107 results about "Dibenzoylmethane" patented technology

A sunscreen composition containing a UV-A dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL TM 1789), and a stabilizer for the dibenzoylmethane derivative having structure (I): wherein each R', same or different, is an alkyl group, straight or branched chain, having 1 to 22 carbon atoms. These diesters of structure (I) are quite effective in stabilizing the dibenzoylmethane derivative UV-A filter compounds making them more effective, and effective for longer periods of time.

There is provided a photostable and synergistically enhanced topical sunscreen composition. There is further provided a method of enhancing the photostability of a sunscreen active in a topical sunscreen composition. There is further still provided a method of synergistically enhancing the UV absorbance of a sunscreen active in a topical sunscreen composition. The preferred compositions and methods of the present invention use a dibenzoylmethane sunscreen active, an extract of Kaempferia Galanga, and a cosmetically acceptable vehicle.

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.

Improvedly effective and photostable sunscreen compositions combine a dibenzoylmethane screening agent and a specific arylalkyl amide or ester compound of the following formulae (I), (II) or (III):

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:R1 is a linear or branched C1-C20 alkyl radical, andR2 is a linear or branched C1-C20 alkyl radical which optionally includes a C5-C6 ring member, the phenyl radical, the benzyl radical or the phenethyl radical.

Topically applicable photostable sunscreen / photoprotective compositions contain at least one dibenzoylmethane UV-sunscreen and an effective photostabilizing amount therefor of at least one amphiphilic block copolymer which comprises at least one nonionic hydrophilic polymer block and at least one hydrophobic polymer block, formulated into a topically applicable, cosmetically acceptable medium therefor.

The invention provides a visualization reagent architecture that is used for peroxydase measurement and a preparation method thereof. The visualization reagent architecture comprises urea peroxide, a heavy metal ion complexing agent and a compound of 4-tert-butyl-4'-methoxy-dibenzoylmethane, 3.3' 5.5'-tetramethylbenzidine and sodium hyposulfite, the preparation method of the architecture comprises the following steps: (1) a storage liquid I is prepared and ready for use, and a storage liquid II is prepared and ready for use; and (2) the storage liquid I and the storage liquid II are mixed, pH value of a buffering liquid is adjusted and volume is limited. Peroxides and chromophoric substrates in the visualization reagent architecture that is provided by the invention can coexist stably without reaction for a long time, thus leading the solution architecture to be easily stored and have consistent sensitivity during measurement.

The invention relates to a medical polyvinyl chloride (PVC) material for gamma-ray irradiation disinfection and a preparation method thereof. The medical PVC material comprises 100 parts of PVC resin, 40 to 70 parts of a plasticizer dioctyl phthalate (DOP), 1.0 to 1.5 parts of a calcium / zinc heat stabilizer, 5 to 8 parts of an auxiliary heat stabilizer, 0.3 to 0.5 parts of a yellowing inhibitor, 0.1 to 0.5 parts of an anti-oxidant and 0.5 to 0.8 parts of a lubricant, wherein the PVC resin is a suspension PVC resin having a polymerization degree of 2500 to 3000; the calcium / zinc heat stabilizer is a complex composed of 50 to 60% of ricinic acid calcium, 10 to 15% of zinc octanoate, 10 to 15% of zine stearate and 10 to 25% of sorbierite; the auxiliary heat stabilizer is epoxidized linseed oil; the lubricant is composed of 40 to 60% of stearic acid and 40 to 60% of polyethylene wax; the yellowing inhibitor is octadecyl-dibenzoylmethane; and the anti-oxidant is an anti-oxidant 1076 produced by the Ciba specialty chemicals Ltd. The medical PVC material solves the problems that after being subjected to irradiation disinfection, the existing PVC material yellows because of degradation breaking of PVC macromolecules; mechanical properties are reduced; and ageing is accelerated. The preparation method of the medical PVC material can obviously improve a PVC material anti-irradiation capability.

