Compositions useful to provide improved rheology and mist control to ink formulations and ink formulations containing such compositions

Abstract

The invention is ink formulations that show improved rheological and antimisting properties. The invention is particularly useful in lithographic inks including heatset, sheetfed and UV curable lithographic inks. The invention also includes novel additive that enable the preparation of inks with required viscosities that are needed to perform on high-speed printing presses with improved performance. The additive is based on reaction products of polyamines and carboxylic acids with two or more carboxylic moieties mixed or combined with tridecyl alcohol. In addition, the inventive additive is in the form of liquid and it is pourable and pumpable for ink manufacturing processes.

Description

FIELD OF THE INVENTION [0001] This invention relates to compositions suitable for use as additives for ink, and to ink formulations comprising said compositions. The invention particularly relates to additives that provide improved rheological properties to lithographic printing inks, sheetfed, heatset and UV curable offset ink formulations. The rheological additive is pourable and pumpable, thereby making it easy to use it in mechanical or automated ink manufacturing processes. BACKGROUND OF THE INVENTION [0002] It is well known that the printing inks utilized today are modified with various types of rheological additives to provide required Theological properties to ensure quality printing on high speed printing presses. Generally, polymer (or resin), solvent and pigment types determine the intrinsic rheology of the ink formulation. Ideally, the formulators hope to achieve all the rheological properties from the resin system they choose. However, to fine tune the rheology and impr...

AI Technical Summary

Benefits of technology

[0012] The invention herein is directed to a liquid rheological additive for heatset, sheetfed and UV curable offset inks. The liquid rheological additive according to the present invention is pourable and pumpable at room or ambient temperature and can be incorporated into inks without the need of high shear mixing equipment and mills.

Problems solved by technology

The dry powders are often very difficult to disperse in inks because of the need for high shear mixing equipment, increased temperatures and longer mixing conditions.

In addition, the powdered materials require additional man-power to handle the bags to charge them into the ink mixing kettle which creates unhealthy dust conditions.