Abstract

The present invention relates to a material for optically doping a polymer substrate, characterised in that it is formed by poly(methyl methacrylate) and at least two organic photoluminescent materials with a concentration of photoluminescent materials close to the solubility limit of the photoluminescent materials in the MMA between 0.1% and 2% by weight. The invention also relates to a film doped with such a material, as well as a greenhouse covering, a photovoltaic panel implementing such a material, and a method for preparing such a material.

IPC Classes  ?

• C09K 9/02 - Organic tenebrescent materials
• C09K 11/06 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing organic luminescent materials

Abstract

A method for reproducing an acoustic signal from a digital signal, the digital signal being formed of successive bit sequences each having bits representative of the amplitude of an acoustic signal at a time sample, the method including (i) providing a plurality of transducers configured to emit acoustic signals that are wave trains having each a duration lower or equal to the duration of one time sample and including at least one oscillation per time sample, and (ii) successively, for each bit sequence, having each bit associated to at least one of the transducers and independently govern, depending on its value, amplitudes of the acoustic signals emitted by its associated transducers.

IPC Classes  ?

• H04R 1/00 - Details of transducers
• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers

Abstract

An electrochemical device comprises a fluidic cell having an internal volume able to be filled with a fluid and at least one first and one second electrode making contact with the internal volume, wherein at least the first electrode comprises a thin layer made of a conductive material that is optically absorbent at at least one wavelength λ in the visible, near-infrared or near-ultraviolet spectrum, the thin layer being arranged on or in an internal surface of a wall of the fluidic cell which is at least partially transparent to said wavelength λ. An electrochemical apparatus comprises such an electrochemical device and an optical microscope arranged to illuminate the first electrode through the wall at at least said wavelength λ and also to observe it through the wall.

IPC Classes  ?

• H01M 4/06 - Electrodes for primary cells
• B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
• B01L 99/00 - Subject matter not provided for in other groups of this subclass
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids
• H01M 4/02 - Electrodes composed of, or comprising, active material

Abstract

The invention relates to a system (IMUROW) for determining the power (PROW) produced by a rower, said system (IMUROW) comprising at least one oar or paddle (OAR), said at least one oar (OAR) comprising a first inertial unit (IMU1) and a second inertial unit (IMU2), the said oar (OAR) collaborating with a craft (BOAT) which comprises a third inertial unit (IMU3), the system further comprising a module (COMP) for calculating a power (PROW) developed on a blade of said at least one oar (OAR).

IPC Classes  ?

• A63B 24/00 - Electric or electronic controls for exercising apparatus of groups
• A63B 69/06 - Training appliances or apparatus for special sports for rowing or sculling

Abstract

The invention relates to a flameproof polyurethane material (PU) consisting of a plurality of reactive polyol elements (S) and a plurality of reactive diisocyanate elements (H) and at least one reactive diamine or diol element operating as a chain extender (EXT) of the polyurethane (PU). A chain extender at least of the polyurethane material comprises a phosphoriferous oligomer element (R2) of a predefined length (1) having a value within a dispersion interval which is also predefined. The invention further relates to the polyurethanes (PU) produced by the implementation of said method.

IPC Classes  ?

• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 18/69 - Polymers of conjugated dienes
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/40 - High-molecular-weight compounds

Abstract

This invention relates to a method for producing functionalized telechelic oligomers, comprising two steps. The first step relates to bringing a raw material comprising at least one high-molecular-weight polymer comprising at least two unsaturations, into contact with a solution comprising at least one metathesis catalyst and at least one functionalizing agent. The second step relates to the separation of the functionalized telechelic oligomers produced by the metathesis reaction in ionic liquid medium of the first step.

IPC Classes  ?

• C08J 11/22 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
• C08C 2/04 - Removal of catalyst residues
• C08C 19/08 - Depolymerisation
• C08C 19/28 - Reaction with compounds containing carbon-to-carbon unsaturated bonds
• C08L 19/00 - Compositions of rubbers not provided for in groups
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C08C 19/00 - Chemical modification of rubber

Abstract

The invention relates to a method for reproducing an acoustic signal from a digital signal, said digital signal being formed of successive bit sequences each comprising bits representative of the amplitude of an acoustic signal at a time sample, the method comprising the steps of: providing a plurality of transducers configured to emit acoustic signals that are wave trains having each a duration lower or equal to the duration of one time sample and comprising at least one oscillation per time sample, successively, for each bit sequence, having each bit associated to at least one of the transducers and independently governs, depending on its value, amplitudes of the acoustic signals emitted by its associated transducers.

IPC Classes  ?

• H04R 1/00 - Details of transducers

Abstract

An ionic liquid supported organotin reagent of formula (I) A process for manufacturing the ionic liquid supported organotin reagent of formula (I), a process for manufacturing an halogenated or radio-halogenated compound using compound of formula (I), a device for implementing the halogenating process and a kit including the compound of formula (I) are also described.

IPC Classes  ?

• C07F 7/22 - Tin compounds
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
• B01J 19/24 - Stationary reactors without moving elements inside
• C07B 59/00 - Introduction of isotopes of elements into organic compounds
• C07C 69/78 - Benzoic acid esters
• C07D 207/46 - Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with hetero atoms directly attached to the ring nitrogen atom
• C07K 14/765 - Serum albumin, e.g. HSA
• C07K 16/40 - Immunoglobulins, e.g. monoclonal or polyclonal antibodies against enzymes

Abstract

0 of the substrate. Methods for producing a contrast-amplifying support and for observing a sample, or for detecting or assaying at least one chemical or biological species, using such a contrast-amplifying support are provided.

