Evonik has launched two new defoamer concentrates for printing inks and varnishes, which provide a bio-renewable content of 55% and 95%.
The Coating Additives business of Evonik has launched TEGO® Foamex 8820 and 8850, two new, oil-based defoamer concentrates that meet sustainability and safety requirements by providing a bio-renewable content of more than 55%. The products, developed for printing inks and varnishes, are highly suitable for food contact applications, as well.
TEGO Foamex 8820 and 8850 exhibit the same defoaming power as siloxane-based products and may be used in compliance with many regulations, such as Swiss Ordinance (Part A), FDA, and others. They don’t contain any solvents, biocides, or mineral oil.
TEGO Foamex 8820 is very powerful and shear stable, ideal for use at the grinding stage. It contains more than 55% renewable content. TEGO Foamex 8850 is easier to incorporate and more compatible. This “softer” defoamer with more than 95% renewable content is the first choice for the let-down stage.
“Our additives portfolio provides a growing number of products containing bio-based raw materials”, explains Courtney Thurau, head of market segment printing inks.” We’re continuously working on expanding our offerings to fulfil this important market need.”