963results about How to "Improve light resistance" patented technology

Light- and/or UV-radiation protective coatings for drug delivery devices, such as, for instance, drug eluting vascular stents, where the drugs being delivered via the stents are light sensitive. A method of fabricating a medical article, such as a drug eluting vascular stent, that includes the light- and/or UV-radiation protective coating.

An organopolysiloxane composition which cures to a resinous solid has high strength, transparency, and resistance to thermal- and photo-degradation, and is especially suited for encapsulating LEDs. The composition contains specific addition curable organopolysiloxanes having D, T, and Q units, and a proportion of silicon-bonded aromatic groups.

The surface of a phosphor is coated with a coating member made of a material different from the phosphor in chemical vapor-phase reaction. The coating member is made of any of metal oxide, metal nitride and metal oxynitride. The coating member coats the surface of the phosphor whereby having a substantially smooth film, or is formed such that a large number of fine particles relatively smaller than the phosphor aggregate to coat the whole surface of the phosphor. The coating member contains at least one metallic element selected from the group consisting of Al, Si, and rare earth elements. In addition, the phosphor is a transparent water-soluble phosphor and is an alkaline-earth silicon-nitride phosphor, an alkaline-earth silicon oxynitride phosphor, or the like. The BET value of the coated phosphor is 1.0 to 10 times the BET value before coating. The average thickness of the coating is 10 nm to 500 nm.

To provide novel semiconductor light-emitting device member superior in transparency, light resistance, and heat resistance and capable of sealing semiconductor light-emitting device and holding phosphor without generating cracks or peelings even after use for a long time, the member meets the following requirements: (1) comprising functional group forming hydrogen bond with hydroxyl group or oxygen in a metalloxane bond, on the surface of ceramic or metal, (2) maintenance rate of transmittance at 400 nm wavelength before and after left at 200° C. for 500 hours is between 80% to 110%, (3) no change is observed by visual inspection after irradiated with light having 380 nm to 500 nm wavelength, whose center wavelength is between 400 nm and 450 nm both inclusive, for 24 hours with 4500 W/m² illumination intensity at 436 nm wavelength, and (4) refractive index at 550 nm wavelength is 1.45 or larger.

The invention includes an UV absorbing complex polyol polyester polymer that is the product of a reaction scheme that includes: (i) the esterification of a polyol and a dianhydride, wherein the esterification is carried out under conditions that facilitate substantially only anhydride opening, to form a polyester polymer comprising at least two pendant carboxylic groups, and at least two hydroxyl groups; and (ii) the reaction of at least one pendant carboxylic group and at least one terminal hydroxyl group of the polyester polymer with an epoxide having a functional group, wherein the epoxide comprises an UV absorbing moiety.

Also included are linear UV absorbing complex polyol polyester polymers represented by Formula (XI):

wherein R³ is independently selected from an UV absorbing moiety; R⁴ and R⁵ are each independently selected from a hydrocarbon group, and n is an integer of 1 to 1000.

A crosslinked UV absorbing complex polyol polyester polymer that is reaction product of a random copolyesterification esterification reaction and/or the esterification product of: a monofunctional carboxylic acid and/or ester that comprises an UV absorbing moiety, at least one of a diol, a polyol, a diacid and/or an ester is also included within the scope of the invention. The resulting polymer has an UV absorbing functionality of greater than 2.0.

Provided is a resin composition for sealing LED elements, including (i) an organopolysiloxane with a polystyrene equivalent weight average molecular weight of at least 5×10³, represented by an average composition formula (1): R¹_a(OX)_bSiO_(4-a-b)/2, in which, each R¹ represents, independently, an alkyl group, alkenyl group or aryl group of 1 to 6 carbon atoms, each X represents, independently, a hydrogen atom, or an alkyl group, alkenyl group, alkoxyalkyl group or acyl group of 1 to 6 carbon atoms, a represents a number within a range from 1.05 to 1.5, b represents a number that satisfies 0<b<2, and 1.05<a+b<2), and (ii) a condensation catalyst. Also provided are a cured product produced by curing the composition and a process for sealing LED elements with the cured product. The composition exhibits excellent thermal resistance, ultraviolet light resistance, optical transparency, toughness and adhesion.

The present invention provides an ink set which includes a combination of a recording liquid including a resin-coated colorant, and a treatment liquid including a particle which has a reactivity with the resin-coated colorant. The ink set can obtain a high quality image free from feathering and color bleeding, can obtain a high quality image even when used for printing on a plain paper sheet, can obtain a print excellent in wear resistance, can obtain a high image density without causing a deep permeation of a recording liquid in the paper sheet, can perform a favorable double-sided printing with a low image density when the image is viewed from an opposite face of an image print face, can be free from an image stain attributable to drying failure of the recording liquid, and can provide the print with a proper glossiness.

