Patents Assigned to Solvay & Cie
  • Patent number: 6478828
    Abstract: A process for crystallization of an inorganic substance includes preparing a supersaturated solution of the inorganic substance to be crystallized in a solvent which is a liquid; forcing a stream of the supersaturated solution upwardly through successively a fluidized bed distributor of a fluidized bed reactor and a bed of crystals arranged above the fluidized bed distributor with a pressure effective to cause fluidization of the bed of crystals, the fluidized bed distributor dividing the stream of supersaturated solution into thin, substantially parallel and vertical jets; maintaining the fluidized bed distributor at a temperature which is uniform and at which the inorganic substance to be crystallized from the supersaturated solution is lower than or equal to the concentration corresponding to saturation; and controlling the temperature of the fluidized bed distributor to cause the stream of supersaturated solution in the fluidized bed distributor to undergo a temperature change which is insufficient to des
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: November 12, 2002
    Assignee: Solvay & Cie (Société Anonyme)
    Inventors: Léon Ninane, Léopold Detry
  • Patent number: 5601778
    Abstract: The relationship between the average degree of roughness of the faces of rough appearance, expressed in microns, and the percentage by weight of units derived from vinyl acetate in the copolymer of which the film consists is greater than 0.019.The film is extruded in the form of an extruded sleeve which is cooled in the die by a circulation of a coolant fluid whose temperature T satisfies the relationship: ##EQU1## in which Tc is the temperature at which the Napierian logarithm of the relationship between the length at break and the initial length of a test specimen of the copolymer has a value of 87% of its value at 180.degree.Tm is the mean temperature of the copolymer as it leaves the diea is equal to 0.24G is given by the relationship .rho..times.Cp.times.V.times.H.sup.2 /.lambda..times.Lin which.rho. is the density of the copolymerCp is the specific heat of the copolymerV is the mean flow velocity of the copolymer through the extrusion dieH is the height of the gap between the core and the extrusion die.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Assignee: Solvay & Cie
    Inventors: Claude Dehennau, Serge Dupont, Martin Vonk
  • Patent number: 5403667
    Abstract: An adhesive composite including a layer consisting of a compatibilized composition including at least one polyamide, and at least one propylene polymer which is at least partially modified by a polar monomer and which has a melt flow index (MFI) measured according to ASTM standard D 1238-86 (230/2.16 conditions) higher than 20 g/10 min., preferably, higher than 50 g/10 min., most preferably such that 70 g/10 min..ltoreq.MFI of the propylene polymer .ltoreq.80 g/10 min.; and a layer consisting of at least one other material which is comprised of at least one cellulosic product and which is bonded to the layer consisting of a compatibilized composition.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: April 4, 1995
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventor: Anthony Simoens
  • Patent number: 5362416
    Abstract: Suspensions, in oils, of particles containing a transition metal compound, which are spheroidal and of narrow particle size distribution.These suspensions can be employed in processes for the polymerization of alpha-olefins, carried out in the presence of an organoaluminium activator.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: November 8, 1994
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventor: Jean-Louis Costa
  • Patent number: 5346773
    Abstract: An adhesive composite including a compatibilized composition comprised of at least one polyamide, and at least one propylene polymer which is at least partially modified by a polar monomer and which has a melt flow index (MFI) measured according to ASTM standard D 1238-86 (230/2.16 conditions) higher than 20 g/10 min., preferably, higher than 50 g/10 min., most preferably, such that 70 g/10 min..ltoreq.MFI of the propylene polymer.ltoreq.80 g/10 min.; and at least one other material selected from the group consisting of an organic synthetic polymer, a cellulosic product, and a metal.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: September 13, 1994
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventor: Anthony Simoens
  • Patent number: 5316772
    Abstract: An oral pharmaceutical composition comprises a core containing a drug, a first inner layer coating on the core which contains a drug, and a second inner layer coating on the first inner layer coating which also contains drug. This oral pharmaceutical composition is used especially for treating intestinal diseases.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: May 31, 1994
