Patents Assigned to Institut National de Recherche Chimique Appliquee
  • Patent number: 5185099
    Abstract: These materials having the appearance and the consistency of gels are characterized in that they contain a very high proportion of water, of the order of from 60 to 98% weight, and that their structure is a microcellular compartmentalized structure having a very high density of water droplets enclosed in a fine surfactant membrane and contained in a continuous oil/surfactant phase, this structure being impermeable to water and permeable to hydrophobic compounds soluble in fluorocarbons.Use in the field of optics, fillers, cosmetics, pharmacology, lubricants, textiles, photochemistry and electrodynamics.
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: February 9, 1993
    Assignee: Institut National de Recherche Chimique Appliquee
    Inventors: Jean-Jacques Delpuech, Louis Matos, El Mostafa Moumni, Jean-Claude Ravey, Claude Selve, Guy Serratrice, Marie-Jose Stebe, Aime Cambon, Gerard Thiollet
  • Patent number: 4938871
    Abstract: The invention relates to the preparation and use of novel extracting agents and novel propane diamides for the recovery of actinides and/or lanthanides.These extracting agents are constituted by propane diamides of formula: ##STR1## For example, the extracting agent can be 2-hexyl-N,N'-dimethyl-N,N'-dibutyl-propane diamide or 2-ethoxyethyl-N,N'-dimethyl-N,N'-dibutyl-propane diamide.They are more particularly used for the recovery of actinides and/or lanthanides present in the trivalent state in an acid aqueous solution, particularly in a nitric solution.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: July 3, 1990
    Assignees: Commissariat a l'Energie Atomique, Institut National de Recherche Chimique Appliquee
    Inventors: Claude Musikas, Pierre Hoel, Gerard Thiollet, Louisette Lafosse
  • Patent number: 4882223
    Abstract: Non symmetrical hollow fibres presenting a relatively dense layer (`skin`) (H) of a very small thickness (<1 .mu.m) at their outer periphery, which is bound to a so called `open` structure of which the porosity increases in the direction to the inner face; said porous structure comprises microvoids (1) shaped like elongate fingers open to the inside. The invention also relates to the method for obtaining such a symmetrical hollow fibres by known spinning techniques by dry-wet process, by adding to the solution for spinning the polymer in the solvent at least one particular additive and by adding a particular fluid through the hole of the extruded product. Finally, the invention aims at applying the hollow fibres in question to various fields and particularly in ultra-filtration or micro-filtration, in dialysis, reverse osmosis, in gas permeation or pervaporation or they may also be used as supports for liquid membranes.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: November 21, 1989
    Assignees: Institut National de Recherche Chimique Appliquee (IRCHA), Centre National de la Recherche Scientifique
    Inventors: Philippe Aptel, Jean-Michel Espenan
  • Patent number: 4859797
    Abstract: The invention relates to non ionic fluorinated compounds having the formula R.sub.F C hd 2H.sub.4 S(R)H, wherein R designates a C.sub.2 H.sub.4 X unit with X=O or S, or a chain exclusively comprising several such units, and two consecutive units can be identical or different, and R.sub.F is a perfluorinated alkyl group exclusive of compounds having the formula:R.sub.F C.sub.2 H.sub.4 SC.sub.2 H.sub.4 OH, R.sub.F C.sub.2 H.sub.4 S(C.sub.2 H.sub.4 O).sub.2 H and R.sub.F (C.sub.2 H.sub.4 S).sub.2 Hand the mixtures of such compounds, in particular, the mixtures of the above defined products differing from one another by the length of their perfluorinated chain, but having the hydrophilic portion of the molecule identical from one product to the other.To obtain them, a compound having the formula R.sub.F C.sub.2 H.sub.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: August 22, 1989
    Assignee: Institut National de Recherche Chimique Appliquee
