PHOTOPROTECTIVE COMPOSITIONS COMPRISING PHOTOSENSITIVE 1,3,5-TRIAZINE COMPOUNDS, DIBENZOYLMETHANE COMPOUNDS AND SILICEOUS S-TRIAZINES SUBSTITUTED WITH TWO AMINOBENZOATE OR AMINOBENZAMIDE GROUPS
申请人:L'OREAL
公开号:US20170135933A1
公开(公告)日:2017-05-18
UV-photoprotective, topically applicable cosmetic/dermatological compositions contain:
(a) at least one dibenzoylmethane compound,
(b) at least one 1,3,5-triazine compound that is photosensitive in the presence of a dibenzoylmethane compound, and
(c) at least one siliceous s-triazine compound substituted with two aminobenzoate or aminobenzamide groups, or a tautomeric form thereof, the 1,3,5-triazine compounds being improvedly photostable in such compositions.
The present invention relates to improved sunscreen compositions, more preferably to improved sunscreen compositions containing at least one sunscreening agent (sunscreen) and a silicone-polyamide copolymer.
Variations in the Blaise Reaction: Conceptually New Synthesis of 3-Amino Enones and 1,3-Diketones
作者:H. Surya Prakash Rao、Nandurka Muthanna
DOI:10.1002/ejoc.201403402
日期:2015.3
2-bromoethanones. The reaction is a variation of the classical Blaisereaction, and it works with zinc and trimethylsilyl chloride as an activator. By running the hydrolysis of the reaction intermediate with HCl (3 n aq.) at 0–30 °C or at 100 °C, it is possible to form either 3-aminoenones or 1,3-diketones, respectively. The newly developed method was used for the synthesis of avobenzone, an ingredient
具有 3-氨基烯酮或 1,3-二酮官能团的有机化合物非常重要,因为它们可以转化为大量的杂环或碳环化合物,或者可以用作金属配合物中的配体。我们已经实现了从芳基/杂芳基/烷基腈和 1-芳基/烷基 2-溴乙酮开始的 3-氨基烯酮和 1,3-二酮的新的、简单、直接和方便的合成。该反应是经典布莱斯反应的变体,它以锌和三甲基氯硅烷作为活化剂起作用。通过在 0–30 °C 或 100 °C 下用 HCl (3 n aq.) 进行反应中间体的水解,可以分别形成 3-氨基烯酮或 1,3-二酮。新开发的方法用于合成防晒乳液的一种成分阿伏苯宗。此外,
Cosmetic compositions comprising photostabilized dibenzoylmethane compounds and 2-pyrrolidinone-4- carboxy esters
申请人:Richard Hervé
公开号:US20100183529A1
公开(公告)日:2010-07-22
Photostable cosmetic compositions contain, formulated into a cosmetically acceptable vehicle, at least one UV-screening system that includes:
(a) at least one dibenzoylmethane compound, and
(b) at least one 2-pyrrolidinone-4-carboxy ester compound having the following formula (I):
in which:
R
1
is a linear or branched C
1
-C
20
alkyl radical, and
R
2
is a linear or branched C
1
-C
20
alkyl radical which optionally includes a C
5
-C
6
ring member, the phenyl radical, the benzyl radical or the phenethyl radical.
Photostable, topically applicable cosmetic/dermatological compositions contain at least one dibenzoylmethane sunscreen compound and at least one photostabilizing siloxane-containing arylalkyl amide compound of formula (I) below: