BYK-349

https://www.byk.com/en/additives/additives-by-name/byk-349.php

Silicone surfactant for aqueous coatings, adhesives and maintenance products with a considerable reduction in the surface tension and therefore good substrate wetting. Does not increase the surface slip. Suitable for systems that do not contain co-solvents. All-purpose.

Recommended Levels 

0.05-0.5% additive (as supplied) based upon total formulation. The above recommended levels can be used for orientation. Optimal dosage levels are determined through a series of laboratory tests.