Abstract:
The present invention relates to symmetrical tetraazo cationic compounds of formula (I), Dyel-L-Dyel in which formula Dyel represents (II); in which: W1, which are identical, represent: (IIa, IIb, IIc); W 2, which are identical, represent (III); W3, which are identical, represent (IV); 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 asdirect dye, and also a process using the said composition for dyeing keratin fibres.
Abstract:
본 발명은 하나 이상의 형광 시아닌 염료를 포함하는 조성물의, 라이트닝 효과와 함께 인간 케라틴 성분, 및 특히 모발과 같은 인간 케라틴 섬유를 염색하기 위한 용도에 관한 것이다. 본 발명은 인간 케라틴 성분이 염색되고 동시에 상기 성분에의 유해 없이 라이트닝되게 할 수 있다. 본 발명의 내용에서 적용되는 형광 염료는 또한 케라틴 성분에 대한 높은 착색 친화성 및 외부 제제, 특히 샴푸에 대한 양호한 내성을 가지고 있다.
Abstract:
The present invention relates to the use, for the dyeing with lightening effect of human keratin substances, and in particular of human keratin fibres such as the hair, of a composition comprising at least one fluorescent cyanine dye. The present invention allows human keratin substances to be both dyed and at the same time lightened without detriment to said substances. The fluorescent dyes employed in the context of the invention also have high tinctorial affinity for keratin substances and good properties of resistance towards external agents, and especially towards shampoos.
Abstract:
The present invention concerns a new dissymmetrical cationic polyazo compounds of formula (I) Dyel-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.