Patents Assigned to Atofina
  • Polyamide-coated metal surfaces
    Publication number: 20040028921
    Abstract: A metal surface is coated with a coating comprising, in succession starting from the metal:
    Type: Application
    Filed: April 8, 2003
    Publication date: February 12, 2004
    Applicant: ATOFINA
    Inventor: Nicolas Amouroux
  • Process for the manufacture of mercaptocarboxylic acids from unsaturated carboxylic acids
    Patent number: 6689907
    Abstract: A mercaptocarboxylic acid of formula (I) is prepared by reacting an unsaturated carboxylic acid of formula (II) with a hydrosulphide of formula ASH, A being an alkali metal cation or a cation NR3R4R5R6+, R3 to R6 each representing H or a hydrocarbon radical, or of formula Q(SH)2, Q being an alkaline-earth metal cation, by acidifying the resulting reaction medium in order to obtain the desired compound (I). According to the present invention, the reaction is carried out with a supply of H2S other than that supplied by the neutralization of the acid (II). In particular, H2S is introduced into the medium by a direct external supply. H2S can also be produced in situ by reacting the hydrosulphide with at least one acid introduced into the medium. The compound (I) is obtained with a very good selectivity.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: February 10, 2004
    Assignee: Atofina
    Inventor: Yves Labat
  • Multilayer structure which includes a tie based on a polyolefin grafted by an acrylic monomer
    Publication number: 20040023037
    Abstract: The present invention relates to a multilayer structure comprising:
    Type: Application
    Filed: September 17, 2003
    Publication date: February 5, 2004
    Applicant: ATOFINA
    Inventors: Martin Baumert, Romain Severac
  • Aqueous dispersions of polymerizable reactants and a water incompatible catalyst sorbed on an inorganic particulate carrier and polymers produced thereby
    Publication number: 20040024116
    Abstract: Aqueous compositions containing polymerizable components and a water incompatible catalyst for the polymerization reaction sorbed onto an inorganic particulate carrier, polymers produced thereby and articles coated with said polymers are provided. The invention also relates to water incompatible catalyst sorbed onto on an inorganic particulate carrier for aqueous coatings and the coatings produced by reactions catalyzed with the water incompatible catalyst sorbed onto an inorganic particulate carrier in an aqueous matrix.
    Type: Application
    Filed: July 30, 2003
    Publication date: February 5, 2004
    Applicant: ATOFINA Chemicals, Inc.
    Inventor: William D. Honnick
  • Hot-melt adhesives based on polyamide-block graft copolymers
    Publication number: 20040024127
    Abstract: The present invention relates to a hot-melt adhesive composition comprising:
    Type: Application
    Filed: February 26, 2003
    Publication date: February 5, 2004
    Applicant: ATOFINA
    Inventors: Martin Baumert, Francois Court, Christian Laurichesse
  • Process for the manufacture of aqueous solutions of unsaturated quaternary ammonium salts
    Patent number: 6683203
    Abstract: This process for the manufacture of an aqueous solution of the unsaturated quaternary ammonium salt corresponding to the formula (I), by reaction, in the presence of water, of N,N-dimethylaminoethyl acrylate (DAMEA) with a quaternizing agent of formula (II), is characterized in that the said reaction is carried out continuously in a rotating disc agitated column, with introduction of the quaternizing agent in the column bottom and introduction of the DAMEA and the water in the column top, the said reaction being carried out at a temperature of 35 to 60° C. and under a pressure of 10 to 20 bar.  R—Cl  (II) R=methyl or benzyl radical.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: January 27, 2004
    Assignee: Atofina
    Inventors: Thierry Druzkowski, Gilles Herbst, Serge Tretjak, Alain Riondel
  • Water dispersible polyamides with ethylenically unsaturated ends
    Patent number: 6680364
    Abstract: The invention describes polyamides having both strongly hydrophilic groups and unsaturated groups, the polyamides consequently being water-dispersible and curable. The hydrophilic groups are distributed along the chain, whereas the unsaturated groups are located at the ends. The polyamides of the invention are useful in many applications, especially in the preparation of intimate blends of polyamides with vinyl, acrylic and/or styrene polymers.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: January 20, 2004
    Assignee: Atofina
    Inventor: Reinhard Linemann
  • Crosslinkable aqueous fluoropolymer based dispersions
    Patent number: 6680357
    Abstract: Acrylic Modified Fluoropolymers based on vinylidene fluoride polymers are disclosed wherein the acrylic phase is capable of entering into crosslinking reactions. The final cured products provide superior solvent extractability resistance to the fluoropolymer phase.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: January 20, 2004
    Assignee: ATOFINA Chemicals, Inc.
