摘要:
Process for dyeing keratinous fibres, comprising the step of applying to these fibres at least one composition A containing, in a medium appropriate for dyeing, at least one mono- or di-hydroxyindole the application of the composition A being preceded or followed by the application of a composition B containing, in a medium appropriate for dyeing, at least one quinone derivative chosen from ortho- or para-benzoquinones, monoimines or diimines of ortho- or para-benzoquinones, 1,2- or 1,4-naphthoquinones, sulphonimides of ortho- or para-benzoquinones, .alpha., .omega.-alkylene-bis-1,4-benzoquinones, or 1,2- or 1,4-naphthoquinone-monoimines or -diimines; the mono- or di-hydroxyindoles and the quinone derivatives being chosen such that the oxidation-reduction potential difference .DELTA.E between the oxidation-reduction potential E.sub.i of the mono- or di-hydroxyindoles, determined at pH 7 in a phosphate medium on a vitreous carbon electrode by voltametry, and the oxidation-reduction potential E.sub.q of the quinone derivative determined at pH 7 in a phosphate medium by polarography on a mercury electrode and relative to a saturated calomel electrode is such that.DELTA.E=E.sub.i -E.sub.q .ltoreq.320 mV.
摘要:
The present invention relates to a novel method and device for electromagnetic stimulation of the skin for the purpose of modifying a physiological condition or performing treatment of a given pathology, and also to an electronic device enabling said method to be implemented. The device is characterized in that it comprises electronic elements imparting oscillatory behavior thereto at at least one resonant frequency, said resonance being induced by electromagnetic induction external to the device. A particular embodiment of the device is a passive electronic circuit that does not include any source of energy, characterized in that it comprises in series a self-inductor (1), a capacitor (2), and a resistor (3).
摘要:
Sealing ring comprising a support element (1) and a sealing collar (2) and which in sealing manner envelops a machine element (3) to be sealed, wherein the support element (1) and the sealing collar (2) are connected to each other, the support element comprising an axial flange (4), the axial flange (4) being of essentially cylindrical shape and extending in axial direction parallel to the insertion and removal direction (6) of the sealing ring and on the outer circumferential side presenting at least one elevation (7) with at least one support surface (8) extending essentially across the insertion and removal surface (6) and wherein the elevation (7) is enveloped by a cover (10) configured as a static seal (9).
摘要:
Method for dyeing keratinous fibres, characterized in that at least one composition (A) containing at least one aminoindole in a medium appropriate for dyeing is applied to these fibres, the application of the composition (A) being preceded or followed by the application of a composition (B) containing, in a medium appropriate for dyeing, at least one quinone derivative chosen from ortho- or para-benzoquinones, ortho- or para-benzoquinone monoimines or diimines, 1,2- or 1,4-naphthoquinones, ortho- or para-benzoquinone sulphonimides, .alpha.,.omega.-alkylene-bis-1,4-benzoquinones, or 1,2- or 1,4-naphthoquinone monoimines or diimines, the aminoindoles and the quinone derivatives being chosen such that the difference in redox potential .DELTA.E between the redox potential E.sub.i of the aminoindoles, determined at pH 7 in a phosphate medium on a vitreous carbon electrode by voltametry, and the redox potential E.sub.q of the quinone derivative, determined at pH 7 in a phosphate medium by polarography on a mercury electrode relative to the saturated calomel electrode, in such that.DELTA.E=E.sub.i -E.sub.q .ltoreq.470 mV.