| 摘要 |
PURPOSE:To improve light resistance, etc. by incorporating in a plastic film, photochromics, consisting of spiranes, methane leuco compds., as bases, and glass powder, etc., and forming it into a 0.001-5mm. thick film. CONSTITUTION:The plastic film contains photochromics, such as spiranes, e.g., 1,3,3-trimethylindolino-6'-nitrobenzospiropyran, thioindigo, bianthrone, triphenylmethane leuco compds., o-nitrobenzyl derivs., dithizone Hg salt, thiocarbazine Hg salt, and glass powder using Na2O-SiO2-Al2O3-B2O3 as a base mixed with silver halide and copper, and CaTiO2(Ni-Mo). The film is prepared by melting a and dispersing them to form a 0.001-5mm. thick film capable of changing color on irradiation of sunshine and light. |
