Patents by Inventor Farid Khouri
Farid Khouri 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).
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Publication number: 20070299186Abstract: This invention relates to organic salt compositions useful in the preparation of organoclay compositions, polymer-organoclay composite compositions, and methods for the preparation of polymer nanocomposites. In one embodiment, the present invention provides an organoclay composition comprising alternating inorganic silicate layers and organic layers, said organic layers comprising a quaternary phosphonium cation having structure X wherein Ar1, Ar2, and Ar3 are independently C2-C50 aromatic radicals; Ar4 is a bond or a C2-C50 aromatic radical; “a” is a number from 1 to about 200; “c” is a number from 0 to 3; R1 is independently at each occurrence a halogen atom, a C1-C20 aliphatic radical, a C5-C20 cycloaliphatic radical, or a C2-C20 aromatic radical; and R2 is a halogen atom, a C1-C20 aliphatic radical, a C5-C20 cycloaliphatic radical, a C2-C50 aromatic radical, or a polymer chain.Type: ApplicationFiled: June 21, 2007Publication date: December 27, 2007Inventors: Kwok Chan, Joshua Croll, Balakrishnan Ganesan, Marcus Harrigan, Farid Khouri, Gurram Kishan, Ritesh Mathur, Rachel Suffield, Wenhui Wang, James White
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Publication number: 20070299189Abstract: In one embodiment, the present invention provides a method of making a polymer-organoclay composite composition comprising (a) contacting under condensation polymerization conditions a first monomer, a second monomer, a solvent, and an organoclay composition, said organoclay composition comprising alternating inorganic silicate layers and organic layers, to provide a first polymerization reaction mixture, wherein one of said first monomer and second monomers is a diamine and the other is an dianhydride; (b) carrying out a stoichiometry verification step on the first polymerization reaction mixture; (c) optionally adding additional reactant (monomer 1, monomer 2, or chainstopper) to the first polymerization reaction mixture to provide a second polymerization reaction mixture; and (d) removing solvent from the first polymerization reaction mixture or the second polymerization reaction mixture to provide a first polymer-organoclay composite composition comprising a polymer component and an organoclay component wType: ApplicationFiled: June 22, 2007Publication date: December 27, 2007Inventors: Feng Cao, Kwok Chan, Erik Hagberg, Farid Khouri, Tara Mullen, Roy Odle, James White, Norimitsu Yamaguchi
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Publication number: 20070219344Abstract: High heat polyethersulfone compositions are provided which possess unexpectedly high glass transition temperatures. The polyethersulfone compositions comprise structural units derived from phthalimide bisphenols such as 3,3-bis(4-hydroxyphenyl)-N-phenylphthalimide, and structural units derived from at least one biphenyl-bissulfone such as 4,4?-bis((4-chlorophenyl)sulfonyl)-1,1?-biphenyl. The novel polyethersulfone compositions may further comprise structural units derived from one or more biphenols such as 4,4?-biphenol, bisphenols such as BPA, or other electrophilic sulfone monomers, such as bis(4-chlorophenyl)sulfone. In one embodiment, the polyethersulfone composition of the present invention comprises structural groups derived exclusively from 3,3-bis(4-hydroxyphenyl)-N-phenylphthalimide, and 4,4?-bis((4-chlorophenyl)sulfonyl)-1,1?-biphenyl and exhibits a single glass transition of greater than 300° C.Type: ApplicationFiled: November 21, 2005Publication date: September 20, 2007Applicant: General Electric CompanyInventors: Daniel Steiger, Farid Khouri, Daniel Brunelle, Amy Koren
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Publication number: 20070161821Abstract: Disclosed is a method for removing a neutral or an ionic guanidine compound from aqueous media optionally comprising an alkali metal halide, wherein the method is selected from the group consisting of (a) adsorption onto a carbonaceous adsorbent, (b) adsorption onto a clay adsorbent, (c) filtration through a nanofiltration membrane, and (d) removal of water and calcination.Type: ApplicationFiled: March 12, 2007Publication date: July 12, 2007Applicant: GENERAL ELECTRIC COMPANYInventors: David Hall, Thomas Guggenheim, James Silva, Farid Khouri, Matthew Littlejohn, Balakrishnan Ganesan, Ashok Shyadligeri, Pradeep Nadkarni
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Patent number: 7230066Abstract: The present invention provides novel block copolycarbonates comprising residues from a hydroxy terminated polyetherimide or polyimide, residues from a dihydroxy compound, and residues from an activated carbonate. In a preferred embodiment of the present invention the polyetherimide or polyimide blocks exhibit high Mw while the resulting block copolycarbonate exhibits a single Tg. The novel block copolycarbonates of the present invention are produced under melt polymerization conditions in the presence an activated carbonate source.Type: GrantFiled: December 16, 2004Date of Patent: June 12, 2007Assignee: General Electric CompanyInventors: Farid Khouri, Julia Lee, Sheldon Shafer
