110 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 invention relates to the technical field of sewage treatment, in particular to a dynamic control method applied to a culture tail water circulation treatment system. The method comprises the following steps: continuously detecting aquaculture tail water on a water inlet pipeline, calculating the ratio of chemical oxygen demand to five-day biochemical oxygen demand as a first degradation index, and calculating the ratio of ultraviolet absorbance to total organic carbon concentration as a second degradation index; according to the first degradation index and the second degradation index, identifying aging complementary and range complementary organic load degradation characteristics, and determining a process treatment path based on the organic load degradation characteristics; performing primary pretreatment on the aquaculture tail water in different process treatment paths to obtain intermediate water quality data; detecting the ammonia nitrogen concentration of the intermediate water quality data, and extracting the time change rate of the ammonia nitrogen concentration as an ammonia nitrogen conversion parameter. According to the invention, the oxygen utilization efficiency and the removal rate of organic matters and nitrogen are improved through regional dissolved oxygen and function configuration optimization.

The invention belongs to the technical field of preparation and surface protection of polyurethane coatings, and particularly relates to weather-resistant polyurethane and a preparation method thereof. The coating provided by the invention is composed of a component A and a component B according to a weight ratio of 1: (0.2-0.4). The component A is prepared from water-based fluorine-containing hydroxy acrylic dispersion resin with a high hydroxyl value, GMA (glycidyl methacrylate) grafted modified water-based acrylic dispersion resin, a benzotriazole ultraviolet light absorber, a light hindered amine stabilizer, rutile titanium dioxide, wet sericite powder, nano zinc oxide and auxiliaries; and the component B comprises an aliphatic isocyanate curing agent and propylene glycol diacetate. By constructing a quadruple synergistic weather-resistant mechanism of ultraviolet absorption, free radical capture, physical shielding and structural densification, the weather resistance and corrosion resistance of the coating are remarkably improved while the coating keeps excellent adhesive force (0-1 level) and hardness (2H-3H), the color change delta E is smaller than or equal to 1.8 after artificial accelerated aging for 1000 hours, the gloss loss rate is smaller than or equal to 23%, and the weather resistance and corrosion resistance of the coating are greatly improved. And the corrosion spreading width of a 600-hour salt spray test lineation is less than or equal to 2.3 mm.

The invention relates to the technical field of water treatment, and discloses a central air-conditioning condensate water disinfection and purification device which comprises a treatment tank main body, an ozone generator and an ozone generator real-time regulation and control system. According to the system, a demand coefficient is dynamically obtained based on residual ozone concentration and ultraviolet absorbance through a pollution load evaluation module; the ozone mass transfer efficiency evaluation module calculates a mass transfer efficiency coefficient based on the tail gas and inlet gas ozone concentration and the gas flow; the matching evaluation module combines the demand coefficient, the mass transfer efficiency coefficient and the water temperature influence factor to generate a matching factor; the generator health monitoring module evaluates a health degree coefficient based on parameters such as air inlet pressure; and the power comprehensive decision-making module fuses the health degree coefficient and the matching factor, and outputs a target power set value through a multi-parameter regulation and control model. The intelligent sensing and dynamic optimization of ozone feeding are realized, the problems of traditional control stiffness, low mass transfer efficiency and insufficient equipment guarantee are solved, and the energy utilization rate and the operation reliability are improved while the disinfection effect is ensured.

The present application relates to thermal insulation coating technical field, specifically to a kind of low VOCs ultraviolet resistant thermal insulation coating composition and its performance testing device, consisting of the following mass parts components: water-based acrylic resin 30-45 parts, nitrogen-doped graphene 1-3 parts, nano composite powder 2-5 parts, low water absorption and expansion glass microsphere 8-12 parts, silane coupling agent modified sepiolite 5-10 parts, silane coupling agent KH560 0.5-1.5 parts, ultraviolet absorber UV-9 0.3-0.8 parts, hydroxyethyl cellulose thickening agent 0.2-0.5 parts;Composition meets the following conditions: (1) VOCs content≤50g / L;(2) ultraviolet absorption rate≥95%;The present application realizes the purpose that VOCs content is far lower than traditional solvent type coating through the synergistic effect of water-based acrylic resin system and low water absorption and expansion glass microsphere, while nitrogen-doped graphene and nano ITO-SiO2 Composite powder form ultraviolet-infrared dual-effect shielding layer, ultraviolet absorption rate, infrared reflectivity greatly improve, solve the problem that traditional anti-UV coating function is single, VOCs is overproof.

