Abstract: A method for producing an aqueous foam comprising (a) preparing a solution comprising at least one surfactant and at least one protic polar solvent, (b) bringing the solution into contact with a pressurised gas to obtain a two-phase mixture, and (c) injecting the two-phase mixture to obtain the aqueous foam after expansion or dispersion of the gas. The solution further comprises at least one gelling compound chosen from a non-nitrogenous polysaccharide and gelatin. An aqueous foam obtained by such method and uses of the same, in particular in the fields of decontamination, the purification of effluents, or the defusing or containment of explosive devices or suspected explosive devices.

Abstract: The invention relates to a method for producing an aqueous foam comprising the following steps: (a) preparing a solution comprising at least one surfactant and at least one protic polar solvent, (b) bringing the solution into contact with a pressurised gas, whereby a two-phase mixture is obtained, and (c) injecting the two-phase mixture, whereby, after expansion or dispersion of the gas, the aqueous foam is obtained. According to the invention, the solution further comprises at least one gelling compound chosen from a non-nitrogenous polysaccharide and gelatin. The invention also relates to the aqueous foam obtained by such a method and to the uses of same, in particular in the fields of decontamination, the purification of effluents, or the defusing or containment of explosive devices or suspected explosive devices.

Abstract: A method for preparing a polymeric material doped with at least one first metal element and at least one second metal element, including: a) copolymerization of a first monomer containing a first metal element and of a second monomer containing a chelating group of a second metal element, to obtain a polymeric material containing (i) recurrent units deriving from the polymerization of the first monomer, the recurrent units containing the first metal element and (ii) recurrent units deriving from the polymerization of the second monomer, the recurrent units containing chelating groups of a second metal element, and when the first metal element is different from the second metal element, b) contacting the material from a) with a solution containing the second metal element, in return for which the second metal element is complexed with the chelating groups, where b) is optional when the first and second metal element are identical.

Abstract: The invention relates to a method for the specific production of a polymer material doped by a first metal element, which is gold, and at least one second metal element, the first metal element and the at least one second metal element being identical or different from each other.

Abstract: The invention relates to a method for the specific production of a polymer material doped by a first metal element, which is gold, and at least one second metal element, said first metal element and said at least one second metal element being identical or different from each other.

Abstract: The invention relates to a method for preparing a polymeric material doped with at least one first metal element and at least one second metal element, said at least one first metal element and said at least one second metal element being identical or different from each other, said method comprising: a) a step for copolymerization of at least one first monomer comprising at least one first metal element and of at least one second monomer comprising at least one chelating group of at least one second metal element, in return for which a polymeric material is obtained comprising recurrent units from the polymerization of said first monomer, said recurrent units comprise said at least one first metal element and comprising recurrent units from the polymerization of said second monomer, said recurrent units comprising chelating groups of at least one second metal element; and when said first metal element is different from said second metal element, said method further comprising a step b) for putting the mat

Abstract: Coordination complexes of at least one metal element with at least one aromatic monomer are provided. The at least one aromatic monomer may comprise at least one aromatic ring, which ring comprising at least one ethylenic group, at least one hydroxide group —OH, at least one oxime group and salts thereof. The metal element may be in the form of a metal alkoxide.

Abstract: A method for producing polymeric balls or polymeric beads doped with at least one metal element is provided. The method may comprise the following steps: a) a step for forming polymeric balls or beads by polymerization, in an organic phase comprising a polymerization initiator, of at least one ethylenic monomer comprising at least one chelating ligand of at least one metal element; and b) a step for putting said polymeric balls or beads in contact with a solution comprising at least one metal element.

Abstract: The invention relates to a process for preparing a polymeric material doped with metal elements, comprising a step of polymerization of at least one monomer comprising at least one ethylenic function, said monomer being complexed with a metal element. Use of the materials obtained by means of this process as catalysts, or luminescent or magnetic materials, or as elements for laser targets.

Abstract: A method for producing polymeric balls or polymeric beads doped with at least one metal element is provided. The method may comprise the following steps: a) a step for forming polymeric balls or beads by polymerization, in an organic phase comprising a polymerization initiator, of at least one ethylenic monomer comprising at least one chelating ligand of at least one metal element; and b) a step for putting said polymeric balls or beads in contact with a solution comprising at least one metal element.

Abstract: Coordination complexes of at least one metal element with at least one aromatic monomer are provided. The at least one aromatic monomer may comprise at least one aromatic ring, which ring comprising at least one ethylenic group, at least one hydroxide group —OH, at least one oxime group and salts thereof. The metal element may be in the form of a metal alkoxide.

Abstract: The present invention relates to polymers comprising phenylene units, at least one of which bears a phenylene side group substituted with a perfluoro group or chain, which itself bears an —SO3H, —PO3H2 or —CO2H group. Use of this polymer to make fuel cell membranes.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z-??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4—, —CO—C6D4— and —C6D4—. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z-??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4-, —CO—C6D4- and —C6D4-. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z-??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4-, —CO—C6D4- and —C6D4-. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z-??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4-, —CO—C6D4- and —C6D4-. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): —A1—Z— ??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4—, —CO—C6D4— and —C6D4—. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The invention relates to a process for the preparation of poly(?-methylstyrene) by anionic polymerization of the ?-methylstyrene monomer, said process successively comprising the following stages: a) a stage of preparation of a solution comprising the ?-methylstyrene monomer and a nonpolar aprotic solvent; b) a stage of neutralization of the solution prepared in a) comprising the addition, to this solution, of an effective amount of at least one monofunctional organometallic initiator, so as to neutralize the proton sources of the solution prepared in a); c) a stage of cooling the solution obtained in b) to a temperature of less than 0° C.

Abstract: The invention relates to a process for the preparation of poly(?-methylstyrene) by anionic polymerization of the ?-methylstyrene monomer, said process successively comprising the following stages: a) a stage of preparation of a solution comprising the ?-methylstyrene monomer and a nonpolar aprotic solvent; b) a stage of neutralization of the solution prepared in a) comprising the addition, to this solution, of an effective amount of at least one monofunctional organometallic initiator, so as to neutralize the proton sources of the solution prepared in a); c) a stage of cooling the solution obtained in b) to a temperature of less than 0° C.

Abstract: The invention relates to polymers comprising phenylene units at least one of which bears laterally a phenylene group which is substituted by a group or a perfluorinated chain which itself bears a —SO3H, —PO3H2 or —CO2H group. The invention also relates to the use of said polymer in forming fuel cell membranes.