Patent ID: 8563624

Claim:
A free radical curable liquid for use in printing, the free radical curable liquid comprising: no initiator or one or more initiators selected from the group consisting of polymeric initiators and polymerizable initiators; a polymerizable composition consisting essentially of: 25-100 wt % of one or more polymerizable compounds A including at least one acrylate group G1 and at least one ethylenically unsaturated polymerizable functional group G2 different from the group G1; one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates in an amount up to 55 wt %; and 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, wherein if the weight percentage of compounds B>24 wt %, then the weight percentage of compounds C>1 wt %; wherein all weight percentages of A, B, and C are based upon a total weight of the polymerizable composition; at least one polymerizable compound B or C is present in the polymerizable composition if the free radical curable liquid contains no initiator; and the polymerizable compound A has a copolymerization ratio of 0.002< r 2 / r 1 <0.200 with r 1 and r 2 representing copolymerization parameters of methyl-G1 and methyl-G2, respectively, determined according to a method of Kelen-Tudos if the combination of G1 and G2 is not listed in the following Table: TABLE G1-group G2-group r 1 r 2 acrylate allylether 11.0 0.04 acrylate allylester 11.0 0.04 acrylate allylcarbonate 10.2 0.04 acrylate vinylether 3.6 0.02 acrylate vinylester 3.5 0.02 acrylate vinylcarbonate 3.5 0.02 acrylate fumarate 1.9 0.09 acrylate maleate 1.9 0.09.