329 results about "Ultraviolet absorbance" patented technology

The invention provides a class of actinically-crosslinkable silicone-containing prepolymers which comprise (1) ethylenically-unsaturated groups and (2) UV-absorbing polymeric units, latent UV-absorbing polymeric units, and / or dual photo-functional polymeric units. The prepolymer of the invention can be used to prepare silicone hydrogel contact lenses capable of absorbing UV / visible radiation. The present invention is also related to silicone hydrogel contact lenses made from a prepolymer of the invention and methods for making the contact lenses in a cost-effective way and with high consistency and high fidelity to the original lens design.

This invention relates to novel ultraviolet absorbing methine-based compounds comprising polyoxyalkylene moieties. Such compounds provide excellent, inexpensive, protection from ultraviolet exposure within various media, including, but not limited to, thermoplastics. The presence of polyoxyalkylene chains on the methine backbone permits such an introduction within thermoplastics while simultaneously providing very low degrees of migration from the target substrate. This invention also concerns methods of making the aforementioned ultraviolet absorbing thermoplastic compositions.

The present invention has an object to provide an external dermatological formulation having satisfactory blood flow-promoting effect, antiinflammatory effect, antibacterial effect, moisturizing effect, whitening effect, UV-absorbing effect, UV-scattering effect, antioxidant effect, hair growing effect, hair nourishing effect, emusifying effect, astringent effect, wrinkle-reducing effect, cell-activating effect and / or transdermal absorption-promoting effect with a satisfactory safety and skin feeling; The object is solved by providing an external dermatological formulation comprising a saccharide derivative of alpha , alpha -trehalose and one or more members selected from substances having any one of blood flow-promoting effect , antiinflammatory effect, antibacterial effect, moisturizing effect, whitening effect, UV-absorbing effect, UV-scattering effect, antioxidant effect, hair growing efect, hair nourishing effect, emulsifying effect, astringent effect, wrinkle-reducing effect, cell-activating effect and transdermal absorption-promoting effect.

The invention relates to a protective cover sheet comprising a low birefringence protective polymer film and a layer that promotes adhesion to poly(vinyl alcohol), the protective cover sheet comprising at least one functional layer containing a UV-absorbing polymer.

A coating composition excellent in storage stability, excellent in coating appearance, adhesion and weather resistance, high in hardness, having ultraviolet absorbing ability, and capable of preventing deterioration of a ground or a substrate, which comprises (A) a polymer containing (a1) a silyl group having a silicon atom bound to a hydrolytic group and / or a hydroxyl group, (a2) a group having ultraviolet absorbing ability and (a3) a group having ultraviolet stability in the same polymer chain, and further optionally comprises (B) at least one component selected from the group consisting of an organosilane represented by (R1)nSi(OR2)4-n, a hydrolyzate of the organosilane and a condensate of the organosilane; and a cured product thereof.

The present invention provides a non-aqueous liquid composition from which the coated film on the skin is transparent and slippery, does not cause stickiness and uncomfortable feeling such as creaky feeling and stretch feeling, but causes fresh feeling of use, and keeps the capability of protecting the skin from ultraviolet rays for a desired period of time even under the presence of sweat or sebum, and which is suitable for sunscreen cosmetics, a skin external preparation or a bandage preparation. The non-aqueous liquid composition comprises particles composed of at least a copolymer derived from a silicone macromer (A) and an ultraviolet-absorbing compound and silicone oil in which the particles are dispersed, wherein the silicone macromer (A) exists in the copolymer within 1 to 20 wt % of all components of the particles and orients toward the outer surface of the particle, and wherein, the ultraviolet-absorbing compound is incorporated in the polymer particle as an independent component or a part of the copolymer.

A primer composition comprising (A) a vinyl polymer having hydrolyzable silyl groups and / or SiOH groups and organic UV-absorbing groups and (B) an organopolysiloxane cures into a primer layer having a coefficient of linear expansion equal to or less than 150×10−6 / ° C., which allows a polysiloxane hard coat to be applied thereon.

A transparent cured film including organic fine particles having an ultraviolet absorbing group and an average particle diameter of 1 to 200 nm, the particles being dispersed in a matrix having an Si—O bond, and having a transmittance of visible light of 80% or more and a haze value of 10% or less. The coating composition can be produced, for example, from a coating composition containing (1) an alkoxysilane compound or polyalkoxysilane compound; (2) an aminosilane compound; (3) an epoxysilane compound; (4) a polymer ultraviolet absorber; (5) a curing catalyst; and (6) a solvent.

