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: 20140066588Abstract: In a process for producing polyamides by polycondensation of polycondensable polyamide-forming monomers and/or oligomers in reaction mixtures comprising same, which may be water-containing but are free from organic solvents, the polycondensation is effected in an agitated reactor under agitation in a first step in the liquid phase and after a phase change taking place during the process in the same reactor is effected in a subsequent second step in the solid state, wherein the temperature in the reactor is below the melting point of the polyamide in the second step at least.Type: ApplicationFiled: September 3, 2013Publication date: March 6, 2014Applicant: BASF SEInventors: Achim Stammer, Faissal-Ali El-Toufaili, Simon Gramlich, Angela Ulzhöfer Ulzhöfer
-
Patent number: 8658724Abstract: 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 ofType: GrantFiled: June 15, 2010Date of Patent: February 25, 2014Assignee: BASF SEInventors: Christian Schmidt, Faissal-Ali El-Toufaili, Philippe Desbois, Raquel Fernandez Rodiles
-
Patent number: 8629237Abstract: A process for producing polyamides from the corresponding monomers and/or prepolymers comprises the steps of (a) reacting the monomers and/or prepolymers and optionally further components under polyamide-forming reaction conditions to form polyamide, (b) treating the polyamide obtained in step (a) in a kneader above the melting temperature of the polyamide, (c) further processing the polyamide from step (b) into pellet, film, fiber or moldings, preferably pelletizing the polyamide, (d) extracting some or all unconverted monomers and any product dimers and oligomers and also optionally further components from the polyamide and/or drying the polyamide.Type: GrantFiled: November 20, 2012Date of Patent: January 14, 2014Assignee: BASF SEInventors: Rüdiger Häffner, Faissal-Ali El-Toufaili, Achim Stammer, Rolf-Egbert Grützner, Angela Ulzhöfer, Jens Becker
-
Patent number: 8618225Abstract: A process for preparing polyamides by reacting starting monomers selected from dicarboxylic acids and diamines or salts of 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, which process comprises performing the reaction in an ionic liquid as solvent without use of additional accelerants.Type: GrantFiled: February 6, 2009Date of Patent: December 31, 2013Assignee: BASF SEInventor: Faissal-Ali El Toufaili
-
Publication number: 20130253089Abstract: The invention relates to a continuous process for the preparation of amphiphilic graft polymers, wherein a vinyl ester component (B) composed of vinyl acetate and/or vinyl propionate (B1) and, if desired, a further ethylenically unsaturated monomer (B2), is polymerized in the presence of a polyalkylene oxide (A), a free radical-forming initiator (C) and, if desired, an additive (D), at a mean polymerization temperature at which the initiator (C) has a decomposition half-time of from 1 to 500 min, in at least one tubular reactor segment with a feed side and an outlet side, through which the reaction mixture comprising at least a part of component (A) to (C), and if desired (D), streams, a tubular reactor segment and the use of the inventive amphiphilic graft polymer. The invention further relates to an inventive amphiphilic graft polymer and the use thereof.Type: ApplicationFiled: March 7, 2013Publication date: September 26, 2013Applicant: BASF SEInventors: Faissal-Ali El-Toufaili, Michaela Heussler, Christian Schwede, Aaron Flores-Figueroa, Rainer Dobrawa, Dieter Boeckh, Wolfgang Loth, Gerd Konrad
-
Publication number: 20130252874Abstract: The present invention relates to a detergent composition containing an amphiphilic graft polymer based on water-soluble polyalkylene oxides (A) as a graft base and side chains formed by polymerization of a vinyl ester component (B), where the polymer has a broad polarity distribution.Type: ApplicationFiled: March 8, 2013Publication date: September 26, 2013Applicant: The Procter & Gamble CompanyInventors: Frank HULSKOTTER, Darren REES, Brian Joseph LOUGHNANE, Faissal-Ali EL-TOUFAILI, Rainer Anton DOBRAWA
-
Patent number: 8378054Abstract: 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: GrantFiled: November 11, 2008Date of Patent: February 19, 2013Assignee: BASF SEInventors: Martin Weber, Volker Warzelhan, Faissal-Ali El-Toufaili, Andreas Greiner, Heiner Stange, Seema Agrarwal
-
Publication number: 20120245308Abstract: The present invention relates to a process for preparing a polyamide based on dicarboxylic acids and diamines, comprising the following stages: A) providing an aqueous monomer mixture composed of dicarboxylic acids and diamines, where the molar ratio of dicarboxylic acids to diamines is adjusted such that, at the outlet of stage C), there is a molar deficiency of dicarboxylic acids or diamines of 1 to 10 mol%, based on the respective other component, B) transferring the aqueous mixture from stage A) into a continuous evaporator reactor in which diamines and dicarboxylic acids are converted at a temperature in the range from 100 to 370° C. and a pressure in the range from 1 to 50 bar, C) transferring the mixture from stage B) into a separator which is operated at a temperature in the range from 100 to 370° C.Type: ApplicationFiled: December 3, 2010Publication date: September 27, 2012Applicant: BASF SEInventors: Faissal-Ali El-Toufaili, Philippe Desbois, Andreas Wollny, Sven Lawrenz, Christian Schmidt
-
Publication number: 20120157654Abstract: Method for the drying and post-condensation of polyamide particles, wherein the polyamide particles are irradiated with electromagnetic waves while passing an inert gas through the particles.Type: ApplicationFiled: December 9, 2011Publication date: June 21, 2012Applicant: BASF SEInventors: Faissal-Ali El-Toufaili, Achim Stammer, Jens Becker, Karsten Daunke, Thomas Sauer
-
Publication number: 20120157594Abstract: 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 adType: ApplicationFiled: June 15, 2010Publication date: June 21, 2012Applicant: BASF SEInventors: Christian Schmidt, Faissal-Ali El-Toufaili, Philippe Desbois, Racquel Fernandez Rodiles
-
Publication number: 20120065339Abstract: 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: ApplicationFiled: September 7, 2011Publication date: March 15, 2012Applicant: BASF SEInventors: Rolf-Egbert Grützner, Shankara Narayanan Keelapandal Ramamoorthy, Faissal-Ali El-Toufaili, Achim Gerstlauer, Achim Stammer
-
Publication number: 20110245366Abstract: 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: ApplicationFiled: March 30, 2011Publication date: October 6, 2011Applicant: BASF SEInventors: Lionel GEHRINGER, Faissal-Ali El-Toufaili, Ulrike Mahn, Christian Pilger
-
Publication number: 20110144300Abstract: 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: ApplicationFiled: August 14, 2009Publication date: June 16, 2011Applicant: BASF SEInventors: Philippe Desbois, Faissal-Ali El-Toufaili, Michael Gall, Andreas Wollny
-
Publication number: 20110092645Abstract: 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: ApplicationFiled: June 19, 2009Publication date: April 21, 2011Applicant: BASF SEInventors: Wolfgang Loth, Faissal-Ali El-Toufaili, Achim Stammer, Gad Kory, Achim Gerstlauer, Jens Becker
-
Publication number: 20100311918Abstract: 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: ApplicationFiled: February 6, 2009Publication date: December 9, 2010Inventor: Faissal-Ali El Toufaili
-
Publication number: 20100286303Abstract: 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: ApplicationFiled: November 11, 2008Publication date: November 11, 2010Applicant: BASF SEInventors: Martin Weber, Volker Warzelhan, Faissal-Ali El-Toufaili, Andreas Greiner, Heiner Stange, Seema Agrarwal