    Inventors: Lotfi Hedhli, Larry Wempe
  • Compositions for mitigating coke formation in thermal cracking furnaces
    Patent number: 6673232
    Abstract: The invention relates to a combination of compounds and a process using such combination useful for reducing or preventing coke formation in thermal cracking furnaces such as ethylene steam crackers.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: January 6, 2004
    Assignee: Atofina Chemicals, Inc.
    Inventor: Michael J. Lindstrom
  • Preparation of carboxylic esters catalyzed by a sulphonic acid
    Patent number: 6673959
    Abstract: The preparation of a carboxylic ester by direct reaction of a carboxylic acid and an alcohol catalyzed by a sulphonic acid R—SO3H is carried out in the presence of a solid comprising tertiary amine functions.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: January 6, 2004
    Assignee: Atofina
    Inventor: Christian Gancet
  • Method for making monomers with two quarternary amino group and (co)polymers obtained from said monomers
    Patent number: 6673884
    Abstract: To prepare compound (I), a quaternising agent R3—X⊖ is introduced into a solution, in an organic solvent or a mixture of organic solvents, of a compound of formula (III), at a temperature of 35 to 80° C., and the reaction is then allowed to continue at said temperature until compound (III) has disappeared completely or substantially completely, after which water is added and then an aqueous solution of compound (I) is separated and the water removed as necessary. R1=H or —CH3; R2=one of —CH3, —C2H5, —C3H7 and —C4H9; the two R3 are the same or different and each represents one of —CH3, —C2H5, —C3H7, —C4H9 and —CH2C6H5; and the two X⊖ are the same or different and each represents Cl⊖ or Br⊖.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: January 6, 2004
    Assignee: Atofina
    Inventors: Alain Riondel, Denis Tembou N'Zudie, Marc Esch, Vladimir Chaplinski, Didier Vanhoye
  • Fluoropolymer blends
    Publication number: 20040001928
    Abstract: Multi-phase blends of VDF-based polymers are provided which are useful in a variety of applications such as wire and cable, pipe and liner applications, and rotational molding.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Applicant: ATOFINA Chemicals, Inc.
    Inventors: Nafih Mekhilef, Saeid Zerafati
  • Conductive polymeric composite material with a resistance which is self-regulated by the temperature
    Publication number: 20040001954
    Abstract: The present invention relates to a composite material comprising, by weight, the total being 100% : A) 40 to 90% of PVDF homopolymer or copolymer crystallized essentially in the &bgr; form, B) 10 to 60% of a conductive filler, C) 0 to 40% of a crystalline or semi-crystalline polymer, D) 0 to 40% of a filler other than C, such that the crystals in the &bgr; form are nucleated on the surface of the particles of the conductive filler. This material is conductive with a resistance which is self-regulated by the temperature. It shows an increase in the resistance as a function of the temperature (PTC or “Positive Temperature Coefficient” effect), so that the intensity stabilizes at an equilibrium temperature.
    Type: Application
    Filed: June 30, 2003
    Publication date: January 1, 2004
    Applicant: ATOFINA
    Inventors: Alexander Korzhenko, Emmanuel Rastelletti, R.G Sharpe-Hill
  • Process for manufacturing the chloride of 1,3-bis- (dimethylbenzylammonium) isopropyl, acrylate alone or mixed with other monomers, and corresponding (co) polymers
    Patent number: 6670508
    Abstract: A compound of formula (I) is prepared alone or in combination with at least one monomer of formula (II): the quaternizing agents benzyl chloride is introduced into a solution, in a solvent selected from compounds of the formulae (I) and (II) and mixtures of these, of the compound of formula (III) at a temperature of from 35 to 60° C., and then water is added and the reaction is allowed to proceed to complete or substantially complete conversion of the compound (III), an aqueous solution of desired compound (I) is isolated where appropriate with at least one compound (II), if this or these have/has been used as solvent, and the water is removed where appropriate.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: December 30, 2003
    Assignee: Atofina
    Inventor: Alain Riondel
  • Aqueous dispersions of polymerizable reactants and a water incompatible catalyst sorbed on an inorganic particulate carrier
    Patent number: 6669835
    Abstract: Aqueous compositions containing polymerizable components and a water incompatible catalyst for the polymerization reaction sorbed onto an inorganic particulate carrier, polymers produced thereby and articles coated with said polymers are provided. The invention also relates to water incompatible catalyst sorbed onto on an inorganic particulate carrier for aqueous coatings and the coatings produced by reactions catalyzed with the water incompatible catalyst sorbed onto an inorganic particulate carrier in an aqueous matrix.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: December 30, 2003
    Assignee: ATOFINA Chemicals, Inc.