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.

A component processing method is provided that can prevent damage to the workpiece (component, etc.) even when a rigid substrate is peeled off from the workpiece. The component processing method of the present invention includes: a lamination step in which a rigid substrate, an ultraviolet absorbing layer, and a workpiece are sequentially laminated; a processing step in which the workpiece is processed; and a peeling step in which the ultraviolet absorbing layer is irradiated with ultraviolet light to peel the rigid substrate off from the workpiece.

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.

The application relates to the technical field of ultraviolet absorbing materials, and discloses a preparation method of a composite ultraviolet absorbing agent, which comprises the following components in percentage by weight: 50-70% of an ultraviolet absorbing agent, 10-20% of a light stabilizer, 5-15% of an antioxidant, 2-5% of a dynamic crosslinking agent, and 0.5-2% of an auxiliary additive. The preparation method comprises the following steps: dissolving the ultraviolet absorbing agent, the light stabilizer and the antioxidant in a mixed solvent to stir and form a uniform solution, adding the dynamic crosslinking agent to perform crosslinking reaction, then removing the solvent by vacuum evaporation, and grinding and drying to obtain the target product. The composite ultraviolet absorbing agent is prepared through the synergistic effect of the components and the construction of a dynamic crosslinking network, the ultraviolet absorbing performance, the chemical stability, the thermal stability and the low migration property are remarkably improved, and the composite ultraviolet absorbing agent can be widely applied in the fields of plastics, coatings, textiles and the like.

The invention relates to a preparation method of a high-performance ink material for a writing pen, and belongs to the technical field of ink materials. The high-performance ink material for the writing pen is obtained by self-making the modifier and blending the modifier with the pigment and other auxiliaries, and the modifier connects the benzotriazole with the hydroxypyridine, so that a conjugated system is expanded, the ultraviolet absorption strength of the modifier is higher, the efficiency is higher, and the ink material is more suitable for the writing pen. Ether introduced by pyridine can be used as a hydrogen bond acceptor to form a hydrogen bond with resin in an ink system, so that the ultraviolet light absorber is prevented from being separated out; quaternary ammonium salt cations in the modifier can improve the adhesive force and color fastness of the ink and the friction resistance and water resistance after writing; meanwhile, tert-butyl in the modifier reduces surface tension through steric hindrance, promotes leveling of ink and ink mark uniformity and enhances dispersion stability among resin, auxiliaries and pigment, so that the ink is not prone to layering and deterioration after being placed for a long time.

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.

The invention discloses a colorimetric detection method for cMyBP-C protein based on nano-enzyme activity, preparation of a bismuth selenide / nano-gold composite material and application of the bismuth selenide / nano-gold composite material in protein detection. The method comprises the following steps: performing ultrasonic stripping on a bismuth selenide block to obtain a few-layer bismuth selenide dispersion liquid; and then sequentially adding a sodium borohydride aqueous solution and a chloroauric acid aqueous solution under a stirring condition, and carrying out in-situ reduction to form gold nanoparticles loaded on the surface of bismuth selenide. The composite material has the capability of catalyzing reduction of p-nitrophenol into p-aminophenol, and the color of the solution is changed from yellow to colorless. After the cMyBP-C antibody is modified on the surface of the composite material, the catalytic activity is inhibited; after a to-be-detected sample is added, the antibody and the protein are specifically combined to cause dissociation, and the catalytic activity is recovered. The cMyBP-C protein is quantitatively detected by observing the color change of the solution or monitoring the reduction of the ultraviolet absorbance at 400 nm.

