Patents Assigned to Atofina
  • Patent number: 6599990
    Abstract: Molecular weight modification of polypropylene by 4-(t-amylperoxy)-4-methyl-2-pentanol and polypropylene so modified suitable for handling and packaging food, beverages and pharmaceuticals and for use in medical devices is disclosed.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: July 29, 2003
    Assignee: ATOFINA Chemicals, Inc.
    Inventors: Leo Kasehagen, Robert Kazmierczak, Robert Cordova, Terry Myers
  • Patent number: 6596060
    Abstract: The present invention relates to a water-repellant composition consisting essentially of at least one hydrophobic agent and at least one solvent which is compatible with the at least one hydrophobic active agent, this solvent being other than a fluorinated hydrocarbon, wherein the solvent is organic compound comprising at least one oxygen-comprising functional group and in that the hydrophobic active agent is a compound of an organopolysiloxane of formula (I): where P is an integer ranging from 0 to 150 and each R independently represents an alkyl or alkoxy group with 1 to 10 carbon atoms, a cycloalkyl group with 3 to 10 carbon atoms, a phenyl group, an aminated group, a halogen or a hydrogen, with the condition that at least one R is an aminated group.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: July 22, 2003
    Assignee: Atofina
    Inventor: Pascal Michaud
  • Patent number: 6596398
    Abstract: A solar-control glass that has acceptable visible light transmission, absorbs near infrared wavelength light (NIR) and reflects midrange infrared light (low emissivity mid IR) along with a preselected color within the visible light spectrum for reflected light is provided. Also provided is a method of producing the improved, coated, solar-controlled glass. The improved glass has a solar energy (NIR) absorbing layer comprising tin oxide having a dopant such as antimony and a low emissivity control layer (low emissivity) capable of reflecting midrange infrared light and comprising tin oxide having fluorine and/or phosphorus dopant. A separate iridescence color suppressing layer as described in the prior art is generally not needed to achieve a neutral (colorless) appearance for the coated glass, however an iridescence suppressing layer or other layers may be combined with the two layer assemblage provided by the present invention.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: July 22, 2003
    Assignee: Atofina Chemicals, Inc.
    Inventors: David A. Russo, Clem S. McKown, Christophe Roger, Jeffrey L. Stricker
  • Publication number: 20030130429
    Abstract: The invention relates to a composition based on polypropylene homopolymer or copolymer and on an impact modifier comprising an ethylene/alkyl acrylate copolymer. This composition comprises substantially between 1 and 40% by weight of impact modifier and it may comprise an ethylene-based copolymer taken from the group comprising ethylene/acrylate copolymers, vinyl acetate copolymers, polyethylene obtained by metallocene catalysis or mPE and linear low-density polyethylene or LLDPE.
    Type: Application
    Filed: August 7, 2002
    Publication date: July 10, 2003
    Applicant: ATOFINA
    Inventors: Alain Bouilloux, Christophe Lacroix
  • Patent number: 6590052
    Abstract: The process for the continuous preparation of homopolymers or copolymers by free-impinging-jet micromixing of fluids formed (1) of monomer(s) and (2) of an initiator system consists in micromixing the said fluids (1) and (2) and in recovering the mixture of these fluids in the form of a resultant jet Jr, originating from the point of impingement (I).
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: July 8, 2003
    Assignee: Atofina
    Inventors: Xavier Marcarian, Christophe Navarro, Laurent Falk, Fernand Pla
  • Patent number: 6590130
    Abstract: The invention relates to a process for the preparation of 1,1,1-trifluoro-2,2-dichloroethane (F123). This process consists in bringing 1,1,1-trifluoro-2-chloroethane (F133a) into contact with chlorine in the presence of hydrogen fluoride and of a fluorination catalyst. The F133a can be obtained by chlorination of trichloroethylene and the F123 can subsequently be fluorinated to F125.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: July 8, 2003
    Assignee: Atofina
    Inventors: Eric Jorda, Eric Lacroix, Sylvain Perdrieux
  • Publication number: 20030124288
    Abstract: The present invention relates to a multilayer tube comprising, in its radial direction from the outside inwards:
    Type: Application
    Filed: November 22, 2002
    Publication date: July 3, 2003
    Applicant: ATOFINA
    Inventors: Joachim Merziger, Christophe Lacroix
  • Publication number: 20030124289
    Abstract: The present invention relates to a multilayer tube comprising, in its radial direction from the outside inwards:
    Type: Application
    Filed: November 25, 2002
    Publication date: July 3, 2003
    Applicant: ATOFINA
    Inventors: Jun Yamamoto, Joachim Merziger, Christophe Maldeme
  • Patent number: 6586547
    Abstract: New and novel copolymers of vinylidene fluoride and hexafluoropropylene having lower or no crystallinity together with processes for their manufacture and use are disclosed.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: July 1, 2003
    Assignee: ATOFINA Chemicals, Inc.
    Inventors: Ramin Amin-Sanayei, Mehdi Durali
  • Patent number: 6584783
    Abstract: A conduit for transporting non-volatile liquids is provided in which the conduit's internal surfaces have a surface energy lower than that of the nonvolatile liquid.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: July 1, 2003
    Assignee: ATOFINA Chemicals, Inc.
