Abstract: Process for the manufacture of nanocomposites comprising at least one lamellar clay and at least one polymer, according to which the clay, the polymer and a bifunctional solvent simultaneously comprising an organophilic group capable of dissolving the polymer and a hydrophilic group capable of reacting with the clay are brought into contact.

Abstract: Compositions comprising one or more polymers chosen from chlorinated polymers, and one or more salts of bismuth and of a carboxylic acid chosen from saturated hydroxy- and aminomonocarboxylic acids which have a total number of hydroxyl and amine groups with respect to the number of carbon atoms of greater than {fraction (1/10)} and from saturated nonhydroxylated and nonaminated polycarboxylic acids. Articles or parts of articles manufactured using these compositions.

Abstract: The compositions contain, as heat stabilizer, an effective amount of bismuth carboxylate chosen from bismuth succinate, acrylate and terephthalate and their mixtures. In general, this amount is at least 0.05 part and does not exceed 5 parts per 100 parts by weight of vinylidene fluoride polymer. The heat stabilizers according to the invention are suitable both for the thermal stabilization of virgin polymers and for the stabilization/decoloration of thermally degraded waste polymers.

Abstract: Process for the treatment of ground polyolefin material originating from scrap dairy product containers with at least one agent chosen from hydrogen peroxide, steam and sodium hydroxide in a quantity which is effective for deodorizing the polyolefin. Ground material obtained by this process and exhibiting an imperceptible level of residual odour of aged milk. Use of the deodorized ground material obtained by this process for the production of shaped objects.

Abstract: The compositions contain, as heat stabilizer, an effective amount of bismuth carboxylate chosen from bismuth succinate, acrylate and terephthalate and their mixtures. In general, this amount is at least 0.05 part and does not exceed 5 parts per 100 parts by weight of vinylidene fluoride polymer. The heat stabilizers according to the invention are suitable both for the thermal stabilization of virgin polymers and for the stabilization/decoloration of thermally degraded waste polymers.

Abstract: The present invention relates to a material for semiconductive screening and to use of the material in manufacturing cables and capacitors, and in electromagnetic shielding of electrical and electronic apparatus. The present invention further relates to cables and electrical and electronic apparatus containing the material. The semiconductive screening is formed of a polymer matrix containing one or more polymers and in which matrix 5% to 70% (by weight) of at least one conjugated non-doped or dedoped polymer is to be found in the dispersed state. In the absence of an electric field, the conductivity of the screening is very low, but said conductivity is an increasing function of the applied field (see curves 2 to 9 in the figure).

Abstract: The invention relates to thiophenes substituted by an alkoxy group containing at least one fluorine atom.The invention also relates to the polymers derived from these substituted thiophenes and to the electrically conductive polymers containing these polymers.The invention also relates to processes for obtaining these thiophenes, these polymers and these electrically conductive polymers.The invention also relates to the uses of these thiophenes, of these polymers and of these electrically conductive polymers as well as to the devices containing the polymers and the electrically conductive polymers.

Abstract: The invention relates to a process for the preparation of polymers based on polyindoles by chemical polymerization of indole in the presence of an oxidizing agent and of a solvent.The invention also relates to compositions and electroconductive devices containing the polyindoles thus obtained and to the use of the polymers obtained.

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.

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.

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.

Abstract: Substituted thiophenes of general formula: ##STR1## in which: R represents hydrogen atom or an aliphatic group containing from 1 to 4 carbon atoms,X and Z may be identical or different and represent a hydrogen atom or a fluorine atom,Y represents an at least partially fluorinated aliphatic or aromatic group,m represents an integer equal to or greater than 1, andn represents an integer such that 0.ltoreq.n.ltoreq.12.The invention also relates to the electrically conducting polymers containing recurring units derived from monomers chosen from the substituted thiophenes.

Abstract: The invention relates to an electricity conducting material having magnetic properties constituted by an electronic conductive polymer in which are homogeneously dispersed permanent magnetic particles bonded chemically or physicochemically to the polymer or serving as a polymer dopant.This material can be prepared by the polymerizationa) of a monomer such as pyrrole in the presence of a colloidal suspension of charged magnetic particles, orb) a monomer such as pyrrole, chemically bonded to a magnetic particle.

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.

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.

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.

Abstract: Process for preparing a latex of polypyrrole in an aqueous reagent medium containing a ferric salt, a hydrolysed polyvinyl acetate and a dodecyl sulphate.The films prepared with this conducting latex are homogeneous, adhere to metals and metallized glasses and have high conductivity.

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.

Abstract: Electrically conductive polymers containing repeat units derived from five-membered aromatic heterocyclic monomers substituted, in the 3 position relative to the heteroatom, by an ether-type substituent linked to the heterocyclic ring by an alkylene radical containing at least two carbon atoms. The invention also relates to certain monomers enabling the above-mentioned conductive polymers to be obtained.

Abstract: The invention relates to a composition comprising an electrically conductive polymer chosen from polypyrrole and/or substituted polypyrrole, a vanadium compound and an anion.The invention also relates to a process for obtaining this composition and to the uses of this composition.