26 results about "Ultraviolet absorbance" patented technology

An aqueous ultraviolet-absorbing resin emulsion, and an aqueous resin emulsion composition containing the emulsion is provided, wherein the emulsion is excellent in compatibility with a synthetic resin and light resistance. Also, the emulsion improves stability in blending with an aqueous emulsion of the synthetic resin, and prevents bleed out of the ultraviolet-absorbing resin on the surface of a coating film. Further, the aqueous ultraviolet-absorbing resin emulsion imparts excellent alkali or solvent resistance to a synthetic resin poor in alkali or solvent resistance. More specifically, an aqueous resin emulsion composition comprising (I) an aqueous ultraviolet-absorbing resin emulsion and (II) an other aqueous resin emulsion is provided, wherein the emulsion (I) is obtained by urethanizing (A) a polyol component having an ultraviolet-absorbing group {e.g., 1,1-bis[3-(2H-benzotriazol-2-yl)-4-hydroxy-benzeneethanol]methane}, (B) a polyol if necessary, (C) an alkyl or aryl dialkanolamine compound, and (D) an organic polyisocyanate in (E) an organic solvent, diluting the reaction mixture with (F) an organic solvent having a boiling point lower than 100° C. to give a resin solution, neutralizing the resin solution with (G) a neutralizing agent, and dispersing the resultant in water.

The application discloses a kind of ultraviolet absorber with triazine ring as main structure and its preparation method and its application in aramid fiber, the ultraviolet absorber has the following structural formula: Wherein, R1, R2, R3, R4 It is the group containing phenyl or substituted phenyl, R5 It is piperidyl, piperazyl, pyrrolidinyl and one of the following structures:This ultraviolet absorber has good absorption to UVA-UVB band ultraviolet, especially in 290~320 nm range has good ultraviolet absorption, adding the ultraviolet absorber in aramid fiber can significantly improve its weather resistance and service life, keep mechanical property, delay ultraviolet degradation, reduce the direct damage of fiber.

This invention discloses a composite transparent film and its preparation method, relating to the technical field of polymer materials. The preparation method of the composite transparent film includes the following steps: (1) melting and blending vermiculite and fluororubber to obtain fluorinated vermiculite; then mixing the fluorinated vermiculite and mica evenly to obtain composite clay; (2) mixing polyvinyl alcohol solution, composite clay, and SESC lignin evenly to obtain a precursor solution, wherein the mass ratio of polyvinyl alcohol, composite clay, and SESC lignin is 45:45:(8-12); then spreading and drying the precursor solution on a substrate by casting, followed by heat treatment to obtain the composite transparent film. The composite transparent film of this invention possesses excellent water vapor barrier properties, ultraviolet absorption capacity, good transparency, high mechanical strength, and weather resistance.

This application provides a method for preparing gallium oxide (GaO) with enhanced ultraviolet absorbance and a GaO material prepared according to this method. First, a GaO thin film capable of generating ultraviolet absorption is grown on a substrate by magnetron sputtering. The GaO thin film is then annealed. Next, a copper thin film is grown on the GaO thin film by magnetron sputtering, followed by rapid annealing, causing the copper film to crack into copper nanoparticles under heat. This preparation method utilizes copper nanoparticles to enhance the ultraviolet absorption performance of GaO. The process steps are simple and easy to operate, thus effectively reducing the preparation cost. Furthermore, the GaO material prepared by this method shows a significant improvement in ultraviolet absorbance.

Compositions Containing a UV Absorbing System Including a UV Attenuating Physical Material and an Oil to Inhibit Aggregation of the UV Attenuating Physical Material. This disclosure relates to compositions including a UV absorbing system comprising at least one ultraviolet (UV) attenuating physical material and at least one oil to inhibit the aggregation of the ultraviolet (UV) attenuating physical material, as well as processes for preparing and using such compositions. Figure for abstract: none

Compositions Containing a UV Absorbing System Including a UV Attenuating Physical Material and a Coloring Agent: This disclosure relates to compositions including a UV absorbing system comprising at least one ultraviolet (UV) attenuating physical material and at least one coloring agent, as well as processes for manufacturing and using such compositions. Figure for abstract: None