    Assignee: Solvay & Cie, S.A. (Societe Anonyme)
    Inventors: Raymond W. Jurgens, Jr., Roger D. Graben, Adnan S. Sabir
  • Patent number: 5290322
    Abstract: Process for the manufacture of sodium bicarbonate particles having an ovoid or spherical shape, the process preparing an aqueous solution of sodium bicarbonate, which is supersaturated; circulating the aqueous solution supersaturated in sodium bicarbonate through a bed of crystals in order to cause the bed to be a mobile bed in which the crystals are in continuous motion, and to cause crystallization of the sodium bicarbonate particles and at least partial desupersaturation of the aqueous solution supersaturated in sodium bicarbonate to provide a mother liquor and, withdrawing the sodium bicarbonate particles from the bed.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: March 1, 1994
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Claude Breton, Leon Ninane
  • Patent number: 5286413
    Abstract: A polymer mixture, including at least one conductive polymer which has been dedoped to provide at least one dedoped conductive polymer; and at least one polar polymer. The polymer mixture has outstanding dielectric properties so that the polymer mixture is useful for producing electronic, optoelectrical, electrical and electromechanical devices.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: February 15, 1994
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Etienne Hannecart, Claude Franquinet
  • Patent number: 5284723
    Abstract: The invention relates to electrochemical energy storage devices containing a composition comprising an electrically conductive polymer based on polypyrrole, substituted or otherwise, and ionic groups which comprise an R-sulphate or R-sulphonate group, R denoting an alkyl or aryl radical.The invention also relates to the use of these devices as a supercapacitor or as a rechargeable generator.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: February 8, 1994
    Assignees: Solvay & Cie (Societe Anonyme), Compagnie Generale d'Electricite (Societe Anonyme)
    Inventors: Etienne Hannecart, Elise Destryker, Jean Fauvarque, Anne de Guibert, Xavier Andrieu
  • Patent number: 5279768
    Abstract: The invention relates to a process for the preparation of electrically conductive polymers derived from 3-alkylthiophenes by chemical polymerization of the 3-alkylthiophene by means of a ferric salt, an alkyl halide and water.The invention also relates to electrically conductive devices containing the poly(3-alkylthiophenes) obtained and a thermoplastic polymer.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: January 18, 1994
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Elise Destryker, Claude Franquinet, Etienne Hannecart
  • Patent number: 5262567
    Abstract: A compound useful in the synthesis of peptides containing arginine, and including a guanidine group and an unsubstituted tetraphenylborate ion, and having the formula: ##STR1## wherein A is a hydrogen atom, an amino acid group which is linked by a peptide bond and which may be substituted, a peptide radical which is linked by a peptide bond and which may be substituted, or an aliphatic or aromatic radical effective as a protecting group or an activating group, and wherein Y is an hydroxyl group, a halogen atom, an amino group, an amino acid group which is linked by a peptide bond and which may be substituted, a peptide radical which is linked by a peptide bond and which may be substituted, or an aliphatic or aromatic radical effective as a protecting group or an activating group.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: November 16, 1993
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Roland Callens, Andre Collin
  • Patent number: 5257922
    Abstract: A device for injection moulding plastic articles by the fusible-core technique includes a unit (1) for moulding fusible cores, a unit (2) for injection moulding, a unit (3) for melting and for recovering the fusible cores and a unit (4) for washing the moulded parts. The first two units are served by a mobile transfer robot (5) equipped with a rotatable arm having a ripper adapted to catch a fusible core and a gripper adapted to catch a moulded part. The two latter units are served by a stationary robot for melting (8) which interacts with the transfer robot (5). By programming the various functions performed by the robots, it is possible to carry out in parallel the moulding cycles of fusible cores and of injection moulding of the desired parts with a minimum of non-productive time and hence to obtain an automatic production with a high yield.