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Publication number: 20070117962Abstract: High heat polyethersulfone compositions are provided which possess unexpectedly high glass transition temperatures. The polyethersulfone compositions comprise structural units derived from fluorenone bisphenols such as 9,9-bis(4-hydroxyphenyl)fluorene, and structural units derived from at least one biphenyl-bissulfone such as 4,4?-bis((4-chlorophenyl)sulfonyl)-1,1?-biphenyl. The novel polyethersulfone compositions may further comprise structural units derived from one or more biphenols such as 4,4?-biphenol, bisphenols such as BPA, or other electrophilic sulfone monomers, such as bis(4-chlorophenyl)sulfone. In one embodiment, the polyethersulfone composition of the present invention comprises structural groups derived exclusively from 9,9-bis(4-hydroxyphenyl)fluorene and 4,4?-bis((4-chlorophenyl)sulfonyl)-1,1?-biphenyl and exhibits a single glass transition of greater than 300° C.Type: ApplicationFiled: November 21, 2005Publication date: May 24, 2007Applicant: General Electric CompanyInventors: Daniel Steiger, Farid Khouri, Daniel Brunelle, Amy Koren
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Publication number: 20060173158Abstract: Polyether polymers, such as polyetherimides, are prepared by the reaction of a dihydroxy-substituted aromatic hydrocarbon alkali metal salt, such as bisphenol A disodium salt, with a bis(N-(chlorophthalimido))aromatic compound, such as 1,3- and/or 1,4-bis(N-(4-chlorophthalimido))benzene, in a solvent such as o-dichlorobenzene and in the presence of a phase transfer catalyst such as a hexaalkylguanidinium chloride. Several embodiments may be employed to improve the method. They comprise employing substantially dry reagents, employing a high solids level in solvent, beginning with an excess of bis(N-(chlorophthalimido))-aromatic compound and incrementally adding alkali metal salt, employing alkali metal salt of small particle size, and using reagents of high purity.Type: ApplicationFiled: February 28, 2006Publication date: August 3, 2006Applicant: General Electric CompanyInventors: Daniel Brunelle, Havva Acar, Farid Khouri, Thomas Guggenheim, David Woodruff, Norman Johnson
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Publication number: 20060135741Abstract: Bis(halophthalimides) are prepared in mixture in an organic liquid such as ortho-dichlorobenzene or anisole, by a reaction at a temperatire of at least 150° C. between at least one diamine compound and at least one halophthalic anhydride in the presence of imidization catalyst. The reaction mixture is maintained at about 15% by weight solids content and rich in the halophthalic anhydride by constantly monitoring the reaction mixture using analytical methods such as high performance liquid chromatography. The product mixture may be directly employed in the direct preparation of polyetherimides, and similar slurries may be employed to prepare other polyether polymers.Type: ApplicationFiled: December 22, 2004Publication date: June 22, 2006Inventors: John Gui, Farid Khouri, Norman Johnson, Thomas Guggenheim, David Woodruff, James Silva
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Publication number: 20060135733Abstract: The present invention provides novel block copolycarbonates comprising residues from a hydroxy terminated polyetherimide or polyimide, residues from a dihydroxy compound, and residues from an activated carbonate. In a preferred embodiment of the present invention the polyetherimide or polyimide blocks exhibit high Mw while the resulting block copolycarbonate exhibits a single Tg. The novel block copolycarbonates of the present invention are produced under melt polymerization conditions in the presence an activated carbonate source.Type: ApplicationFiled: December 16, 2004Publication date: June 22, 2006Applicant: General Electric CompanyInventors: Farid Khouri, Julia Lee, Sheldon Shafer
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Publication number: 20060135731Abstract: Bis(halophthalimides) are prepared in a solvent such as ortho-dichlorobenzene or anisole, by a reaction at a temperature of at least 150° C. between at least one diamine compound and at least one halophthalic anhydride in the presence of imidization catalyst. The reaction produces a vapor stream comprising solvent and water formed as a by-product of the imidization reaction. A suitable vapor handling system comprising a partial reflux condenser is used to recycle the solvent, maintain the reactant concentration, conduct the reaction at a higher temperature, and effect more efficient conversion of reactants to product bis(halophthalimides). Reaction conditions disclosed may also be used to prepare organic polyimides.Type: ApplicationFiled: September 21, 2005Publication date: June 22, 2006Applicant: General Electric CompanyInventors: James Silva, Farid Khouri
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Publication number: 20060066004Abstract: A method for controlling haze in an article comprising a polymer composition, said method comprising providing a polymer composition comprising less than 25 parts per million alkali metal halide; and fabricating an article from said polymer composition.Type: ApplicationFiled: September 30, 2004Publication date: March 30, 2006Inventors: William Richards, Farid Khouri, Thomas Guggenheim
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Publication number: 20050080228Abstract: A method for preparing a polyimide includes introducing a mixture of an oligomer and a solvent to an extruder, removing solvent via at least one extruder vent, and melt kneading the oligomer to form a polyimide. The polyimide has a low residual solvent content. The method is faster than solution polymerization of polyimides, and it avoids the stoichiometric inaccuracies associated with reactive extrusion processes that use monomers as starting materials.Type: ApplicationFiled: October 10, 2003Publication date: April 14, 2005Inventors: Norberto Silvi, Mark Giammattei, Paul Howson, Farid Khouri
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Publication number: 20050049384Abstract: Methods of reducing the amount of undesirable cyclic oligomer by-products in the production of polyetherimides are disclosed. The resulting polyetherimides have enhanced thermomechanical properties.Type: ApplicationFiled: August 25, 2003Publication date: March 3, 2005Inventors: Farid Khouri, Daniel Brunelle, Donald Johnson
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Publication number: 20050049390Abstract: Polyether polymers, such as polyetherimides, are prepared by the reaction of a dihydroxy-substituted aromatic hydrocarbon alkali metal salt, such as bisphenol A disodium salt, with a bis(N-(chlorophthalimido))aromatic compound, such as 1,3- and/or 1,4-bis[N-(4-chlorophthalimido)]benzene, in a solvent such as o-dichlorobenzene and in the presence of a phase transfer catalyst such as a hexaalkylguanidinium chloride. Several embodiments may be employed to improve the method. They comprise employing substantially dry reagents, employing a high solids level in solvent, beginning with an excess of bis(N-(chlorophthalimido))-aromatic compound and incrementally adding alkali metal salt, employing alkali metal salt of small particle size, and using reagents of high purity.Type: ApplicationFiled: August 25, 2003Publication date: March 3, 2005Inventors: Daniel Brunelle, Hava Acar, Farid Khouri, Thomas Guggenheim, David Woodruff, Norman Johnson
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Publication number: 20050049392Abstract: Methods of reducing the amount of undesirable by-products in the production of polymers are disclosed. The resulting polyetherimides have lower polydispersivity and enhanced thermomechanical properties. In some embodiments, cyclic and low molecular weight linear oligomers are also obtained.Type: ApplicationFiled: August 25, 2003Publication date: March 3, 2005Inventors: Farid Khouri, Paul Howson
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Publication number: 20050049439Abstract: Disclosed is a method for preparing an alkali metal salt of a hydroxy-substituted hydrocarbon which comprises the steps of (i) contacting in solvent media at least one hydroxy-substituted hydrocarbon with a base comprising an alkali metal cation; and (ii) devolatilizing the solvent media comprising alkali metal salt by adding or spraying the solvent media into a substantially water-immiscible organic solvent, said solvent being at a temperature greater than the boiling point of solvent media at the prevailing pressure. In one embodiment the solvent media comprises water, and optionally at least one water-soluble protic organic solvent.Type: ApplicationFiled: August 25, 2003Publication date: March 3, 2005Inventors: Thomas Guggenheim, Daniel Brunelle, David Woodruff, Lee Bergman, Norman Johnson, Matthew Littlejohn, Farid Khouri
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Publication number: 20050029194Abstract: Disclosed is a method for removing a neutral or an ionic guanidine compound from an aqueous media optionally comprising an alkali metal halide, wherein the method is selected from the group consisting of (a) adsorption onto a carbonaceous adsorbent, (b) adsorption onto a clay adsorbent, (c) filtration through a nanofiltration membrane, and (d) removal of water and calcination.Type: ApplicationFiled: December 22, 2003Publication date: February 10, 2005Inventors: David Hall, Thomas Guggenheim, James Silva, Farid Khouri, Matthew Littlejohn, Balakrishnan Ganesan, Ashok Shyadligeri, Pradeep Nadkarni