IPC Classes  ?

• G02B 21/34 - Microscope slides, e.g. mounting specimens on microscope slides
• G02B 21/06 - Means for illuminating specimen
• G02B 1/11 - Anti-reflection coatings
• G01N 33/543 - ImmunoassayBiospecific binding assayMaterials therefor with an insoluble carrier for immobilising immunochemicals
• G02B 5/00 - Optical elements other than lenses
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

A method for producing a contrast-amplifying support comprising an absorbing substrate carrying at least one absorbing layer comprises a design step for the support and the following steps: i) choosing an illumination wavelength λ; ii) choosing a material constituting the substrate and exhibiting, at illumination wavelength λ, a complex refractive index N0=n0−jk0 with k0≥0.01; iii) choosing an ambient medium in contact with the layer on the side opposite to the substrate and exhibiting, at illumination wavelength λ, a complex refractive index N3=n3−jk3 with k3≥0; iv) determining a nominal complex refractive index N1=n1−jk1 and a nominal thickness e1 of the layer wherein it behaves in the guize of antireflection layer when illuminated under normal incidence at illumination wavelength λ; and v) choosing a material constituting the layer and exhibiting, at illumination wavelength λ, a complex refractive index whose real and imaginary parts coincide with the nominal complex refractive index.

IPC Classes  ?

• G01N 21/01 - Arrangements or apparatus for facilitating the optical investigation
• G02B 1/02 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of crystals, e.g. rock-salt, semiconductors
• G02B 1/11 - Anti-reflection coatings
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G02B 5/00 - Optical elements other than lenses
• G06F 17/50 - Computer-aided design

Abstract

An acoustically absorbent cell for an acoustic panel, comprising a layer with a porous matrix incorporating a plurality of acoustic resonators between a first face and a second face of the porous matrix is described. The resonators are ordered so as to form at least two substantially parallel rows each comprising at least two resonators and extending along the first and second faces.

IPC Classes  ?

• G10K 11/172 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
• G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Abstract

A method and system are provided for determining the thickness of a thin layer deposited on the surface of a reflective substrate, by means of a multi-wavelength device in a configuration equivalent to a Michelson interferometer. The method consists in: generating (20) an array of collimated light beams intended to illuminate the surface of the thin layer and that of the planar mirror, each beam having a distinct wavelength; occulting (21) the measurement arms, preventing the collimated light beams from being received by the object to be measured, and obtaining (22) a reference image representative of the light intensity issued from the planar mirror; occulting (23) the reference arm, preventing the collimated light beams from being received by the planar mirror, and obtaining (24) a measurement image representative of the light intensity issued from the object to be measured; and determining (25) the thickness of the thin layer from the measurement and reference images obtained.

IPC Classes  ?

• G01B 11/06 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness for measuring thickness

Abstract

The invention relates to a method for producing a nanostructured metal pattern on a carrier, the method comprising the following steps: depositing a polymer layer (2) on the surface of a substrate (101); forming, by indentation (5), an initial pattern in the polymer layer (2) so as to form a nanostructured polymer layer; depositing a metal layer (6) on the nanostructured polymer layer; depositing a layer of adhesive (8) on the metal layer; placing a carrier (9) onto the layer of adhesive; and separating the polymer layer and the carrier secured to the metal layer.

IPC Classes  ?

• B81C 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

The present invention concerns an acoustic transducer capable of converting a sound signal into an electric signal. The transducer comprises a mobile element that is movable under the effect of the sound signal, a fixed element opposite the mobile element, a recess (4), and a dissipative element (3) interposed between the mobile element and the fixed element. The coupled system formed in this way has a natural frequency corresponding to a resonance frequency of the transducer at which the sensitivity of same is at a maximum. The mobile element, the fixed element, the dissipative element and the recess are configured such that the quality factor of the acoustic transducer is greater than two. The recess (4) has a straight prismatic or cylindrical or frustoconical general shape, the mobile element forming a first base of the prism, cylinder or frustum, the fixed element being disposed inside said prism, cylinder or frustum, over the second base of the prism, cylinder or frustum. Such a transducer also incorporates an analogue filtering function for filtering the signal around the natural frequency of same.

IPC Classes  ?

• H04R 19/00 - Electrostatic transducers
• H04R 19/04 - Microphones

Abstract

The invention relates to a conductive material comprising a first phase including a thermoset compound, a second phase, consisting of a smaller volume, including a thermoplastic compound, and a conductive compound, wherein the second phase is dispersed in the first phase, the two phases are bicontinuous, and the conductive compound is situated at the interface between the first and second phases.

IPC Classes  ?

• H01B 1/24 - Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon, or silicon
• C08J 3/00 - Processes of treating or compounding macromolecular substances
• C08J 3/22 - Compounding polymers with additives, e.g. colouring using masterbatch techniques
• C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
• C08K 3/04 - Carbon
• C08L 25/06 - Polystyrene

Abstract

The present invention relates to a circuit for supplying acoustic signals to at least one loudspeaker (LS), this circuit comprising a device for filtering the resonance peak occurring at a certain frequency of the supply current, characterized in that the device for filtering the peak is incorporated into a first bypass branch of the intermediate circuit between at least two converters (A, AO), this filtering device being purely electrical in the form of an impedance (Z3) connected on the one hand, to a point of the intermediate circuit, and, on the other hand to an instrumentation earth, the impedance being termed RLC (Z3), comprising at least one first resistor (R3), at least one first capacitor (C3) and at least one first inductor (L3) arranged in series, the parameters of the first resistor (R3), of the first capacitor (C3) and of the first inductor (L3) being predetermined as a function of the resonance peak to be filtered.

IPC Classes  ?

• H04R 3/08 - Circuits for transducers for correcting frequency response of electromagnetic transducers

Abstract

The present invention concerns a circuit for supplying acoustic signals to at least one loudspeaker (HP) incorporating a device for filtering the resonance peak of said at least one loudspeaker (HP) occurring at a given frequency, characterised in that the device for filtering the resonance peak of said at least one loudspeaker (HP) is incorporated either into the first instrumentation ground circuit or into the feedback loop, said filtering device being purely electrical in the form of an impedance incorporated into the first instrumentation ground circuit or into the feedback loop, the parameters of the impedance being predefined depending on the resonance peak to be filtered of said at least one loudspeaker (HP).

IPC Classes  ?

• H04R 3/08 - Circuits for transducers for correcting frequency response of electromagnetic transducers

Abstract

An electrochemical device comprising a fluid cell (CF) having an inner volume that can be filled with a fluid (EL) and at least one first electrode (CMM) and second electrode (CE) in contact with said inner volume, characterised in that at least said first electrode comprises a thin layer made from a material that is conductive and optically absorbent at least at a wavelength λ in the visible, near infrared or near ultraviolet range, said thin layer being arranged on or in an inner surface of a wall (PT) of said fluid cell that is at least partially transparent to said wavelength λ. An electrochemical apparatus comprising such an electrochemical device and an optical microscope (MO) arranged to illuminate said first electrode through said wall at least at said wavelength λ, and to observe same also through said wall.

IPC Classes  ?

• C25D 5/02 - Electroplating of selected surface areas
• C25D 17/02 - TanksInstallations therefor
• C25D 17/10 - Electrodes
• C25D 17/12 - Shape or form
• C25D 21/12 - Process control or regulation
• G01N 21/75 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
• G01N 21/77 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
• G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour

Abstract

The present invention relates to an ionic liquid supported organotin reagent of formula (I). The invention further relates to a process for manufacturing the ionic liquid supported organotin reagent of formula (I) and to a process for manufacturing an halogenated or radio-halogenated compound using compound of formula (I). The invention also relates to a device for implementing the halogenating process of the invention and to a kit comprising the compound of formula (I).

IPC Classes  ?

• C07F 7/22 - Tin compounds
• C07B 59/00 - Introduction of isotopes of elements into organic compounds

Abstract

The invention relates to a method for observing a sample under optical microscopy, in incoherent, unpolarised light, using a sample substrate including a contrast-amplifying layer having a complex index of refraction. The invention also relates to a method for detecting or metering at least one chemical or biological species using such a sample substrate.

IPC Classes  ?

• G01N 33/552 - Glass or silica
• G02B 21/06 - Means for illuminating specimen
• G01N 33/543 - ImmunoassayBiospecific binding assayMaterials therefor with an insoluble carrier for immobilising immunochemicals
• G01N 33/551 - ImmunoassayBiospecific binding assayMaterials therefor with an insoluble carrier for immobilising immunochemicals the carrier being inorganic
• G01N 21/359 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
• G01N 21/59 - Transmissivity
• G01N 21/03 - Cuvette constructions
• G01N 21/84 - Systems specially adapted for particular applications
• G02B 21/33 - Immersion oils
• G02B 21/34 - Microscope slides, e.g. mounting specimens on microscope slides

Abstract

The invention relates to a method for producing functionalised telechelic oligomers, comprising two steps. The first step involves bringing a raw material consisting of at least one high-molecular-weight polymer comprising at least two unsaturations into contact with a solution comprising at least one ionic liquid, at least one metathesis catalyst and at least one functionalising agent. The second step involves the separation of the functionalised telechelic oligomers produced by the metathesis reaction in an ionic liquid medium of the first step.

IPC Classes  ?

• C08F 8/50 - Partial depolymerisation
• C08C 19/08 - Depolymerisation
• C08C 19/28 - Reaction with compounds containing carbon-to-carbon unsaturated bonds
• C08J 11/18 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
• C08L 19/00 - Compositions of rubbers not provided for in groups
• C08L 7/00 - Compositions of natural rubber
• C08J 11/22 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
• C08C 2/04 - Removal of catalyst residues

Abstract

The invention relates to a contrast amplifying support (SAC) for the observation of a sample, characterized in that it includes a transparent substrate (MI, SS) supporting at least one absorbing layer (CA), the complex refractive index N1=n1-jk1 and thickness of which are selected such that said layer behaves as an antireflection layer when it is illuminated with normal incidence and with an illumination wavelength l through said substrate, the surface of said layer opposite said substrate being in contact with a transparent ambient medium (AM) having an refractive index n3 that is lower than that of the refractive index n0 of said substrate. The invention also relates to a method for producing such a contrast amplifying support. The invention further relates to a method for observing a sample, or for detecting or assaying at least one chemical or biological species, using such a contrast amplifying support.

IPC Classes  ?

