Flexible light-scattering material for illuminators etc. - comprises transparent elastomer matrix contg. dispersed particles of transparent material with different refractive index

摘要

Light-scattering material (I) consists of a transparent elastomer matrix (II) with Tg below room temp., contg. dispersed particles on transparent material (III) with a refractive index (R.I) different from that of (II). Pref., (II) are acrylate ester (co)polymers with Tg below room temp., or (co)polymers of styrene, DVB, vinyl acetate etc., with corresp. monomers for monomer-based processes. (III) are particles of, e.g. glass, quartz, polyamide, polystyrene, PVC, PVAC, fluoropolymer, silicone resin, ABS, EPDM rubber, methacrylate resin, polysulphone, polyimide, PET, etc.. USE/ADVANTAGE - Used in illuminators etc., e.g. as lighting elements in cars (map lamps, space lamps, spotlights, instrument lighting etc.), in which the light passes through a transparent fibre optic etc. fitted with a light-scattering end-plate made of (I). Other applications include advertisement lighting, background lighting for office machines, various types of sign lighting and markings, and (with UV) for sterilising and cleaning purposes in pools, filtration units etc.. (I) is highly efficient w.r.t. light scattering, it is also flexible, easy to handle and process, and reasonably easy to produce.