Abstract: The present invention relates to a cosmetic and/or dermatological composition comprising in a physiologically acceptable medium at least one merocyanine derivative of formula (1) or (2) and/or its E,E-, E,Z- or Z,Z-geometrical isomer forms: comprising specific polar groups consisting of hydroxyl- and ether-functionalities. Another object of the present invention relates to a cosmetic process for controlling and/or improving the darkening of the skin under exposure to UV radiation and the homogeneity of the colour of the complexion which comprises the application onto the skin of a cosmetic composition as above defined. Another object of the present invention relates to a cosmetic process for protecting the keratinic materials and particularly the skin against photo-ageing which comprises the application onto the keratinic material of a cosmetic composition as above defined.

Abstract: The present invention relates to a composition comprising, in a cosmetically acceptable carrier, at least one UV screening system, characterized in that it comprises: (i) at least one screening agent of lipophilic hydroxybenzophenone type; and (ii) at least one silicon-comprising s-triazine of formula (III) substituted by at least two alkylaminobenzoate groups. In some embodiments, the composition also includes: (iii) a dibenzoylmethane derivative.

Abstract: The process for preparing 2-hydroxyphenyl alkenyl benzotriazole compounds and the process for preparing siloxane compounds containing 2-hydroxyphenyl benzotriazole function are disclosed.

Abstract: Disclosed is an infrared optical sensor for the continuous analysis of a liquid flowing in a pipe. The sensor includes, in a housing, a central section of duct through which the liquid to be analyzed flows, and a spectral analysis device using a light beam, including an infrared source which emits a signal which is received by a receiving device having passed through the liquid, an optical component which allows the light beam to pass through the liquid, and a support plate which carries the infrared source and the receiving device. The liquid to be analyzed circulates through a loop formed by walls in the form of an arch of the optical component and by a projection of the housing in the optical component. A sealing gasket is compressed between the optical component and the housing, in order to prevent any diffusion of liquid on the interior of the housing.

Abstract: The present invention relates to the use of at least one 2-methylsuccinic acid diester derivative of formula (I) below: in a composition comprising, in a cosmetically acceptable medium, at least one liquid fatty phase and at least one lipophilic active agent, for dissolving the said active agent in the said liquid fatty phase and/or for improving the solubility of the said active agent in the said solid fatty phase. The present invention relates especially to a composition comprising, in a cosmetically acceptable medium, at least one liquid fatty phase, characterized in that it contains at least one 2-methylsuccinic acid ester derivative of formula (I) and at least one lipophilic active agent.

Abstract: The present invention relates to a cosmetic composition containing a combination i) of at least one screening agent of the dibenzoylmethane derivative type and ii) of at least one particular hydrophilic or water-soluble merocyanin UV-screening agent, especially corresponding to one of the formulae (I) or (II) below: in which at least one or two of the radicals contain: either an alkylsulfonate radical in its acid or salified form or one or two hydroxyl radicals. The invention also relates to a process for the radiation-photostabilization of at least one screening agent of the dibenzoylmethane derivative type with an effective amount of at least one particular hydrophilic or water-soluble merocyanin UV-screening agent, especially corresponding to one of the formulae (I) or (II).

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 present invention relates to a cosmetic composition containing a combination i) of at least one screening agent of the dibenzoylmethane derivative type and ii) of at least one particular hydrophilic or water-soluble merocyanin UV-screening agent, especially corresponding to one of the formulae (I) or (II) below: in which at least one or two of the radicals contain: either an alkylsulfonate radical in its acid or salified form, or one or two hydroxyl radicals. The invention also relates to a process for the radiation-photostabilization of at least one screening agent of the dibenzoylmethane derivative type with an effective amount of at least one particular hydrophilic or water-soluble merocyanin UV-screening agent, especially corresponding to one of the formulae (I) or (II).

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: UV-photoprotective, topically applicable cosmetic/dermatological compositions contain: (a) at least one silicon-containing s-triazine substituted with two aminobenzoate or aminobenzamide groups of specific formula (I), and (b) at least one non-silicon-containing lipophilic 1,3,5-triazine compound UV-screening agent, such compositions having improved photoprotective effectiveness in the UV-B range and the 1,3,5-triazine compound(s) being improvedly soluble therein.

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: The present invention relates to a cosmetic and/or dermatological composition comprising in a physiologically acceptable medium at least one merocyanine derivative of formula (1) or (2) and/or its E,E-, E,Z- or Z,Z-geometrical isomer forms: comprising specific polar groups consisting of hydroxyl- and ether-functionalities. Another object of the present invention relates to a cosmetic process for controlling and/or improving the darkening of the skin under exposure to UV radiation and the homogeneity of the colour of the complexion which comprises the application onto the skin of a cosmetic composition as above defined. Another object of the present invention relates to a cosmetic process for protecting the keratinic materials and particularly the skin against photo-ageing which comprises the application onto the keratinic material of a cosmetic composition as above defined.

Abstract: Disclosed is an infrared optical sensor for the continuous analysis of a liquid flowing in a pipe. The sensor includes, in a housing, a central section of duct through which the liquid to be analyzed flows, and a spectral analysis device using a light beam, including an infrared source which emits a signal which is received by a receiving device having passed through the liquid, an optical component which allows the light beam to pass through the liquid, and a support plate which carries the infrared source and the receiving device. The liquid to be analyzed circulates through a loop formed by walls in the form of an arch of the optical component and by a projection of the housing in the optical component. A sealing gasket is compressed between the optical component and the housing, in order to prevent any diffusion of liquid on the interior of the housing.

Abstract: UV-photostable, topically applicable cosmetic/dermatological compositions contain at least one dibenzoylmethane UV-sunscreen compound and at least one photostabilizing silicon-containing s-triazine compound substituted with two aminobenzoate or aminobenzamide groups.

Abstract: The present invention relates to the use of at least one piperidine ester derivative of formula (I) below: in which: R1 is a linear or branched C1-C12 alkyl radical, R2 is a linear or branched C1-C20 alkyl radical, with the proviso that the sum of the carbon atoms for R1 and R2 is between 2 and 22, in a composition comprising, in a cosmetically acceptable medium, at least one liquid fatty phase and at least one lipophilic active agent, and containing no dibenzoylmethane-type UV screening agent, as a solvent for said active agent in said liquid fatty phase and/or as an agent improving the solubility of said active agent in said fatty phase. The present invention also relates to a composition comprising, in a cosmetically acceptable medium, at least one liquid fatty phase, characterized in that it comprises at least one piperidine ester derivative of formula (I) as defined above and in that it does not contain a dibenzoylmethane-type UV screening agent.

Abstract: The present invention relates to the use of at least one 2-methylsuccinic acid diester 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, for dissolving the said active agent in the said liquid fatty phase and/or for improving the solubility of the said active agent in the said solid fatty phase. The present invention relates especially to a composition comprising, in a cosmetically acceptable medium, at least one liquid fatty phase, characterized in that it contains at least one 2-methylsuccinic acid ester derivative of formula (I) and at least one lipophilic active agent.

Abstract: The process for preparing 2-hydroxyphenyl alkenyl benzotriazole compounds and the process for preparing siloxane compounds containing 2-hydroxyphenyl benzotriazole function are disclosed.

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 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: The present invention relates to a cosmetic composition containing a combination i) of at least one screening agent of the dibenzoylmethane derivative type and ii) of at least one particular hydrophilic or water-soluble merocyanin UV-screening agent, especially corresponding to one of the formulae (I) or (II) below: in which at least one or two of the radicals contain: either an alkylsulfonate radical in its acid or salified form, or one or two hydroxyl radicals. The invention also relates to a process for the radiation-photostabilization of at least one screening agent of the dibenzoylmethane derivative type with an effective amount of at least one particular hydrophilic or water-soluble merocyanin UV-screening agent, especially corresponding to one of the formulae (I) or (II).