The present application relates to the technical field of paint, and discloses a preparation method of a spherical alumina-cordierite composite refractory paint composition, wherein 100 parts by weight of epoxy resin, 1-5 parts by weight of an amino-terminated polymer ultraviolet absorber, 15-28 parts by weight of a filler spherical alumina trihydrate and cordierite, 29-32 parts by weight of a curing agent and the like are stirred and uniformly mixed to obtain the spherical alumina-cordierite composite refractory paint composition.The polymer ultraviolet absorber contains an ortho-hydroxybenzotriazole group, which can improve the ultraviolet absorption characteristics and ultraviolet aging resistance of the paint.The polymer, as an absorber, contains a biphenyl structure with thermal stability, which is beneficial to improving the thermal decomposition temperature, heat resistance and water resistance after being co-cured with the epoxy resin.The addition of the spherical alumina trihydrate and cordierite improves the limiting oxygen index of the paint coating and improves the flame-retardant fire resistance.

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

A thermoplastic molding composition P comprising: AB: at least one graft copolymer composition AB, consisting of at least one thermoplastic copolymer A and at least one graft copolymer B; C: at least one UV absorber as component C; and D: optionally at least one further additive as component D, wherein the UV absorber component C comprises at least one organic or inorganic component having an UV absorption at least in a wavelength range ≤380 nm; and wherein the UV absorber component C is at least partially selected from at least one black pigment, at least one white pigment and / or at least one dye having an UV absorption at least in a wavelength range ≤380 nm.

The present disclosure relates to compositions including a UV absorbing system including at least one physical ultraviolet (UV)-attenuating material, at least two polyols, and at least one anionic polysaccharide thickening agent, as well as to methods of making and using such compositions.

The application provides a skin care composition containing siloxane treated cerium oxide and a preparation method thereof, and belongs to the technical field of cosmetics. The skin care composition comprises the following components: 5-15% of siloxane treated cerium oxide, 0.5-1.5% of sodium chloride or magnesium sulfate, 10-20% of a humectant, 0.1-1.5% of an antioxidant, 0.5-2% of a thickening agent, 0.001-4% of a skin conditioning agent, 2-6% of an emulsifier, 10-35% of an emollient, 0.05-0.25% of a fragrance, 0-10% of a filler, and water in a residual amount. The application adds the siloxane treated cerium oxide in the skin care composition, compared with traditional physical sunscreen agents, and overcomes the disadvantages of pale color and low ultraviolet absorption efficiency. Secondly, through the design of a multiple emulsification system formula, the purpose of high content of the siloxane treated cerium oxide is achieved, and the characteristics of moisturizing, lightness and non-stickiness are achieved.

The present invention provides a cellulose acylate film containing a specific ultraviolet light absorber, a polarizing film using the cellulose acylate film, and a liquid crystal display device, the cellulose acylate film contains more than two ultraviolet light absorbers, at least one of the ultraviolet light absorbers is required to satisfy the following conditions: the absorption capability is mainly concentrated in a 315-400 nm wave band, and the absorption capability of the other one of the ultraviolet light absorbers is not concentrated in a 315-400 nm wave band, and the absorption capability of the other one of the ultraviolet light absorbers is not concentrated in a 315-400 nm wave band. The absorptive amount of the wave band needs to account for 75% or above of the total absorptive amount of the wave band within 250-600 nm, and the wave band has excellent durability such as weather resistance and heat resistance and can block ultraviolet rays with long waves of 380 nm or below. The prepared cellulose acylate film is excellent in spectral absorption performance, little in coloring, excellent in transparency and sufficient in ultraviolet absorption capacity, even if the cellulose acylate film is exposed to high-temperature and high-humidity conditions for a long time, ultraviolet rays can be effectively blocked, and the cellulose acylate film meets the increasing market requirement for use in severe environments.

