| abstract |
One or more selected from the group consisting of non-polymeric or otherwise non-polymeric bi- or polyfunctional initiators, oligomeric initiators, polymeric initiators and polymerizable initiators A free radical curable liquid for ink jet printing of food packaging materials comprising a large amount of initiator; wherein the polymerizable composition of the liquid consists essentially of: a) 25-100% by weight of at least One or more polymerizable compounds A having one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 different from the group G1; b) 0-55% by weight monofunctional One or more polymerizable compounds B selected from the group consisting of basic acrylates and difunctional acrylates; and c) 0-55 wt. Consisting of one or more polymerizable compounds C selected from the group consisting of rate, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates, provided that the weight percentage of compound B is> 24% by weight The weight percentage of compound C> 1% by weight; and where all weight percentages of A, B and C are based on the total weight of the polymerizable composition; provided that the free radical curable liquid contains an initiator Otherwise, at least one polymerizable compound B or C is present in the polymerizable composition; where the polymerizable compound A has a copolymerization ratio of 0.002 <r 2 / r 1 <0.200. and, r 1 and r 2 represent, respectively, copolymerization parameters of methyl -G1 and methyl -G2 determined according to the method of Kelen-Tudos, Lee radical curable liquid. [Selection figure] None |