Patents Assigned to Atofina
  • Publication number: 20120053304
    Abstract: A method for the copolymerization of ethylene and a C3+ olefin copolymer in a loop reactor system and polymers formed therefrom are described herein.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 1, 2012
    Applicant: ATOFINA Research S.A.
    Inventors: Louis Fouarge, Eric Damme, Olivier Miserque, Daniel Siraux, Philippe Bodart, André Lewalle, Marc Van der Auwera, Frans Van den Brande, Giacomo Conti, Hugo Vandaele, Mark Verleysen, Carl Van Camp, Etienne Laurent, Philippe Marechal, Marc Moers, Leopold D'Hooghe, Marjan Sillis, Kai Hortman, Pascal Folie, Renaud Oreins
  • Patent number: 8029892
    Abstract: A breathable film includes at least one polymer (a) taken from the group comprising an ethylene/alkyl (meth)acrylate copolymer (a1), an optionally neutralized ethylene/ (meth)acrylic acid copolymer (a2), an ethylene/vinyl monomer copolymer (a3), the (a1)/(a2) blend, the (a1)/(a3) blend, the (a2)/(a3) blend and the (a1)/(a2)/(a3) blend, and/or includes at least one functionalized polyethylene (b); and at least one copolymer (c) having copolyamide blocks or polyester blocks and polyether blocks.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: October 4, 2011
    Assignee: Atofina
    Inventor: Christophe Lacroix
  • Patent number: 7790821
    Abstract: This invention relates to latex dispersions that are based on (co)polymers with one or more n-alkyl(meth)acrylate monomers with n a varying from 6 to 40, and optionally one or more monomers that are not very water-soluble of the (meth)acrylic and/or vinyl type, optionally one or more polar monomers that are selected from among the (meth)acrylamides and their derivatives and optionally one or more monomers that are selected from among the ethylenically unsaturated monocarboxylic and/or dicarboxylic acids or anhydrides. These dispersions are obtained by radical-type emulsion polymerization in the presence of water. They can be used as is for the inhibition of the deposition of paraffins that are contained in the crude petroleum hydrocarbons or else diluted in one or more solvents.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: September 7, 2010
    Assignee: Atofina
    Inventors: Alain Baloche, Didier Juhue, Philippe Picard, Tong Eak Pou, Caroline Truszkowski
  • Publication number: 20090143546
    Abstract: A method for controlling the injection of catalyst slurry in a polymerization reactor is described herein. The method includes the preparation of polyethylene with a solid catalyst and a hydrocarbon diluents. The method includes providing solid catalyst and a hydrocarbon diluent in one or more storage vessels such that a catalyst slurry is obtained in said vessel, transferring said catalyst slurry from said storage vessel to a mixing vessel wherein said catalyst slurry is diluted for obtaining a suitable concentration for use in a polymerization reaction, pumping said diluted catalyst slurry at a controlled flow rate from said mixing vessel to said polymerization reactor through one or more conduits, by means of a membrane pump provided in each of said conduits, and the membrane pump is controllable as a function of reactant concentration within the polymerization reactor.
    Type: Application
    Filed: October 1, 2008
    Publication date: June 4, 2009
    Applicant: ATOFINA RESEARCH S.A.
