申请人:Forsythe Neil Colin William
公开号:US20120288690A1
公开(公告)日:2012-11-15
A multi color, photoactive, color changing plastic, coating or ink, composition comprising both a photochromic material and a photosensitive chromogenic system is provided which will undergo a sequence of color changes upon exposure to ultraviolet radiation. Also provided is an ultraviolet indicator or dosimeter comprising the color changing composition.