UV ink jet printing ink composition

摘要

A 1K UV-ink jet printing ink composition comprising effect pigments, wherein the composition comprises:;a) at least one difunctional (meth)acrylate monomer,;b) at least one photoinitiator,;c) effect pigments having a volume averaged particle size distribution with a D98<10 μm,;d) optionally trifunctional and/or polyfunctional (meth)acrylate monomers, and wherein the viscosity of the ink jet printing ink composition is at maximum 30 mPas, measured at 25° C. for 10 minutes with a Brookfield R/S rheometer using a double gap cylinder according to DIN 53453 (German Industrial Standards) at 150 rpm and wherein the total concentration of the at least one difunctional (meth)acrylate monomer of a) and the trifunctional and/or polyfunctional (meth)acrylate monomers of d) is in a range of 75 to 100 wt.-%, based on the total amount of (meth)acrylate monomers.

主权项

1. A 1K UV-ink jet printing ink composition comprising effect pigments, wherein said composition comprises:
a) at least one monofunctional (meth)acrylate monomer; b) at least one difunctional (meth)acrylate monomer, c) at least one photoinitiator, d) effect pigments having a volume averaged particle size distribution with a D98<10 μm, said effect pigments selected from the group consisting of platelet-like metal effect pigments and interference pigments, e) at least one trifunctional (meth)acrylate monomer present in the UV ink jet printing ink composition in a range of between 5 to 40 wt.-%, based on the total amount of (meth)acrylate monomers, and f) optionally polyfunctional (meth)acrylate monomers, wherein the viscosity of the ink jet printing ink composition is at maximum 30 mPas, measured at 25° C. for 10 minutes with a Brookfield R/S rheometer using a double gap cylinder according to DIN 53453 (German Industrial Standards) at 150 rpm, wherein said at least one monofunctional (meth)acrylate monomer is present in the UV-ink jet printing ink composition in a range of between 0 to 14 wt.-% based on the total amount of methacrylate monomer, wherein said at least one difunctional (meth)acrylate monomer is present in the UV-ink jet printing ink composition in a concentration in a range of between 60 to 95 wt.-%, based on the total amount of (meth)acrylate monomers, and wherein the total concentration of the at least one difunctional (meth)acrylate monomer of b) and the at least one trifunctional monomer of e) and optionally the polyfunctional (meth)acrylate monomers of f) is in a range of 75 to 100 wt.-%, based on the total amount of (meth)acrylate monomers.