A primer composition comprises (A) a vinyl copolymer obtained through copolymerization of (a-1) a UV-absorbing vinyl monomer, (a-2) an alkoxysilyl group-containing vinyl monomer, and (a-3) another copolymerizable monomer, (B) a curing agent, and (C) a thermoplastic vinyl resin having a Tg of at least 80° C. Polycarbonate resin articles, when covered with an undercoat of the primer composition and an overcoat of an organopolysiloxane composition, exhibit improved transparency, mar resistance, weather resistance, and chemical resistance and find outdoor use as vehicle and building windows and windshields.

A UV-shielding coating composition comprises (A) a dispersion in a dispersing medium of composite zinc oxide nanoparticles which are obtained by coating surfaces of zinc oxide nanoparticles with an oxide or hydroxide of Al, Si, Zr and Sn, the dispersion having a photocatalytic degradability of up to 25%, (B) a vinyl copolymer obtained from copolymerization of an alkoxysilyl-containing vinyl monomer, a UV-absorbing vinyl monomer, and another monomer, and (C) a solvent. The composition is transparent to visible light, UV-shielding, mar resistant, weatherable, and durable.

Provided are a method for manufacturing a liquid crystal alignment film for enabling highly efficient anisotropy to be introduced into a film without rubbing, as well as a liquid crystal alignment film and a liquid crystal display element. A method for manufacturing a liquid crystal alignment film having [I] a step for forming, on a substrate, a photosensitive side-chain polymer film exhibiting liquid crystal properties in a predetermined temperature range, [II] a step for irradiating polarized ultraviolet rays to the side-chain polymer film, and [III] a step for heating the side-chain polymer film irradiated with the ultraviolet rays, the method being characterized in that the amount of irradiated ultraviolet rays in step [II] is within 1%-70% of the amount of irradiated ultraviolet rays that maximizes the difference [increment]A between the ultraviolet absorbance in the direction parallel to the polarization direction of the polarized ultraviolet rays and the ultraviolet absorbance in the direction perpendicular thereto in the side-chain polymer film.

An ultraviolet-absorbing composite powder comprising a plurality of composite powder particles, wherein the composite powder particle consists of an inorganic or organic core particle having an average particle diameter of 0.5-100 μm, and a compound of formula (1): which is adsorbed to the surface of the core particle is provided. The composite powder of the invention exhibits an excellent UV ray protecting property as well as smooth and comfortable texture, and is useful for manufacturing cosmetic products.

Novel ultraviolet absorbing compounds that are liquid in nature, are extremely low in color (and thus permit use without the concomitant necessity of adding large amounts of other coloring agents to combat such discoloring), and are highly effective in providing protection in wavelength ranges for which previous attempts at low-color ultraviolet absorbers have failed are provided herein. Such compounds provide such excellent, inexpensive, and beneficial protection from ultraviolet exposure within various media, including, but not limited to, clear thermoplastics. The particular compounds are generally polymeric in nature including various chain lengths of polyoxyalkylenes thereon and are liquid in nature to facilitate handling and introduction within the target media. In addition, such ultraviolet absorbers also exhibit extremely low migratory properties thereby providing long-term protective benefits to the target media as well. This invention also concerns the end products, specific broadly defined types of compounds providing such beneficial characteristics, methods of making such low-color compounds, and methods of producing such clear, UV protected end products.

Disclosed is an optical film which is characterized by containing an ultraviolet absorbing polymer which is derived from at least two monomers, namely an ethylenically unsaturated monomer having a partial structure represented by Formula (A) below in a molecule, and a monomer represented by Formula (B) below:

The invention relates to anti-ultraviolet anti-sunburn nano elemental fabric body-building protective clothes belonging to the technical field of functional healthy fabrics clothing production. The parts, i.e. exposed skin, a face, a neck, limbs, and the like, of a sailor, a shipman and a yardman who have maximum body injury caused by long-time solar radiation have obvious dryness, coarseness, desquamation, chromatosis, analosis, wrinkles and inelasticity and even have cancerization caused by sunlight. In the invention, rich and overall honey series mixtures, i.e. trace element vitamins and the like, are added to fiber production spinning solutions, i.e. the traditional ultraviolet absorption conditioner JCJ-966 and CJ-939 and the like; nano selenium and germanium closely contact with a work clothes through human body skin so as to continuously release the trace elements and nutrient substances into a human body and sufficiently regulate, supplement and antagonize internal element balance and enhance the immunity and the resistance. Thus the anti-ultraviolet anti-sunburn nano elemental fabric body-building protective clothes achieves the purposes of body building and cancer prevention.

A photocurable resin composition is provided that exhibits an excellent storage stability, that can be easily cured by ultraviolet radiation, and that cures to form a cured film that exhibits an excellent ultraviolet absorbing performance at around the 300 nm wavelength, an excellent physical strength, an excellent stain resistance, an excellent film uniformity, and an excellent adherence by the film. This photocurable resin composition comprises the following components (A) to (E): (A) 100 weight parts of a multifunctional acrylate or a multifunctional methacrylate, (B) 1 to 100 weight parts of an aliphatically unsaturated bond-containing organoalkoxysilane, (C) 1 to 300 weight parts colloidal silica, (D) 0.01 to 20 weight parts of an ultraviolet absorber that has an absorption wavelength at 220 to 400 nm, and (E) 0.01 to 30 weight parts of a photopolymerization initiator that has an absorption wavelength at 300 to 450 nm.

The invention discloses a manufacturing method of a nanometer thermal insulation material of automobile glass. The nanometer material mainly comprises the following components according to content percentage: 50-70% of nanometer modified organic silica solution, 5-10% of nanometer oxidized silica solution, 5-15% of nanometer indium tin oxide size, 10-20% of organic solvent and 1-5% of film forming substances, and the total percentage of all the components is 100%. By adopting the method, the nanometer size with the function of thermal insulation forms a film on the inner surface of the automobile glass through an organic silicon carrier, so that the glass has the function of thermal insulation, as well as very high visible light transmission, an excellent infrared rejection rate, an excellent ultraviolet absorption rate, prominent adhesion and ultrahigh film hardness.

Methods of forming UV-absorbent transparent coatings and transparent substrates coated with the same allow for a relatively lower temperature cross-linkage reaction between a UV-absorbent compound and an epoxy-alkoxysilane. More specifically, UV-absorbent coatings on transparent substrates are formed by prepolymerizing a mixture consisting essentially of a benzophenone, an epoxy alkoxysilane and an organic catalyst at a temperature of between about 40° C. to about 130° C. and for a time sufficient such that between about 30% to about 70% of the epoxy alkoxysilane has been converted to a ring-opened oligomer or polymer. Such prepolymerized mixture may then be hydrolyzed and coated onto the surface of a transparent substrate, and thereafter cured at a temperature of less than about 200° C. for a time sufficient to cross-link the hydrolyzed alkoxysilane with itself and the glass surface. Most preferably, the prepolymerized mixture is hydrolyzed prior to being coated onto the substrate in an acidic alcoholic solution. Preferred for use in the present invention as a UV-absorbent compound is tetrahydroxybenzophenone. The preferred epoxy alkoxysilane is 3-glycidoxypropyl trimethoxysilane. It is especially preferred that prepolymerization be effected in the presence of an organic catalyst, such as triethylamine (TEA).

An aqueous dispersion which is excellent in storage stability, and can form a coating film excellent in leveling properties, anti-checking properties, water resistance, etc., transparent and high in hardness, which is obtained by mixing and emulsifying (A) at least one selected from an organosilane represented by (R<1>)4-n-(Si)-(OR<2>)n, a hydrolysate of the organosilane and a partial condensation product of the hydrolysate, (B) a radical polymerizable monomer, (C) an emulsifier and (D) a hydrolytic catalyst for component (A) to reduce the particle size of an emulsion, as well as to allow hydrolysis of component (A) to proceed, and adding (E) a radical polymerization initiator to allow polymerization of component (B) to proceed, has a concentration of alcohols having a boiling point of 100° C. or less of 0.1 to 2.0 wt %, and further contains (F) a component having ultraviolet absorption and / or light stabilization action as needed.

