Additionally, the coating can include filler, such as granular solids incorporated to impart toughness, texture, give the coating desired properties, or to reduce the cost of the coating. Such an ultraviolet absorbing agent may be optionally used together in several kinds. Fillers can include a type of pigment that serves to thicken the film, support its structure and increase the volume of the coating. A styrene vinyl monomer is yellowed so easily by reason of having an aromatic ring that the copolymerization with an acrylic vinyl monomer is most preferable in view of light resistance. Lines connecting points are least-squares lines of best fit. The b value showing yellowness was measured by a reflection measuring method by C/2° light source with an SM color computer (manufactured by Suga Test Instruments Co., Ltd.). Thus, the spherical particles preferably have a crosslinked structure. Examples of pigments known for at least partial UVA reflection include zinc-containing inorganics and antimony trioxide, both of which at least partially absorb UVC. pigment yellow ...). Here, we conducted controlled flight tunnel tests of the efficacy of the BirdShades window treatment in realistic daylight collision conditions. A white film with a coated amount of 4.0 g/m2 was obtained in the same manner as Example 2 except for replacing the spherical particles with nonporous acrylic resin particles (“TECHPOLYMER” SSX-102, manufactured by Sekisui Plastics Co., Ltd., a refractive index of 1.49, a volume average particle diameter of 2.5 μm, a coefficient of variation CV of 10%, an acrylic copolymer, crosslink: present, ultraviolet absorbing agent: none, light stabilizer: none). You can also choose to receive updates via daily or weekly email digests. Technologies, applications and markets We determined that a collision was likely if the bird flew in line with the windows and hit the mist net. Content of spherical particles (% by weight)=weight A (g) of spherical particles/0.05 (g)×100. We performed flight tunnel tests of whether the BirdShades external window film reduced the likelihood that two species of song bird (zebra finch, Taeniopygia guttata and brown-headed cowbird, Molothrus ater) collide with windows during daylight. BirdShades have developed a short wavelength (ultraviolet) reflective film that appears as a slight tint to the human eye but should be highly visible to many bird species that see in this spectral range. Highly reflective materials that are ideal for UV and lighting systems. No. In the case of a white film composed of three layers of A layer/B layer/C layer in which two surfaces have different compositions, at least one of the A layer and the C layer corresponding to the film surface is preferably a layer in which inorganic particles and/or organic particles are contained in polyester by 0.5% by weight or less with respect to the total weight of each layer (the layer containing inorganic particles and/or organic particles). The UVC reflective coating of anyone or all of the above embodiments, wherein the coating is substantially devoid of titanium dioxide. The determination of nonporous spherical particles allows the interface at which reflection and diffusion are repeated to be decreased more, and allows a loss amount of light to be decreased to the utmost limit. Robin G. Thady performed the experiments, analyzed the data, authored or reviewed drafts of the paper, and approved the final draft. First, the spherical particles as described above are mixed with a binder resin, a solvent and optionally various kinds of additives described below, and thereafter dispersed uniformly to obtain a coating solution containing the spherical particles. 1. We placed a fine mist net in front of the windows to prevent actual collisions. The reason why luminance of the backlight is improved by making the coating layer containing spherical particles is not clear, but it is conceived that reflection and diffusion are repeated at an interface between a binder resin and spherical particles by containing spherical particles to decrease the refractive index difference between the binder resin and the spherical particles, so that the loss amount of light not propagated to the front is decreased. This high solids level also allows for the coating to be applied in very thin films. As shown in FIG. Fillers are usually relatively inexpensive and inert materials, such as diatomaceous earth, talc, lime, barytes, clay, or the like. Germicide Reflective Paint behaves like normal paint on its application. "Following" is like subscribing to any updates related to a publication. and you may need to create a new Wiley Online Library account. For example, a light reflective coating can be used to provide aesthetic benefits or energy saving benefits. As this non-parametric repeated-measures test analyzed rank data, the actual numerical values that we chose were not that important. Examples of an organic ultraviolet absorbing agent include benzotriazole, benzophenone, oxalic acid anilide, cyanoacrylate, and triazine. Monday-Friday 8:00am-6:00pm EST, Copyright © 4). A white film composed of a 250 μm porous biaxial oriented polyethylene terephthalate (“LUMIRROR” E6SL, manufactured by Toray Industries Inc.) was not provided with the coating layer, and subjected to light resistance evaluation and luminance measurement. When the coating solution containing the spherical particles is coated on the white film as a base material, the coating solution may be coated by an optional method. 10.0 g of “HALSHYBRID” UV-G13 (an acrylic copolymer, solution of a concentration of 40%, a refractive index of 1.49, manufactured by Nippon Shokubai Co., Ltd.), 26.1 g of ethyl acetate, and 4.05 g of nonporous acrylic resin particles as spherical particles (“TECHPOLYMER” SSX series, SSX-105, manufactured by Sekisui Plastics Co., Ltd., a refractive index of 1.49, a volume average particle diameter of 5.0 μm, a coefficient of variation CV of 9%, an acrylic copolymer, crosslink: present, ultraviolet absorbing agent: none, light stabilizer: none) were mixed and stirred to prepare a coating solution with the spherical particles added. In the present invention, the white film as a base material is more favorable if visible ray reflectance is higher, and thus a white film containing air bubbles therein is used. These ultraviolet absorbing agents only absorb ultraviolet rays and may not capture an organic radical generated by ultraviolet irradiation, so that this radical occasionally deteriorates a white film as a base material in a chained manner. Inorganic materials can include what are generally referred to as pigments. Generally, an opacifying pigment, which imparts whiteness, is a material that imparts opacity in a coating by light scattering due to index of refraction differences between the opacifying pigment and another material in the coating, such as a binder or air voids. The present inventors have determined that common refractive index values for coating materials are not accurate for UVC reflective application unless those refractive index values are measured at the UVC wavelengths. Ultraviolet-reflective film applied to windows reduces the likelihood of collisions for two species of songbird. (ii) The insoluble substance in the organic solvent is regarded as the spherical particles, whose weight A (g) is measured to calculate the content by the following expression. Then, polymers are positioned in a T-die three-layer mouthpiece so that the polymer in the extruder B is an inner layer (B layer) and the polymer in the extruder A is both surface layers (A layer), and they are melted and formed into a sheet having three layers of A layer/B layer/A layer. BirdShades had no influence on the collection, analysis, interpretation, or presentation of the data and did not contribute to the preparation of this manuscript. As a result, when a coating layer containing spherical particles is coated on at least one side of a white film and specific conditions are made for a relation of refractive index difference between the contained spherical particles and a binder resin forming the coating layer and a pore state of such spherical particles, more effect of improving luminance in being used for the backlight may be confirmed than the case of the white film singly and such problems have been studied to be solved. Light reflective coatings, such as paint, can be used for a number of different applications.

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