ACRYLATE INK COMPOSITIONS FOR INK-BASED DIGITAL LITHOGRAPHIC PRINTING

摘要

Compatible acrylate ink sets include acrylate ink composition having 30% or less by weight pigment, 10% or less dispersant, between 40% and 80% acrylate, 12% or less photoinitiator, a viscosity between 5×105 and 3×107 cps at 35° C., and a 60 second tack between 25 and 50 g-m at 35° C.

主权项

1. A set of compatible acrylate ink compositions, comprising:
a first acrylate ink composition, comprising a first pigment; and a second acrylate ink composition, comprising a second pigment; wherein each of the acrylate ink compositions comprises: 30% or less by weight pigment, based on a total weight of the acrylate ink composition, 10% or less by weight dispersant, based on the total weight of the acrylate ink composition, between 40% and 80% by weight of an acrylate, based on the total weight of the acrylate ink composition, and 12% or less by weight photoinitiator, based on the total weight of the acrylate ink composition, wherein a viscosity of each acrylate ink composition is between 5×105 and 3×107 cps at 35° C., wherein a 60 second tack of each acrylate ink composition is between 25 and 50 g-m at 35° C., wherein the acrylate comprises a mixture of a tetrafunctional polyester acrylate oligomer and at least one of a polyester acrylate oligomer, a propoxylated trimethylolpropane triacrylate monomer, an ethoxylated trimethylolpropane triacrylate monomer, or a monomer having functionality greater than or equal to 4.