    Inventors: Jean-Pierre Lampin, deceased, Jeannine Robillart Lampin, heir, Corinne Lampin, heir, Sophie Lampin, heir, Aime Cambon, Francois Szonyi, Jean-Jacques Delpuech, Guy Serratrice, Gerard Thiollet, Louisette Lafosse
  • Patent number: 4770807
    Abstract: The invention relates to novel extracting agents and novel propane diamides, their use for the recovery of actinides and/or lanthanides and their preparation process. These extracting agents are constituted by propane diamides of formula: ##STR1## For example, the extracting agent can be 2-hexyl-N,N'-dimethyl-N,N'-dibutyl-propane diamide or 2-ethoxyethyl-N,N'-dimethyl-N,N'-dibutyl-propane diamide. They are more particularly used for the recovery of actinides and/or lanthanides present in the trivalent state in an acid aqueous solution, particularly in a nitric solution.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: September 13, 1988
    Assignees: Commissariat a l'Energie Atomique, Institut National de Recherche Chimique Appliquee
    Inventors: Claude Musikas, Pierre Hoel, Gerard Thiollet, Louisette Lafosse
  • Patent number: 4610887
    Abstract: The present invention relates to a process for treating fermented juices by reversed osmosis in particular for increasing concentration thereof in organic substances. The fermented product is treated under a pressure of from 30 to 120 bars and a strong turbulency by passing it through at least one semi-permeable membrane having a high retention rate with respect to organic substances of molecular weights lower than 200.
    Type: Grant
    Filed: October 16, 1984
    Date of Patent: September 9, 1986
    Assignee: Institut National de Recherche Chimique Appliquee
    Inventors: Pierre Galzy, Guy Moulin, Richard Dick, Gerard Mavel
  • Patent number: 4504683
    Abstract: The phospholes and P-functional phospholes correspond to the general formula: ##STR1## in which: R.sub.1 and R.sub.2 are identical or different and represent hydrogen or a lower alkyl group of C.sub.1 to C.sub.4 such as a methyl group, and R.sub.3 represents an aryl group (such as --C.sub.6 H.sub.5) or a substituted aryl group (such as --CH.sub.2 C.sub.6 H.sub.5) or an alkyl group (such as --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7 to C.sub.12 H.sub.25) or a --(CH.sub.2).sub.n Z group where Z denotes a function of the --COO-alkyl type (such as --COOC.sub.2 H.sub.5), --CH, --CO-aryl (such as --COC.sub.6 H.sub.5), --CO-alkyl (such as --COCH.sub.3) or --OH and n.gtoreq.1.
    Type: Grant
    Filed: May 20, 1981
    Date of Patent: March 12, 1985
    Assignees: Institut National de Recherche Chimique Appliquee (IRCHA), Centre National de la Recherche Scientifique
    Inventors: Anne Breque, Georges Muller, Hubert Bonnard, Francois Mathey, Philippe Savignac
  • Patent number: 4485130
    Abstract: The basic composition comprises, in solution in at least one organic solvent, with or without water, from 10 to 40% of a hard-enable organosilicic compound resulting from a first hydrolysis reaction achieved at a temperature lower than 50.degree. C. in the presence of a carboxylic acid and water on at least one R'Si(OR).sub.4 alkoxysilane with n=1 or 2, in association or without association with at least one Si(OR").sub.4 -alkoxysilane, then, a second hydrolysis at a temperature lower than 40.degree. C. after removal of the formed volatile solvents and addition of a less volatile solvent and at least one R"'Si(OR.sub.1).sub.3 -alkoxysilane, said reaction being followed with the setting of the pH to between 3.5 and 5.5 by an organic base.
    Type: Grant
    Filed: March 8, 1983
    Date of Patent: November 27, 1984
    Assignee: Institut National de Recherche Chimique Appliquee
    Inventors: Jean-Pierre Lampin, Yves Leclaire
  • Patent number: 4284520
    Abstract: These polysulphides are derived from at least two olefins and are suitable as lubricating and industrial oil additives. They have a proportion of sulphur of 22 to 45% for a practically zero content of chlorine and a refractive index n.sub.D.sup.20 ranging from 1.515 to 1.580.
