SILRES® BS 1306 CN is an additive used in the production of water-based architectural paints and primers to improve the hydrophobicity, water resistance and air permeability of architectural paints. It also improves the handling performance (extended opening time) and anti-adhesion of waterborne coatings. SILRES® BS 1306CN can also be used as a waterproofing additive in two-component cement polymer waterproofing mortars to improve their hydrophobicity.