• G01N 21/45 - RefractivityPhase-affecting properties, e.g. optical path length using interferometric methodsRefractivityPhase-affecting properties, e.g. optical path length using Schlieren methods
• G01N 33/50 - Chemical analysis of biological material, e.g. blood, urineTesting involving biospecific ligand binding methodsImmunological testing
• G02B 1/11 - Anti-reflection coatings

Abstract

The invention relates to a method for manufacturing a contrast amplifying substrate (SAC') including an absorbent substrate (SA) supporting at least one absorbent layer (CA'), said method including a step of designing said substrate and including the following steps: i) selecting an illumination wavelength λ; ii) selecting a material constituting said substrate and having, at said illumination wavelength λ, a complex refraction index N0=n0- jk0 where k0≥0,01; iii) selecting an ambient medium in contact with said layer of the side opposite said substrate and having, at the illumination wavelength λ, a complex refraction index N3=n3-jk3 where k3≥0; iv) determining a nominal complex reflection index N1=n1-jk1 and a nominal thickness e1 of said layer such that it behaves as an antireflection layer when illuminated with normal incidence at said illumination wavelength λ; and v) selecting a material constituting said layer and having, at said illumination wavelength λ, a complex refraction index, the real and imaginary parts of which coincide with those of said nominal complex reflection index.

IPC Classes  ?

• G02B 1/11 - Anti-reflection coatings

Abstract

The invention concerns an acoustically absorbent cell (22, 48) for an acoustic panel, comprising a layer (32) having a porous matrix incorporating a plurality of acoustic resonators (A1-A4, Bi-B6) between a first face (30, 54) and a second face (28, 56) of the porous matrix (32). According to the invention, the resonators (A1-A4, Bi-B6) are, for example, ordered in such a way as to form at least two substantially parallel rows (24, 26, 50, 52) each comprising at least two resonators and extending along the first and second faces.

IPC Classes  ?

• G10K 11/172 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Abstract

The present invention relates to a composition, comprising: - at least one non-cross-linked silicone, and - at least one antimicrobial agent dispersed within said silicone, said antimicrobial agent being chosen from the group made up of ionene polymers, and ionic liquids with a molecular mass below 1400 g/mol.

IPC Classes  ?

• A01N 25/10 - Macromolecular compounds
• A01N 47/44 - GuanidineDerivatives thereof
• A01N 43/50 - 1,3-DiazolesHydrogenated 1,3-diazoles
• A01N 57/20 - Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
• A01P 1/00 - DisinfectantsAntimicrobial compounds or mixtures thereof
• A01P 3/00 - Fungicides

Abstract

The present invention concerns a method for modifying the surface of a preformed material comprising a free surface made from fluorinated semi-crystalline polymer comprising: a) a step of heating to a temperature higher than or equal to the melting temperature of the fluorinated semicrystalline polymer and lower than the decomposition temperature of same, b) keeping the material at the reached temperature for a defined time; and c) a step of cooling the material to a temperature higher than the vitreous transition temperature (Tg), whereby the free fluorinated semi-crystalline polymer surface is modified by the spontaneous formation of nano- or micro-objects. It also concerns the material obtained in this way and the use thereof for preparing medical devices, in particular disposable medical devices, for bacteriological analysis and in the field of food.

IPC Classes  ?

• B29C 71/02 - Thermal after-treatment
• B29C 59/00 - Surface shaping, e.g. embossingApparatus therefor
• B29C 59/18 - Surface shaping, e.g. embossingApparatus therefor by liberation of internal stresses, e.g. plastic memory
• C08L 27/12 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogenCompositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms

Abstract

The invention relates to a conductive material comprising a first phase including a thermoset compound, a second phase, consisting of a smaller volume, including a thermoplastic compound, and a conductive compound, wherein the second phase is dispersed in the first phase, the two phases are bicontinuous, and the conductive compound is situated at the interface between the first and second phases.

IPC Classes  ?

• C08J 3/00 - Processes of treating or compounding macromolecular substances
• C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
• C08K 3/04 - Carbon
• C08L 25/06 - Polystyrene
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• C08J 3/22 - Compounding polymers with additives, e.g. colouring using masterbatch techniques
• H01B 1/20 - Conductive material dispersed in non-conductive organic material

Abstract

The present invention relates to novel compounds, having an azlactone function, of formula (I), to be used as multifunctional coupling agents, and to a method for coupling a biomolecule and a target molecule using such a compound. The invention further relates to a diagnosis reagent, to a kit for implementing the coupling method, to a method for separating, detecting and/or characterizing at least one molecule of interest, and to a composition including a compound according to the invention.

IPC Classes  ?

• C07D 263/42 - One oxygen atom attached in position 5
• A61K 31/421 - 1,3-Oxazoles, e.g. pemoline, trimethadione
• A61K 49/00 - Preparations for testing in vivo
• C12Q 1/00 - Measuring or testing processes involving enzymes, nucleic acids or microorganismsCompositions thereforProcesses of preparing such compositions
• G01N 33/53 - ImmunoassayBiospecific binding assayMaterials therefor

Abstract

The invention relates to a method for observing a sample (EO) under optical microscopy, in incoherent, unpolarised light, using a sample substrate (SAC) comprising a contrast-amplifying layer (CA) having a complex index of refraction. The invention also relates to a method for detecting or metering at least one chemical or biological species using such a sample substrate.

IPC Classes  ?

