Patents Represented by Attorney Steven D. Boyd

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  • Continuous method for preparing ethyl lactate
    Patent number: 7297809
    Abstract: The invention concerns a continuous method for preparing ethyl lactate by esterifying lactic acid with ethanol, in the presence of a catalyst which comprises reacting said lactic acid with ethanol in an initial ethanol/lactic acid mol ratio not less than 2.5, in the presence of a catalyst, at a reflux of the reaction medium of about 100° C. under absolute pressure ranging between 1.5 to 3 bars.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: November 20, 2007
    Assignee: Arkema France
    Inventors: Georges Martino-Gauchi, Rémy Teissier
  • Copper chemical mechanical polishing solutions using sulfonated amphiprotic agents
    Patent number: 7297669
    Abstract: A family of slurries useful in modifying exposed surfaces of wafers for semiconductor fabrication are provided along with methods of modifying exposed surfaces of wafers for semiconductor fabrication utilizing such a family of working slurries, and semiconductor wafers.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: November 20, 2007
    Assignee: Arkema Inc.
    Inventors: Nicholas Martyak, Glenn Carroll
  • Method of producing 1,1-difluoroethane and application thereof for the production of 1,1-difluoroethylene
    Patent number: 7294747
    Abstract: Process for the manufacture of 1,1-difluoroethane by liquid-phase fluorination of 1,2-dichloroethane using hydrofluoric acid in the presence of a Lewis acid as catalyst and of FeCl3 as cocatalyst. Process for the manufacture of 1,1-difluoroethylene employing it.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: November 13, 2007
    Assignee: Arkema France
    Inventor: Phillipe Bonnet
  • Scorch-retardant composition
    Patent number: 7262250
    Abstract: The present invention relates to the prevention of scorching before crosslinking of a thermoplastic and/or elastomeric composition with peroxides or azo compounds. This is achieved by using a family of specific nitroxides as additive.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: August 28, 2007
    Assignee: Arkema France
    Inventors: Fabien Debaud, Alfredo Defrancisci, Olivier Guerret, Jacques Kervennal
  • Antiskinning compound and compositions containing them
    Patent number: 7253222
    Abstract: The invention relates to anti-skinning agents containing mixtures of organic compounds (combinations of additives), whereby the organic compounds are selected from the groups of (a) organic hydroxylamines and (b) alkylamines and/or alkyl alkanolamines and also relates to compositions containing the combination, especially oxidatively drying paints or coating compositions and article coated with such oxidatively drying paints or coating compositions.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: August 7, 2007
    Assignee: Arkema Inc.
    Inventors: Daniel Alford, Jr., Paul David Fellenger, Jianfeng Lou, Nicholas Michael Martyak
  • Method for purifying (meth)acrylic acid by oxidising a gaseous substrate
    Patent number: 7253313
    Abstract: The present invention relates to a method for purifying (meth)acrylic acid obtained by oxidizing propane, propylene, acrolein, isobutane, isobutene, ter-butyl alcohol, (meth)acrolein and mixtures thereof by sending the gaseous reaction mixture to the bottom of a countercurrent absorption column (C1) which is supplied at the top with at least one type of hydrophobic heavy solvent, sending the flow (2) from the bottom of column (C1) to a light component separation column (C2) and sending the flow from the base of column (C2), stream (4) to a separation device made up of three sections, exhaustion (S1), concentration (S2) and rectification (S3) respectively in order to extract pure (meth)acrylic acid.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: August 7, 2007
    Assignee: Arkema France
    Inventors: Michel Fauconet, Jean-Marie Destenay
  • Composition comprising a nitroxide, a promoter and optionally a free-radical initiator
    Patent number: 7226964
    Abstract: The present invention relates to the prevention of scorching before crosslinking of a thermoplastic and/or elastomeric composition with peroxides or azo compounds. This is achieved by using a nitroxide in combination with at least one crosslinking promoter (promoter) chosen from group (P) consisting of compounds containing at least one double bond, which may be difunctional or polyfunctional.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: June 5, 2007
    Assignee: ARKEMA France
    Inventors: Fabien Debaud, Alfredo Defrancisci, Olivier Guerret, Jacques Kervennal
  • Alkoxyamines derived from beta-phosphorylated nitroxides, and use thereof for preparing polymerized or non-polymerized mono- or polyalkoxyamines
    Patent number: 7214810
    Abstract: The invention relates to the use of alkoxyamines of formula (I): for the preparation of polymerized or non-polymerized mono- or polyalkoxyamines of formula (II):
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: May 8, 2007
    Assignee: Arkema France
    Inventors: Jean-luc Couturier, Olivier Guerret, Denis Bertin, Didier Gigmes, Sylvain Marque, Paul Tordo, Pierre-emmanuel Dufils
  • Preparation of substituted alkanesulfonates from 2-hydroxyalkanesulfonates
    Patent number: 7208599
    Abstract: The present invention relates to a process for the preparation of substituted alkanesulfonates by the reaction of an aqueous metal substituted 2-hydroxyethanesulfonate with a nucleophile. 2-Alkylaminoalkanesulfonate is formed when the nucleophile is an amine. The invention also relates to the optimization of reaction conditions to produce an optimum yield.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: April 24, 2007
    Assignee: Arkema Inc.
    Inventors: Glenn T. Carroll, Gary S. Smith, Gary E. Stringer
  • Antiskinning compound and compositions containing them
    Patent number: 7201796
    Abstract: The invention relates to a coating material, paint or finish which contains as anti-skinning agents a combination of at least two organic and/or inorganic oxygen scavengers and also relates to compositions containing the combination, especially oxidatively drying paints or coating compositions and articles coated with such oxidatively drying paints or coating compositions.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: April 10, 2007
    Assignee: Arkema Inc.
    Inventors: Nicholas Michael Martyak, Daniel Alford
  • Process for the preparation of polyalkoxyamines which can be used as initiators for the radical polymerization of polyfunctional living (CO)polymers
    Patent number: 7199214
    Abstract: The present invention is directed to a process for the preparation of polyalkoxyaminies from monoalkoxyamine(s) of formula (I) and of at least one polyunsaturated compound of formula (II): and the preparation of polyfunctional living (co)polymers by polymerization by the radical route of one or more vinyl monomers in the presence of the polyalkoxyamines thus prepared.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: April 3, 2007
    Assignee: Arkema France
    Inventors: Jean-Luc Couturier, Olivier Guerret, Stéphanie Magnet
  • Stabilization of alkaline hydrogen peroxide
    Patent number: 7169237
    Abstract: A stabilized basic aqueous hydrogen peroxide composition is disclosed. The composition contains about 0.3 wt % to about 15 wt % of hydrogen peroxide; water; and a stabilizer system that contains about 10 ppm to about 1% of a stannate stabilizer; 10 ppm to about 1% of a phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents; and 10 ppm to about 1% of an aromatic chelating agent or a mixture of aromatic chelating agents. The composition comprises less than about 10 ppm pyrophosphate, preferably no pyrophosphate; and has a pH greater than 7.0, preferably about 8.0 to about 10.5.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: January 30, 2007
    Assignee: Arkema Inc.
    Inventors: Xue Wang, Keith Robert Genco
  • Stabilized thickened hydrogen peroxide containing compositions with a mixture of stabilizers
    Patent number: 7169743
    Abstract: Stabilized thickened hydrogen peroxide containing compositions are disclosed. The compositions contain a stabilizer system made up of a stannate stabilizer, a phosphorus containing stabilizer or a mixture of phosphorus containing stabilizers; and an aromatic chelating agent or a mixture of aromatic chelating agents. The compositions are suitable for use as disinfectants, as cleaning agents, and in various personal care applications such as hair care and tooth whitening.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: January 30, 2007
    Assignee: Arkema Inc.
    Inventors: Xue Wang, Keith Genco, Claire Jaubert, Benoit Requieme
  • Aqueous solutions containing dithionic acid and/or metal dithionate for metal finishing
    Patent number: 7163915
    Abstract: This invention relates to solutions of dithionic acid and/or dithionate salts which use in metal finishing processes such those used for the cleaning, activating, electroplating, electroless plating, conversion coating and/or other pre-treatment or post-treatment of a metallic surface. In particular the solutions are a useful electrolyte for the electroplating of metallic coatings, especially, Sn, Cu, Ni, Zn and precious metals, onto metal or plastic substrates and/or other surfaces.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: January 16, 2007
    Assignee: Arkema Inc.
    Inventors: Michael D. Gernon, Sandra L. Bodar
  • Blowing agent blends
    Patent number: 7144926
    Abstract: Foam blowing agent blends containing trans-1,2-dichloroethylene and one or more hydrofluorocarbons are provided, as are foam compositions containing such blends. The resulting foams exhibit dramatic improvement in fire performance.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: December 5, 2006
    Assignee: Arkema Inc.
    Inventors: Steve M. Galaton, Christopher Bertelo
  • Purification of hydrochloric acid obtained as by-product in the synthesis of methanesulfonic acid
    Patent number: 7128890
    Abstract: Process for purifying the hydrochloric acid obtained as by-product in the synthesis of MSA, characterized in that the gaseous flow of hydrogen chloride evacuated from the top of the synthesis reactor is placed in contact in a treatment column, counter-currentwise, with a flow consisting of an aqueous solution of an acid chosen from methanesulfonic acid, hydrochloric acid or a mixture of these two acids, at a temperature of between 80 and 130° C.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: October 31, 2006
    Assignee: Arkema France
    Inventor: Jean Ollivier
  • Blowing agent blends
    Patent number: 7105578
    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: Grant
    Filed: September 24, 2002
    Date of Patent: September 12, 2006
    Assignee: Arkema Inc.
    Inventors: Jinhuang Wu, Douglas R. Dillon
  • Foam premixes having improved processability
    Patent number: 7098254
    Abstract: A method for improving the processability of foam premixes containing HFC and/or pentane-based blowing agents in polyols is provided, which method comprises adding trans-1,2-dichloroethylene to said premix in an amount effective to enhance said processability.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: August 29, 2006
    Assignee: Arkema Inc.
    Inventors: Jinhuang Wu, Laurent S. J. Caron
  • Method for obtaining polybutadiene-based aqueous dispersions
    Patent number: 7071270
    Abstract: The invention relates to a method for preparing butadiene-based aqueous dispersions in the presence of at least one azocarboxylic acid ester.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: July 4, 2006
    Assignee: Arkema
    Inventors: Damien Colombie, Frédéric Lemahieu, Denis Temboun N' Zudie
  • Method for directly obtaining hydrogen peroxide
    Patent number: 7060244
    Abstract: The invention concerns a method for making an aqueous solution of hydrogen peroxide. More particularly, it concerns a method for making hydrogen peroxide directly from hydrogen and oxygen, finely dispersed in an aqueous acid medium comprising a catalyst and at least a surfactant. The invention also concerns a device for implementing said method.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: June 13, 2006
    Assignee: Arkema
    Inventor: Michel Devic