BLUE COLOURED HEAT-TREATED COATED ARTICLE HAVING LOW SOLAR FACTOR VALUE Russian patent published in 2018 - IPC C03C17/36 

FIELD: glass; mineral and slag wool.

SUBSTANCE: invention relates to blue-coloured coated glass. Following layers are applied to the glass: a first dielectric layer containing silicon nitride; a first IR-reflective layer containing NbZr; a second dielectric layer containing silicon nitride; a second IR-reflective layer containing NbZr; a third dielectric layer containing silicon nitride. Coated article has glass side visible reflectance not greater than 18%, a film side/interior reflective a* colour value of −2 to +12, glass side/exterior reflective blue colouration comprising a glass side/exterior b* colour value of from −8.0 to −30.0; and (i) if measured monolithically has an SF value of no greater than 0.35 and an SHGC value of no greater than 0.40, and/or (ii) if an insulating glass (IG) window unit having two glass substrates has an SF value of no greater than 0.25 and an SHGC value of no greater than 0.27.

EFFECT: technical result is the reduction of the solar factor and the coefficient of heat inflow from solar radiation.

69 cl, 3 dwg, 12 tbl, 3 ex