    Inventor: William D. Honnick
  • Thermoformable multilayer film for the protection of substrates and objects obtained
    Patent number: 6667101
    Abstract: The present invention relates to a thermoformable multilayer film comprising in succession: a protective layer (A); a transparent layer (B) comprising (by weight the total amount being 100%) 0 to 100% of a fluoropolymer (B1) and 100 to 0% of a polymer (B2) essentially consisting of alkyl (meth)acrylate units; a layer (C) based on a polyamide with amine terminal groups; a layer (D) consisting of a polyolefin functionalized by an unsaturated carboxylic acid anhydride; a bonding layer (E) made of a polyolefin, said film being obtained by coextruding the various layers, said film being used to cover various substrates, for example by injection-moulding the substrate in the melt onto the multilayer film placed in the bottom of an injection mould, the layer (A) of the film being placed against the wall of the mould.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: December 23, 2003
    Assignee: Atofina
    Inventors: David Silagy, Jose Teixeira Pires, Philippe Bussi, Anthony Bonnet
  • Process for the preparation of porous powders formed of copolyesteramides and powders thus obtained
    Patent number: 6663962
    Abstract: For the preparation of powders formed of copolyesteramides by anionic polymerization, at least one lactam and at least one lactone are copolymerized in solution in a solvent in the presence of a catalyst and of an activator, the solvent being a solvent of the lactam and the powders being insoluble in the solvent. Preferably at least two lactams and at least one lactone are copolymerized, and the copolymerization is preferably carried out in the presence of a finely divided organic or inorganic filler. The copolymerization is preferably carried out in the presence of an N,N′-alkylenebisamide, such as ethylenebisstearamide (EBS) disclosed in EP 192 515, or generally amides of formula R1-NH—CO—R2, in which R1 can be replaced by an R3-CO—NH— or R3-O— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: December 16, 2003
    Assignee: Atofina
    Inventors: Christophe Le Crom, Roland Guerin
  • Blowing agent blends
    Publication number: 20030225165
    Abstract: Foam blowing agent blends of trans-1,2-dichloroethylene and one or more pentanes are provided, as are polyol premixes and foam compositions containing such blends. The resulting foams exhibit dramatic improvement in fire resistance.
    Type: Application
    Filed: September 24, 2002
    Publication date: December 4, 2003
    Applicant: ATOFINA Chemicals, Inc.
    Inventors: Jinhuang Wu, Douglas R. Dillon
  • Vinylidene fluoride polymer having a fraction of non-transferred chains and its manufacturing process
    Publication number: 20030225208
    Abstract: The invention is a PVDF (polyvinylidene fluoride) homopolymer or copolymer, the comonomer being chosen from compounds containing a vinyl group capable of being opened by the action of free radicals in order to be polymerized and which contains, directly attached to this vinyl group, at least one fluorine atom, a fluoroalkyl group or a fluoroalkoxy group such that:
    Type: Application
    Filed: July 16, 2002
    Publication date: December 4, 2003
    Applicant: ATOFINA
    Inventor: Thierry Pascal
  • Blowing agent blends
    Publication number: 20030225176
    Abstract: Foam blowing agent blends of trans-1,2-dichloroethylene and one or more pentanes are provided, as are polyol premixes and foam compositions containing such blends. The resulting foams exhibit dramatic improvement in fire resistance.
    Type: Application
    Filed: June 3, 2002
    Publication date: December 4, 2003
    Applicant: ATOFINA Chemicals, Inc.
    Inventors: Jinhuang Wu, Douglas R. Dillon