Patent ID: 7410685
Filing Date: 2008-08-12
Classification: G02B,Y10S,Y10T

Abstract:
1. An infrared-reflective material comprising a transparent sheet material and at least one interference pigment which has higher transmission in the visible region of global radiation than in the NIR region, wherein all or part of area bounded by the sheet material contains the interference pigment and those parts which contain the interference pigment consist of individual areas containing the interference pigment and adjacent areas not containing the interference pigment, such that the individual areas containing the interference pigment consist of dots, lines, graphic patterns, alphanumeric symbols or irregular shapes of pigment-containing areas uniformly distributed amongst the adjacent areas not containing the interference pigment, provided that either: the interference pigment is present in a coating on the transparent sheet material and the concentration of the interference pigment in the coating is 15-50% by weight, based on the total weight of the coating; or the interference pigment is incorporated into the transparent sheet material in the individual areas containing the interference pigment and the interference pigment is present in the transparent sheet material in a concentration of 5-30% by weight, based on the total weight of the material.