    Inventors: Louis Fouarge, Eric Damme, Olivier Miserque, Daniel Siraux, Philippe Bodart, Andre Lewalle, Marc Van der Auwera, Frans Van den Brande, Giacomo Conti, Hugo Vandaele, Mark Verleysen, Carl Van Camp, Etienne Laurent, Philippe Marechal, Marc Moers, Leopold D'Hooghe, Marjan Sillis, Kai Hortman, Pascal Folie, Renaud Oreins
  • Patent number: 7468405
    Abstract: A method for increasing at least one of the following two parameters of a polyamide: (I) its melting point and (ii) its enthalpy of melting ?Hm, in which: this polyamide is brought into contact in the solid state with water or with steam at a temperature close to its crystallization temperature Tc for a time long enough to effect this increase; then, the water (or steam) is separated from the polyamide and the polyamide is dried.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: December 23, 2008
    Assignee: Atofina
    Inventors: Jean-Philippe Allen, Philippe Blondel, Patrick Douais
  • Patent number: 7439384
    Abstract: The present invention relates to a process for the preparation of a peroxyester which can be used in particular in polymerizations, such as the polymerization of vinyl chloride, or in the thermosetting of polyester resins. This process comprises the reaction of a hydroxyhydroperoxide salt with an acid halide or an acid anhydride under the following conditions: the molar ratio Rb of the hydroxyhydroperoxide corresponding to the hydroxyhydroperoxide salt to the acid halide is between 0.5 and 1.5; or alternatively the molar ratio Rb? of the hydroxyhydroperoxide corresponding to the hydroxyhydroperoxide salt to the acid anhydride is between 1.0 and 3.0; the hydroxyhydroperoxide salt was prepared beforehand by reaction of the corresponding hydroxyhydroperoxide with a base according to a molar ratio Ra of the base to the hydroxyhydroperoxide of between 0.5 and 1.5; and this process is carried out in aqueous media.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: October 21, 2008
    Assignee: ATOFINA
    Inventors: Sandra Grimaldi, Gurusamy Jeyaraj
  • Patent number: 7417018
    Abstract: The invention relates to a method of cleaning a solid surface comprising the following stages: a) the solid surface is cleaned using a microemulsion-type cleaning composition; e) the cleaned surface is drained; f) the drained surface is rinsed with an organic solvent or a mixture of organic solvents with a low boiling point; and g) said surface which was rinsed with the organic solvent or the mixture of organic solvents used in c) is then dried.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: August 26, 2008
    Assignee: ATOFINA
    Inventors: Pascal Michaud, Jean-Claude Lheureux
  • Patent number: 7375159
    Abstract: Blends of PVDF (polyvinylidene fluoride) homopolymer or copolymer with ABC triblock copolymers are useful for manufacturing parts which may be sheets, film, tubes, rods, centrifugal pump components and containers. The PVDF comprises a fraction of non-transferred chains of very high molar mass which are insoluble in the usual solvents for PVDF, such as DMF (dimethylformamide), DMSO (dimethyl sulphoxide) and NMP (N-methylpyrrolidone), the polymer fraction associated with these high-mass chains having a dynamic viscosity of greater than 50 kpoise at 230° C., and at a shear rate of 100 s1, and has spherulites with a size between 0.5 and 4?m.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: May 20, 2008
    Assignee: Atofina
    Inventor: Thierry Pascal
  • Publication number: 20070178303
    Abstract: The present invention provides monofilaments or stretched tapes, unwoven or woven into raffia, prepared with metallocene-produced polyethylene having long chain branches.
    Type: Application
    Filed: April 7, 2004
    Publication date: August 2, 2007
    Inventors: Eric Maziers, Vincent Stephenne
  • Patent number: 7235604
    Abstract: The present invention relates to fire-retarded compositions comprising, by weight, the total being 100 parts: 50 to 75 parts of a blend of a polyamide (A) and a polyolefin (B), 25 to 50 parts of a blend comprising: 0.1 to 48.8 parts of a fire retardant, 0.1 to 30 parts of a phosphorus-containing plasticizer, 0.1 to 10 parts of a zeolite, the total of these three products being between 25 and 50. These compositions have a V0 or V1 classification according to the UL94-VB test when a fire test is carried out on test specimens 1.6 mm in thickness. They have many advantages, in particular the elongation at break measured according to ISO R 527-1B exceeds 100%. As regards the impact strength, they have a non-brittle behaviour in multiaxial impact at room temperature according to ISO 6603-2 (at a rate of 7.7 m/s). They retain at least 50% of their mechanical properties after ageing for seven days at 120° C. in hot air.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: June 26, 2007
    Assignee: Atofina
    Inventors: Philippe Blondel, Benoît Brule, Nicolas Frenois, Jean-Jacques Flat
  • Publication number: 20070135582
    Abstract: A modified diene-?-olefin copolymer which is represented by the formula (1) below and has H2C?C(R5)—COO— in at least a part of the ends. wherein R1 and R2 independently represent a hydroxyl group or H2C?C(R5)—COO—, R3s, R5s, and R6s are independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, R4s independently represent a phenyl group, a pyridyl group, a chlorine atom, a cyclohexyl group, or a carbonyloxyalkyl group, and l, m, and n represent the number of repetition.
