摘要:
The invention concerns an organic composition comprising glycerol polycarbonates, mixed with polyglycerols, [ (a-hydroxymethyl) oxyethylene/ (a-hydroxymethyl ethylene carbonate) copolymers; optionally [(a-alkyl) oxyethylene/ (a-alkyl) ethylene carbonate] copolymers, optionally [(a-alkyl) oxyethylene/ (a-hydroxyalkyl) oxyethylene] copolymers, glycerol carbonate and/or other organic carbonates, glycerol and/or other co-produced and/or residual compounds and a method for producing said composition. The inventive composition or the homopolymers and copolymers constituting same, are applicable in the technical fields of hydraulic fluids, lubrication, wood treatment and decoration, fire-retardant treatment, detergency, oil prospecting and production, water treatment, cosmetics, pharmaceutics, food industry and chemical intermediates.
摘要:
The invention relates to a novel strain Saccharothrix actinomycete SA 103 deposited at CNCM on 16th February 2004, number I-3160 or a mutant strain thereof; a method and a medium for selection of said strain; and a method for the production of a broth, active concentrate and active compounds from a culture of said strain SA 103. The invention also relates to active compounds which can be obtained by the production method, i.e. novel mutatimycins and aldgamycins, pharmaceutical compositions comprising said active compounds and the use thereof in medicine and phytopharmaceuticals.
摘要:
New phosphorous-containing macrocycles and process for their production, said process consisting in creating a bridge of imine linkages between at least two molecules of a dicarbonyl compound and at least two molecules of phosphohydrazide. Each macrocycle consists of at least one closed chain composed of an even number, equal to or more than four, of synthons, each synthon corresponding to a molecule which, in the chain, follows a synthon corresponding to the other molecule. Said process enables in particular the production of macrocycles having following the molecular structure (I).
摘要:
L'invention concerne de nouveaux macrocycles organiques phosphorés et leur procédé de fabrication. Ces macrocycles sont fabriqués en réalisant un pontage par des liaisons imine, entre au moins deux molécules de composé dicarbonylé et au moins deux molécules de phosphohydrazide. Chaque macrocycle comprend au moins une chaîne fermée composée d'un nombre pair supérieur ou égal à 4 de synthons, chaque synthon correspondant à une molécule succédant dans la chaîne à un synthon correspondant à l'autre molécule. Le procédé permet en particulier de fabriquer les macrocycles de structure moléculaire (I).
摘要:
The invention relates to a method for depositing a hard metallic chrome coating or a hard coating of another metal having chemical properties which are similar to those of chrome, by chemical vapour deposition on a metallic substrate, said method essentially comprising the following steps: a) a solution is prepared, containing, in a solvent which is depleted of oxygen atoms, i) a molecular compound of the bis(arene) family which is a precursor of the metal to be deposited and has a decomposition temperature of between 300°C and 550°C, and ii) a chlorinated additive; b) said solution is introduced in the form of an aerosol into a heated evaporator at a temperature between the boiling temperature of the solvent and the decomposition temperature of the precursor; and c) the vapourised aerosol is driven by a neutral gas flow from the evaporator towards a CVD reactor comprising a susceptor carrying the substrate to be covered and heated to a temperature higher than the decomposition temperature of the precursor but to a maximum temperature of 550°C, the evaporator and the CVD reactor being subjected to the atmospheric pressure. This DLI-CVD method carried out at a low temperature and atmospheric pressure enables continuous treatment in industrial conditions of the large-size steel or alloy metallic plates, in order to obtain hard, monolayer or nanostructured multilayer metallic coatings. The invention also relates to an injectable solution especially suitable for implementing said method.
摘要:
The present invention relates to a method of treating aqueous effluents that employs an organic-solventless liquid/liquid extraction which allows the organic and metallic pollutants to be extracted by virtue of their solubilization in mixed micelles. These mixed micelles, which are formed of ionic surfactants, are capable of simultaneous extraction of the organic and metallic pollutants. The method according to the invention is simple, quick to implement and economic in terms of energy. The reduction in polluted volumes without production of new pollution is also a very advantageous result. The method makes it possible, moreover, to regenerate the surfactants for subsequent use, and also to recover the compounds extracted, which can be stored directly as ultimate waste or utilized for other purposes. The method may also be carried out as a continuous procedure, on the same site at which the effluents are produced.
摘要:
The invention concerns a hydrogen storage medium comprising a substance for storing hydrogen, characterized in that said substance consists of nanostructured silicon. The invention also concerns a method for making and a method for using said hydrogen storage medium.
摘要:
The invention concerns a motor (1) comprising a stator (4) and a rotor (6), the stator including piezoelectric actuators (11, 12, 21) for maneuvering staples (30A, 30Z) maintaining the stator and its linear displacement (L) along a guide (2), said actuators serving to drive the rotor in rotation (R).