    Type: Grant
    Filed: May 15, 1979
    Date of Patent: August 18, 1981
    Assignee: Institut National de Recherche Chimique Appliquee
    Inventors: Jean Bolle, Andre Dabir
  • Patent number: 4250222
    Abstract: A process is disclosed for manufacturing finished and semi-finished articles from mixtures of normally incompatible synthetic resin scrap materials. The process comprises coarsely grinding thermoplastic scrap materials containing two or more mutually incompatible thermoplastic resins and possibly up to 25 parts % by weight of foreign materials, incorporating into the coarsely ground thermoplastic resin mixture through the application of heat, pressure, or a sequential or simultaneous application of heat and pressure, from about 5 to about 25 parts by weight of a fibrous material, the individual fibers in said fibrous material having an average length equal to at least three times the average size of the fragments constituting the coarsely ground thermoplastic resin mixture, and finally, forming the resin/fiber mass into finished or semi-finished article employing known and conventional techniques.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: February 10, 1981
    Assignee: Institut National de Recherche Chimique Appliquee
    Inventors: Gerard F. G. Mavel, Emile M. J. Morel, Gabriel M. Richert
  • Patent number: 4121022
    Abstract: The invention relates to a semi-permeable membrane for lead acid batteries. The membrane has a microporous structure comprising a first polymer and a second polymer closely mixed together, the first polymer being poly (2-hydroxyethylmethacrylate), known as reticulated poly HEMA, characterized by the fact that the second polymer comprises one polymer or a mixture of several different polymers chosen from among polyoxyethylene glycol, polyvinylpyrrolidone, polyacrylic acid, polymethacrylic acid, copolymers of acrylic and methacrylic acid, polyacrylates and polymethacrylates of alkyl, and the copolymers of the acrylates and methacrylates of alkyls.
    Type: Grant
    Filed: December 13, 1977
    Date of Patent: October 17, 1978
    Assignees: Compagnie Generale d'Electricite, Institut National de Recherche Chimique Appliquee Ircha
    Inventors: Richard Dick, Georges Feuillade, Robert Gadessaud, Louis Nicolas
  • Patent number: 4109066
    Abstract: The invention relates to a semi-permeable membrane for a lead-acid battery. The membrane has a microporous structure comprising a first polymer and a second polymer intimately mixed together, and is characterized by the fact that the first polymer is chosen from among the following polymers: polyacrylic acid, polymethacrylic acid, a copolymer with a high proportion of acrylic or methacrylic acid, a mixture of these polymers, the average molecular weight of these polymers lying between 10,000 and a few millions and preferably between 50,000 and one million, the second polymer being soluble in water.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: August 22, 1978
    Assignees: Compagnie Generale d'Electricite, Institut National de Recherche Chimique Appliquee Ircha
    Inventors: Richard Dick, Georges Feuillade, Robert Gedessaud, Louis Nicolas
  • Patent number: 3939694
    Abstract: A method and apparatus for measuring the concentration of solid particles in a gaseous phase which consists in passing a solid particles laden gas through at least one fluidized bed of balls having a diameter greater than that of the largest particles of said gas in order that said balls are not carried away by the ascending air stream. During their passage through the fluidized bed, these particles collide with the balls of the fluidized bed giving rise to a triboelectrification phenomenon and the electric current collected by the metallic walls of the container in which the fluidized bed is provided, is measured by a suitable electric or electronic control system upon separation of particles from the balls.
    Type: Grant
    Filed: February 26, 1974
    Date of Patent: February 24, 1976
    Assignee: Institut National de Recherche Chimique Appliquee
    Inventors: Jean-Claude Guichard, Claude Chauvelier