NIR RADIATION MANAGEMENT PART Ⅱ - NIR TRANSPARENT ORGANIC BLACKS FOR PLASTICS

摘要

Last year (ANTEC 2004) we presented a new class of highly efficient organic Near Infrared (NIR) absorbers with a unique performance profile especially suited for laser transmission welding and transparent heat management applications. In this paper we want to introduce novel perylene based high performance black pigments with extraordinary high NIR transparencies. Their excellent thermo- and photostabilities, in combination with a neutral hue, high transparency and color strength make them the ideal candidates for black laser weldable formulations and opaque heat management applications. We present models for the explanation of the unique thermostability and weatherability of this class of compounds, as well as recent advances in the synthesis of those materials, and examples for state-of- the-art plastics applications