This invention relates to the field of polymer material additives technology, and discloses a reactive ultraviolet composite stabilizer and its application in TPEE. The aim is to solve the problem that traditional physical blending light stabilizers are prone to migration and volatilization, leading to insufficient long-term weather resistance of polymers. This invention designs and synthesizes a composite stabilizer with primary hydroxyl groups retained at both ends of the molecule, using dibromoneopentyl glycol as the backbone and connecting its two ends of bromine atoms to hindered amine derivatives containing hydroxyl groups and triazine ultraviolet-absorbing derivatives via ether bonds. This stabilizer can be used as a comonomer, achieving permanent bonding and fixation during the polycondensation process of TPEE through the chemical embedding of its two primary hydroxyl groups into the polymer backbone. This allows it to exert non-migrating properties and the synergistic effect of the intramolecular hindered amine and ultraviolet-absorbing groups, thereby improving the anti-ultraviolet aging performance and long-term stability of TPEE products.

The present application provides an oily cosmetic composition that can obtain a moisturizing effect while further improving the ultraviolet absorption effect. An oily cosmetic composition comprising a polyalkylene glycol, an ultraviolet absorber, and an oil component other than the ultraviolet absorber, the content of the polyalkylene glycol being 5.0% by mass or more, the oil component comprising a silicone oil, the content of the silicone oil being 60% by mass or more relative to 100% by mass of the total of the ultraviolet absorber and the oil component, and the content of water being 1.0% by mass or less.

EMULSION COMPOSITIONS CONTAINING A UV-ABSORBING SYSTEM INCLUDING A UV-ATTENUATING PHYSICAL MATERIAL AND A PARTICLE MATERIAL This disclosure relates to emulsion compositions comprising a UV-absorbing system (component) including at least one ultraviolet (UV) attenuating physical material and a particulate portion (component) including at least one substantially spherical particulate material and at least one amorphous particulate material, as well as processes for manufacturing and using such compositions. Figure for abstract: none

The application discloses a kind of quantum dot-silicone composite modified water-based self-cleaning coating and preparation method thereof, comprising, the water-based self-cleaning coating is obtained after coating and curing by quantum dot-silicone composite modified water-based hydroxyl acrylic dispersion and crosslinking agent.The quantum dot-silicone composite modified water-based hydroxyl acrylic dispersion in it includes amino-silica encapsulated zinc oxide quantum dot dispersion liquid and long-chain silicone grafted water-based hydroxyl acrylic resin, so that quantum dot material with size extremely small and ultraviolet absorption characteristics is stably dispersed in aqueous solution, and it is used as the dispersion liquid of long-chain silicone grafted water-based hydroxyl acrylic resin, further organically combines the low surface energy, flexible rotation and liquid-like characteristics of silicone segment with the advantage of quantum dot, and finally through the crosslinking curing reaction of coating, obtains environmental protection water-based coating with transparency, self-cleaning, ultraviolet shielding.

This invention discloses a high weather-resistant waterborne polymer emulsion and its preparation method, relating to the field of waterborne polymer emulsion technology. The high weather-resistant waterborne polymer emulsion prepared by this invention is composed of polytetrahydrofuran ether diol, silane-acrylate bifunctionalized polymer, isophorone diisocyanate, methyl methacrylate, butyl acrylate, a polymerizable composite emulsifier, a copolymerizable ultraviolet-absorbing polymer, and additives. The high weather-resistant waterborne polymer emulsion prepared by this invention, after film formation, exhibits strong weather resistance, good water resistance, high adhesion, and non-migration of ultraviolet absorbers, making it suitable for outdoor high-performance protective coating applications.

The present application relates to a radiation curable adhesive composition for optical films containing a vinylmethyl oxazolidinone. The radiation curable adhesive composition for optical films is excellent in adhesion even in the case of bonding to optical films having ultraviolet absorption ability.

The application provides a cement-based aerogel material with intrinsic anti-aging ability and stable optical performance and a preparation method thereof, anti-aging functional groups are chemically bonded to the cement-based aerogel network through in-situ copolymerization, the pore structure and optical performance are optimized, and the synergistic improvement of anti-aging performance and optical stability is realized. The raw materials of the cement-based aerogel material include a matrix material and a functional monomer, the matrix material is composed of silicate cement and silica sol, wherein the cement accounts for 50-70wt%, and the silica sol accounts for 30-50wt%; the functional monomer includes ultraviolet absorbing monomer A, antioxidant monomer B and hydrophobic monomer C, and the total amount of the functional monomer ranges from 1wt% to 8wt%. The cement-based aerogel material obtained in the application has excellent physical performance (such as optical performance), greatly promotes the important application value and application potential of the material in the fields of optoelectronic devices, gas-sensitive sensors, space high-speed particle capture and electrochemical energy storage devices, thermal insulation and the like.

