Patents by Inventor Faissal-Ali El-Toufaili

Faissal-Ali El-Toufaili 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: 20120157594
    Abstract: What are described are a solution comprising a terpolymer formed from the monomers of components A, B and C, the total amount of which adds up to 100% by weight, a) 5 to 60% by weight of lactams as component A, b) 5 to 60% by weight of equimolar amounts of adipic acid and one or more aliphatic diamines as component B, c) 10 to 70% by weight of equimolar amounts of adipic acid and 4,4?-diaminodicyclohexylmethane (dicycan) as component C, in an aromatics-free solvent system comprising 50 to 100% by weight of C1-4-alkanol, 0 to 50% by weight of water and not more than 10% by weight of further aromatics-free solvents, where the total amount of the solvent system adds up to 100% by weight, and a terpolymer formed from the monomers of components A, B and C, the total amount of which adds up to 100% by weight, a) 15 to 40% by weight of lactams as component A, b) 20 to 45% by weight of equimolar amounts of adipic acid and one or more aliphatic diamines as component B, c) 25 to 60% by weight of equimolar amounts of ad
    Type: Application
    Filed: June 15, 2010
    Publication date: June 21, 2012
    Applicant: BASF SE
    Inventors: Christian Schmidt, Faissal-Ali El-Toufaili, Philippe Desbois, Racquel Fernandez Rodiles
  • Publication number: 20120065339
    Abstract: Process for producing polyamides that are stable during processing, by treating the polyamide during the solid-phase postcondensation process with a gas which comprises carrier gas (inert gas), water, and acid, or an anhydride or lactone or a mixture of these or, respectively, comprises ammonia, or amine, or a mixture of these, at a temperature from 130 to 200° C. and at a pressure of from 0.01 to 10 bar.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 15, 2012
    Applicant: BASF SE
    Inventors: Rolf-Egbert Grützner, Shankara Narayanan Keelapandal Ramamoorthy, Faissal-Ali El-Toufaili, Achim Gerstlauer, Achim Stammer
  • Publication number: 20110245366
    Abstract: The invention relates to a process for preparing polyester alcohols by catalytically reacting at least one at least difunctional carboxylic acid or a derivative thereof with at least one at least difunctional alcohol, which comprises performing at least part of the reaction in the presence of microwave radiation.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Applicant: BASF SE
    Inventors: Lionel GEHRINGER, Faissal-Ali El-Toufaili, Ulrike Mahn, Christian Pilger
  • Publication number: 20110144300
    Abstract: Polyamides based on dicarboxylic acids and on diamines are produced in a batch process by 1) feeding the entire amount of monomer composed of dicarboxylic acids, of diamines, and, if appropriate, of further polyamide-forming monomers, in the desired stoichiometry, in a closed stirred-tank reactor, 2) heating the monomer mixture in the stirred-tank reactor, with stirring, and with setting of a certain pressure, to a desired reaction temperature for the production of a prepolymer, 3) if appropriate, completely or partially depressurizing the reaction mixture from stage 2), 4) if appropriate, carrying out further thermal treatment of the reaction mixture from stage 2) or 3), and 5) reacting the reaction mixture from stage 2), 3), or 4) in the melt in a vented extruder for further increase of the molecular weight, with discharge of water vapor, and without use of additional polyamide-forming monomers or of polyamides.
    Type: Application
    Filed: August 14, 2009
    Publication date: June 16, 2011
    Applicant: BASF SE
    Inventors: Philippe Desbois, Faissal-Ali El-Toufaili, Michael Gall, Andreas Wollny
  • Publication number: 20110092645
    Abstract: A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises 1) carrying out the predrying process in a continuous drying apparatus which is operated in countercurrent mode or in crossflow mode with inert gas or steam, or with a mixture of inert gas and steam, using a pellet temperature in the range from 70 to 200° C., and 2) Carrying out the subsequent continuous postcondensation process in a separate vertical duct with moving bed at a pellet temperature in the range from 120 to 210° C., where the duct is operated in countercurrent mode with inert gas or steam, or with a mixture of inert gas and steam, the inert gas is introduced at least two sites along the duct, and from 15 to 90% of the inert gas is introduced at the base of the vertical duct and from 10 to 85% of the inert gas is introduced in the upper half below the surface of the pellets.
    Type: Application
    Filed: June 19, 2009
    Publication date: April 21, 2011
    Applicant: BASF SE
    Inventors: Wolfgang Loth, Faissal-Ali El-Toufaili, Achim Stammer, Gad Kory, Achim Gerstlauer, Jens Becker
  • Publication number: 20100311918
    Abstract: A process for preparing polyamides by reacting starting monomers selected from dicarboxylic acids and diamines or salts of the dicarboxylic acids and diamines, amino carboxylic acids, amino nitriles, lactams and mixtures thereof, in the presence or absence of water and/or of functionalizing compounds capable of attaching to carboxyl or amino groups, comprises performing the reaction in an ionic liquid as solvent without use of additional accelerants which, based on the monomers, are present in an amount of more than 50 mol %.
    Type: Application
    Filed: February 6, 2009
    Publication date: December 9, 2010
    Inventor: Faissal-Ali El Toufaili
  • Publication number: 20100286303
    Abstract: A process for preparing polyaryl ethers in which a polycondensation of the monomer building blocks is carried out using microwave irradiation leads to thermoplastic molding compositions having improved color properties.
    Type: Application
    Filed: November 11, 2008
    Publication date: November 11, 2010
    Applicant: BASF SE
    Inventors: Martin Weber, Volker Warzelhan, Faissal-Ali El-Toufaili, Andreas Greiner, Heiner Stange, Seema Agrarwal