Patent ID: 7700263
Filing Date: 2010-04-20
Classification: C09D

Abstract:
1. A non-aqueous, substantially solvent-free and photoinitiator-free, particle beam curable ink having a viscosity less than 30 mPa·s at 60° C., comprising: (i) a colorant; and (ii) a mixture of (meth)acrylate compounds; wherein: (a) the colorant is present in the ink in an amount of 0.1 to 14.9% by weight relative to the total weight of ink; and (b) the mixture of (meth)acrylate compounds comprises c % of one or more mono (meth)acrylate compounds, the mono (meth)acrylate compounds being selected from the group consisting of cyclic trimethylolpropane formal (meth)acrylate, ethoxylated tetra hydrofurfuryl (meth)acrylate, phenoxy ethyl (meth)acrylate, trimethylol propane formal (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, monomethoxy neopentyl glycol propoxylate mono (meth)acrylate, monomethoxy tripropylene glycol mono (meth)acrylate, 2-(2-ethoxyethoxy) ethyl (meth)acrylate, iso-decyl (meth)acrylate, iso-octyl (meth)acrylate, iso-nonyl (meth)acrylate, tridecyl (meth)acrylate, iso-bornyl (meth)acrylate, ethoxyl nonyl phenol (meth)acrylate ethoxylated phenol (meth)acrylate, 2-hydroxyl ethyl (meth)acrylate, 4-hydroxyl butyl (meth)acrylate, 2-hydroxy propyl (meth)acrylate, iso-butyl (meth)acrylate, tert-butyl (meth)acrylate, cetyl (meth)acrylate, cyclohexyl (meth)acrylate, ethyl hexyl (meth)acrylate, 2-dimethyl amino ethyl (meth)acrylate, trifluoro ethyl (meth)acrylate, 3-methoxy butyl (meth)acrylate dicyclopentenyl (meth)acrylate, polyethylene glycol mono (meth)acrylate and poly propylene glycol mono (meth)acrylate compounds, d % of one or more di (meth)acrylate compounds and e % of one or more compounds having three or more (meth)acrylate groups, wherein the values of c %, d % and e % are by weight relative to the total weight of the mono (meth)acrylate compounds, di (meth)acrylate compounds and compounds having three or more (meth)acrylate groups and are such that the value of Formula (1) is from 49 to 55.8: