63250-26-0

Upstream product

• 20185-55-1 p-isopropylbenzoic acid methyl ester 
• 645-13-6 4-isopropylacetophenone 

Downstream Products

• 1390642-29-1 bis(4-isopropylbenzoyl)methanatoboron difluoride 

Relevant academic research and scientific papers

White light emission from a single component system: Remarkable concentration effects on the fluorescence of 1,3-diaroylmethanatoboron difluoride

Concentration effects on the fluorescence (FL) emission of 1,3-dibenzoylmethanatoboron difluoride (1aBF2) and its diisopropyl derivative (1bBF2) in KBr and CH2Cl2 were investigated. Powder samples of 1aBF2 and 1bBF2 in KBr exhibit yellow and white FL emissions, respectively, whose intensities and wavelengths are not significantly affected by concentration. In contrast, remarkable concentration effects on FL properties of these compounds in CH 2Cl2 solutions were observed. Increases in the concentrations of 1aBF2 and 1bBF2 from 1 × 10 -7 to ca. 2 × 10-1 M lead to dramatic changes in the FL colors from blue (398 and 411 nm, respectively) to yellow (548 and 558 nm) via white. Careful analysis of the FL spectra, involving lifetime determinations and wave deconvolutions, reveals that emissions from 1BF2 involve two FL domains, corresponding to an excited monomer and an excimer, and that concentration increases promote a continuous change from the former to the latter major FL domain. Thus, white FL of 1aBF2 and 1bBF2 is achieved by modulation of the dual FL of the excited monomer (blue) and excimer (yellow). These findings indicate that 1,3-diaroylmethanatoboron difluoride (1BF2) represents a new white emitting material that has advantageous features which arise from the fact that it is an easily prepared, low molecular weight, single component system not containing a heavy metal atom.

Photoprotective compositions comprising photosensitive 1,3,5-triazine compounds, dibenzoylmethane compounds and siliceous s-triazines substituted with two aminobenzoate or aminobenzamide groups

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.

PARTICULATE UV PROTECTION AGENT

The present invention relates to particulate UV protection agents which are obtainable by hydrothermal treatment of a particulate metal oxide and subsequent application of a manganese oxide coating, and to the preparation and use thereof. The present invention furthermore relates to novel compositions, in particular for topical application, which are intended, in particular, for light protection of the skin and/or hair against UV radiation and free-radical-induced stress, and to the use thereof in the above-mentioned cosmetic application.

Cosmetic/sunscreen compositions containing dibenzoylmethane compounds and dithiolane compound photostabilizers therefor

Cosmetic/sunscreen compositions contain a combination of at least one dibenzoylmethane sunscreen compound and a photostabilizing amount of at least one dithiolane compound of formula (I) below:

Photostable cosmetic compositions comprising dibenzoylmethane/pyrrolidinone compounds

Photostable UV-photoprotecting cosmetic sunscreen compositions contain (a) an effective UV-photoprotecting amount of at least one dibenzoylmethane compound sunscreen, (b) an effective radiation-photostablizing amount of at least one pyrrolidinone compound having the formula (I) below: and, advantageously, at least one liquid fatty phase and at least one lipophilic active sunscreen agent of low solubility, formulated into (c) a cosmetically acceptable support therefor.

Photoprotective cosmetic compositions comprising photostabilized dibenzoylmethane compounds and siloxane-containing arylalkyl benzoate amide compounds

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:

Photostable UV-screening compositions comprising dibenzoylmethane/diarylbutadiene compounds

Topically applicable, photostable cosmetic/dermatological UV-screening compositions comprise (a) at least one photolabile UV-screening dibenzoylmethane compound and (b) a dibenzoylmethane photostabilizing amount of at least one 4,4-diarylbutadiene compound, formulated into a topically applicable, cosmetically/dermatologically acceptable support therefor; the weight ratio of the 4,4-diarylbutadiene compound(s) to the diarylbutadiene compound(s) is characteristically greater than 2.5 and the subject compositions are advantageously devoid of any cinnamate sunscreen.

Photoprotective UV-screening compositions comprising triazine/dibenzoylmethane/diarylbutadiene compounds

Topically applicable, photostable cosmetic/dermatological UV-screening compositions suited for photoprotecting the skin and the hair, comprise (a) at least one UV-screening dibenzoylmethane compound, (b) at least one UV-screening 1,3,5-triazine compound that is photosensitive in the presence of a dibenzoylmethane compound, and (c) a 1,3,5-triazine photostabilizing amount of at least one 4,4-diarylbutadiene compound, formulated into a topically applicable, cosmetically/dermatologically acceptable support therefor; the weight ratio of the 4,4-diarylbutadiene compound(s) to the dibenzoylmethane compound(s) is characteristically greater than 2.5 and the subject compositions are advantageously devoid of any cinnamate sunscreen.

Photostable photoprotective UV-screening compositions comprising dibenzoylmethane/methyl-benzylidenecamphor/diarylbutadiene compounds

Topically applicable, photostable cosmetic/dermatological UV-screening compositions comprise (a) at least one UV-screening dibenzoylmethane compound, (b) p-methylbenzylidenecamphor, and (c) a methylbenzylidenecamphor photostabilizing amount of at least one 4,4-diarylbutadiene compound, formulated into a topically applicable, cosmetically/dermatologically acceptable support therefor; the weight ratio of the 4,4-diarylbutadiene compound(s) to the dibenzoylmethane compound(s) is characteristically greater than 2.5 and the subject compositions are advantageously devoid of any cinnamate sunscreen.

Photostabilized dibenzoylmethane sunscreens immobilized within sol/gel matrices

Photoprotective cosmetic/dermatological compositions well suited for the UV-photoprotection of the skin, hair, nails, eyebrows, eyelashes and/or lips, contain an effective photostable and UV-photoprotecting amount of at least one dibenzoylmethane organic sunscreen immobilized within a matrix prepared via sol-gel process from at least one silicon alkoxide, at least one non-ionic surfactant and water, but in the absence of any organic solvent, formulated into a topically applicable, cosmetically/dermatologically acceptable medium therefor.