1319 results about "Ultraviolet light exposure" patented technology

A method for managing UV irradiation for curing a semiconductor substrate, includes: passing UV light through a transmission glass window provided in a chamber for curing a semiconductor substrate placed in the chamber; monitoring an illuminance upstream of the transmission glass window and an illuminance downstream of the transmission glass window; determining a timing and/or duration of cleaning of the transmission glass window, a timing of replacing the transmission glass window, a timing of replacing a UV lamp, and/or an output of the UV light based on the monitored illuminances.

Naphthalate polyester articles can be coated with polymerizable compositions containing a vinyl-functional crosslinkable film former, a large amount of benzotriazole and a copolymerizable monomer that solubilizes the benzotriazole. The cured compositions help protect the naphthalate polyester from UV exposure and other weathering effects.

The invention provides a water purification system and method for combining ultraviolet germicidal irradiation and photocatalysis in a helical reactor geometry that maximizes both the photocatalytic efficiency and the germicidal dosage of the ultraviolet irradiation in deactivation of microbes and the destruction of contaminant organic compounds.

Methods are disclosed of making linear and cross-linked, HMW (high molecular weight) polysilanes and polygermanes, polyperhydrosilanes and polyperhydrogermanes, functional liquids containing the same, and methods of using the liquids in a range of desirable applications. The silane and germane polymers are generally composed of chains of Si and/or Ge substituted with R′ substituents, where each instance of R′ is, for example, independently hydrogen, halogen, alkenyl, alkynyl, hydrocarbyl, aromatic hydrocarbyl, heterocyclic aromatic hydrocarbyl, SiR″₃, GeR″₃, PR″₂, OR″, NR″₂, or SR″; where each instance of R″ is independently hydrogen or hydrocarbyl. The cross-linked polymers can be synthesized by dehalogenative coupling or dehydrocoupling. The linear polymers can be synthesized by ring-opening polymerization. The polymers can be further modified by halogenation and/or reaction with the source of hydride to furnish perhydrosilane and perhydrogermane polymers, which are used in liquid ink formulations. The synthesis allows for tuning of the liquid properties (e.g., viscosity, volatility, and surface tension). The liquids can be used for deposition of films and bodies by spincoating, inkjetting, dropcasting, etc., with or without the use of UV irradiation. The deposited films can be converted into amorphous and polycrystalline silicon or germanium, and silicon or germanium oxide or nitride by curing at 400-600 DEG C. and (optionally) laser- or heat-induced crystallization (and/or dopant activation, when dopant is present).

The invention includes a three-dimensional printing (3DP) machine that has at least one ultraviolet (UV) light source directed at powder or slurry being processed by the 3DP machine and/or directed at any of various surfaces or machine components, in a manner suitable to kill or damage microorganisms to a desired extent. The UV light sources may be either stationary or movable, and may be either pulsed or substantially continuous, and may operate in any desired sequence and timing with respect to other operations performed by the machine. The invention may include ultraviolet illumination in such a way as to interact with powder to sterilize or disinfect powder either while the powder is stationary or, alternatively, as powder is being moved from one place to another within the 3DP machine, or both. The invention also includes methods of performing three-dimensional printing using such illumination. The invention also includes the combination of other methods of sterilization or disinfection with the use of ultraviolet light. The invention also includes the use of ultraviolet light sources for a combination of polymerization/cross-linking in addition to sterilization/disinfection.

The invention relates to a PVC homogeneous penetrating coiled material floor, a production process thereof and a device. The product comprises five layers which are UV curing layer, a wear-resisting transparent layer, a PVC colored basis material layer with embedded colored plastic granules, a stable layer and an elastic foaming layer from the upper part to the lower part respectively. The product has the advantages of transparent and artistic patterns in traditional process, simultaneously has the advantages that the wear resistant property is better, the surface is contamination resistant and ultraviolet irradiation resistant, the product stability is good, the elasticity is good, and the comfortable feeling is better. Simultaneously the device has low cost and simple production process, is easy to be operated and convenient for the industrialized production, and has better social and economic values.

