Abstract:
The invention relates to a dyeing composition for keratinous fibers and in particular for human keratinous fibers such as hair, comprising, in a suitable medium for dyeing, at least one oxidation dye precursor chosen from 3-methyl-para-aminophenol, 2-methyl-para-aminophenol and 2-hydroxymethyl-para-aminophenol, and their addition salts with an acid; at least one coupling agent chosen from the 2-methyl-5-aminophenols of formula (I): ##STR1## in which R denotes hydrogen, methyl or ethyl or a .beta.-hydroxyethyl or .gamma.-hydroxypropyl group, and their addition salts with an acid; and as oxidation dye precursor, a para-aminophenol which is 2-substituted by a substituent which is different from methyl or hydroxymethyl, or one of its addition salts with an acid.
Abstract:
A composition for dyeing keratin fibres, and in particular human keratin fibres such as the hair, characterized in that it comprises, in a medium which is suitable for dyeing:at least one coupler selected from 2-iminoindoline derivatives of formula (I) and acid addition salts thereof: ##STR1## in which: R.sub.1 represents hydrogen, alkyl, hydroxyalkyl, alkoxycarbonyl or acyl;R.sub.2 represents hydrogen, alkyl, phenyl or arylsulphonyl;R.sub.3 represents hydrogen or alkyl which may be substituted with one or more hydroxyl, alkoxy, amino, alkylamino, dialkylamino, cyano or aryl groups;R.sub.4 and R.sub.5, which may be identical or different, denote hydrogen, hydroxyl, alkyl, alkoxy, amino, alkylamino, dialkylamino, aralkyl, halogen or a nitro group; andat least one oxidation base.
Abstract translation:用于染色角蛋白纤维,特别是人角蛋白纤维如毛发的组合物,其特征在于,它在适于染色的介质中包含:至少一种选自式(I)的2-亚氨基二氢吲哚衍生物和酸 其加成盐:其中:R1表示氢,烷基,羟基烷基,烷氧基羰基或酰基; R 2表示氢,烷基,苯基或芳基磺酰基; R 3表示氢或可被一个或多个羟基,烷氧基,氨基,烷基氨基,二烷基氨基,氰基或芳基取代的烷基; R 4和R 5可以相同或不同,表示氢,羟基,烷基,烷氧基,氨基,烷基氨基,二烷基氨基,芳烷基,卤素或硝基; 和至少一个氧化基。
Abstract:
Novel nitrobenzene compounds of the nitroparaphenylenediamine type substituted by sulphur in the 5-position are disclosed. These compounds are intended especially for the dyeing of keratin fibres and in particular human hair. A process for their preparation, dyeing compositions in which these compounds are present and a dyeing process in which these compositions are used are also disclosed.
Abstract:
The present invention relates to a novel process for the preparation of a monohydroxyindole or dihydroxyindole compound by a single step of placing in contact, in a solvent medium, at least one hydrolase with at least one indole compound bearing one or two radicals connected by an ester function to the benzene ring.
Abstract:
Topically applicable sunscreen/cosmetic compositions well suited for enhanced photoprotection of human skin and/or hair against the damaging effects of UV-A and UV-B irradiation, particularly solar radiation, comprise a photoprotecting effective amount of a novel benzotriazole-substituted polyorganosiloxane/polyorganosilane having one of the formulae (1) to (3): ##STR1## wherein A is a monovalent benzotriazole radical which comprises an acrylate or acrylamide functional group, which is bonded directly to a silicon atom, and which has the formula (4): ##STR2##
Abstract:
A cosmetic or dermatological composition with a depigmenting action comprises derivatives of 2,5-dihydroxyphenylcarboxylic acids, their homologs, and their salts, with the derivatives having the following structural formula: ##STR1## wherein: R.sub.1 represents OR.sub.5, OH, or ##STR2## R.sub.5 is a linear or branched C.sub.1 -C.sub.20 alkyl radical, a linear or branched C.sub.2 -C.sub.20 alkenyl radical, or a C.sub.1 -C.sub.20 alkyl radical substituted by one or more hydroxy or alkoxy groups;r' and r", identical or different, represent a hydrogen atom, a C.sub.1 -C.sub.20 alkyl radical, a C.sub.2 -C.sub.6 hydroxyalkyl radical, or a C.sub.3 -C.sub.6 polyhydroxyalkyl, or r' and r" taken together, with the nitrogen atom, form a heterocycle;the number of carbon atoms in the --(CH.sub.2).sub.n --COR.sub.1 chain is less than or equal to 21;R.sub.2 and R.sub.3, identical or different, represent a hydrogen atom, a linear or branched C.sub.1 -C.sub.4 alkyl radical, or a C.sub.1 -C.sub.4 alkoxy; R.sub.4 represents a hydrogen atom or a linear or branched C.sub. -C.sub.4 alkyl radical; andn is an integer from 0 to 20, provided that, when R.sub.2 and R.sub.3 represent a hydrogen atom, n is greater than or equal to 2.
