Abstract:
The cosmetic use is described, in particular for use as a UV filter, of benzalmalonate diorganopolysiloxanes having either formula: ##STR1## where R is C.sub.1 -C.sub.10 alkyl, phenyl or 3,3,3-trifluoropropyl, B is R or A, r=0-200, s=0-50, or formula: ##STR2## where u=1-20, t=0-20 and t+u.gtoreq.3. A and/or B represent an alkylene or alkyleneoxy benzalmalonate which may be substituted.
Abstract:
New chloro-meta-phenylenediamines, their use as couplers in the oxidation dyeing of keratinous fibres, dyeing compositions for hair containing these compounds and dyeing process using the said compositions.The invention relates to the compounds of formula: ##STR1## in which Z and Z' denote, independently of one another, an alkyl radical having from 1 to 4 carbon atoms or a hydroxyalkyl radical having from 2 to 4 carbon atoms, andR.sub.1 and R.sub.2 denote, independently of one another, a hydrogen atom, an alkyl radical having from 1 to 4 carbon atoms or a mono- or polyhydroxyalkyl radical having 2 or 3 carbon atoms, to their addition salts with an acid, and to their use by way of couplers for the oxidation dyeing of keratinous fibres, especially human hair.These compounds, when they are combined with paraphenylenediamines, surprisingly give beige to light brown hues or purple hues of greater of lesser redness, depending on the substitution of the 5-amino group of the chlorobenzene.
Abstract:
According to this process, one effects a stereospecific reduction of the two hydroxyl groups of an ether-diol by a mixture (titanium trichloride, lithium aluminum hydride) at a temperature between 5.degree. C. and about 40.degree. C. and that optionally, one converts the resulting ether into vitamin A, retinol or retinoic acid.Application to the synthesis of all-trans compounds selected from the group consisting of vitamin A and its ethers, retinol and retinoic acid, and their 13-cis isomers.
Abstract:
An anti-oxidant system contains, in combination, at least one stabilized ascorbyl ester, at least one tocopherol or a mixture of tocopherols, or cafeic acid or a derivative thereof, at least one complexing agent and at least one non-thiol polypeptide. The anti-oxidant system is employed to stabilize fatty bodies and cosmetic compositions.
Abstract:
Linear and cyclic diorganopolysiloxanes containing benzotriazole functional groups are well suited for the coating of optical fibers and for lubricating plastics, e.g., PVC.
Abstract:
The cosmetic use is described, in particular for use as a UV filter, of benzotriazole diorganopolysiloxanes having either formula: ##STR1## where R is C.sub.1 -C.sub.10 alkyl, phenyl or 3,3,3-trifluoropropyl, B is R or A, r=0-200, s=0-50, or formulas: ##STR2## where u=1-20, t=0-20 and t+u.gtoreq.3.A and/or B represent a benzotriazole C.sub.3 -C.sub.12 alkylene which may be substituted.
Abstract:
Compound, corresponding to the formulaC.sub.8 H.sub.17 (C.tbd.C--CH.sub.2).sub.3 CH.sub.2 CH.sub.2 COR (I)in which R is a C.sub.1 -C.sub.8 lower alkoxy or C.sub.4 -C.sub.6 cycloaly group, substituted with one or more hydroxyl groups and/or interrupted by one or more hetero atoms chosen from oxygen and sulphur, an amino group of structure ##STR1## in which R.sub.1 or R.sub.2, which may be identical or different, denote a hydrogen atom or a linear or branched C.sub.1 -C.sub.8 lower alkyl radical, optionally interrupted by one or more hetero atoms chosen from oxygen, sulphur and nitrogen, this alkyl radical being able to be substituted with one or more hydroxyl groups, R.sub.1 and R.sub.2 not being able to denote hydrogen simultaneously, or alternatively R.sub.1 and R.sub.2 form, together with the nitrogen atom, a heterocyclic system optionally containing oxygen, sulphur or nitrogen as an additional hetero atom, one of the radicals R.sub.1 and R.sub.2 also being able to denote, when the other is a hydrogen atom, an aryl radical of formula (II): ##STR2## or alternatively a benzyl radical of formula (III): ##STR3## in which formulae R.sub.3 and R.sub.4, denote, independently of each other, a hydrogen atom, a C.sub.1 -C.sub.4 alkyl radical, a hydroxyl group, a halogen atom or a carboxyl or trifluoromethyl group, the amine group also being able to originate from a sugar, and also the isomers and salts thereof which are pharmaceutically and cosmetically acceptable.
Abstract:
The present invention relates to a process for preparing a N,N'-disubstituted nitro-para-phenylenediamine (I) according to the following scheme: ##STR1## X denoting a halogen and R a lower alkyl, lower mono- or polyhydroxyalkyl, lower alkoxyalkyl or lower aminoalkyl group, in which the amino group can be mono- or disubstituted with a lower alkyl or lower mono- or polyhydroxyalkyl group, the nitrogen atom of said amino group being able to form part of a heterocyclic system.The invention also relates to the intermediate oxazolidones of formulae (II) and (III), and the new nitro-para-phenylenediamines in which R denotes a lower alkoxyalkyl, lower polyhydroxyalkyl or lower aminoalkyl group, as well as the dyeing compositions for keratinous fibres containing these new nitro-para-phenylenediamines.
Abstract:
Polyaminoamides of formula: ##STR1## in which A.sub.1 represents a divalent radical of structure: ##STR2## in which a and b=0 or 1 ##STR3## in which c and d=0 or 1 ##STR4## B.sub.1 represents: 1) in the proportions of 60 to 100% (in moles), the radical ##STR5## in which x.sub.2 =2 and n.sub.1 =1 or 2, or alternatively, x.sub.1 =3 and n.sub.1 =1 and e=0 or 12) in the proportions of 0 to 40% (in moles), the radical (II) above in which x.sub.1 =2 and n.sub.1 =0 or the radical ##STR6## 3) in the proportions of 0 to 20% (in moles), the radical--NH--(CH.sub.2).sub.6 --NH--;in radicals A.sub.1 and B.sub.1, Y represents a residue of an ultraviolet radiation-absorbing molecule, anda+b+c+d+e.gtoreq.1, it being understood that when a, b, c, d or e are zero, the nitrogen atom is then bound to a hydrogen atom;the ratio ##EQU1## is between 0.05 and 0.5; A.sub.2 represents a bivalent radical which has one of the following structures: ##STR7## B.sub.2 represents: 1) in the proportions of 60 to 100% (in moles), the radical ##STR8## in which x.sub.2 =2 and n.sub.2 =2 or 3, or alternatively, x.sub.2 =3 and n.sub.2 =22) in the proportions of 0 to 40% (in moles), the radical (III) above in which x.sub.2 =2 and n.sub.2 =1 or the radical ##STR9## 3) in the proportions of 0 to 20% (in moles), the radical--NH--(CH.sub.2).sub.6 --NH-- process for their preparation and their use as sunlight filters for hair and skin.
Abstract:
The invention relates to p-phenylenediamines of formula: ##STR1## in which R.sub.1 denotes an alkyl, hydroxyalkyl or polyhydroxyalkyl radical and R.sub.2 denotes a hydrogen atom or an alkyl radical, as well as the corresponding salts with acids, and to the compositions and the process for dyeing keratinous fibres, and especially hair, employing them.