• G01N 21/45 - RefractivityPhase-affecting properties, e.g. optical path length using interferometric methodsRefractivityPhase-affecting properties, e.g. optical path length using Schlieren methods
• B82B 1/00 - Nanostructures formed by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
• G01N 21/55 - Specular reflectivity

Abstract

The present invention relates to a method for preparing complexes comprising amylose assembled with at least one organic molecule of interest. This method according to the invention comprises the following steps: (a) a lipophilization step consisting in grafting a fatty aliphatic chain onto said organic molecule of interest, in order to prepare a lipophilic derivative of said organic molecule of interest, (b) a step of bringing into contact (i) said lipophilic derivative of said organic molecule of interest bearing said grafted fatty aliphatic chain, resulting from said lipophilization step (a), and (ii) said amylose, and (c) a step of forming said amylose/lipophilic derivative of the organic molecule of interest complexes, which steps of bringing into contact and of forming the complexes consist of a hydrothermal protocol with stirring. The present invention also relates to the organic chemical compounds in the form of a complex, comprising amylose assembled with at least one organic molecule of interest, in which said organic molecule of interest is in a lipophilic derived form, bearing a grafted fatty aliphatic chain.

IPC Classes  ?

• A61K 47/48 - Medicinal preparations characterised by the non-active ingredients used, e.g. carriers, inert additives the non-active ingredient being chemically bound to the active ingredient, e.g. polymer drug conjugates

Abstract

A method for manufacturing a composition including telechelic oligomers the ends of which carry reactive functions, the method including the contacting of at least one waste material containing rubber, preferable tire waste, with a chemical degradation agent selected from cleavage agents that are specific for double bonds; and a transfer agent in the presence of a catalysts; at a temperature from 15 to 400° C., preferably from 17 to 35° C.; at ambient pressure. The composition of oligomers that can be prepared by the method is also described.

IPC Classes  ?

• C08C 19/08 - Depolymerisation
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C08J 11/18 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
• C08L 19/00 - Compositions of rubbers not provided for in groups
• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
• C10G 50/00 - Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation
• C08C 19/04 - Oxidation
• C08C 19/00 - Chemical modification of rubber

Abstract

The invention relates to a material having a lamellar, non-centrosymmetric macroscopic structure, essentially consisting of a mixture of at least two populations of objects that are heterogeneous in blocks along an axis, each object consisting of at least two blocks, characterised in that each of said objects is connected to adjacent objects via interactions that involve at least two mutually incompatible blocks of said object and two blocks that are compatible one-to-one with the first of said blocks, and mutually incompatible along the chain of each one of said adjacent objects. The objects can be, in particular, block co-oligomers or copolymers.

IPC Classes  ?

• C08F 297/04 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

Abstract

The novel process for forming metal coatings of the present invention relates to a process for depositing a thin metal coating that has a low average roughness and adheres well to a silica-based substrate.

IPC Classes  ?

• C23C 14/18 - Metallic material, boron or silicon on other inorganic substrates
• C23C 14/02 - Pretreatment of the material to be coated
• C03C 17/40 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal all coatings being metal coatings

Abstract

The invention relates to a device for measuring a heat flux, comprising a thermopile consisting of a plurality of distributed thermojunctions. The device comprises first and second ceramic substrates (Ce1, Ce2). A first face of the first substrate (Ce1) is composed of cavities separated by ceramic spacers (Ca1, Ca2, Ca3, Ca4). The thermopile is placed on a second, planar face of the first substrate, opposite the first face. The spacers of the first substrate are placed beneath every other thermojunction (Tj2, Tj4, Tj6, Tj8) of the thermopile. One face of the second substrate (Ce2)comprises cavities separated by ceramic spacers (Ca5, Ca6, Ca7, Ca8, Ca9). The spacers of the second substrate rest on a thermojunction (Tj1, Tj3, Tj5, Tj7, Tj9) under which no spacer of the first substrate is placed.

IPC Classes  ?

• G01K 17/00 - Measuring quantity of heat
• G01J 5/12 - Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using thermoelectric elements, e.g. thermocouples
• H01L 35/32 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof operating with Peltier or Seebeck effect only characterised by the structure or configuration of the cell or thermocouple forming the device

Abstract

Photo-crosslinkable antifouling compositions, in particular antibacterial, antifungal and anti-algae ones, which include the combination of at least one telechelic oligoisoprene of a particular formula with an agent for crosslinking the oligoisoprene. The antifouling film is obtained by applying a thin layer of such a liquid composition on a substrate and is crosslinked at room temperature by exposure to visible and/or UV radiations. The film can be used for preventing the occurrence of a biofilm on any surface in a humid or aqueous environment, and can be used as an additive for preparing materials with a view to imparting bacteriostatic and/or bactericidal properties thereto.

IPC Classes  ?

• C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
• A01N 31/02 - Acyclic compounds
• A01N 33/12 - Quaternary ammonium compounds
• A01N 37/06 - Unsaturated carboxylic acids or thio-analogues thereofDerivatives thereof
• A01N 43/20 - Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atom with one hetero atom three- or four-membered rings
• C09D 123/22 - Copolymers of isobuteneButyl rubber
• C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
• C08K 5/00 - Use of organic ingredients
• C08K 5/06 - EthersAcetalsKetalsOrtho-esters
• C08K 5/07 - AldehydesKetones
• C08K 5/11 - EstersEther-esters of acyclic polycarboxylic acids

Abstract

The present invention relates to a composition comprising poly(polymethylene)guanidine (PpMG) salt of general formula (I): wherein: n is comprised from 10 to 140; m is comprised from 0 to 35; p is comprised from 2 to 12; and HA is a sulfonic acid, wherein the polymer is not a PpMG salt of formula (I).

IPC Classes  ?