    Type: Application
    Filed: February 9, 2005
    Publication date: June 14, 2007
    Applicant: Atofina Idemitsu Co., Ltd
    Inventors: Ryo Aburatani, Yuichi Fukunaga
  • Patent number: 7220803
    Abstract: The process comprises the following phases: formation of a pre-emulsion of monomers in water; transfer into the polymerisation reactor with stirring, of (1) reaction stock consisting of a water solution of a surfactant, in an amount by weight relative to the weight of final polymer dispersion of 1–15%; (2) a portion of the pre-emulsion prepared in the previous phase, in an amount of 1%–10% by weight of the initial pre-emulsion; phase C.1: initiation of the polymerisation ; phase C.2: polymerisation of the monomer mixture at 30–90° C., by gradually adding into the reactor, separately, the initiator solution and the remaining portion of the pre-emulsion with an added salt, which is soluble in water at 25° C. to at least 1% by weight, in an amount so as to have a salt concentration in the added pre-emulsion of 0.02–0.25% by weight; phase C.3: scrubbing of the residual monomers.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: May 22, 2007
    Assignee: Atofina
    Inventors: Daniele Becchi, Stefano Finocchiaro, Mario Lugli, Leo Mario Saija
  • Patent number: 7211202
    Abstract: The process of the present invention is a process to make a conductive fluorinated polymer composition (also called composite) wherein: a) an aqueous solution of an anilinium salt is mixed with an aqueous dispersion of a fluorinated polymer, b) then an oxidant is added to the mixture of step a) to make a blend of said fluorinated polymer and doped polyaniline (PANI), c) by-products and unreacted aniline are removed by washing with water or an alcohol to get a blend of purified fluorinated polymer and doped PANI, d) eventually the purified fluorinated polymer and doped PANI of step c) can be mixed with an acid, e) water is removed from the purified fluorinated polymer and doped PANI of step c) or d) if any and the remaining powder is melted and shaped in films, pellets or any object.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: May 1, 2007
    Assignee: Atofina
    Inventors: Alexander Korzhenko, Alexander Pud, Galina Shapoval
  • Patent number: 7202308
    Abstract: Use is made, for selectively hydrogenating the olefinic double bonds of block copolymers, at least one block of which comprises olefinic double bonds, using a catalyst based on a metal from Group VIII in a medium comprising an organic solvent for the copolymer and an ionic liquid as solvent for the catalyst, of a water-immiscible ionic liquid, preferably an ionic liquid for which the anion is the hexafluorophosphate anion and the cation is the 1-butyl-3-methylimidazolium (bmim+) or 1-ethyl-3-methylimidazolium (emim+) cation. Applied to poly(styrene)-b-poly(butadiene)-b-poly(methyl methacrylate) block copolymers, the poly(butadiene) block of which predominantly possesses a 1,4-microstructure, this process results in copolymers for which the degree of hydrogenation is at least equal to 50% and which exhibit a melting point of greater than 30 °C.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: April 10, 2007
    Assignee: Atofina
    Inventors: Beatrice Boussand, Philippe Bonnet, Francois Court, Michel Devic, Manuel Hidalgo, Christophe Navarro
  • Patent number: 7189779
    Abstract: The invention relates to a process for trapping a free monomer which has not reacted by copolymerization or by grafting comprising at least one epoxide functional group in a thermoplastic composition based on ethylene and/or on propylene and based on at least one monomer comprising at least one epoxide functional group, the said process comprising the following stages: preparation of the said thermoplastic composition, addition of a sufficient amount of a solid trapping additive exhibiting, at its surface, sites with a basic nature within the Lewis or Brönsted meaning. The trapping additive is a porous zeolite, the diameter of the pores of which is between 5 and 15 angströms, preferably between 6 and 13 angströms. The invention also relates to the composition obtained by such a process and to the blends comprising such a composition.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: March 13, 2007
    Assignee: Atofina S.A.
