Abstract: A hydrogen storage assembly includes an enclosure substantially encompassing an electrolyzer, a hydrogen storage system, a hydrogen fuel cell, an electrochemical energy storage module, a power conversion system, and a control system. The electrolyzer is configured to separate, via electrolysis, water into hydrogen gas that is stored in the hydrogen storage system; the hydrogen fuel cell is configured to convert the stored hydrogen gas into electrical energy and water. The electrochemical energy storage module is configured to function as an energy buffer; the power conversion system is configured to convert the produced electrical energy to a desired form. The control system is configured to to control the storage and distribution of the stored hydrogen and electrical energy in an optimized manner to achieve predefined financial and energy-use objectives.

Abstract: The invention relates to the dyeing of human keratin fibres, especially the hair, using anionic direct dyes bearing a particular ammonium or phosphonium counterion of formula (Ia) and/or optical brighteners of formula (Ib) Col(?)m[X+]n (Ia) Azu(?)m[X+]n (Ib) in which formulae (Ia) and (Ib): Azu/Col(?)m, R1, R2, R3, R4, m and n are as defined in the description. The invention relates to a dye composition comprising an anionic compound of formula (Ia) and/or (Ib), and to a process for dyeing keratin fibres such as the hair, using the said composition. Similarly, the invention relates to novel anionic compounds of formula (Ia) or (Ib) and to the uses thereof for dyeing keratin fibres. This composition makes it possible to obtain chromatic, powerful and particularly fast coloration on keratin fibres and particularly lightening coloration via an optical effect on dark hair.

Abstract: The invention relates to the dyeing of human keratin fibres, especially the hair, using anionic direct dyes bearing a particular ammonium or phosphonium counterion of formula (Ia) and/or optical brighteners of formula (Ib) Col(?)m[X+]n (Ia) Azu(?)m[X+]n (Ib) in which formulae (Ia) and (Ib): Azu/Col(?)m, R1, R2, R3, R4, m and n are as defined in the description. The invention relates to a dye composition comprising an anionic compound of formula (Ia) and/or (Ib), and to a process for dyeing keratin fibres such as the hair, using the said composition. Similarly, the invention relates to novel anionic compounds of formula (Ia) or (Ib) and to the uses thereof for dyeing keratin fibres. This composition makes it possible to obtain chromatic, powerful and particularly fast coloration on keratin fibres and particularly lightening coloration via an optical effect on dark hair.

Abstract: The invention relates to the dyeing of human keratin fibres, especially the hair, using cationic direct dyes bearing a particular sulf(on)ate, carboxylate, or phosph(on)ate counterion of formula (I) in which formula (I) Col(?)m, X?, m and n are as defined in the description. The invention relates to a dye composition comprising a cationic dye of formula (I), and to a process for dyeing keratin fibres such as the hair, using the said composition. Similarly, the invention relates to novel cationic compounds of formula (I) and to the uses thereof for dyeing keratin fibres. This composition makes it possible to obtain chromatic, powerful and particularly fast coloration on keratin fibres and particularly lightening coloration via an optical effect on dark hair.

Abstract: One subject of the present invention is monocationic monochromophoric compounds of formula (I) and/or (II) below: in which: R1 represents a hydrogen or an alkyl, phenyl, benzyl, alkylcarbonyl, alkylsulphonyl, aminosulphonyl or aminocarbonyl radical; R5 represents an alkyl, phenyl or benzyl radical; R2 and R3, represent a halogen or an alkyl, aryloxy, arylamino, hydroxyl, alkoxy, (poly)hydroxyalkoxy, alkoxycarbonyl, alkylcarbonyloxy, amino, alkylcarbonylamino, aminocarbonyl, ureido, aminosulphonyl, alkylthio, alkylsulphonylamino, cyano, trifluoromethyl, thio, alkylsulphinyl or alkylsulphonyl radical; R4 represents a hydrogen or an alkyl, amino, alkylcarbonylamino, ureido, alkylsulphonylamino, hydroxycarbonyl, alkoxycarbonyl, cyano, phenyl or benzyl radical; R6 and R7, represent a hydrogen or an alkyl, alkylcarbonyl, alkoxycarbonyl, alkoxyaryl, aminoaryl, aminocarbonyl or alkylsulphonyl radical; and n is between 0 and 4, n? is between 0 and 4, the electroneutrality of the compounds of formulae (I) and (II)

Abstract: The present disclosure relates to dissymmetrical cationic diazo compounds having at least one 2-imidazolium unit and a cationic or non-cationic linker. The disclosure further relates to dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers, and also to a method of coloring keratin fibers that employs this composition, and to a device having a plurality of compartments.

Abstract: The present disclosure relates to polycationic monochromophoric hydrazone compounds of following formula (I): wherein W1 is a heteroaromatic radical comprising 5 or 6 ring members, optionally condensed with an aromatic ring comprising 6 ring members, comprising a quaternized nitrogen atom and optionally another heteroatom which may or may not be identical to nitrogen; X, which may or may not be identical, is a nitrogen atom or a CR2 group; Z is a cationic group comprising at least one quaternized nitrogen atom. The present disclosure also relates to a composition for dyeing human keratin fibers comprising the polycationic compounds disclosed herein, and to a dyeing process using the composition of the present disclosure, and even further to multicompartment device.

Abstract: The present invention concerns a new dissymmetrical cationic polyazo compounds of formula (I) Dye1-L-Dye2. The present invention also relates to dye compositions comprising such compounds as direct dye in a medium that is suitable for dyeing keratin fibres, and also to a process for dyeing keratin fibres using this composition and a multi-compartment device. The present invention provides direct dyes with which strong and varied shades that are resistant to external attacking factors such as bad weather and shampooing, for which there is no observation of any problem of change in colour over time.

Abstract: The invention concerns symmetric diazo cationic compounds of formula (I), their resonance forms, as well as their acid-addition salts and their solvates, wherein W1, identical represent a hydrogen atom, a halogen atom, a —NR5R6, OR7, —NR1-Ph-NR5R6, —NR4-Ph-OR7, —O-Ph-OR7, —O-Ph-NR5R6 group; L represents a cationic of non-cationic linker arm. The invention also concerns dyeing compositions comprising in a suitable medium for dyeing keratinous fibers, such compounds as direct dyeing agent, as well as a method for dyeing keratinous fibers using said composition and a multiple-compartment device.

Abstract: The invention concerns the use as direct dyeing agent of at least one tetra-azapentamethine compound, a dyeing composition comprising at least such a compound, as well as a method for dyeing keratinous fibers, in particular human keratinous fibers and more particularly hair, which consists in applying at least one composition comprising such a compound. The composition also concerns tetra-azapentamethine compounds of formula (I). The invention further concerns a method for bleaching such compounds, as well as bleaching keratinous fibers previously dyed therewith.

Abstract: The present invention relates to symmetrical tetraazo cationic compounds of formula (I) Dye1-L-Dye1 in which formula: Dye1 represents: in which: W1, which are identical, represent: W2, which are identical, represent: W3, which are identical, represent: L represents an optionally substituted C1-C60 hydrocarbon-based chain, optionally bearing at least one cationic charge, optionally interrupted with and/or terminated at one and the other of the ends with at least one hetero atom or group comprising at least one hetero atom; the electrical neutrality of the compounds being ensured by means of one or more cosmetically acceptable, identical or different anions An. A subject of the invention is similarly a composition comprising such a dye as direct dye, and also a process using the said composition for dyeing keratin fibres.

Abstract: The invention concerns the use as direct dyeing agent of at least one tetra-azapentamethine compound, a dyeing composition comprising at least such a compound, as well as a method for dyeing keratinous fibers, in particular human keratinous fibers and more particularly hair, which consists in applying at least one composition comprising such a compound. The composition also concerns tetra-azapentamethine compounds of formula (I). The invention further concerns a method for bleaching such compounds, as well as bleaching keratinous fibers previously dyed therewith.

Abstract: The invention concerns the use as direct dyeing agent of at least one tetra-azapentamethine compound, a dyeing composition comprising at least such a compound, as well as a method for dyeing keratinous fibers, in particular human keratinous fibers and more particularly hair, which consists in applying at least one composition comprising such a compound. The composition also concerns tetra-azapentamethine compounds of formula (I). The invention further concerns a method for bleaching such compounds, as well as bleaching keratinous fibers previously dyed therewith.

Abstract: The present disclosure relates to dissymmetrical cationic diazo compounds having at least one 2-imidazolium unit and a cationic or non-cationic linker. The disclosure further relates to dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers, and also to a method of coloring keratin fibers that employs this composition, and to a device having a plurality of compartments.

Abstract: Disclosed herein are symmetrical cationic diazo compounds chosen from compounds of formula (I), their resonance forms, their acid addition salts, and their solvates: Also disclosed herein are dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers, a method of coloring keratin fibers comprising contacting the keratin fibers with such compositions, and a device comprising a plurality of compartments.

Abstract: The present disclosure relates to dissymmetrical cationic diazo compounds having at least one 4-pyridinium unit and a cationic or non-cationic linker. The disclosure further relates to dyeing compositions comprising these compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers. Further, the disclosure relates to a method of coloring keratin fibers that employs this composition, and a device having a plurality of compartments.

Abstract: The present invention relates to symmetrical cationic diazo compounds of formula (I) below, their resonance forms, and also their acid addition salts and their solvates: in which W1 radicals, which are identical, represent a halogen atom or an —NR4—Ph—NR5R6, —NR4—Ph—OR7, —O—Ph—OR7 or —O—Ph—NR5R6 group; L, a cationic linker connecting the two identical azo chromophores represents a C2-C40 alkyl radical which carries at least one cationic charge and is optionally substituted and/or optionally interrupted by one or more, saturated or unsaturated (hetero)cycles; the linker L containing no azo, nitro, nitroso or peroxo bond. The invention further relates to dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibres, and also to a method of colouring keratin fibres that employs this composition, and a device having a plurality of compartments.

Abstract: The present disclosure relates to symmetrical cationic diazo compounds of formula (I), the resonance forms, and also the acid addition salts and/or the solvates thereof: The present disclosure further relates to dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers, and also to a method of coloring keratin fibers that employs this composition, and a multi-compartment kit containing such compositions.

Abstract: The present disclosure relates to symmetrical cationic diazo compounds of formula (I) below, their resonance forms, and also their acid addition salts and their solvates: wherein W1 radicals, which are identical, are chosen from a halogen atom, or an —NR4-Ph-NR5R6, —NR4-Ph-OR7, —O-Ph-OR7 or —O-Ph-NR5R6 group or else an —NR5R6 or —OR7 group with certain provisos; L, a non-cationic linker connecting the two identical azo chromophores, is chosen from a covalent bond; an optionally substituted C1-C40 alkyl radical optionally interrupted by a (hetero)cycle, the alkyl radical being optionally interrupted by at least one heteroatom or group comprising at least one heteroatom or an optionally substituted phenyl radical. The disclosure further relates to dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers, and also to a method of coloring keratin fibers that employs this composition, and a device comprising a plurality of compartments.

Abstract: Disclosed herein are dissymmetrical cationic diazo compounds comprising a 2-pyridinium group and a cationic or non-cationic linker. Also disclosed herein are dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers, a method for coloring keratin fibers comprising contacting the keratin fibers with such dyeing compositions, and a device comprising a plurality of compartments.