solution.
    Type: Application
    Filed: January 3, 2014
    Publication date: October 22, 2015
    Inventors: Abhishek Roy, Tina L. Arrowood, Aman A. Desai, Steven D. Jons, Mou Paul, XiaoHua Qiu, Steven Rosenberg, Ian A. Tomlinson
  • Patent number: 9073015
    Abstract: A method for making a composite polyamide membrane including the steps of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is includes at least one of the following steps: i) conducting the interfacial polymerization in the presence of a subject monomer comprising at least one carboxylic acid group linked to an aromatic moiety and wherein the aromatic moiety is further substituted with at least one of an acyl halide or anhydride functional group and ii) applying the subject monomer to the thin film polyamide layer. The invention includes many additional embodiments.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: July 7, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Steven Rosenberg, Steven D. Jons, Joseph D. Koob, Mou Paul, XiaoHua Qiu, Abhishek Roy, Chunming Zhang, Aman A. Desai
  • Publication number: 20150174534
    Abstract: A method for making a composite polyamide membrane including a porous support and a thin film polyamide layer including the steps of applying a polyfunctional amine monomer and a combination amine-reactive compounds to a surface of the porous support and reacting the constituents to form a thin film polyamide layer, wherein the amine-reactive compounds include: i) a polyfunctional amine-reactive monomer including two to three amine-reactive moieties selected from acyl halide, sulfonyl halide and anhydride, ii) a polyfunctional amine-reactive monomer including at least four amine-reactive moieties selected from acyl halide, sulfonyl halide and anhydride, and iii) an acid compound including at least on carboxylic acid moiety or salt thereof and at least one amine-reactive moiety selected from acyl halide and sulfonyl halide.
    Type: Application
    Filed: July 3, 2013
    Publication date: June 25, 2015
    Inventors: Mou Paul, Tina L. Arrowood, Robert C. Cieslinski, Steven D. Jons, Steven Rosenberg, Abhishek Roy, Ian A. Tomlinson
  • Publication number: 20150165387
    Abstract: A thin film composite polyamide membrane having a porous support and a thin film polyamide layer comprising a reaction product of m-phenylene diamine (mPD) and trimesoyl chloride (TMC), characterized by the thin film polyamide layer having a critical strain value of less than 10%. In another embodiment, the thin film polyamide layer has a modulus of greater than 0.75 (GPa). In yet another embodiment, the thin film polyamide layer has an equilibrium swelling value of at least 45%. In another embodiment, the thin film polyamide layer has a thickness of at least 230 nm.
    Type: Application
    Filed: July 3, 2013
    Publication date: June 18, 2015
    Inventors: Abhishek Roy, Tina L. Arrowood, Anand S. Badami, Robert C. Cieslinski, David D. Hawn, Steven D. Jons, Mou Paul, Steven Rosenberg, Huang Wu
  • Publication number: 20150157990
    Abstract: A thin film composite polyamide membrane including a porous support and a thin film polyamide layer which is a reaction product of m-phenylene diamine (mPD) and trimesoyl chloride (TMC), wherein the membrane is characterized by the thin film polyamide layer having a dissociated carboxylic acid content of at least 0.18 moles/kg at pH 9.5, and wherein pyrolysis of the thin film polyamide layer at 650 C results in a ratio of responses from a flame ionization detector for fragments produced at 212 m/z and 237 m/z of less than 2.8.
    Type: Application
    Filed: July 3, 2013
    Publication date: June 11, 2015
    Inventors: Abhishek Roy, Tina L. Arrowood, Anand S. Badami, Robert C. Cieslinski, Bruce B. Gerhart, David D. Hawn, Steven D. Jons, Mou Paul, Martin H. Peery, XiaoHua sam Qiu, Mark A. Rickard, Steven Rosenberg, Ian A. Tomlinson, Cheng Li Zu
  • Publication number: 20150151255
    Abstract: A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method includes the step of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the step of applying the polyfunctional acyl halide monomer to the porous support includes the step of combining the polyfunctional acyl halide monomer with a non-polar solvent at a concentration of at least 0.18 weight percent to form a coating solution which is applied to the surface of the porous support, and wherein the interfacial polymerization is conducted in the presence of a tri-hydrocarbyl phosphate compound which is provided in a molar ratio of at least 0.5:1 with the polyfunctional acyl halide monomer. Many additional embodiments are described including membranes made from the subject method and applications for such membranes.
    Type: Application
    Filed: July 3, 2013
    Publication date: June 4, 2015
    Applicant: Dow Global Technologies LLC
    Inventors: Abhishek Roy, Tina L. Arrowood, Robert C. Cieslinski, Derek M. Stevens, David D. Hawn, Steven D. Jons, Mou Paul, Martin H. Peery, Steven Rosenberg, Ian A. Tomlinson
  • Publication number: 20150147470
    Abstract: A method for making a composite polyamide membrane including a porous support and a thin film polyamide layer, wherein the method includes the step of applying a polyfunctional amine monomer and a tetraacyl acyl halide monomer represented by Formula (I) to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer; wherein A is selected from: oxygen (—O—); carbon (—C—); silicon (—Si—); each of which may be unsubstituted or substituted, e.g. with alkyl groups of 1-4 carbon atoms; or a carbonyl group (—C(O)—), X is the same or different and is selected from a halogen, and Y is selected from halogen and hydroxide.
    Type: Application
    Filed: July 3, 2013
    Publication date: May 28, 2015
    Applicant: Dow Global Technologies LLC
    Inventors: Tina L. Arrowood, Aman A. Desai, Steven D. Jons, Mou Paul, Abhishek Roy
  • Publication number: 20150129485
    Abstract: A thin film composite membrane including a porous support and a thin film polyamide layer characterized by having a dissociated carboxylate content of at least 0.45 moles/kg at pH 9.5 and a method for making a composite polyamide applying a polar solution comprising a polyfunctional amine monomer and a non-polar solution comprising a polyfunctional amine-reactive monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is characterized by the non-polar solution comprising at least 0.025 wt % of an acid compound including at least one carboxylic acid moiety and at least one amine-reactive moiety selected from acyl halide and anhydride.
    Type: Application
    Filed: July 3, 2013
    Publication date: May 14, 2015
    Applicants: DOW GLOBAL TECHNOLOGIES LLC, DOW GLOBAL TECHNOLOGIES LLC, THE DOW CHEMICAL COMPANY
    Inventors: Abhishek Roy, Tina L. Arrowood, Robert C. Cieslinski, David D. Hawn, Steven D. Jons, Mou Paul, Martin H. Peery, XiaoHua Qiu, Steven Rosenberg, Ian A. Tomlinson, Chengli Zu