摘要:
Method of manufacturing a luminescent product exhibiting a daytime color and a glow in the dark color, where the glow in the dark color exhibits long term glow in the dark characteristics after absorbing energy from light sources. At least one resin material and at least one antisettling agent are mixed and combined with a plurality of luminescent crystals capable of glowing in the dark after the absorption of light. This mixture is combined with solvents, colorants, and additives to produce a luminescent material having a daytime color that differs from its glow-in-the-dark color.
摘要:
Luminescent polymers are prepared from thermosetting unsaturated polyesters, suspending fillers and phosphorescent pigments and utilized to make gel coated articles and molded, cast and fiberglass reinforced plastic (FRP) articles. The luminescent polymers show bright and long-lasting photoluminescent afterglow, strong thermostimulation of afterglow by heat and electroluminescent properties. The preferred thermosetting unsaturated polyester resins are prepared by condensing mixtures of ethylenically unsaturated and aromatic dicarboxylic acids and anhydrides with dihydric alcohols and a polymerizable vinylidene monomer. Preferred suspending fillers and thixotropic modifiers include silica, microspheres, glass fibers and other short fibers, nepheline syenite, feldspar, mica, pumice, magnesium sulfate, calcium carbonate, bentonite and the various clays and thixotropic modifiers and mixtures thereof. Preferred phosphorescent pigments include alkaline earth aluminate phosphors, zinc sulfide phosphors and mixtures of these phosphors.
摘要:
An aqueous composition contains a polymer dispersed in water with polyvinyl alcohol as a protective colloid (abbreviated to PVA-dispersed polymer) and a fluorescent or phosphorescent dye.
摘要:
An electroluminescent phosphor comprised of particles of phosphor material substantially each particle thereof having a coating of magnesium fluoride thereon. The phosphor is coated from a solution of magnesium acetate, trifluoroacetic acid and isopropyl alcohol.
摘要:
A fluorescent lamp cover which comprises a transparent resin containing a fluorescent brightening agent so as to cut off 90% or more of the rays of 410 nm or less, wherein the fluorescent brightening agent is represented by the following formula (I): 1 wherein R1 and R4 each represents a hydrogen atom, an alkyl group or an alkoxyl group; R2 and R3 each represents an alkyl group; and nullAnull represents a substituted aryl or substituted ethenyl group.
摘要:
Provide is a polymeric fluorescent substance or polymeric fluorescent substance solution which can attain higher luminous efficiency as a polymer LED, with using a polymeric fluorescent substance having a specific content of water or poor solvent, or a polymeric fluorescent substance solution containing a specific content of water or poor solvent. Also provided is an organic electroluminescence device comprising at least one light-emitting layer containing substantially no particle-like foreign materials having a diameter of more than 1 nullm and having few dark spots.
摘要:
A fluorescent substance of the following general formula: LnXA1-XPO4 wherein Ln represents at least one element selected from the group consisting of Nd, Yb and Er; A represents at least one element selected from the group consisting of Y, La, Gd, Bi, Ce, Lu, In and Tb; and X represents a value within the range of 0.01 to 0.99.
摘要:
A fluorescent substance of the following general formula: LnXA1-XPO4 wherein Ln represents at least one element selected from the group consisting of Nd, Yb and Er; A represents at least one element selected from the group consisting of Y, La, Gd, Bi, Ce, Lu, In and Tb; and X represents a value within the range of 0.01 to 0.99.
摘要:
Pigment-free mixtures, containing a) at least one optical brightener and b) at least one (co)polymer, with at least one N-vinylcarboxamide incorporated in the polymer and/or at least one nitrogen-containing heterocyclic ring and/or which may form a nitrogen-containing heterocyclic ring.
摘要:
A radiation-sensitive coating material, in addition to a base polymer, has a solvent and a radiation-active substance which forms an acid on irradiation by light (including energetic electrons or ions), a fluorescent substance which alters its fluorescence property subject to a change in the acid content of its surroundings. In a process for exposing a substrate coated with the coating material at least one sensor in the exposure chamber of the exposure apparatus measures the intensity of the change in fluorescence spectrum as a function of time during the exposure operation. From the course of intensity at the time of an individual line of the fluorescence spectrum or the intensity integrated over a wavelength interval it is possible to determine the endpoint of the exposure operation by way of electronic algorithms. Deviations from experimentally determined ideal curves of the intensity course provide information on erroneous functions in the course of coating material application and exposure.