Subject matter of the invention is the procedure and plant for industrial wastewater and/or drinking water treatment by means of electrochemical methods and advanced oxidation processes. The preparatory phase of gravitational sedimentation is followed by main treatment consisting of electrocoagulation, electrooxidation and electroflotation through action of metal electrode sets made of inox, steel and aluminium respectively, with parallel disinfection/oxidation with ozone, UV irradiation and ultrasonic treatment, as well as recirculation in the electromagnetic field. At the end of the main treatment, the mixture of floccule and water is subject to coagulation/flocculation by electrochemically generated steel and aluminium floccule with slow infusion of ozone. The next phase is separation of sediment from clean water which is discharged through sand and activated charcoal filters for the purpose of removal of light floating floccule in the collection tank. If required, the water is subject to oxidation with simultaneous action of UV irradiation and ozone for the purpose of final destruction of organic matter and ammonia, and potential residues of microbiological contamination.

The invention discloses a preparation method of a low-load-capacity and high-activity load type ruthenium catalyst using titanium dioxide as a carrier. According to the invention, the titanium dioxide is used as the carrier, an ageing solution is illuminated by using ultraviolet rays in a precipitation and deposition ageing process, thus interaction of a ruthenium precursor and the titanium dioxide is enhanced, the dispersion degree of the precursor is improved, and further the high-dispersion titanium dioxide loaded ruthenium catalyst is obtained. The preparation method has the advantages of simple equipment and process, high yield, and convenience for industrialized production; and the prepared ruthenium catalyst has the advantages of small ruthenium granularity and good reproducibility. The ruthenium catalyst is applied to a process for synthesizing methane by carbon dioxide through hydrogenation, and has high reactant transformation rate, high selectivity and good stability.

The invention provides an air conditioner indoor unit with a sterilization function, a control method and an air conditioner. The air conditioner indoor unit with the sterilization function comprisesa bottom shell (1); a negative ion generator (2) which is arranged in the bottom shell (1) and can release negative ions to air for sterilization and purification; and an ultraviolet lamp (3) which isarranged in the bottom shell (1) and can be used for ultraviolet radiation to the air for sterilization and purification. Through the air conditioner indoor unit, the negative ion generator and the ultraviolet lamp can be used for sterilization and purification of the air entering the indoor unit jointly, and the indoor air sterilization and the interior sterilization of the air conditioner are achieved; the sterilization effect is improved, and bacteria and microorganisms can be killed effectively; and the influence of bacteria breeding on user health is avoided.

The present invention provides a cosmetic or food composition which is excellent in a skincare effect, particularly an effect of whitening the skin browned due to ultraviolet radiation or aging, and which can be safely used for many mammals. The present invention provides a whitening composition comprising reduced coenzyme Q represented by formula (1) as an effective component: wherein n represents an integer of 1 to 12. The present invention also provides a whitening composition further comprising oxidized coenzyme Q represented by formula (2) as an effective component: wherein n represents an integer of 1 to 12. The present invention also provides a method for whitening the skin of a mammal, the method comprising administering the mammal with the composition.

An active energy ray (e.g. UV rays)-curable organopolysiloxane resin composition comprises (A) 100 parts by weight of an organopolysiloxane resin containing epoxy groups and aromatic hydrocarbon groups, (B) 0.05 to 20 parts by weight of a photo acid generator, (C) 0.01 to 20 parts by weight of a photosensitizer or photo-radical generator, and (D) 0 to 5,000 parts by weight of an organic solvent. An optical transmission component made of the above-mentioned composition cured by irradiation with active energy rays (for example, UV rays). A method for manufacturing an optical transmission component by irradiating the above-mentioned composition with active energy rays (for example, UV rays).

