Abstract: The invention relates to a coating composition having an amine value of 6-90 mg KOH comprising: i) from 40-97 wt. % of reactive compound (M) containing at least one free radically polymerizable double bond, ii) from 2.5-20 wt. % of radical photoinitiator (R), iii) amine compound (D) containing at least one amino group and iv) non-photobleaching colored dye (C) which is able to react with freeradicals under bleaching of its color, wherein the wt. % is relative to the total weight of the composition, (M) is different from (R); (D) is different from (R); and (C) is different from (R) and (M); and the radical photoinitiator (R) contains species that are able to interact with amino groups in such a way that the generation of free radicals is activated when exposed to electromagnetic radiation.

Abstract: The present invention relates to a waterborne paint composition, comprising a non-film-forming poly(styrene acrylate) having a glass transition temperature (TG) of at least 80° C., a poly(styrene acrylate) resin having a weight average molecular weight (MW) of up to 20 000 g/mol, and water. Such a paint composition is suitable as an overprint varnish or primer for substrates such as paper, paperboard and sheets. Due to its surface structure having micro-cracks the applied paint film can advantageously be printed by inkjet printing.

Abstract: The present invention relates to a waterborne paint composition, comprising a non-film-forming poly(styrene acrylate) having a glass transition temperature (TG) of at least 80° C., a poly(styrene acrylate) resin having a weight average molecular weight (MW) of up to 20 000 g/mol, and water. Such a paint composition is suitable as an overprint varnish or primer for substrates such as paper, paperboard and sheets. Due to its surface structure having micro-cracks the applied paint film can advantageously be printed by inkjet printing.