Blue pigments glow in the dark for hours. (Additives).Honeywell Specialty Chemicals, Morristown, N.J., has added new blue shades to its line of luminescent lu·mi·nes·cent adj. Capable of, suitable for, or exhibiting luminescence. [Latin l  men, l pigments. Designed for thermoplastic applications like toys, Lumilux Effect Blue SN and SN-F are said to provide long afterglow afterglowsmall amounts of light emitted by a phosphor after the stimulating radiation has ceased. Seen in x-ray intensifying screens and fluoroscopic screens. once excited by daylight or uv light. Unlike the older Lumilux Effect Blue N, (which they replace), the new grades do not release hydrogen sulfide on exposure to moisture. Honeywell says luminosity luminosity, in astronomy, the rate at which energy of all types is radiated by an object in all directions. A star's luminosity depends on its size and its temperature, varying as the square of the radius and the fourth power of the absolute surface temperature. of the new pigments is also 10 times greater than the previous product. Effect Blue SN is the brighter of the two and reportedly stays luminous in complete darkness for more than 36 hr. Blue SN-F can fluoresce fluo·resce intr.v. fluo·resced, fluo·resc·ing, fluo·resc·es To undergo, produce, or show fluorescence. [Back-formation from fluorescence. for about 13,3 hr after excitation. Honeywell says both products comply with the European EN 71/3 standard for toys and are not skin or eye irritants. Tel: (800) 523-7043, www.lumiluxpigments.com |
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