Bentone 128

Rheological additive for printing inks

BENTONE 128 rheological additive is a special organically modified bentonite clay designed for non-polar printing inks based on naphtenic and paraffinic solvents and oils. It will also gel inks containing solvent of intermediate polarity.

Key Properties:

• is specifically designed for printing inks, and unlike other gelling agents, it requires less shearing action than conventional organoclays to impart ultimate viscosity
• reduces misting
• increases plastic viscosity and "Yield Value" of inks without excessive increase in tack and thixotropy
• prevents excessive penetration of the ink into porous substrates
• imparts particle suspension, preventing agglomeration
• allows the ink manufacturer to produce low tack inks at relatively high viscosity
• improves sharpness of printing and reproduction of printing inks
• prevents flooding and floating of tint colors

Applications:

• Heatset web offset inks
• Sheetfed offset inks
• Letterpress inks
• News inks
• Rubber base inks
• Ultra-violet curable inks