Abstract:
An indoline product obtained by oxidizing at least one compound of formula (I), ##STR1## wherein R.sub.1 and R.sub.3 independently represent a hydrogen atom or a C.sub.1-4 alkyl grouping; R.sub.2 represents a hydrogen atom, a C.sub.1-4 alkyl grouping, a carboxyl grouping or C.sub.1-4 alkoxycarbonyl; R.sub.4 is a hydrogen atom, a C.sub.1-4 alkyl grouping, hydroxyl, C.sub.1-4 alkoxy, C.sub.1-10 amino or alkylamino, or halogen; R.sub.5 is a hydrogen atom, a hydroxyl grouping, C.sub.1-4 alkoxy or amino; with the proviso that at least one of the radicals R.sub.4 or R.sub.5 is a hydroxyl, alkoxy or amino grouping, and that when R.sub.5 is an amino grouping, R.sub.4 is not an alkylamino radical; R.sub.4 and R.sub.5 may also form a C.sub.1-2 alkylenedioxy ring and are in positions 5 and 6; and corresponding salts thereof. Said product may be used in cosmetics as make-up for the hair, eyebrows, eyelashes, nails, etc., and/or skin.
Abstract:
Topically applicable sunscreen/cosmetic compositions well suited for enhanced photoprotection of human skin and/or hair against the damaging effects of UV-A and UV-B irradiation, particularly solar radiation, comprise a photoprotecting effective amount of a novel triorganosilylated benzotriazole compound having the structural formula (1): ##STR1##
Abstract:
A N1,N4-dihydroxyethylated 2-nitro-p-phenylenediamine of formula (I), wherein R is C3-4 aklyl, and cosmetically acceptable salts thereof, for use in direct dyeing to give blue through purple shades which are wash-fast, light-fast, weatherproof and sweat resistant, and optionally combined with yellow and optionally read or orange-coloured dyes to give natural hues.
Abstract:
A cosmetic or dermatological composition with a depigmenting action comprises derivatives of 2,5-dihydroxyphenylcarboxylic acids, their homologs, and their salts, with the derivatives having the following structural formula: ##STR1## wherein: R.sub.1 represents OR.sub.5, or ##STR2## R.sub.5 is a hydrogen atom, a linear or branched C.sub.1 -C.sub.20 alkyl radical, a linear or branched C.sub.2 -C.sub.20 alkenyl radical, or a C.sub.1 -C.sub.20 alkyl radical substituted by one or more hydroxy or alkoxy groups; r' and r", identical or different, represent a hydrogen atom, a C.sub.1 -C.sub.20 alkyl radical, a C.sub.2 -C.sub.6 hydroxyalkyl radical, or a C.sub.3 -C.sub.6 polyhydroxyalkyl, or r' and r" taken together, with the nitrogen atom, form a heterocycle; the number of carbon atoms in the --(CH.sub.2).sub.n --COR.sub.1 chain is less than or equal to 21;R.sub.2 and R.sub.3, identical or different, represent a hydrogen atom, a linear or branched C.sub.1 -C.sub.4 alkyl radical, or a C.sub.1 -C.sub.4 alkoxy; R.sub.4 represents a hydrogen atom or a linear or branched C.sub.1 -C.sub.4 alkyl radical; and n is an integer from 0 to 20, provided that, when R.sub.2 and R.sub.3 represent a hydrogen atom, n is greater than or equal to 2.