To provide a layered double hydroxide with a novel function in addition to an adsorption function of a volatile sulfur compound.SOLUTION: A copper-containing layered double hydroxide represented by a formula (1) below is provided. The copper-containing layered double hydroxide is obtained by reacting an aqueous solution containing copper with an aqueous solution containing aluminum under conditions where the pH is 8 or higher. Cu1-xAlx(OH)2An-x / n mH2O (1) (in the formula (1), An- is an n-valent anion, x is a number satisfying 0<x<1, n is a number satisfying 1≤n, and m is a number satisfying 0<m).SELECTED DRAWING: None

The invention discloses a multifunctional sunroof protective film. The sunroof protective film is composed of a base material layer, an ultraviolet absorption layer, a heat insulation layer and an anti-impact layer, the base material layer serves as a supporting structure and is located on the bottommost layer, the ultraviolet absorption layer and the heat insulation layer are sequentially stacked on the base material layer, and the anti-impact layer is arranged on the outermost layer. All the layers are firmly combined through a macromolecular adhesive to form an integral composite structure. The invention further discloses a preparation method of the multifunctional skylight protective film. The sunroof film solves the problems that an existing sunroof film is weak in ultraviolet-proof capacity and lacks an anti-impact protection function.

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

The invention discloses a coating weather resistance prediction method based on a multi-task supervised neural network. The method comprises the following steps: acquiring a mass ratio and a coating thickness of a three-primary-color pigment to an acrylic acid substrate of a target coating; constructing and training a first neural network for predicting the sunlight reflectivity of the coating, inputting the mass ratio, and outputting the sunlight reflectivity of the target coating; constructing and training a second neural network for predicting the weather resistance of the coating on the basis of a multi-task supervised neural network, inputting the sunlight reflectivity and the coating thickness of the target coating, and outputting the ultraviolet absorption amount and the surface temperature variation of the target coating as intermediate parameters, and outputting the weather resistance comprehensive index as a target coating weather resistance prediction result. According to the method, the intelligent neural network model is constructed, so that rapid prediction of the weather resistance of the coating is realized, the dependence on a traditional laboratory test is remarkably reduced, and the research and development cycle and the cost investment are reduced.

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.

The present invention provides an adhesive composition that can prevent degradation due to ultraviolet light due to its excellent absorption capacity against ultraviolet light, and also has excellent folding properties due to its low elastic modulus and high adhesive strength at low temperatures. The present invention also provides an adhesive sheet and a display. [Solution] An adhesive composition comprising an acrylic copolymer, a crosslinking agent, an additive, and an ultraviolet absorber, wherein the ultraviolet absorber comprises one or more compounds selected from the group consisting of compounds represented by the following chemical formulas, etc. JPEG2026057520000017.jpg64170

A display device includes a display panel including a first surface and a second surface opposite to the first surface, a polarizing member disposed on the first surface of the display panel, a window member disposed on the polarizing member, and a first adhesive member disposed between the window member and the polarizing member and including an ultraviolet light absorber. A side surface of the display panel, a side surface of the polarizing member, and a side surface of the first adhesive member have a first surface roughness, an upper surface of the first adhesive member has a second surface roughness less than the first surface roughness, and the side surface of the display panel, the side surface of the polarizing member, and the side surface of the first adhesive member are aligned at a boundary.

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.

The utility model relates to the technical field of sunglass polaroid testing, in particular to a sunglass polaroid ultraviolet absorptivity testing device which comprises a base, an ultraviolet intensity detection sensor is fixedly connected to the top of the base, and electric push rods are fixedly connected to the two sides of the top of the base. Clamping frames are fixedly connected to the output ends of the opposite sides of the two electric push rods, a control mechanism is fixedly connected to the rear side of the top of the base, and a control frame is fixedly connected to the top of the control mechanism. The control mechanism is matched with the control frame to push the adjusting rod, the fixing frame is controlled by the adjusting rod and the mounting plate to move, the fixing frame is matched with the rollers to enable the integrated light source translation mechanism to slide on the surface of the arc-shaped track, and the integrated light source translation mechanism is adjusted to different use angles. The method and the device are used for simulating irradiation of the polaroid at different angles in a real scene and improving the accuracy of test data of the sunglasses polaroid.