Disclosed are a colorant which can realize an ink compositions possessing excellent lightfastness, waterfastness, color development, and rubbing / scratch resistance, and an ink composition containing the same. The ink composition comprises at least a colorant, a polymer covering the colorant and having, in its molecular chain, sites possessing ultraviolet absorbing activity and / or photostabilizing activity, water, and a water-soluble organic solvent. The ink composition according to the present invention include two preferred embodiments. In the ink composition according to the first preferred embodiment, the polymer functions as a dispersant and covers the colorant. In the ink composition according to the second preferred embodiment, the polymer is in the form of fine particles covering the colorant. Further, the colorant comprises: a dye or a pigment; and a polymer covering the colorant and having, in its molecular chain, sites possessing ultraviolet absorbing activity and / or photostabilizing activity, the dye or the pigment being in the form of fine particles.

The present invention provides a polarizing plate formed by laminating protective films respectively on both surfaces of a polarizing film comprising a polyvinyl alcohol resin with adhesive layers lying respectively therebetween. The protective film on one of the surfaces is a stretched polyethylene terephthalate film that contains an ultraviolet-absorbing agent and that exhibits a light transmittance of 10% or less at a wavelength of 380nm, while the protective film on the other thereof exhibits a light transmittance of 60% or more at a wavelength of 320nm. Further, each adhesive layer comprises a cured product of an ultraviolet-curable resin composition that contains an epoxy compound. The polarizing plate exhibits excellent ultraviolet absorbance, excellent tight adhesion between the polarizing film and the protective films, high wet-heat resistance, and high productivity, with no damage to the surface appearance.

The object of the present invention is to provide a laminated film excellent in light resistance, scratch resistance, transparency, dimensional stability and adhesion to a hard coating layer. The present invention is a laminated film comprising a base material layer, an easily adhering layer and a hard coating layer, wherein the easily adhering layer is formed on the base material layer and the hard coating layer is formed on the easily adhering layer, and further wherein (1) the base material layer is formed of a polyester resin formed from naphthalenedicarboxylic acid as a main dicarboxylic acid component and ethylene glycol as a main glycol component, (2) the hard coating layer has an ultraviolet absorbing function and has a pencil hardness of H or higher on the hard coating layer surface, and (3) said laminated film has a variation (Δb*) of less than 2.0 between transmittance b* values obtained before and after a 300 hours' xenon arc test of said laminated film.

The invention discloses a method for preparing a multielement co-doped nano titanium dioxide film comprising the following steps: 1) adding ferric nitrate nonahydrate, silver nitrate and guanidine hydrochloride solid into abatase titanium dioxide solution to prepare a mixed solution; 2) sustainably magnetically stirring the mixed solution under the water bath condition and obtaining an uniform sol; 3) storing the sol at room temperature for 10-12 days to obtain aging solution, preparing a coating glass slide by the aging solution and drying; 4) heat-treating the dried coating glass slide at 350-450 DEG C for 1 hour to obtain the multielement co-doped nano titanium dioxide film. The titanium dioxide film of the invention has functions of achievement the red shift of the ultraviolet absorbance, visible light response of the photocatalysis and no light antibacteria.

Disclosed herein are compositions of metal oxide nanoparticles having regular polyhedral nanocavities, where the metal oxide can be titania, and where the nanoparticles be nanorods. Also disclosed are titania nanoparticles with nanocavities that are doped with dopants. Methods of making metal oxide nanoparticles with nanocavities are also disclosed. Also disclosed are ultraviolet-blocking compositions including metal oxide nanoparticles with nanocavities, as well as methods of enhancing ultraviolet absorbance efficiency of an ultraviolet blocking composition. Additional uses of metal oxide nanoparticles with nanocavities include solar energy conversion systems and lithium-ion batteries.

The invention discloses an ultraviolet-resistant laundry emulsion, which comprises the following parts: 5%-15% aliphatic alcohol polyoxyethylene ether sodium sulfate, 2%-25% alkyl glycoside, 4%-18% alcohol ether carboxylate, 3%-38% coconut oil diglycollic amide, 2 %-36% sulfonate olefin, 0.5%-1.5% thickener, 2.5%-5% compliance agent and 0.5%-2.5% sun-screening agent with certain technical allocation. The invention can adsorb most of ultraviolet on the cloth, which improves the ultraviolet-resistant effect of textile effectively.

