Patents Assigned to Solvay (Societe Anonyme)
  • Pentafluoroethane production method
    Patent number: 7067707
    Abstract: Process for the manufacture of pentafluoroethane, according to which tetrafluoroethylene is subjected to reaction with an organic nitrogenous base hydrofluoride at a temperature of greater than 100° C. and not exceeding 160° C.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: June 27, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Eberhard Piepho, Vincent Wilmet, Olivier Buyle
  • Method for preparing latex
    Patent number: 7067578
    Abstract: Process for the preparation of latices by batchwise radical polymerization of one or more monomers, comprising the participation, in the polymerization, of: (a) one or more fine dispersions of one or more finely dispersed monomers and (b) one or more seed latices of one or more seeding polymers.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: June 27, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventor: Henri Massillon
  • Method for recycling a plastic material
    Patent number: 7056956
    Abstract: Process for recycling a plastic, according to which the plastic is brought into contact with a solvent capable of dissolving the same and the plastic dissolved in the solvent is precipitated using a non-solvent in the presence of a phase-separating agent, in which the phase-separating agent is compatible with the solvent and incompatible with the non-solvent, and is also present when the plastic is brought into contact with the solvent, and improves the dissolution of the plastic by the solvent.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: June 6, 2006
    Assignee: SOLVAY (Societe Anonyme)
    Inventors: Bernard Vandenhende, Jean-Philippe Dumont
  • Ureins derived from ?, ?, diamino acids and process for their preparation
    Patent number: 7030214
    Abstract: Ureins are obtained by reaction, in basic medium, between an N?-(aryloxycarbonyl)diamino acid and a compound containing a free amino group. The chirality of the compounds is outstandingly well preserved.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: April 18, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Roland Callens, Georges Blondeel, Marc Anteunis, Frank Becu
  • Process for the preparation of an aqueous dispersion of halogenated vinyl polymers involving a basic after-treatment
    Patent number: 7026384
    Abstract: The invention relates to a process for the preparation of an aqueous dispersion of halogenated vinyl polymers by polymerization, according to which, after polymerization, a basic agent is added in an amount such that the pH of the aqueous dispersion is less than approximately 5. The invention also relates to the aqueous dispersion obtained, which can be coated onto polymeric substrates made of paper or of regenerated cellulose.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: April 11, 2006
    Assignee: SOLVAY (Société Anonyme)
    Inventors: Yves Vanderveken, Bernard Guenaire, Xavier Bacque
  • Compositions comprising 1,1,1,3,3-pentafluorobutane and use of these compositions
    Patent number: 7022253
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: April 4, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Polymer compositions comprising telomers and articles or parts using these compositions
    Patent number: 7019068
    Abstract: Composition comprising one or more polymers and one or more substances selected from telomers having a number average degree of telomerization of less than or equal to 8.0 (substances A) and optionally from substances such as diesters of phthalic acid or diesters of saturated aliphatic ?,?-dicarboxylic acids (substances B), the weight of substance(s) A plus substance(s) B together relative to the weight of the composition being greater than 20%, on the one hand, and the weight of substance(s) A relative to the weight of substance(s) A plus substance(s) B together being greater than 20%, on the other hand. Articles or parts of articles manufactured using this composition.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: March 28, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Vincent Bodart, Fredy Declerck
  • Extrusion head for expanded plastic tubes
    Patent number: 7008577
    Abstract: An extrusion head for the manufacture of tubes including at least one layer of expanded plastic by extruding a stream of molten plastic containing a blowing agent through an annular passage cross section made in the extrusion head. The stream of molten plastic containing the blowing agent spreads out circumferentially and welds itself to itself by the recombining of the two stream fronts. The extrusion head is equipped with a special-purpose thermal regulation device allowing the molten plastic containing the blowing agent to be heated or cooled after the stream fronts have recombined.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: March 7, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Claude Dehennau, Martine Kaszacs
  • Process for the preparation of 1-chloro-1-fluoroethane and/or 1,1-difluoroethane
    Patent number: 7009083
    Abstract: The invention relates to a process for the preparation of 1-chloro-1-fluoroethane and 1,1-difluoroethane by reaction of vinyl chloride with hydrogen fluoride, in an organic solvent consisting of at least one saturated halogen-containing hydrocarbon.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: March 7, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pascal Pennetreau, Francine Janssens
  • Use of an acaricidal powder
    Publication number: 20060040031
    Abstract: Use of a powder comprising more than 40% by weight of sodium bicarbonate, for its acaricidal effects in the storage of cereals.
