Tego VariPlus LK lowers VOC content in pigment concentrates

09 February 2016

Emission limits for volatile organic compounds (VOC) are being lowered worldwide. Consequently, coatings formulators are increasingly limited in their choice of raw materials and hence their formulations. Tego VariPlus

LK, the new grinding resin from Evonik Resource Efficiency, drastically lowers the VOC content in pigment concentrates for solventborne coatings and, therefore, in the total formulation.

The resin reduces the viscosity of the concentrate, thus, permitting optimised pigment loading. Used in combination with Tego Dispers 676 dispersing additive, the VOC content in the concentrate can be lowered by up to 75%. For the overall formulation this means a VOC reduction of up to 100g/lit when adding 20% concentrate and because the grinding resin is liquid, dissolving is unnecessary.

"VariPlus LK is one of the first liquid grinding resins on the market,” emphasised Daniel Brünink, Director Global Marketing Decorative Coatings. "Up to now grinding resins have been supplied as granules, which have to be dissolved in a solvent. With VariPlus LK, formulators will be able to cut out this step.”

The new grinding resin is compatible with all common binders. Coatings properties are scarcely affected by pigment concentrates based on VariPlus LK.


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