    Inventor: Thierry Senninger
  • Patent number: 7175782
    Abstract: The invention concerns a composition comprising: 35 to 65 wt. % of radical vinylaromatic polymer, 5 to 40 wt. % of ethylene and alkyl(meth)acrylate copolymer, 2 to 20 wt. % of copolymer with vinylaromaticdiene monomer blocks, a necessary and sufficient amount of conductive black carbon for providing the composition with resistivity ranging between 1.104 to 1.109 ?·cm. The composition maintains good conductivity whatever the transformation mode used and has excellent impact resistance.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: February 13, 2007
    Assignee: Atofina
    Inventor: Carole Dupuy
  • Patent number: 7176338
    Abstract: The invention relates to a process for preparing 1,1,1-trifluoro-2,2-dichloroethane (F123). This process consists in placing 1,1,1-trifluoro-2-chloroethane (F133a) in contact with chlorine in the presence of hydrogen fluoride and a fluorination catalyst. F133a may be obtained by fluorination of trichloroethylene, and the F123 may be subsequently fluorinated to F125.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: February 13, 2007
    Assignee: Atofina
    Inventors: Béatrice Boussand, Eric Jorda
  • Patent number: 7151071
    Abstract: The present invention relates to a method for preparing a solid titanium catalyst for olefin polymerization. The method for preparing a solid titanium catalyst for olefin polymerization according to the present invention comprises: preparing a magnesium compound solution by dissolving magnesium halide compound in a solvent mixture of cyclic ether and one or more of alcohol; preparing a carrier by adding titanium halide compound to said magnesium compound solution, then elevating the temperature of the solution and aging the solution to precipitate particles, and then adding titanium halide compound thereto for further reaction; preparing a catalyst by reacting said carrier with titanium compound and electron donor; and washing said catalyst with halogenated saturated hydrocarbon.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: December 19, 2006
    Assignee: Sansung Atofina Co., Ltd.
    Inventors: Sang-Yull Kim, Ki-Hwa Lee, Chun-Byung Yang, Ho-Sik Chang
  • Patent number: 7151190
    Abstract: The invention concerns a method for making aqueous solutions of unsaturated quaternary ammonium salts of formula (I) by reacting, in the presence of water, N,N-dimethylaminoethyl acrylate with a quaternizing agent of formula (II): R—Cl, said method is characterized in that it consists in: (a) in a closed reactor containing 5 60 wt. % of N,N-dimethylaminoethyl acrylate required for the reaction and which has been pressurized with air or depleted air at 0.5 to 3 bars, carrying out the reaction by continuously introducing, at a temperature ranging between 35 to 65° C., the quaternizing agent (II), and water, and finally the remaining N,N-dimethylaminoethyl acrylate, until the desired concentration of salt (I) in the water is reached, the water being introduced only when 0–20 wt. % of the amount required for the quaternizing agent (II) reaction has been added; the introduction of the remaining N,N-dimethylaminoethyl acrylate starting only when 20–80 wt.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: December 19, 2006
    Assignee: Arkema France (formerly Atofina)
    Inventors: Alain Riondel, Gilles Herbst, Marc Esch
  • Patent number: RE39819
    Abstract: To replace compositions based on CFCs or CFHCs in applications for cleaning or drying solid surfaces (in particular defluxing), the invention proposes azeotropic or quasi-azeotropic compositions based on 1,1,1,2,3,4,4,5,5,5-decafluoropentane, 1,1,1,3,3-pentafluorobutane and, optionally, methanol.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: September 4, 2007
    Assignee: Atofina
    Inventor: Pascal Michaud