Both additives are silicone surfactants for aqueous systems and bring about not only a significant reduction in surface tension but also improved wetting on highly non-polar substrates without increasing surface slip.
Non-polar substrates such as PP, PE or PET as well as surfaces soiled by oily substances are difficult to wet with aqueous systems. These surfaces are usually non-polar and have a low surface energy. That is why special silicone surfactants are required in these cases which achieve a very significant reduction in the static surface tension of the system being applied on the one hand, while ensuring very good wetting due to improved spreadability on the other. It is precisely in this respect that BYK-3450 and BYK-3451 with their special structure come into their own, producing the desired effects.
“The trisiloxane-based additives BYK-3450 and BYK-3451, which were rolled out at the start of 2019, make it much easier for the user to apply even on the most difficult substrates,” said Holger Heilmann, business line manager industrial applications at BYK.