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free radical curable liquid and ink, packaging material for food applications, inkjet printing method, and use of polymerizable composition
free radical curable liquid and ink, packaging material for food applications, inkjet printing method, and use of polymerizable composition
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机译:自由基可固化液体和油墨,食品包装材料,喷墨印刷方法和可聚合组合物的用途
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摘要
A free radical curable liquid for inkjet printing of food packaging materials comprising no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators and polymerizable initiators; wherein the polymerizable composition of said liquid consists essentially of: a) 25 - 100 wt% of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 different from the group G1; b) 0 - 55 wt% of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0 - 55 wt% of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates, with the proviso that if the weight percentage of compounds B 24 wt%, then the weight percentage of compounds C 1 wt%; and wherein all weight percentages of A, B and C are based upon the total weight of the polymerizable composition; with the proviso that at least one polymerizable compound B or C is present in the polymerizable composition if the free radical curable liquid contains no initiator; wherein the polymerizable compound A has a copolymerization ratio of with r 1 and r 2 representing the copolymerization parameters of methyl-G1 respectively methyl-G2 determined according to the method of Kelen-Tudos.
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