106 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.

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, and
  • R² 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:

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.

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 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.

The invention discloses a sunscreen composition containing layered composite metal hydroxide and a preparation method thereof. The composition comprises the following components in parts by weight: 0.5-10 parts of layered composite metal hydroxide, 5-8 parts of ethylhexyl methoxycinnamate, 1-2 parts of butyl methoxyl dibenzoylmethane, 1-3 parts of benzophenone-3 and 0-1 part of bis-ethylhexyloxyphenol methoxyphenyl triazine, wherein the layered composite metal hydroxide material is safe, high in light stability and good in compatibility with other components, and the compatibility with other components in cosmetics is increased; the ethylhexyl methoxycinnamate and the benzophenone-3 absorb ultraviolet rays of a UVB wave band mainly, the butyl methoxyl dibenzoylmethane absorbs ultraviolet rays of a UVA wave band mainly, and the bis-ethylhexyloxyphenol methoxyphenyl triazine is a broad-spectrum UV absorbent; the layered composite metal hydroxide reaches the effect of physical screening through scattering and diffuse reflection of UV light, and realizes synergistic interaction with other organic ultraviolet absorbent with each other, so that the sunscreen range and sunscreen degree can be obviously promoted.