LOW-EMISSION COATED ARTICLES Russian patent published in 2012 - IPC C03C17/36 

FIELD: chemistry.

SUBSTANCE: invention relates to low-emission coated articles in which there is a combination of good visible transmission (T_vis) and an excellent coefficient of influx of solar heat (CISH), thus providing an improved (i.e. higher) T_vis:CISH ratio. Such coated articles can be used in double glazing, windows and/or other suitable applications. The insulating double-glazed window has a first and a second glass substrate joined on the edges to form an insulating space in between. On one of the substrates near the insulating space, there is a layer system in which a silver-containing infrared-reflecting layer lies between dielectric layers containing silicon nitride. The layer system consists of a first layer containing Si₃N₄ 230-320 Ǻ, a first layer of Ni and/or NiCr 10-40 Ǻ, an infrared-reflecting layer, a second layer of Ni and/or NiCr 10-40 Ǻ, a second layer containing Si₃N₄ 450-560 Ǻ. The insulating double glaze has T_vis of 47-60%, CISH of not more than 0.36 and T_vis:CISH ratio of at least 140.

EFFECT: obtaining low-emission coated articles in which there is a combination of good visible transmission (T_vis) and an excellent coefficient of influx of solar heat (CISH), thus providing an improved (ie higher) T_vis:CISH ratio.

14 cl, 5 tbl, 4 ex, 3 dwg