• Additive for coatings formulations :

    Addition levels from 0.1 to 2% of BLUESIL BP 9705 compared to the total formulation are typically used (addition at the end of the formulation).

    BLUESIL BP 9705 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:

    BLUESIL BP 9705 can be used as a water repellent for construction materials. There, the solid content of dilutions will be between 0.5 to 5 %. 

BLUESIL BP 9705 can also be used for in plant treatment of mineral or vegetal fibres. There it isis recommended to be diluted in water  to low concentrations: 0.05 to 2%.


​When stored in its original unopened packaging at a temperature between +2°C and +30°C, BLUESIL BP 9705 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.

Store in a cool, dry place with adequate ventilation. Keep away from incompatible materials, open flames, and high temperatures. Store in tightly closed original container. equipped with a degassing device. Suitable containers: polyethylene. Steel drums coated with epoxy-resin.Please consult the Safety Data Sheet of this product.RoHS


BLUESIL BP 9705 is a non ionic, APEO free, polyorganosiloxane aqueous emulsion, to be used as a water repellent additive in various formulations for building materials.

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




BLUESIL BP 9705, added at very low amount, provides long lasting protection thanks to good water resistance and good water vapour permeability.

In coatings, BLUESIL BP 9705 enhances the water repellency of the films and improves the processability and the antiblocking characteristics.

Thanks to its very low dosage efficiency, the use of BLUESIL BP 9705 typically results in very low dirt pick up tendency, and allows to formulate products with very low VOC.

BLUESIL BP 9705 is an Eco friendly additive, easy to handle and process.

BLUESIL BP 9705 is an additive specially designed to enhance water resistance of interior and exterior paints, mineral paints, plasters …

BLUESIL BP 9705 can also be used as a water repellent for construction (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 content50MonocompASTM D 5095%
pH8MonocompISO 976























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