LAMINATION PRINTING INK COMPRISING AN AQUEOUS DISPERSION COMPRISING POLYURETHANE

摘要

The present invention relates to a lamination printing ink comprising an aqueous polyurethane dispersion binder, pigments, an aqueous carrier and optional additives, wherein the polyurethane is made of polyisocyanates, specific polyesterdiols, polytetrahydrofuran diol, monohydroxy-poly(alkylene oxide), diamino acid compound, polyamine compound and optionally one or more low molecular weight polyols.

主权项

1. A lamination printing ink comprising:
at least one binder, at least one pigment, an aqueous carrier and optional additives, wherein the at least one binder is an aqueous dispersion comprising a polyurethane, wherein the polyurethane is made of components comprising: a) at least one polyisocyanate with at least two isocyanate groups, b) a combination of diols wherein
b1) at least one of the diols is a polyesterdiol having molecular weight of from 500 to 5,000, andb2) at least one of the diols is polytetrahydrofuran having a number average molecular weight of from 500 to 5,000 g/mol, c) at least one monohydroxy-poly(a kylene oxide) compound having a number average molecular weight of from 500 to 5,000 g/mol d) at least one diamino acid compound, e) at least one polyamine compound having at least two amino groups and no acid group, and f) optionally one or more polyol compounds having a number average molecular weight of less than 500 g/mol.