BYK-346 and BYK-333 are silicone surfactants and will improve the substrate wetting of water-based inks and overprint varnishes on various substrates. BYK-3450 and BYK-3451 are silicone surfactants providing a significant reduction in surface tension. Silicone-free recommendations are BYK-381 and BYK-DYNWET 800.
RHEOBYK-7410 ET is our first recommendation for solvent based inks. Depending on the polarity it might be necessary to test a different additive. The dosage is approximately 0.1.-0.2% in most systems. For water-based systems RHEOBYK-7420 ES is our first recommendation. The dosage is at a similar level 0.1-0.2%.