    Type: Application
    Filed: December 18, 2003
    Publication date: February 23, 2006
    Applicant: Solvay (SOciete Anonyme
    Inventors: Jean-Philippe Pascal, Nicolas Palangie
  • Structures with multiple polymeric layers
    Patent number: 6982106
    Abstract: Multilayer polymer structures comprising a layer (A) based on at least one halohydrocarbon polymer linked to a layer (C) based on at least one olefin polymer via a layer (B) containing from 100% to 10% by weight of at least one grafted olefin polymer and from 0 to 90% by weight of at least one halohydrocarbon polymer, the grafted olefin polymer being obtained by grafting a polymerizable monomer, a functional oligomer or a functional telomer onto a preactivated olefin polymer; process for obtaining them and use thereof.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: January 3, 2006
    Assignee: SOLVAY (Societe Anonyme)
    Inventors: Vincent Bodart, Jean-Marie Oreins, Guy Laurent, Fredy Declerck, Alexandra Malinova, Nadia Torres, Bernard Boutevin
  • Thermoplastic halogenated polymer compositions, method for preparing same and use thereof
    Patent number: 6979715
    Abstract: Thermoplastic halogenated polymer compositions characterized by an RMFI value of between 1.1 and 6; process for preparing them; use for the manufacture of films, sheets, panels, foamed tubing, tubes, pipes, foams, bottles or products that are theromoformed and/or moulded; use of the foamed tubing for the sheathing of power cables.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: December 27, 2005
    Assignee: Solvay (Societe Anonyme)
    Inventors: Dino Manfredi, Fernand Gauthy, Nestor Maquet
  • Sludge treatment method
    Publication number: 20050258105
    Abstract: Process for the treatment of a sludge containing heavy metals and organic matter according to which foaming of the sludge is brought about and it is dried.
    Type: Application
    Filed: October 16, 2003
    Publication date: November 24, 2005
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventors: Rene Derie, Guy Depelsenaire, Ange Nzihou
  • Method for synthesis of 5-(3-pyridylmethylene-)imidazolidine-2,4-dione
    Patent number: 6967253
    Abstract: Process for the synthesis of 5-(3-pyridylmethyl)imidazolidine-2,4-dione, according to which 5-(3-pyridylmethylene)imidazolidine-2,4-dione is subjected to a hydrogenation reaction.
    Type: Grant
    Filed: September 2, 2002
    Date of Patent: November 22, 2005
    Assignee: Solvay (Societe Anonyme)
    Inventor: Roland Callens
  • Sludge inerting method
    Patent number: 6962562
    Abstract: Process for rendering inert a sludge (1) comprising heavy metals and organic matter, according to which phosphoric acid (2) is added to the sludge and the latter is subjected to calcination (6). A hydraulic binder (9) is mixed with the product of the calcination (7) and mixed with water (8). The resulting mixture (11) is subjected to setting and curing.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: November 8, 2005
    Assignee: Solvay (Societe Anonyme)
    Inventors: Guy Depelsenaire, René Derie
  • Process for rendering an ash inert, artificial pozzolana obtained by means of the said process
    Patent number: 6962119
    Abstract: Process for rendering inert an ash originating from the incineration of municipal waste, according to which the ash is subjected successively to treatment (19) with a water-soluble phosphate (20) in the presence of water, under conditions adjusted to crystallize hydroxyapatite and/or whitlockite, and to calcination (22). Artificial pozzolana, obtained by subjecting an ash originating from the incineration of municipal waste to such an inerting process.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: November 8, 2005
    Assignee: Solvay (Societe Anonyme)
    Inventors: Claude Criado, Fabrice Giraud, Jean-Emmanuel Aubert, Bernard Husson
  • Polymer composition including a cyclic olefin copolymer
    Publication number: 20050238830
    Abstract: Polymer composition comprising a cyclic olefin polymer (COP) and a syndiotactic PP (s-PP) is described. A film including a layer comprising such a composition and specific applications thereof is also described.
    Type: Application
    Filed: May 12, 2003
    Publication date: October 27, 2005
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventors: Petrus Karsten, Piet De Vries
  • Method and installation for extracting a monomer from an aqueous slurry containing a polymer
    Patent number: 6956101
    Abstract: Process and installation for extracting a monomer from an aqueous broth of a polymer, in which, after the broth has been heated, the broth is subjected to a depressurization in a depressurization chamber and is then introduced into a vertical column, divided into several chambers, on which are superimposed perforated plates, where the broth is flushed with an ascending stream of inert gas.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: October 18, 2005
    Assignee: Solvay (Societe Anonyme)
    Inventors: Philippe Taranti, Mario Golin
  • Polyolefins and process for manufacturing them
    Publication number: 20050192407
    Abstract: Process for producing polyolefins, comprising the following steps: a) grafting of acid groups onto polyolefins by means of a graftable monomer bearing at least one functional group chosen from a carbonyl and an acid anhydride, optionally in the presence of another graftable monomer bearing a vinyl unsaturated group and, optionally, one or more aromatic rings; b) purification, consisting in removing at least some of the graftable monomer bearing at least one functional group chosen from a carbonyl and an acid anhydride that has not reacted with the polyolefins; c) neutralization of the acid groups by at least one neutralizing agent. Polyolefin obtained.
    Type: Application
    Filed: April 6, 2005
    Publication date: September 1, 2005
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventor: Fernand Gauthy
  • Method for making a bipolar membrane and use of resulting bipolar membrane
    Patent number: 6924318
    Abstract: A process for producing a bipolar membrane is described in which a cationic membrane undergoes a treatment with a salt from a group 8 metal, an anionic membrane undergoes a treatment with a salt of a transition metal not belonging to group 8, and then the two membranes are conjoined and, before and/or after having been conjoined, the membranes are brought into contact with a treatment solution selected from alkaline aqueous solutions, aqueous metal sulphate solutions and aqueous metal sulphite solutions.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: August 2, 2005
    Assignee: SOLVAY (Societe Anonyme)
    Inventors: Ellenio Mischi, Davide Mantione, Alessandra Pastacaldi, Luc Botte