• Additive for coatings formulations:

Addition levels from 1 to 3% of BLUESIL BP 9900 compared to the total formulation are typically used.

BLUESIL BP 9900 can also be thinned with water, between 1 to 5% of solids, for a use as water repellent primer. In such formulations, we recommend to add acrylic emulsions.

Our technical department has made a number of tests which can serve as a basis for formulations.

For each new formulation, compatibility between constituents should be checked.

  • Water repellent for construction and insulating materials:

Well adapted for in-plant treatment of mineral and vegetal fibres, BLUESIL BP 9900 is recommended to be diluted to low concentrations: 0.05 to 2%.

BLUESIL BP 9900 can also be used as a water repellent for construction materials. There, the solid content of dilutions will be between 1 to 5 %.

​When stored in its original unopened packaging at a temperature between +2°C and +30°C, BLUESIL BP 9900 may be stored for up to 12 months from its date of manufacture.

Comply with the storage instructions and expiry date marked on the packaging.

Beyond this date, Bluestar Silicones no longer guarantees that the product meets the sales specifications.

Avoid discharge into drains, water courses or onto the ground. Store in a cool, dry place with adequate ventilation. Keep away from incompatible materials, open flames, and high temperatures. Avoid contact with oxidizing agents. Suitable containers: Steel drums coated with epoxy-resin.Please consult the Safety Data Sheet of this product.RoHS;VOC


BLUESIL BP 9900 is a non ionic, APEO free, polyorganosiloxane aqueous emulsion, to be used as a water repellent additive for building materials.

Additive;Breathability;Coating;Hydrophobing;Primer;Protection;UV resistant;Water Repellency




BLUESIL BP 9900 provides long lasting protection thanks to good water resistance, water vapour permeability and beading effect.

In coatings, BLUESIL BP 9900 enhances the water repellency of the films, improves the processability and the antiblocking characteristics.

BLUESIL BP 9900 is an Eco friendly additive, easy to handle and process.

BLUESIL BP 9900 is an additive specially designed to enhance water repellency of interior and exterior paints, mineral paints, plasters …

BLUESIL BP 9900 can also be used as a water repellent for construction materials (bricks, tiles …) and insulating materials.

Asia Pacific;Europe Middle East Africa;Central and South America;North America

For information about Storage and Shelf Life for this product, please download the Technical Data Sheet.




Dry content55MonocompASTM D 5095%
pH7.5MonocompISO 976























BLUESIL® BP 9920, new additive for sustainable coatings,-new-additive-for-sustainable-coatings.aspxBLUESIL® BP 9920, new additive for sustainable coatings





















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