Patents Assigned to Solvay & Cie
  • Process for producing, by blown film extrusion, a sleeve of vinyl chloride-based resin, at least one face of which is matte in appearance
    Patent number: 4997616
    Abstract: The extruded sleeve is cooled at the end of the die by a circulation of a refrigerant fluid whose temperature To satisfies the relationship: ##EQU1## G being equal to: ##EQU2## Tm and V being the mean temperature of the resin at the exit of the die and its mean extrusion velocity,Tc is a temperature characteristic of the extruded resin,.rho., Cp and .lambda. are the density, the specific heat and the thermal conductivity of the resin,H is the height of the die gap in the refrigerated zone,L is the length of the refrigerated zone.
    Type: Grant
    Filed: October 6, 1989
    Date of Patent: March 5, 1991
    Assignee: Solvay & Cie
    Inventors: Claude Dehennau, Serge Dupont
  • Process for the electrolytic manufacture of alkali metal sulphide
    Patent number: 4992148
    Abstract: Process for the manufacture of alkali metal sulphide, in which an electrolysis cell is used in which a membrane which is selectively permeable to cations separates an anode chamber containing an anode from a cathode chamber containing a cathode, an electrolyte containing alkali metal is electrolyzed in the anode chamber and an aqueous solution of alkali metal polysulphide is electrolyzed simultaneously in the cathode chamber.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: February 12, 1991
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventor: Edgard Nicolas
  • Copper etching bath and method of using
    Patent number: 4981553
    Abstract: Baths for the chemical polishing of copper or copper alloy surfaces, comprising, in aqueous solution, hydrogen peroxide, chloride ions, phosphoric acid and phosphate and hydrogenphosphate ions, in quantities adjusted so as to impart a pH of between 1.25 and 3 to the bath.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: January 1, 1991
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Daniel Tytgat, Stefaan Magnus
  • Process for the manufacture of a mixed metal oxide powder, and mixed metal oxide powders
    Patent number: 4968498
    Abstract: Process for the manufacture of a mixed metal oxide powder, in which at least one metal alcoholate is hydrolyzed in the presence of at least one metal oxide or hydroxide and of an acidic organic compound containing more than 6 carbon atoms in the molecule. The process is applicable to the production of barium titanate powders.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: November 6, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Henri Wautier, Luc Lerot
  • Process for the manufacture of a fluorinated hydrocarbon
    Patent number: 4968850
    Abstract: The invention relates to a process for the manufacture of a fluorinated hydrocarbon by the reaction of hydrogen fluoride with an unsaturated chlorinated hydrocarbon in the liquid phase in the presence of a catalyst constituted by a tin compound and of an additive constituted by an organophosphorus compound.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: November 6, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: James Franklin, Francine Janssens
  • Structures with multiple polymeric layers comprising a layer of vinyli-dene fluoride polymer bonded to a layer of plasticized vinyl chloride polymer and use of these structures for the manufacture of flexible packaging
    Patent number: 4959269
    Abstract: The vinylidene fluoride polymer layer is bonded to that of plasticized vinyl chloride polymer by means of a mixture of adhesives consisting of a copolymer of vinyl acetate and of ethylene and of a copolymer of vinyl chloride and of vinyl acetate, the said mixture containing from 36 to 95% by weight of vinyl acetate and exhibiting a dynamic viscosity equal to at least 55 kPa s at 100.degree. C. and 11 s.sup.-1.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: September 25, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventor: Claude Dehennau
  • Use of guanidine-related compounds comprising a substituted tetraphenylborate ion in solution phase peptide synthesis
    Patent number: 4954616
    Abstract: Use of a guanidine-related compound in solution phase peptide synthesis, the guanidine-related compound including a tetraphenylborate ion and having the general formula: ##STR1## wherein R denotes an organic radical including at least one amine group, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 denote inorganic or organic groups independently of each other.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: September 4, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Roland Callens, Andre Collin
  • Process for removing a coating containing niobium from a substrate
    Patent number: 4950359
    Abstract: Cleaning baths for the removal of a coating containing niobium on a substrate, consisting of an aqueous solution of hydrogen peroxide and of alkali metal hydroxide. The coating is treated with the bath, to remove it from the substrate by dissolving.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: August 21, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Gerard Parissis, Lucien Clerbois
  • Process for the preparation of an expandable vinyl plastisol
    Patent number: 4931478
    Abstract: Process for the preparation of an expandable vinyl plastisol capable of yielding cellular products containing a nitrogen-based blowing agent and a zinc salt as accelerator of decomposition of the blowing agent. The accelerator, which is preferably zinc chloride, is incorporated in the plastisol in the form of a solution in a liquid carrier.The process results in cellular products consisting of uniform fine cells without any major change in color.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: June 5, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventor: Jean-Luc Preat
  • Process for the manufacture of a powder of mixed metal oxides, and mixed metal oxide powders
    Patent number: 4929436
    Abstract: Process for the manufacture of a powder of mixed metal oxides by cohydrolysis of metal alcoholates in the presence of an acidic organic compound and mixed metal oxide powders in which the molar relationships R.sub.1 and R.sub.2 of a metal oxide to the sum of the metal oxides in the powder and in a particle of the powder are such that ##EQU1## The process applies to powders of zirconia doped with yttrium oxide.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: May 29, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Franz Legrand, Luc Lerot, Patricia De Bruycker