Topically applicable, improvedly photostabilized, photoprotective cosmetic / dermatological compositions contain (i) an effective UV-screening amount of at least one dibenzoylmethane sunscreen and an effective photostabilizing amount of (ii) at least one arylalkyl benzoate compound and (iii) at least one compound accepting the excited triplet level energy of said at least one dibenzoylmethane sunscreen, formulated into (iv) a topically applicable, cosmetically / dermatologically acceptable support 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:

Topically applicable, improvedly photostabilized, photoprotective cosmetic / dermatological compositions contain (i) an effective UV-screening amount of at least one dibenzoylmethane sunscreen and an effective photostabilizing amount of (ii) at least one oil containing at least one amide structural unit and (iii) at least one compound accepting the excited triplet level energy of said at least one dibenzoylmethane sunscreen, formulated into (iv) a topically applicable, cosmetically / dermatologically acceptable support therefor.

Topically applicable, improvedly photostabilized, photoprotective cosmetic / dermatological compositions contain (i) an effective UV-screening amount of at least one dibenzoylmethane sunscreen and an effective photostabilizing amount of (ii) at least one bis-resorcinyl triazine compound and (iii) at least one compound accepting the excited triplet level energy of said at least one dibenzoylmethane sunscreen, notably at least one 4-hydroxybenzylidenemalonate compound, 4-hydroxycinnamate compound, fluorene compound, piperidinol salt, or mixture thereof, formulated into (iv) a topically applicable, cosmetically / dermatologically acceptable support therefor.

The invention relates to a novel metal complex and application thereof in an organic luminescent device. The structural general formula of the metal iridium complex for near infrared luminescence is LnIrX(3-n), wherein X is selected from acetylacetone, dibenzoylmethane, dipivaloylmethane or picolinic acid; n is selected from 1, 2 or 3; L is selected from the following structural formula L1, L2 or L3; R1-R9 are independently selected from H, C1-10 alkyl, C1-10 alkoxy, C1-10 alkylamino, carbazolyl, F, trifluoromethyl and C5-18 aryl respectively; and Ar represents C5-18 aryl and C5-18 heterocyclic aryl. The metal complex has the advantages of short luminescence life and high luminescence efficiency; and an organic luminescent device prepared from the luminescent material has the characteristic of high luminescence efficiency under high current density. The structural formula L1, the structural formula L2 and the structural formula L3 are shown in the specification.

Photostable sunscreen compositions containing at least one cinnamic acid ester UV-B screening agent, at least one dibenzoylmethane compound UV-A screening agent and at least one particular s-triazine compound have improved effectiveness with respect to UV-B radiation, while maintaining the balance in UV-A / UV-B protection during exposure to the sun.

The invention relates to a high SPF sunscreen composition. There exists a need for a personal care composition comprising sunscreen agents in low concentrations that are able to provide much higher SPF as compared to known sunscreen compositions comprising such low levels of sunscreen agents. The present applicants have been working on solving this problem and have surprisingly found that cosmetic compositions comprising dibenzoylmethane or its derivative in combination with an oil soluble UV-B sunscreen when incorporated in a sunscreen composition along with a non-ionic surfactant of a select class meeting certain HLB requirements, provide the enhanced SPF benefits when applied on the substrate of interest.

Topically applicable, improvedly photostabilized, photoprotective cosmetic / dermatological compositions contain (i) an effective UV-screening amount of at least one dibenzoylmethane sunscreen and an effective photostabilizing amount of (ii) at least one bis-resorcinyl triazine compound and (iii) at least one compound accepting the excited triplet level energy of said at least one dibenzoylmethane sunscreen, notably at least one 4-hydroxybenzylidenemalonate compound, 4-hydroxycinnamate compound, fluorene compound, piperidinol salt, or mixture thereof, formulated into (iv) a topically applicable, cosmetically / dermatologically acceptable support therefor.

The invention belongs to the technical field of the cosmetics, and particularly relates to white and bright face cream and a preparation method thereof. The provided white and bright face cream comprises ethylhexyl methoxycinnamate, carboxyl ethylhexyl stearate, PPG-15 stearyl ether, octyl methyl-silicone, isononyl isononanoate, C12-15 alcohol benzoate, hydroxyethylurea, propylene glycol, titanium dioxide, polydimethylsiloxane, glyceryl stearate / PEG-100 stearate, cetostearyl alcohol / cetearyl glucoside, butyl methoxy dibenzoylmethane, tocopheryl acetate, 4-butyl resorcinol, peony whitening essence, an apple seed extract, arbutin, an thyme extract, sodium hydrogen sulfite, polyhydroxystearic acid, triethyl citrate, xanthan gum, EDTA disodium and water and so on. The provided white and bright face cream is natural and safe, is easy to absorb, and has the good permeability and good effects of moisturizing, whitening and nourishing skin.

