Patents Represented by Attorney Steven D. Boyd

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  • Removal of alkyl alkanesulfonate esters from alkanesulfonic acids and other organic media
    Patent number: 7297813
    Abstract: Methods of removing alkyl alkanesulfonate esters from aqueous or anhydrous compositions are provided. The invention provides methods for the conversion of alkyl alkanesulfonate esters of the formula RSO3R? to the corresponding acids of the formula RSO3H. The alkyl alkanesulfonate esters are present in an organic medium, which may contain significant amounts of water or which may be anhydrous or substantially anhydrous. In some embodiments, the invention provides methods for purifying aqueous or anhydrous alkanesulfonic acids by removing alkyl alkanesulfonate esters.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: November 20, 2007
    Assignee: Arkema Inc.
    Inventors: Gary Smith, Robert Cordova, Johnson C. H. Chen, Mabel Chen
  • 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
  • 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
  • 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
  • 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