• C08G 73/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups
• C08L 79/00 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups
• C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
• A01N 25/00 - Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of applicationSubstances for reducing the noxious effect of the active ingredients to organisms other than pests
• A61K 33/38 - SilverCompounds thereof
• C09D 5/14 - Paints containing biocides, e.g. fungicides, insecticides or pesticides
• C11D 17/00 - Detergent materials or soaps characterised by their shape or physical properties

Abstract

The present invention relates to a method for preparing aromatic carboxylic acid derivatives by nucleophilic aromatic substitution, which involves reacting an aromatic carboxylic acid derivative supporting only one carboxyl function, or one of the salts thereof, said carboxylic acid derivative supporting, orthogonally to the carboxyl function, a splitting group which is an atom of fluorine or chlorine or an alcoxy group, chiral or otherwise and, in the latter case, a methoxy group is preferred; said carboxylic acid derivative being substituted by at least one electro-attractive group other than the splitting group, preferably by a fluorine atom, with a MNu reagent, wherein M is a metal and Nu is an optionally chiral nucleophile, said nucleophilic aromatic substitution reaction being carried out without a catalyst and without a step of protecting/unprotecting the acid function of the initial compound, said method being selective in that the reaction leads to the formation of ketone derivatives in a very minority fashion during the reaction.

IPC Classes  ?

• C07C 51/353 - Preparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by isomerisationPreparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by change of size of the carbon skeleton
• C07C 227/08 - Formation of amino groups in compounds containing carboxyl groups by addition or substitution reactions, without increasing the number of carbon atoms in the carbon skeleton of the acid by reaction of ammonia or amines with acids containing functional groups
• C07D 295/155 - Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with the ring nitrogen atoms and the carbon atoms with three bonds to hetero atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings
• C07C 229/56 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in ortho- position
• C07C 229/58 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in ortho- position having the nitrogen atom of at least one of the amino groups further bound to a carbon atom of a six-membered aromatic ring, e.g. N-phenyl-anthranilic acids
• C07C 229/64 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring the carbon skeleton being further substituted by singly-bound oxygen atoms
• C07C 229/68 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings being part of the same condensed ring system

Abstract

The invention relates to a method for manufacturing a composition including telechelic oligomers the ends of which carry reactive functions, said method including the contacting of at least one waste material containing rubber, preferable tire waste, with a chemical degradation agent selected from cleavage agents that are specific for double bonds; and a transfer agent in the presence of a catalysts; at a temperature from 15 to 400 °C, preferably from 17 to 35 °C; at ambient pressure; the invention also relates to the composition of oligomers that can be prepared by the method according to the invention.

IPC Classes  ?

• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
• C08J 11/18 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C08J 11/22 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
• C08L 17/00 - Compositions of reclaimed rubber
• C08L 21/00 - Compositions of unspecified rubbers
• C08F 4/80 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from metals not provided for in group selected from iron group metals or platinum group metals

Abstract

The aim of the invention is to provide a method for preparing carboxylic acid derivatives by aromatic nucleophilic substitution, in which a carboxylic acid derivative having a single carboxyl functional group, or one of the salts thereof, said carboxylic acid derivative having, in the ortho position of the carboxyl functional group, a leaving group, which is preferably an atom of fluorine or of chlorine or an alkoxy group, chiral or not, preferably a methoxy group, said carboxylic acid derivative not being substituted by an electroattractive group other than the leaving group if any; is reacted with a reactant MNu, where M is a metal and Nu is a nucleophile, chiral or not, said aromatic nucleophilic substitution reaction being carried out without a catalyst and without a step of protecting/deprotecting the acid functional group of the starting compound.

IPC Classes  ?

• C07C 51/353 - Preparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by isomerisationPreparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by change of size of the carbon skeleton
• C07C 227/08 - Formation of amino groups in compounds containing carboxyl groups by addition or substitution reactions, without increasing the number of carbon atoms in the carbon skeleton of the acid by reaction of ammonia or amines with acids containing functional groups
• C07D 295/155 - Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with the ring nitrogen atoms and the carbon atoms with three bonds to hetero atoms separated by carbocyclic rings or by carbon chains interrupted by carbocyclic rings
• C07C 229/56 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in ortho- position
• C07C 229/58 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in ortho- position having the nitrogen atom of at least one of the amino groups further bound to a carbon atom of a six-membered aromatic ring, e.g. N-phenyl-anthranilic acids
• C07C 229/64 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring the carbon skeleton being further substituted by singly-bound oxygen atoms
• C07C 229/68 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings being part of the same condensed ring system

Abstract

The invention relates to an electrodynamic-transducer magnetic motor device (10) having a moving coil comprising a magnetic circuit consisting of a tied angular magnet (11), characterized in that said tied annular magnet has a hollow annular structure, said hollow annular structure comprising an annular cavity (12) connected to an upper portion (13) of an external surface (14) of said hollow annular structure by a first annular channel (15) forming a first gap in which a first winding (17) of the moving coil can move.

IPC Classes  ?

• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details
• H04R 9/06 - Loudspeakers

Abstract

The present invention concerns an acoustic impedance sensor designed to measure the input acoustic impedance of a waveguide. This sensor is characterized in that the source is a piezoelectric pellet that makes it possible for the determination of the acoustic impedance of a passive acoustic element to remain coherent for low frequencies while preserving an inexpensive implementation of the sensor.

IPC Classes  ?

• G01H 15/00 - Measuring mechanical or acoustic impedance
• G01N 29/028 - Analysing fluids by measuring mechanical or acoustic impedance

Abstract

Said electrodynamic speaker structure having MEMS technology, comprising a stator-forming means (2), diaphragm-forming means (3), and resiliently shape-changing means (4) for connecting all of said means, is characterized in that the stator-forming means (2), diaphragm-forming means (3), and connecting means (4) are made of a single part by machining a silicon chip.