A polarizing element includes a transparent substrate, a reflective layer constituting, on the transparent substrate, grid-shaped convexities arrayed at a pitch smaller than a wavelength in a used optical bandwidth, a dielectric layer formed on the reflective layer, a diffusion barrier layer formed on the dielectric layer, and an absorbing layer formed on the diffusion barrier layer such that the diffusion barrier layer is sandwiched between the absorbing layer and the dielectric layer. This polarizing element has an excellent optical property and is able to prevent mixing of the absorbing layer and the dielectric layer under a high temperature.

Compounds of Formula I:

• • wherein
  • R, R₁ and R₂ are each independently hydrogen or linear or branched C₁ to C₁₀ alkyl, or linear or branched C₁ to C₁₀ alkoxy;
  • R₃ is selected from the group consisting of COCH₃, CO₂R₇, CONH₂, CON(R₈)₂, CN, COX(CH₂)n-N—(R₄)(R₅)(R₆), and the quaternized salt form of the formula COX(CH₂)n-N—(R₄)(R₅)(R₆)⁺Y⁻;
  • X is O or NH;
  • n is an integer of 1 to 5;
  • Y is an anion;
  • R₄, R₅ and R₆ are independently linear or branched C₁ to C₃₀ alkyl; and
  • R₇ and R₈ are independently hydrogen or linear or branched C₁-C₃₀ alkyl.

Sunscreen formulations containing compounds of Formula I, and methods for protecting hair, skin and substrates such as polymers, textiles, fabrics, leathers and paints using the compounds herein.

A probe for sensing and imaging intracellular oxygen comprises an oxygen-sensitive fluorescent or phosphorescent dye combined with a hydrophilic macromolecular carrier and a cell loading agent. A method for sensing cellular oxygen using the probe is also described.

A single step milling and surface coating process allows for production of a stable dispersion of surface coated nanoparticles in an efficient manner. The process comprises providing feed particles, providing a coating agent, and generating the stable dispersion of surface coated nanoparticles by milling the feed particles in an aqueous medium containing the coating agent such that the coating agent bonds to surfaces of the feed particles as the feed particles are milled to an average particle size of less than about 100 nm.

An object of the present invention is to obtain an organic EL device having excellent light resistance and a method for manufacturing the same. An organic EL device comprises: a first substrate as a supporting substrate; a first electrode provided on the first substrate; an organic layer that is provided on the first electrode and includes at least an organic light-emitting layer; a second electrode provided on the organic layer; a resin layer provided to cover the first substrate and the second electrode thereon, the resin layer containing, at least in a region on the organic layer, an ultraviolet light absorber that absorbs ultraviolet light; and a second substrate arranged on the resin layer to block the organic layer from ambient air.

The invention discloses a modified epoxy resin anticorrosive paint which is prepared from the following raw materials in parts by weight: 40-55 parts of a modified epoxy resin, 3-10 parts of a polystyrene rubber, 5-18 parts of mica powder, 6-15 parts of quartz powder, 3-12 parts of nano-sized iron oxide, 3-10 parts of zinc powder, 5-16 parts of ceramic micro powder, 2-6 parts of molybdenum disulfide, 2-5 parts of polytetrafluoroethylene, 3-5.8 parts of an aminosilane coupling agent, 3-5 parts of a coalescing agent, 3-7 parts of a reactive diluent, 0.3-0.7 part of a defoaming agent, 0.3-0.6 part of leveling agent, 20-35 parts of deionized water and 0.6-1.5 part of a curing agent. The modified epoxy resin anticorrosive paint provided by the invention is strong in force of adhering to base materials, good in anticorrosive performance, high in impact strength and excellent in weather fastness.

The invention discloses a production method of high-light-fastness rutile type titanium dioxide, which comprises the following steps such as preparing slurry containing rough titanium dioxide, diluting the slurry, adding phosphorus compounds, adding zirconium compounds, adding phosphorus compounds, adding alkaline aluminum compounds, curing, filtering, washing, drying, and crushing. By controlling the adding order and the additive amount of saline components of each material, the added coating agent can precipitate onto the surface of titanium dioxide particles respectively in forms of zirconium phosphate, aluminum phosphate and hydrated aluminum oxide, then through the process like curing, filtering, washing, drying and steam flow crushing, light fastness of the titanium pigment product can be increased, and the characteristics such as high brightness and high opacity can be maintained. Moreover, the dispersibility of the titanium pigment product in an aquosity system is improved, thereby facilitating slurry preparation, slurry storage and the like in use of titanium dioxide.

The present invention aims to provide an ink for ink jet recording that is excellent in storage stability and discharge stability and attains high coloration on regular paper or gloss paper and high glossiness on gloss paper. The ink for ink jet recording of the invention includes: water; and a pigment dispersed by using a polymer which is obtained by polymerizing at least 50% by weight or more of benzylacrylate and 15% by weight or less of (meth)acrylic acid as components of the polymer and has an acid value of no less than 50 mgKOH/g and no more than 120 mgKOH/g and a weight average molecular weight of no less than 10000 and no more than 120000.

The present invention provides compositions containing transparent thermoplastic polymer, surface-modified oxide particles with a particle size of less than 200 nm, and organic NIR absorbers. The compositions of the present invention may find use in reducing diathermancy in sheets, films, glazing systems and roofing systems which may be incorporated into automobiles and buildings.

The invention relates to flame-retardant synthetic paper. The flame-retardant synthetic paper comprises polypropylene resin, polyethylene resin, an inorganic filler, a coupling agent, an antistatic agent, a lubricant and a coloring agent. The flame-retardant synthetic paper is characterized in that the flame-retardant synthetic paper further comprises a flame retardant. Raw materials and the partsby weight thereof are as follows: 100PHR of polypropylene resin, 20-90PHR of polyethylene resin, 50-300PHR of inorganic filler, 1-8PHR of coupling agent, 1-5PHR of antistatic agent, 0.5-5PHR of lubricant, 5-20PHR of coloring agent and 5-35PHR of flame retardant. Blending, mixing, rubberizing, molding by a calendar, leading out by a leading roller, embossing, cooling, corona treatment and windingare carried out on all the raw materials of the flame-retardant synthetic paper for preparing a product. The flame-retardant synthetic paper has the flame-retardant function and is difficult to burn.Even the flame-retardant synthetic paper is incinerated in a high-temperature incinerator, the flame-retardant synthetic paper can not produce harmful gas, not cause secondary pollution to society andhuman beings and be in line with the requirements of environmental protection.

The invention discloses a preparation method for a high-light fastness titanium dioxide pigment. The preparation method comprises the following steps of: preparing aqueous suspension of a titanium dioxide initial product; depositing a layer of dense silicon dioxide cladding layer on a titanium dioxide pigment; depositing an aluminum phosphate compound on the silicon dioxide-coated titanium dioxide pigment; depositing aluminum hydroxide by using a parallel-flow method; after the aluminum hydroxide is coated, stirring and aging; and filtering, washing, drying, and performing fluid energy milling and organic treatment to obtain the high-light fastness titanium dioxide pigment. The method provided by the invention has the advantages of high controllability, reproducibility, high operability and the like, facilitates industrial production and has a good application prospect. The titanium dioxide pigment prepared by the method has the advantages of high light fastness, high light resistance, high non-transparency, high color-change resistance and the like, and can be used in decoration paper, laminated paper and coating and plastic products which have high requirements on the light resistance.

The present invention provides an optical element having an optical film, the optical element comprising a support frame having a shaft therein, the support frame being provided around a perimeter of the optical element and the optical film having slots on a periphery thereon, the periphery of the optical film being provided on the support frame. The invention further provides a pin provided in each of the slots and protruding into the support frame and slidable on the shaft by a controlled tensile force and a spring mechanism that is slidable on the shaft for providing the controlled tensile force to the optical film, wherein the optical film is an asymmetric diffuser.

The invention discloses an LED fluorescent glue prepared from the following components (by the total weight of 100%): 3.10%-3.40% of OE-6450A (silica gel main agent), 2.60%-2.90% of OE-6450B (silica gel curing agents), 72.80%-75.54% of TO powder (dispersing agents), 6.3%-7.0% of silicon dioxide powder (SiO2), 10.6%-11.8% of aluminum oxide powder (Al2O3), 1.4%-1.7% of ST-11001 (silica gel), 0.28%-0.32% of JZ-520A (glue main agent) and 0.18%-0.22% of JZ-520B (glue curing agents). The invention can effectively excite the light spots of finished products and improve the confidence degree of finished products, has the advantages of low cost and convenient use, and can be used for preparing fluorescent powder for white-light LED elements.

The invention discloses a luminescent material having aggregation-induced emission, a method of making and an application thereof. The luminescent material herein has properties of aggregation-induced emission/aggregation-enhanced emission with the maximum absorption wavelength red shift to a visible area so that this type of luminescent material has potential applications in the field of biology. The luminescent material allows the formation of transfer of electric charges in a molecule and exhibits strong polar dependent emission in different solvents. The luminescent material does not emit due to strong dipoalr interaction in a molecule, but emits in a weak-polar environment with a cell. The luminescent material can serve as intracellular lipid droplet and intramicroalgae lipid droplet, and has the advantages of high selectivity, high emission stability and high biological compatibility.

The invention relates to an optical conversion luminous film and a preparation method thereof. The optical conversion luminous film is formed by a diffusion film and a mixed paint layer on the diffusion film; the optical conversion luminous film has the thickness of 30-200mum, wherein, the thickness of the diffusion film is 20-70mum; the mixed paint layer is made of 10.000-30.000% of yellow luminous fluorescent material, 0.001-2.000% of red luminous fluorescent material, 60.000-89.000% of polymer resin, 1.000-5.000% of bi-amino silane, 0.000-20.000% of diluting agent and 0.000-5.000% of accessory ingredient. By combining the yellow luminous fluorescent material and the red luminous fluorescent material, the invention can realize the aim of regulating chromaticity coordinate, color temperature and color rendering index, thus preparing the optical conversion luminous film which is made of the fluorescent materials and has the advantages of high color rendering index of the photodiffusion effect, good property of uniform light, anti-dazzle, high light conversion efficiency, low cost, excellent aging characteristic and simple production technique.