Compositions Containing a UV Absorbing System Including a UV Attenuating Physical Material and a Flavone. This disclosure relates to compositions comprising a UV absorbing system including at least one ultraviolet (UV) attenuating physical material and at least one flavone, as well as methods for manufacturing and using such compositions. Figure for abstract: none

Compositions Containing a UV Absorbing System Including a UV Attenuating Physical Material and an Oil to Inhibit Aggregation of the UV Attenuating Physical Material. This disclosure relates to compositions including a UV absorbing system comprising at least one ultraviolet (UV) attenuating physical material and at least one oil to inhibit the aggregation of the ultraviolet (UV) attenuating physical material, as well as processes for manufacturing and using such compositions. Figure for abstract: none

Provided is an adhesive sheet that has sufficient impact resistance and transparency and excellent ultraviolet absorbency up to the vicinity of the visible light region (for example, wavelength 405 nm). An adhesive sheet comprising a resin component (A) having a structural unit derived from a (meth)acrylate-based monomer and an ultraviolet absorber (B), and satisfying the following requirements [I] and [II]. [I] The aforementioned ultraviolet absorber (B) comprises an ultraviolet absorber (B-1) having an absorption maximum at a wavelength of 300 to 360 nm and an ultraviolet absorber (B-2) other than the aforementioned (B-1) having an absorption maximum at a wavelength of 350 to 420 nm. [II] The content ratio of the ultraviolet absorber (B-1) to the ultraviolet absorber (B-2) contained in the aforementioned adhesive sheet is 30:70 to 70:30 by mass ratio.

The application relates to the technical field of water treatment control, and discloses an intelligent control method and system for a swimming pool water flocculant preparation process, which comprises the following steps: synchronously acquiring real-time conductivity of a preparation tank, real-time flow of backwater, ultraviolet absorbance and water turbidity; performing time sequence difference operation on the real-time conductivity to obtain a dissolution completion degree index, terminating stirring when the index meets a threshold value, and calculating an efficiency attenuation coefficient; establishing a first-in-first-out data mapping queue, binding the efficiency attenuation coefficient with a liquid level interval of a dosing tank, and calling the dosing tank according to a consumed volume when extracting a medicament; obtaining an organic load factor through flow and absorbance, performing feedforward control operation in combination with the called efficiency coefficient, performing feedback control operation in combination with turbidity deviation, adding the two to generate a final instruction, and controlling a variable frequency metering pump. The application realizes closed-loop determination of medicament preparation and spatial tracking of batch efficiency, overcomes hydraulic lag of traditional control, and improves anti-interference capability.

This invention provides a fluorescence detection device, comprising: a sample tube support and a fluorescence detection structure. The sample tube support is capable of supporting multiple linearly arranged sample tubes to be tested. The fluorescence detection structure includes at least one set for quantitative fluorescence detection of the substance to be tested in the sample tubes. Compared with the prior art, this invention has the following advantages: by setting up a fluorescence detection structure, detection is performed based on the principle of fluorescence excitation within the substance, avoiding the influence of interfering substances contained in the substance in the traditional ultraviolet absorbance method, resulting in more accurate detection results and higher detection sensitivity, thus filling the gaps in the ultraviolet absorbance method.

The degradation inhibitor of the ultraviolet absorber disclosed herein comprises a plant extract belonging to the genus *Orthosiphon stamineus* of the Lamiaceae family, which can inhibit the decrease in ultraviolet absorption caused by exposure to ultraviolet light. The ultraviolet absorber is preferably 2-[4-(diethylamino)-2-hydroxybenzoyl]hexyl benzoate. The plant belonging to the genus *Orthosiphon* of the Lamiaceae family is preferably *Orthosiphon stamineus* Bent.

