Network made of crossed interwoven wires for constituting light attenuating screen and forming openworked grid with determined opening factor, where wires are coated with composition having polymeric binder and organic photochromic pigment

摘要

The network made of crossed interwoven wires for constitution of a light attenuating screen and for forming an openworked grid with determined opening factor (5% or 3%). The interwoven wires are coated with a composition (5-15% m/m) having a polymeric binder (4-14% m/m) and an organic photochromic pigment (0.09-0.3% m/m). The photochromic organic pigment comprises Photosol(RTM: Photochromic dye), Variacrol(RTM: Photochromic dye) or Reversacol(RTM: Photochromic dye). The network made of crossed interwoven wires for constitution of a light attenuating screen and for forming an openworked grid with determined opening factor (5% or 3%). The interwoven wires are coated with a composition (5-15% m/m) having a polymeric binder (4-14% m/m) and an organic photochromic pigment (0.09-0.3% m/m). The photochromic organic pigment comprises Photosol(RTM: Photochromic dye), Variacrol(RTM: Photochromic dye) or Reversacol(RTM: Photochromic dye). The polymeric binder has a flexibility characterized by an elongation at break measured according to standard DIN 53504 = 600%. The composition comprises an anti-ultraviolet stabilizing agent (0.09-0.3% m/m) and antioxidative agent (0.2-1% m/m). The interwoven wires are associated by weaving, and are made of glass. Independent claims are included for: (1) a screen or curtain; and (2) a process of fabricating a network.