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: November 2, 1993
    Assignee: Solvay & Cie.(Societ e Anonyme
    Inventors: Michel Vansnick, Luc De Keyzer
  • Patent number: 5254777
    Abstract: Liquid catalytic system comprising at least one group VIII metal compound, a fatty amine hydrochloride whose melting point is greater than 25.degree. C. and an organic solvent. This catalytic system is suitable for the preparation of vinyl chloride by reacting acetylene with hydrogen chloride.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: October 19, 1993
    Assignee: Solvay & cie (Societe Anonyme)
    Inventors: Michel Strebelle, Andre Devos
  • Patent number: 5254648
    Abstract: The invention relates to a process for the preparation of electrically conducting polymers based on polythiophenes by chemical polymerization of thiophene by means of a ferric salt, an alkyl halide and water.The invention also relates to the electrically conducting devices containing the polythiophenes obtained and a thermoplastic polymer.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: October 19, 1993
    Assignee: Solvay & cie (Societe Anonyme)
    Inventors: Elise Destryker, Etienne Hannecart, Claude Franquinet
  • Patent number: 5247958
    Abstract: The valve, mounted on a vent pipe, allows the passage of gas in both directions, but prevents any escape of liquid fuel. The valve comprises a closed containment 7 equipped with a lower inlet port 8 and with an upper outlet port 9 which are connected to the vent pipe, a stationary circular inner cup 10 kept spaced from the inner wall of the containment and from the inlet port, a vertically displaceable assembly surmounting the cup and comprising a float 13 and a needle 16 which is equipped with a gasket 17 and is fixed to the float and which, in the high position of the assembly, can close off the outlet port 9, and means 11, 14, 15 for causing an upward displacement of the assembly as a result of an inclination of the containment 7. Furthermore, the annular space between the cup 10 and the inner wall of the containment 7 is profiled so as to form a Venturi tube 18 which is kept in relationship via at least one passage 20 with the volume 19 located between the cup 10 and the base of the float 13.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: September 28, 1993
    Assignee: Solvay & Cie
    Inventors: Eric Deparis, Serge Pergebois
  • Patent number: 5236627
    Abstract: The invention relates to a composition of electrically conductive polymers chosen from polypyrrole and/or substituted polypyrrole and ionic groups containing a 2-ethylhexylsulphate group.The invention also relates to a process for obtaining this composition.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: August 17, 1993
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Etienne Hannecart, Elise Destryker
  • Patent number: 5230935
    Abstract: Multilayer composites coextruded with the use of polyolefins and of impact-reinforced impervious resin compositions based on hydrolysed copolymers of vinyl acetate and ethylene comprising, as an additive improving the impact strength, elastomeric copolymers of ethylene and propylene which are modified by grafting an .alpha.,.beta.-ethylenically unsaturated carboxylic acid and, preferably, by maleic anhydride.The coextruded multilayer composites are very particularly suitable for the manufacture of fuel storage vessels combining impact strength and high imperviousness to petrol and to petrol/alcohol mixtures.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: July 27, 1993
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Didier Delimoy, Pierre De Longree
  • Patent number: 5221786
    Abstract: The invention relates to a process for the preparation of electrically conducting polymers based on polythiophenes by chemical polymerization of thiophene by means of a ferric salt, an alkyl halide and water.The invention also relates to the electrically conducting devices containing the polythiophenes obtained and a thermoplastic polymer.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: June 22, 1993
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Elise Destryker, Etienne Hannecart, Claude Franquinet
  • Patent number: 5209820
    Abstract: Baths for the chemical polishing of stainless steel surfaces which comprise a mixture of hydrochloric acid, nitric acid and phosphoric acid, a substituted or unsubstituted hydroxybenzoic acid and an amine in aqueous solution.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: May 11, 1993
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Daniel Tytgat, Nathalie Barthelemy
  • Patent number: 5204423
    Abstract: A process for the preparation of a polymer which is electrically conductive and which is based on polythiophene, the process including polymerizing thiophene in a reaction medium including thiophene, from 2.5 to 20 moles of an anhydrous ferric salt per mole of thiophene, from 0.04 to 1 liter of an alkyl halide per gram of thiophene, and from 0.1 to 5% by weight of water introduced into the reaction medium based on the amount of alkyl halide.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: April 20, 1993
    Assignee: Solvay & Cie
    Inventors: Claude Franquinet, Etienne Hannecart, Elise Destryker