UV-absorbing polymers are provided that have at least one anhydride repeating unit that is covalently attached to at least one UV-absorbing moiety selected from the group consisting of functionalized dibenzoylmethanes, benzophenone sulfonamides, triphenyl triazines, and combinations thereof. Also provided are formulations comprising the UV-absorbing polymers.

The invention relates to a cream and a preparation method thereof. The cream is prepared from the following raw materials in parts by mass: 4 to 32.5 parts of emollient, 2 to 5 parts of butyl methoxyl dibenzoylmethane, 0.5 to 1 part of 4-[3-(2,4-dimethoxy-3-methylphenyl)propyl]-1,3-benzenediol, 0.005 to 0.01 part of glabridin, 0.3 to 0.7 part of hydroxydecyl ubiquinone, 0.05 to 0.25 part of sodium hyaluronate, 1 to 5 parts of bio-saccharide gum-1, 1 to 5 parts of beta-glucan, 0.5 to 1 part of nicotinamide, 0.5 to 1.5 parts of 3-O-ethyl ascorbic acid ester, 0.1 to 0.3 part of dipotassium glycyrrhizinate, 2 to 5 parts of peony root extract, 0.2 to 0.5 part of thickener, 1.5 to 6.5 parts of emulsifier, and 3 to 6 parts of butanediol. The cream has the advantages that the irritation to skin is smaller, and the better whitening, speckle removal and moisturizing effects are realized.

The present invention relates to a composition comprising: a) a dibenzoylmethane derivative UV-A absorbing agent, b) a hydroxybenzophenone, c) a triazine derivative, and d) a triazole derivative, and the topical use thereof in protecting mammalian skin or hair from UV radiation.

Photostable cosmetic compositions comprising sunscreens, more particularly to cosmetic compositions comprising dibenzoylmethane sunscreens are provided. It is known that dibenzoylmethane and its derivatives are relatively sensitive to ultraviolet radiation and they decompose rapidly under the effect of sunlight. This decomposition is accelerated in the presence of UV-B sunscreens, especially p-methoxycinnamic acid and its derivatives. The present inventors have surprisingly found that cosmetic compositions comprising dibenzoylmethane or its derivative and p-methoxycinnamic acid or its derivative, can be stabilized by incorporating a combination of fatty alcohol ethoxylates and polyalkyleneglycol.

The invention provides a method for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane. According to the method provided by the invention, a quick and efficient extraction method with a high recovery rate is established by using an accelerated solvent extraction technology, then detection is performed by using a high-performance liquid chromatography-mass chromatography, and quantification is performed by using an internal standard method, so that the 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil are effectively analyzed and detected. The average recovery rates of the 2-hydroxyl-4-methoxybenzophenone and the butyl methoxydibenzoylmethane are 95.1-93.3% and 92.7-93.2%, the detection limit is less than 1.0ng / g, the quantification limit is less than 2.0ng / g, and the method is high in recovery rate, high in sensitivity and good in repeatability and can be used for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil.

Photostable, topically applicable cosmetic / dermatological compositions contain at least one dibenzoylmethane compound UV-A sunscreen and at least one merocyanine sulfone compound.

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 invention discloses a light-blind organic ultraviolet detection device based on rare earth complex, and relates to an organic ultraviolet detection device, which belongs to the technical field of a photovoltaic detector. The organic ultraviolet detector comprises a transparent glass substrate (1), a transparent electrode (2), an organic layer (3) and a metal electrode (4). The transparent electrode (2), the organic layer (3) and the metal electrode (4) are sequentially prepared on the transparent glass substrate (1). The organic layer is made of the mixture of 3 dibenzoylmethane 4,7- diphenyl-1,10-phenanthroline europium and [6.6]- phenyl-C61-methyl butyrate, mixture of 3 dibenzoylmethane 4,7- diphenyl-1,10- phenanthroline terbium and [6.6]- phenyl-C61-methyl butyrate or mixture of 3 dibenzoylmethane 1,10-phenanthroline europium and [6.6]- phenyl-C61-methyl butyrate, and the mass proportion of the mixture is 1:2 to 2:1. The preparation process is simple, and the sensitivity of the light-blind organic ultraviolet detection device is high.