The invention belongs to the technical field of macromolecule protective films, and particularly relates to a polyester base film for a window film and a manufacturing technology of the polyester base film. The polyester base film is a thin film of a three-layer structure, the sandwich layer is a tearing resistance layer, and a high-barrier layer and an uvioresistant layer are arranged on the two sides of the sandwich layer. The tearing resistance layer is prepared from, by weight, 10%-15% of polyethylene glycol terephthalate-1,4-cyclohexane 2 methyl alcohol ester (PETG) and 85%-90% of optical grade PET polyester chips. The high-barrier layer is prepared from, by weight, 0.2%-0.35% of SO<2> particles and 99.65%-99.8% of poly naphthalene two formic acid glycol ester (PEN). The uvioresistant layer is prepared from, by weight, 3%-5% of ultraviolet ray absorption master batch and 95%-97% of optical grade PET polyester chips. The polyester base film can isolate ultraviolet rays, oxygen and vapor and prolong the service life of the window film, and has the advantages of being good in tearing resistance performance and optical performance. The invention provides a window film manufacturing technology which is easy to operate and low in cost.

Provided is a polarizer protective film of thin type, which has excellent heat resistance and excellent transparency as well as excellent UV-absorbing ability, has good external appearance of a film surface, and can be stably produced by film forming. The polarizer protective film of the present invention includes a resin layer (A) and a resin layer (B1) in the stated order, in which the resin layer (A) is a resin layer containing a (meth)acrylic resin as a main component and contains a UV absorber at a ratio of 0.5 to 10 wt % with respect to a resin component contained in the resin layer (A), and the resin layer (B1) is a resin layer containing, as a main component, a thermoplastic resin other than a (meth) acrylic resin.

Novel ultraviolet absorbing compounds that are liquid in nature, are extremely low in color (and thus permit use without the concomitant necessity of adding large amounts of other coloring agents to combat such discoloring), and are highly effective in providing protection in wavelength ranges for which previous attempts at low-color ultraviolet absorbers have failed are provided herein. Such compounds provide such excellent, inexpensive, and beneficial protection from ultraviolet exposure within various media, including, but not limited to, clear thermoplastics. The particular compounds are generally polymeric in nature including various chain lengths of polyoxyalkylenes thereon and are liquid in nature to facilitate handling and introduction within the target media. In addition, such ultraviolet absorbers also exhibit extremely low migratory properties thereby providing long-term protective benefits to the target media as well. This invention also concerns the end products, specific broadly defined types of compounds providing such beneficial characteristics, methods of making such low-color compounds, and methods of producing such clear, UV protected end products.

The present invention provides a polyvinyl alcohol-based resin (PVOH-based resin) composition having less coloration from melt processing and having high aging stability of the melt viscosity. The present invention relates to a polyvinyl alcohol-based resin composition comprising a polyvinyl alcohol-based rein having a structural unit represented by the following formula (1) and having an absorbance of 0.1 to 0.3 of 280 nm in an ultraviolet absorbance spectrum as a 4 mass % aqueous solution, a carboxylic acid and an alkaline (earth) metal salt, wherein when an aqueous solution of the polyvinyl alcohol-based resin composition is prepared so as to have a content of the polyvinyl alcohol-based resin of 4 mass %, the pH of the aqueous solution at 20° C. is from 5.5 to 7:[wherein R1, R2 and R3 independently represent a hydrogen atom or an organic group, X represents a single bond or a bonding chain, and R4, R5 and R6 independently represent a hydrogen atom or an organic group].

A polycarbonate resin laminate which has excellent scratch resistance and UV shielding property as well as high weatherability and durability sufficient for enduring long term open air exposure without detracting from excellent the transparency is provided. This polycarbonate resin laminate comprises a substrate (1) comprising a polycarbonate resin layer (1-i) and a thermoplastic (meth)acrylic resin layer having a UV absorbing group immobilized thereto (1-ii) on at least one surface of the polycarbonate resin (1-i); and a cured film (2) of a scratch resistant coating composition containing UV absorbing inorganic oxide fine particles and / or an organic UV absorber on the layer of the thermoplastic (meth)acrylic resin having a UV absorbing group immobilized thereto (1-ii). The laminate has a haze of up to 2%.