Eckart Gmbh

Dieter Prölβ

Stefan Engel

Andreas Kroell

Friedrich Dietz

Jörg Männig

Frank Schaefer

Monika Herold

The invention relates to a pigment preparation with metal effect pigments, wherein the pigment preparation contains metal effect pigments the average size dof which lies in a range of from 1.7 to 2.8 &#x3bc;m and the average thickness hof which lies in a range of from 15 to 50 nm, as well as at least one polycarboxylic acid. In addition, the invention relates to a method for producing this pigment preparation as well as the use of same.

Pigment preparation with metal effect pigments, method for the production of same and use of same

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 D&#x3c;10 &#x3bc;m, 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&#xb0; 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.

UV ink jet printing ink composition

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Schwabach, Germany

Dieter Prölβ