摘要:
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.
摘要:
Novel s-triazine sunscreens have the structural formula (I): and are formulated into cosmetic/dermatological photoprotective compositions useful for photoprotecting keratinous substances against the damaging effects of UV-radiation.
摘要:
The present invention relates to a composition comprising, in a cosmetically acceptable medium, at least one ester derived from 4-carboxy-2-pyrrolidinone, of formula (I) below: in which: R1 denotes a linear or branched C1-C20 alkyl radical, R2 denotes a linear or branched C1-C20 alkyl radical that may contain a C5-C6 ring, the phenyl radical, the benzyl radical or the phenethyl radical, and at least one benzophenone-type lipophilic UV screening agent. The present invention also relates to the use of at least one ester derived from 4-carboxy-2-pyrrolidinone, of formula (I), as defined above, in a composition comprising, in a cosmetically acceptable medium, at least one benzophenone-type lipophilic UV screening agent, as a solvent for said benzophenone screening agent, in and/or as an agent for improving the solubility of said benzophenone screening agent in said composition or with the aim of improving the sun protection factor.
摘要:
The present invention relates to the use of at least one caprolactam derivative of formula (I) below: in which: n=0 or 1; m=0 or 1; p=0 to 13; R1 is a linear or branched alkyl radical comprising a number t of carbon atoms of from 1 to 20; subject to the following conditions: (i) when p=0, m=0, (ii) when p=1 and n=1, m=1, (iii) when p=1 and n=0, m=0 and R1 denotes a C2-C20 alkyl radical; with the proviso that the sum of p+t is between 3 and 20, 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 the solid 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 caprolactam derivative of formula (I) as defined above and in that it does not contain a dibenzoylmethane-type UV screening agent.
摘要:
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; (ii) at least one silicon-comprising s-triazine of formula (III) substituted by at least two alkylaminobenzoate groups. The present invention also 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 dibenzoylmethane derivative; (ii) at one UV screening agent of lipophilic 2-hydroxybenzophenone type; and (iii) at least one silicon-comprising s-triazine substituted by at least two alkylaminobenzoate groups of formula (III). The present invention also relates to a method for the photostabilization with regard to radiation of at least one screening agent of the type derived from dibenzoylmethane by an effective amount of at least one UV screening agent of lipophilic 2-hydroxybenzophenone type as defined in the preceding claims and of at least one silicon-comprising s-triazine substituted by at least two aminobenzoate groups of formula (III).
摘要:
The invention relates to novel s-triazine derivatives containing at least two particular silane aminobenzoate or silane aminobenzamide groups and to their cosmetic uses. The invention also relates to photoprotective compositions comprising s-triazine derivatives containing at least two particular grafted silane aminobenzoate or silane aminobenzamide groups as sunscreens that are active in the UV-B radiation range.
摘要:
The invention relates to the use of at least one agent for screening out light radiation with a wavelength ranging from 370 to 500 nm as an agent for inhibiting the degradation of endogenous carotenoids present in the skin. The invention is useful for treating skin disorders caused by sunlight (e.g., solar urticaria, actinic dermatitis and pigmentation marks). The invention also relates to novel aminoaryl-vinyl-s-triazine compounds and to the use thereof as agents for screening out light radiation ranging from 370 to 500 nm.
摘要:
Photostable, topically applicable cosmetic/dermatological compositions contain at least one dibenzoylmethane compound UV-A sunscreen and at least one merocyanine sulfone compound.
摘要:
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.
摘要:
Novel 4,4-diarylbutadiene-substituted methyltrialkylsilanes having the structural formula (I): are useful sunscreens for UV-photoprotecting human skin against the damaging effects of UV-radiation, notably UV-A radiation.