    Inventors: Sivakumar Gopalnarayanan, Scott R. Gaboury
  • Patent number: 6582591
    Abstract: This process for the transportation of a batch of naphtha in a pipeline, the prime purpose of which is to transport crude oil, is characterized in that the batch of naphtha, bracketed by batches of condensates, namely a head batch of condensate and a tail batch of condensate, is conveyed in the pipeline and, on arrival, the batch of naphtha is recovered between a point in time at the earliest at the end or substantially at the end of the passage of the head condensate/naphtha interface region and a point in time at the latest at the beginning or substantially at the beginning of the appearance of the naphtha/tail condensate interface region.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: June 24, 2003
    Assignee: Atofina
    Inventors: Jean-Marc Jaubert, Alain Niklaus
  • Patent number: 6579965
    Abstract: For the anionic polymerization of lactams: (a) (i) a catalyst capable of creating a lactamate and (ii) a regulator chosen from amides of formula R1-NH—CO-R2, in which R1 can be substituted by an R3-CO—NH— or R3-0— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical, are dissolved in the molten lactam, (a1) the solution from stage (a) is cooled, optionally to the solid state in a form which can be divided, (a2) the product from stage (a1) is optionally reheated to a temperature below the polymerization temperature of the lactam, (a3) optionally, the product from stage (a1) is reheated and is maintained at a temperature between the melting temperature of the lactam and 15° C. above, and (b) the produce from any one of stages (a1), (a2) or (a3) is introduced into a mixing device or mold and is then heated to a temperature sufficient to obtain the bulk polymerization of the lactam.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: June 17, 2003
    Assignee: Atofina
    Inventors: Nicola Hoogen, Andreas Wollny, Heike Faulhammer, Rolf Muelhaupt
  • Publication number: 20030104150
    Abstract: The present invention relates to a conductive composition comprising (i) a fluoropolymer, (ii) an electrically conductive product and (iii) a triblock copolymer ABC, the three blocks A, B and C being linked together in this order, each block being either a homopolymer or a copolymer obtained from two or more monomers, block A being linked to block B and block B to block C by means of a covalent bond or an intermediate molecule linked to one of these blocks via a covalent bond and to the other block via another covalent bond, and such that:
    Type: Application
    Filed: December 3, 2001
    Publication date: June 5, 2003
    Applicant: ATOFINA
    Inventors: Anthony Bonnet, Francois Court, Ludwik Leibler
  • Patent number: 6569967
    Abstract: The invention concerns alkoxyamines derived from &bgr;-phosphorous nitroxides corresponding to formula (I). Said compounds can be used as (co)polymerization initiators of at least a monomer polymerizable by radical polymerization.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: May 27, 2003
    Assignee: Atofina
    Inventors: Jean-Luc Couturier, Christiane Henriet-Bernard, Christophe Le Mercier, Paul Tordo, Jean-Francois Lutz
  • Patent number: 6569822
    Abstract: It is possible to make very concentrated solutions of N-coco-, N-oleyl- or N-tallow-propylenediamine acetate which can be diluted without formation of gels or of lumps in a water/dissolving agent solvent. A simple dilution test is given which allows the suitable compositions to be selected. Use of their diluted solutions, in particular for the lubrication of bottles on conveyor lines.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: May 27, 2003
    Assignee: Atofina
    Inventor: Francois Guillemet
  • Publication number: 20030092844
    Abstract: The present invention relates to a composition comprising isotactic polypropylene homo- or copolymer obtained by metallocene catalysis (A), abbreviated to miPP, and isotactic polypropylene homo- or copolymer obtained by Ziegler-Natta catalysis (B), abbreviated to zniPP, and grafted. It also relates to a coextrusion tie comprising such a composition.
    Type: Application
    Filed: October 11, 2002
    Publication date: May 15, 2003
    Applicant: Atofina
    Inventor: Jean-Laurent Pradel
  • Patent number: 6562311
    Abstract: The invention concerns a method for preparing methyl ethyl ketone azine which consists in: (a) reacting ammonia, hydrogen peroxide and methyl ethyl ketone in the presence of a working solution to form an azine; (b) separating the working solution and the azine possibly containing methyl ethyl ketone which has not reacted and butanol-2; (c) recycling the working solution to step (a) after optional treatment; (d) separating the methyl ethyl ketone and the butanol-2 from the azine. The butanol-2 of the flow in step (d) is either purged or dehydrogenated in MEK and recycled at step (a).
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: May 13, 2003
    Assignee: Atofina
    Inventors: Jean-Pierre Schirmann, Paul Bourdauducq
  • Publication number: 20030088010
    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:
    Type: Application
    Filed: October 11, 2002
    Publication date: May 8, 2003
    Applicant: Atofina
    Inventor: Thierry Senninger
  • Patent number: 6554958
    Abstract: A process for the delignification and bleaching of chemical paper pulps comprising one or more stage(s) of treatment with hydrogen peroxide, at a temperature greater than 100° C. and under high pressure, in the presence of a polymer and of a compound A chosen from potassium hydroxide, sodium hydroxide and alkali metal or alkaline-earth metal carbonates.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: April 29, 2003
    Assignee: Atofina
    Inventor: Michel Devic
  • Patent number: 6555019
    Abstract: Sulfur free, crosslinking, scorch-retarding compositions for compounding and cure of polymers susceptible to cure by free radical initiators are disclosed.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: April 29, 2003
    Assignee: Atofina Chemicals, Inc.
    Inventors: Leonard Henry Palys, Michael Fred Novits, Leo Kasehagen, Fabien Debaud, Luciano Abrigo