Method of Printing a Time-Temperature Indicator Based on Azo Coupling Reactions onto a Susbtrate
申请人:Reichert Hans
公开号:US20070218206A1
公开(公告)日:2007-09-20
The present invention relates to a method of printing a substrate, comprising (a) printing onto the substrate at least one time temperature indicator with chromic properties based on an azo coupling reaction between a capped diazonium component and a coupling component.