IPC Classes  ?

• H04R 7/18 - Mounting or tensioning of diaphragms or cones at the periphery
• H04R 9/06 - Loudspeakers
• H04R 31/00 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
• H04R 9/10 - Telephone receivers

Abstract

The present invention relates to the use of a lithium-based complex oxide having a layered perovskite structure of the Ruddlesden-Popper type, for reversibly storing carbon dioxide in the atmosphere and/or in ambient air, the carbon dioxide being stored at a maximum temperature of 200°C, in the presence of water vapour, and also to a method for storing carbon dioxide in the atmosphere and/or in ambient air using such a complex oxide.

IPC Classes  ?

• B01D 53/62 - Carbon oxides
• B01D 53/82 - Solid phase processes with stationary reactants
• B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium

Abstract

The invention relates to a moving part (1) for an electrodynamic transducer, including at least one mandrel (2) supporting a winding of at least one coiled wire (3), characterised in that the mandrel (2) includes at least one first element rigidly connected inside at least one second element (5) for guiding the moving part (1) inside said transducer, the first element (4) consisting of a winding support for the coiled wire (3) so that the coil is located inside the mandrel (2), as well as vibration-transmitting means such as a diaphragm, said vibration being generated by the movement of the coil induced by the flow of current in the coil wire (3). The invention also relates to an electrodynamic transducer including such a moving part (1).

IPC Classes  ?

• H04R 9/04 - Construction, mounting, or centering of coil

Abstract

The invention relates to a method for the non-destructive and contactless characterisation of a multilayered structure (1) having a substantially spherical shape and including at least two layers (2, 3, 4, 5, 6) separated by interfaces, said method including the following steps: using a laser (11) for locally heating the structure (1) in a thermoelastic state so that the structure (1) is vibrated in a non-destructive manner; measuring the resonance frequencies (Fexp) of the vibration modes of the structure (1); deriving at least one characteristic concerning the integrity or the shape or the mechanical behaviour of the structure (1) from the resonance frequencies (Fexp) of the structure (1).

IPC Classes  ?

• G01N 25/72 - Investigating presence of flaws
• G21C 17/06 - Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination

Abstract

The invention relates to photo-crosslinkable antifouling compositions, in particular antibacterial, antifungal and anti-algae ones, which include the combination of at least one telechelic oligoisoprene of a particular formula with an agent for crosslinking said oligoisoprene. The antifouling film is obtained by applying a thin layer of such a liquid composition on a substrate and is crosslinked at room temperature by exposure to visible and/or UV radiations. The film can be used for preventing the occurrence of a biofilm on any surface in a humid or aqueous environment, and can be used as an additive for preparing materials with a view to imparting bacteriostatic and/or bactericidal properties thereto.

IPC Classes  ?

• C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
• C09D 123/22 - Copolymers of isobuteneButyl rubber

Abstract

The invention relates to photo-crosslinkable antifouling compositions, in particular antibacterial, antifungal and anti-algae ones, which include the combination of at least one telechelic oligoisoprene of a particular formula with an agent for crosslinking said oligoisoprene. The antifouling film is obtained by applying a thin layer of such a liquid composition on a substrate and is crosslinked at room temperature by exposure to visible and/or UV radiations. The film can be used for preventing the occurrence of a biofilm on any surface in a humid or aqueous environment, and can be used as an additive for preparing materials with a view to imparting bacteriostatic and/or bactericidal properties thereto.

IPC Classes  ?

• C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
• C09D 123/22 - Copolymers of isobuteneButyl rubber

Abstract

The present invention relates to an acoustic impedance sensor designed to measure the input acoustic impedance of a waveguide. This sensor is characterized in that the source is a piezoelectric wafer which allows the determination of the acoustic impedance of a passive acoustic element to remain coherent for low frequencies while keeping the implementation of the sensor inexpensive.

IPC Classes  ?

• G01H 15/00 - Measuring mechanical or acoustic impedance

Abstract

The invention relates to a voice coil support (21) for a coil transducer motor structure (10) having a first surface (26) towards one end and a second surface (22) towards the other end along an axis of displacement Z, the voice coil support being adapted to receive at least one coil (22H, 22L) wound therearound an outer surface (27) arranged in use for displacing the voice coil support (21) along its axis of displacement Z, as a current is driven through the coils (22H, 22L) when the voice coil support (21) is placed in a magnetic field, characterized in that the voice coil support (21) comprises a material adapted to prevent airflow communication between at least the first surface (26) and the second surface (22).

IPC Classes  ?

• H04R 9/04 - Construction, mounting, or centering of coil

Abstract

The invention relates to a coil transducer motor structure (20) comprising at least one coil (22), at least one magnetic element (23) arranged in use to provide a path for magnetic flux between the ends of said coil (22), characterized in that the magnetic element (23) has a structure providing a curvilinear path therethrough for said magnetic flux.

IPC Classes  ?

• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details

Abstract

The invention relates to a magnetic structure (5, 5', 5",10) generating a magnetic field for the iron-free motor of an electrodynamic loudspeaker (1) having a mobile coil (2), the magnetic structure generating a magnetic field in an air gap in which the coil is provided, said magnetic structure being formed of a stack of three magnets corresponding to an intermediate magnet (8, 8', 8") and two upper and lower covering magnets (7, 9) (7', 9') (7",9") (11,12), said magnets defining a straight air gap edge and being contiguous, the intermediate magnet having a radial magnetic bias and the covering magnets having the same magnetic bias and remanent magnetisations. According to the invention, the covering magnets have a radial (7,9) (7',9') (7",9") or axial (11,12) magnetic bias and when the magnetic bias of the covering magnets is radial, the remanent magnetisation of each covering magnet is higher than the remanent magnetisation of the intermediate magnet, while when the magnetic bias of the covering magnets is axial, the remanent magnetisation of each covering magnet is lower than the remanent magnetisation of the intermediate magnet. The invention also relates to motors.

IPC Classes  ?

• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details

Abstract

The invention relates to a measure bench for characterising the mechanical behaviour of materials, characterised in that it comprises an electro-acoustic transducer (HP1, HP2) in contact with one of the faces of a sample (PS) of the material, and an immobile portion in contact with the face of said sample that is opposite the face in contact with said transducer, said transducer being, on the one hand, adapted for applying a compression force on the sample (PS) and, on the other hand, for taking a measure for characterising the mechanical behaviour of said sample.

IPC Classes  ?

• G01N 3/32 - Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces

Abstract

The invention concerns a compound comprising a combination of two crystal phases. The first crystal phase corresponds to the formula: AaEbVcModPeOfHg wherein A is an alkali-metal; E is Te, Sb or Bi; and 0 ≤ a ≤ 3, 0 < b ≤ 3, 0 ≤ c ≤ 3, 0 < d ≤ 13, 0 < e ≤ 2, 0 ≤ g ≤ 3. The second crystal phase corresponds to the formula ZgMohXiOj wherein: Z is selected among trivalent rare earths; X is selected among the elements V, Ga, Fe, Bi, Ce, Ti, Sb, Mn, Zn, Te; and 0 < g ≤ 3, 0 ≤ h ≤ 3, 0 ≤ i ≤ 1. The indices f and j represent the number of oxygen atoms required for satisfying the relative valency and atomic proportions of the elements present. The invention also concerns the method for preparing said compound, and its use in particular as catalyst for oxidizing alkanes.

IPC Classes  ?

• B01J 27/199 - Vanadium with chromium, molybdenum, tungsten or polonium
• B01J 37/04 - Mixing
• C07C 51/25 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
• C07C 51/215 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of saturated hydrocarbyl groups
• C07C 45/35 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
• C07C 45/33 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
• B01J 35/02 - Solids

Abstract

The present invention relates to a calorimeter for studying a chemical reaction continuously, comprising: at least one reaction chamber through which move reactants and one or more reaction products, resulting from the reaction between these reactants; and a thermopile comprising a plurality of alternating measurement thermojunctions and reference thermojunctions. According to the invention, said or each reaction chamber and said thermopile are in contact with each other so as to make it possible, on the one hand, for the measurement thermojunctions to be in thermal contact with the reaction product(s) and, on the other hand, for the reference thermojunctions to be in thermal contact with one or both of the reactants taken individually.

IPC Classes  ?

• G01K 17/00 - Measuring quantity of heat
• G01N 25/48 - Investigating or analysing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation

Abstract

The invention relates to an electrodynamic transducer (1) having a dome membrane (2) comprising an electrodynamic motor with a coil (6) which is supported by a mandrel (3) that is solidly connected to the membrane which is suspended from a frame (7). The aforementioned coil is disposed in a gap in which it can move and which is defined at the centre by an inner magnetic structure (4) and at the periphery by an outer magnetic structure (5). According to the invention, the suspension does not contain a peripheral suspension nor an inner suspension. The inventive transducer comprises at least two means (11) for confining the magnetic field in the gap in order to form at least two tiered ferrofluidic seals (12, 13, 14) in the gap using a ferromagnetic liquid, such as at least to guide the coil and to form a pneumatic seal between the front and rear faces of the membrane, at least one of said ferrofluidic seals being continuous. The invention is suitable for loudspeakers.

IPC Classes  ?

• H04R 9/06 - Loudspeakers

Abstract

The invention relates to an electrodynamic transducer including a frame and containing at least one electric coil (2) which is placed in a static magnetic field and which can move about a rest position in a vertical free space. The aforementioned coil(s) is wound around and fixed to a mandrel (12) and a return means is used to return the coil-bearing mandrel to the rest position in the absence of an external bias, said straight cylinder defining an inner volume and an outer volume. According to the invention, the magnetic field is produced by outer and inner magnetic structures which each comprise at least one fixed permanent magnet in the form of a ring. The motor does not contain any ferromagnetic or magnetic part between the outer volume and the inner volume. Moreover, at least the part of the frame that is used to fix the magnets is made form a non-ferromagnetic and non-magnetic material. The ratio R of the inductance value Lp of the coil when at rest and blocked in the transducer to the inductance value Ll of the same coil when free and isolated in the space is between 0.9 and 1.1 in the useful frequency band of the transducer. Numerous implementation variants are disclosed in the invention.

IPC Classes  ?

• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details

Abstract

The invention concerns supports or receptacles for solubilized or suspended biological entities whereof the walls are made of plastics surface-treated by an electromagnetic plasma followed by a polymer deposition. It can be in the form of tubes or multiple-well plates. It provides among other things the possibility of storing, transferring and performing reactions in the context of microassays of biological entities, more particularly the prion protein, with enhanced sensitivity.

IPC Classes  ?

• B29C 59/14 - Surface shaping, e.g. embossingApparatus therefor by plasma treatment