  • Use of guanidine-related compounds comprising a tetraphenyl-borate ion in solution phase peptide synthesis
    Patent number: 4923966
    Abstract: Use of a guanidine-related compound in solution phase peptide synthesis, the guanidine-related compound comprising a tetraphenylborate ion and having the general formula: ##STR1## wherein R denotes an organic radical comprising at least one amine group.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: May 8, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Roland Callens, Andre Collin
  • Compositions containing biosynthetic pesticide products, processes for their production and their use
    Patent number: 4915943
    Abstract: The compositions contain a biosynthetic pesticide product, preferably originating from microorganisms of the genus Bacillus, in suspension in a liquid and at least one substance of general formula: ##STR1## in which R represents a hydrogen atom, a halogen atom, or a salt derived from this substance.The substance has a bacteriocidal or bacteriostatic action.The compositions are effective against insects.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: April 10, 1990
    Assignee: Solvay & CIE (Societe Anonyme)
    Inventors: Ignace Gago, Lucien Charmoille, Rene Detrox
  • Conductive polymers derived from 3-alkylthiophenes, a process for manufacturing them and electroconductive devices containing them
    Patent number: 4909959
    Abstract: The subject of the invention is mainly an electrically conductive polymer containing repeated units derived from 3-alkythiophenes in which the alkyl substituent contains from six to nine carbon atoms.The invention also relates to a process for manufacturing these polymers and to electroconductive devices containing them.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: March 20, 1990
    Assignee: Solvay & Cie (societe Anonyme)
    Inventors: Marc Lemaire, Jean Roncali, Robert Garreau, Francis Garnier, Etienne Hannecart
  • Process for the oxychlorination of ethylene and catalyst compositions for the oxychlorination
    Patent number: 4910354
    Abstract: The invention relates to a process for the oxychlorination of ethylene by means of a catalyst composition comprising an alumina support impregnated with cupric chloride, magnesium chloride and a chloride of an alkali metal chosen from sodium and lithium. The oxychlorination performed in this manner makes it possible to obtain an excellent yield without the reactor being corroded by the catalyst composition employed.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: March 20, 1990
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Helmut Derleth, Robert Walter, Gunter Weidenbach, Michel Strebelle
  • Compositions based on vinylidene fluoride polymers which have a reduced smoke-generating capacity
    Patent number: 4898906
    Abstract: Compositions based on vinylidene fluoride polymers which have a reduced smoke-generating capacity, comprising an effective amount of a molybdenum derivative, such as the molybdate of calcium, zinc or aluminium, as a smoke reducer.The compositions are very particularly suitable for the manufacture of shaped articles used in building and in aeronautics.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: February 6, 1990
    Assignee: Solvay & Cie
    Inventor: Etienne Hannecart
  • Process for the neutralization of a layer of acidic water over a sediment comprising a humic substance
    Patent number: 4889641
    Abstract: Process for the neutralization of a layer of acidic water over a sediment comprising a humic substance, according to which blocks of a sodium compound are made to fall through the water layer and to enter the sediment at least partially.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: December 26, 1989
    Assignee: Solvay & Cie
    Inventor: Herman Dessart
  • Flexible compositions based on vinyl chloride polymers comprising poly-.epsilon.-caprolactone
    Patent number: 4889892
    Abstract: The compositions contain, as vinyl chloride polymers, copolymers of vinyl chloride and of alkyl acrylates in which the alkyl radicals, consisting of linear or branched chains, contain from 1 to 10 carbon atoms and have an initial Shore A hardness not exceeding 85. They are suitable for the production of very diverse flexible articles, especially in the medical field (pouches for blood and for physiological fluids), the motor vehicle field (various profiles and seals) and the building industry (sealing sheets).
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: December 26, 1989
    Assignee: Solvay & Cie
    Inventors: Pierre Malfroid, Qui Long Nguyen, Jean-Marie Blondin, Jean-Paul Burnay
  • Composite sheet for impervious coating of construction components
    Patent number: 4885210
    Abstract: Composite sheet for the impervious coating of construction components which are covered with a water-repellent hydrocarbon material (for example, bitumen or expanded polystyrene), comprising at least two superposed layers based on flexible polyvinyl chloride, in which the surface of the layer intended to be placed on the hydrocarbon material is subjected to a cold plasma treatment.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: December 5, 1989
    Assignee: Solvay & Cie. (Societe Anonyme)
    Inventor: Walter D. Vedove
  • Plastisols based on vinyl chloride polymers, and use of plastisols for coating sheet metal
    Patent number: 4882376
    Abstract: The vinyl chloride polymers forming part of the composition of the plastisols result from the polymerization of vinyl chloride in aqueous medium with the aid of sulphosuccinamate(s). After gelling at 120.degree.-140.degree. C., the plastisols based on such polymers have an excellent adhesiveness to metal. They are more particularly suitable for coating sheet metal processed by electrostatic spraying.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: November 21, 1989
    Assignee: Solvay & Cie
    Inventors: Serge Dusoleil, Jean-Luc Preat, Odon Barthelemy
  • Coated seeds and process for preparing them
    Patent number: 4879839
    Abstract: The seeds are coated by means of a polyester the melting temperature of which is low.The process consists in treating the seeds by means of a solution of the polyester in an organic solvent or by means of the polyester in the liquid or molten state.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: November 14, 1989
    Assignee: Solvay & Cie. (Societe Anonyme)
    Inventors: Ignace Gago, Rene Detroz