This invention discloses a method for preparing a graphene-modified ultra-weather-resistant nano-coating system and its application, belonging to the field of coating materials technology. The method includes: preparing bifunctionalized modified graphene grafted with both ultraviolet absorbing groups and free radical scavenging groups; preparing a primer component and a modified epoxy resin topcoat component using the bifunctionalized modified graphene as a functional filler; sequentially coating the primer component and topcoat component onto the surface of a substrate, and curing to form a primer layer and a topcoat layer, thus obtaining the coating system. This invention, by synergistically grafting ultraviolet absorbing groups and free radical scavenging groups onto the surface of nano-graphene and combining the gradient functional design of the primer and topcoat, enables the coating system to possess excellent adhesion, barrier performance, and ultra-weather resistance, and can be widely used for corrosion and aging prevention of outdoor steel structures, bridges, photovoltaic supports, or marine engineering equipment.

This invention discloses a method and apparatus for preparing microcapsules with ultraviolet shielding function, comprising a synthesis step of a material with ultraviolet shielding function. In the synthesis of SiO2-coated TiO2 nanoparticles, TiO2 nanoparticles are dispersed in a mixed solution of ethanol, deionized water, and ammonia water, mechanically stirred and ultrasonically treated in a processing apparatus, and tetraethoxysilane dissolved in ethanol is added to the mixture. This invention ensures the long-term stability and durability of microcapsules by using a material with good durability and chemical stability as the microcapsule shell material, and improves the ultraviolet shielding effect and stability of microcapsules by adding a reinforcing agent with higher ultraviolet absorption capacity and photostability to the shell material, thereby extending the service life of the microcapsules and protecting the target substance from ultraviolet radiation for a longer period. By improving the preparation process of the microcapsule shell material, a more uniform ultraviolet shielding effect is achieved, ensuring a similar protective effect for each microcapsule and improving the overall ultraviolet shielding performance.

This invention provides an oil-in-water emulsified cosmetic composition that can simultaneously achieve moisturizing effects and further enhance ultraviolet absorption. The oil-in-water emulsified cosmetic composition contains a polyalkylene glycol in its aqueous phase at a content of 10% by mass or more, and an ultraviolet absorber in its oil phase.

The present invention relates to an adhesive layer-equipped polarizing film and an image display device. The present invention aims to provide an adhesive layer-equipped polarizing film that can solve the problem of reduced yield and that can impart sufficient ultraviolet blocking function even when the polarizing film is thin. In addition, the present invention also aims to provide an image display device that uses the adhesive layer-equipped polarizing film. An adhesive layer-equipped polarizing film that is used in an image display device at a position closer to the visually recognizing side than the image display portion, characterized by having a polarizing film and adhesive layers on both sides of the polarizing film, the polarizing film having a polarizer and transparent protective films on both sides of the polarizer, the transparent protective film on the visually recognizing side of the polarizer having a transmittance of 6% or more at a wavelength of 380 nm, and the adhesive layer on the visually recognizing side of the polarizing film having ultraviolet absorbing function.

This invention relates to the field of cable technology and discloses a composite insulated weather-resistant wire. The composite insulated weather-resistant wire of this invention is composed of a conductor core, a first insulation layer, a heat dissipation buffer layer, a second insulation layer, and a polyvinyl chloride (PVC) sheath material. The PVC sheath material includes 100 parts by weight of PVC, 35-50 parts by weight of plasticizer, 3-12 parts by weight of cyanolignin, and 5-20 parts by weight of filler, etc. The cyanolignin contains a large number of phenolic hydroxyl groups, which can capture oxygen free radicals, hydroxyl free radicals, etc. generated by the photo-oxidation free radical chain reaction, thereby terminating the photo-oxidation process and exhibiting excellent UV resistance. At the same time, the lignin introduces cyano groups, which can absorb ultraviolet light energy, transition from the ground state to the excited state, and return to the ground state, releasing energy. It also has excellent ultraviolet absorption performance. Under the synergistic effect, the UV aging resistance of PVC is significantly improved.

An optical laminate having a positive A layer and an alignment layer / ultraviolet absorbing layer directly connected to the positive A layer, wherein the optical laminate has a transmittance of 1.0% or less at a wavelength of 380 nm and a transmittance of 20.0% or less at a wavelength of 400 nm, and the alignment layer / ultraviolet absorbing layer contains a region in which a liquid crystalline component contained in the positive A layer is penetrated at an interface on the positive A layer side.