The invention provides a UV illumination device for sterilizing and disinfecting a desired item or area. The device is having a built-in camera and UV light source in order to disinfect and sterilize the desired item or area. The device automatically detects the human presence and the acts as a normal household light and can be fit inside the conventional light bulb or tube light holder. Further, the device uses an artificial intelligence module, object detection module, machine learning module, localization module, and a plurality of sensors to easily detect the application area and act according to parameters of a particular item. Furthermore, the device can be manually controlled by using a remote device which is having a display where the user can select, identify, prioritize the items and can adjust the time and intensity of the light projection based upon his/her own intellect.

A process for the production of a coating layer on a three-dimensional shaped substrate, comprising the steps: (1) providing a three-dimensional shaped substrate, (2) initial application of a coating layer on the surface of the substrate from a coating composition curable by free-radical polymerization of olefinic double bonds on UV irradiation and (3) irradiating the coated substrate with UV radiation; wherein the coating composition contains the following constituents: A) at least one free-radically polymerizable binder containing olefinically unsaturated groups, B) optionally, at least one free-radically polymerizable monomeric reactive diluent containing one or more olefinically unsaturated groups, C) at least one photoinitiator for free-radical polymerization, and D) at least one metal compound.

The invention takes the acrylic ester emulsion as the main film forming matter, adds water-based polyurethane emulsion, butylbenzene emulsion and organosilicon emulsion as modifier, takes the water as solvent, adds other adjuvant and gets the product. The invention overcomes the limitation when only employing single macromolecular emulsion because it employs several macromolecular emulsion, which can cover the shortage each other. The invention is characterized in that it takes water as solvent, which is non-toxic, non-odour and non pollution; the modifier and film coating possesses excellent hydrophobicity after drying; the product possesses unique water resistance property, ultra-violet rseistance and ageing resistance which the paint do not possess when employing single macromolecular emulsion; and the color can be various according to the requirement; the adhesive strength is strong, the effect of water resistance and impervious is good, possesses the property of heat resistance and freezing resistance and good extensibility; the product can be painted directly and the process is easy, and it is suitable for the water-proof, seepage control and moisture proof for various new and old roofing, basement and toilet and so on.

A method for performing a photopheresis procedure is provided comprising collecting MNCs in a suspension comprising RBCs and plasma and lysing the red blood cells in the solution, preferably by combining the suspension with a solution to cause lysis. In one example, the solution for causing lysis of the red blood cells comprises ammonium chloride, and the suspension including the ammonium chloride is incubated to cause lysing. After lysing, the suspension may be washed to remove plasma and hemoglobin freed by the lysis of the red blood cells, and an ultraviolet light activated substance is added to the suspension. The suspension is then irradiated with ultraviolet light.

The invention discloses a method for treating cyanide-containing wastewater through photoelectrochemistry, which comprises the following steps of: regulating the pH value of the cyanide-containing wastewater to be more than 10, adding NaCl, electrolyzing under the radiation of ultraviolet, and regulating the pH value of the effluent to be 7-9 to ensure that cyanides meet the standard. A device used for implementing the method comprises a reaction tank; the bottom on one side of the reaction tank is provided with a water inlet, and the bottom on the other side of the reaction tank is provided with a water outlet; anode plates and cathode plates are inserted in the reaction tank at intervals, all the anode plates are connected in series, and all cathode plates are connected in series; and an ultraviolet lamp is arranged between each anode plate and each cathode plate. The cyanides in water are effectively removed through functions such as electrochemical anode direct oxidation, photocatalytic oxidation, active chlorine oxidation, ultraviolet radiation of active chlorine to generate chlorine radicals and hydroxyl radicals and the like. Meanwhile, heavy metal ions in the cyanide-containing wastewater are deposited on cathodes in the electrochemical reaction process, and are removed and recycled; and organic matters in the cyanide-containing wastewater are effectively degraded and removed.