Abstract:
The present invention relates to novel insoluble s-triazine derivatives bearing benzotriazole and/or benzothiazole groups, to a process for their preparation and to their uses in particulate form as UV screening agents, in particular in the cosmetic field.The present invention also relates to the application of these compounds in particular to protecting the skin and the hair against ultraviolet radiation.
Abstract:
A process for preparing a siloxane compound comprising a 2-hydroxyphenyl benzotriazole function which comprises at least one step in which a reaction for hydrosilylation of a compound 2-hydroxyphenyl benzotriazole comprising a substituent having a terminal double bond with a siloxane compound comprising an SiH function is carried out in the presence of a catalyst and of at least one volatile organic solvent corresponding to one of formula (VII) or (VIII). in which R4 and R5, which may be identical or different, represent a linear or branched C1-C4 alkyl radical, with the proviso that the sum of the carbons of R4 and R5 is less than or equal to 6;y is and integer between 1 and 3;R6 which may be identical or different, are linear or branched C1-C3 alkyl radicals, with the proviso that the sum of the carbons of R6 is less than or equal to 6 is disclosed.
Abstract:
The invention relates to a composition comprising, in a cosmetically acceptable medium, at least one specific siloxane-containing arylalkyl benzoate amide derivative of formula (I) and more particularly to a composition comprising, in a cosmetically acceptable medium, at least one liquid fatty phase and at least one low-solubility lipophilic active agent, in particular a low-solubility lipophilic organic screening agent, such as triazine derivatives, dibenzoylmethane derivatives or benzophenone derivatives. The present invention relates to the use of at least one specific siloxane-containing arylalkyl benzoate amide derivative of formula (I) in a composition comprising, in a cosmetically acceptable medium, at least one liquid fatty phase and at least one lipophilic active agent as mentioned above, as solvent for said active agent in said liquid fatty phase, and also for the purpose of improving the effectiveness of said lipophilic active agent and/or the cosmetic qualities and/or the stability of said composition. The present invention also relates to novel siloxane- containing arylalkyl benzoate amide compounds of formula (I).
Abstract:
The present invention relates to a cosmetic composition comprising the combination i) of at least one screening agent of the dibenzoylmethane derivative type and ii) of at least one specific merocyanine dicyano or cyanoacetate derivative. It also relates to a method for the photostabilization, with regard to radiation, of at least one screening agent of the dibenzoylmethane derivative type by an effective amount of at least one specific merocyanine dicyano or cyanoacetate derivative.
Abstract:
PROBLEM TO BE SOLVED: To obtain a new composition for the oxidation dyeing of keratin fibers from a reactive oxidative compound having strong dyeability, especially a dyeing composition which hardly damages the keratin fibers, has resistance against external factors such as shampoo and light, and can develop various strong colors, and to provide a dyeing method and a dyeing kit using the compo sition. SOLUTION: The dyeing composition containing a specified para-aminophenol or para-phenylenediamine derivative having a silane substituent as the oxidative component is prepared.
Abstract:
PROBLEM TO BE SOLVED: To obtain a novel compound that can absorb ultraviolet rays and is suitably useful as a sun-screening agent excellent in lipophilicity and cosmetic properties. SOLUTION: This compound is represented by formula I [R1 is -NH-F; R2 is -N-NH-Z-W; R3 is R1 , R2 , a 1-20C alkyl, a 2-20C hydroxyalkyl; F is a screening chromophoric group; Z is a divalent group bridging -NH- and -W; W is a group of formula II (R is a 1-30C hydrocarbon; a is 1, 2)], typically 2-(buty 1-4'-ylaminobenzoate)-4,6-bis [,3,3,3tetramethyl-1-[(trimethylsilyl) oxy]disiloxanyl]propyl-3-ylamino}-striazine. The compound of formula I is prepared by reaction of a compound of the formula III (X is chlorine car bromine) with a compound of the formula: R1 H, a compound of the formula: R2 H and the compound of the formula: R3 H.
Abstract:
The present invention relates to a composition including, in a cosmetically acceptable medium, at least one UV-filtering system, characterized in that it includes: (i) at least one lipophilic hydroxybenzophenone filter; and (ii) at least one silicon s-triazine of formula (III) substituted by at least two alkylaminobenzoate groups. The present invention also relates to a composition including, in a cosmetically acceptable medium, at least one UV-filtering system, characterized in that it includes: (i) at least one dibenzoylmethane derivative; (ii) at least one lipophilic hydroxybenzophenone UV filter; and (iii) at least one silicon s-triazine substituted by at least two alkylaminobenzoate groups of formula (III). The present invention also relates to a method for photostabilization with regard to radiation by an effective amount for at least one dibenzoylmethane-derivative filter, for at least one lipophilic hydroxybenzophenone UV filter as defined in the previous claims, and for at least one silicon s-triazine substituted by at least two aminobenzoate grouping of formula (III).
Abstract:
The present invention relates to a cosmetic composition containing the combination of a dibenzoylmethane derivative and of a specific phenol or bisphenol compound of formula (I) or (II). It also relates to a process for the photostabilization, against radiation, of at least one dibenzoylmethane derivative with at least one phenol or bisphenol derivative of formula (I) or (II). The present invention also relates to the use of said phenol or bisphenol derivative of formula (I) or (II) in a composition comprising, in a cosmetically acceptable support, at least one UV-A-screening agent of the dibenzoylmethane derivative type, with the aim of improving the effectiveness of said composition against UV-A rays.